[INFO] fetching crate btrfs-backup 0.2.3...
[INFO] testing btrfs-backup-0.2.3 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate btrfs-backup 0.2.3 into /workspace/builds/worker-0-tc1/source
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate btrfs-backup 0.2.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate btrfs-backup 0.2.3
[INFO] tweaked toml for crates.io crate btrfs-backup 0.2.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate btrfs-backup 0.2.3 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate btrfs-backup 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uname v0.1.1
[INFO] [stderr]   Downloaded num_threads v0.1.7
[INFO] [stderr]   Downloaded num-conv v0.1.0
[INFO] [stderr]   Downloaded deranged v0.4.0
[INFO] [stderr]   Downloaded serial_test_derive v3.2.0
[INFO] [stderr]   Downloaded powerfmt v0.2.0
[INFO] [stderr]   Downloaded plain v0.2.3
[INFO] [stderr]   Downloaded scroll_derive v0.13.0
[INFO] [stderr]   Downloaded scroll v0.13.0
[INFO] [stderr]   Downloaded serial_test v3.2.0
[INFO] [stderr]   Downloaded clap_derive v4.5.45
[INFO] [stderr]   Downloaded clap v4.5.45
[INFO] [stderr]   Downloaded bitflags v2.9.2
[INFO] [stderr]   Downloaded time v0.3.41
[INFO] [stderr]   Downloaded anyhow v1.0.99
[INFO] [stderr]   Downloaded sdd v3.0.10
[INFO] [stderr]   Downloaded tempfile v3.21.0
[INFO] [stderr]   Downloaded clap_complete v4.5.57
[INFO] [stderr]   Downloaded grev v0.1.3
[INFO] [stderr]   Downloaded memmap v0.7.0
[INFO] [stderr]   Downloaded time-macros v0.2.22
[INFO] [stderr]   Downloaded time-core v0.1.4
[INFO] [stderr]   Downloaded clap_builder v4.5.44
[INFO] [stderr]   Downloaded scc v2.4.0
[INFO] [stderr]   Downloaded goblin v0.10.1
[INFO] [stderr]   Downloaded libc v0.2.175
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cd96d94dbc9f52cac7b1fc74f303df45c0efda9bff24bc63f9f63485993b2e1
[INFO] running `Command { std: "docker" "start" "-a" "8cd96d94dbc9f52cac7b1fc74f303df45c0efda9bff24bc63f9f63485993b2e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cd96d94dbc9f52cac7b1fc74f303df45c0efda9bff24bc63f9f63485993b2e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd96d94dbc9f52cac7b1fc74f303df45c0efda9bff24bc63f9f63485993b2e1", kill_on_drop: false }`
[INFO] [stdout] 8cd96d94dbc9f52cac7b1fc74f303df45c0efda9bff24bc63f9f63485993b2e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69d3d4023ededba71b959ab922595406add0052be55effce284b14445d82d9e2
[INFO] running `Command { std: "docker" "start" "-a" "69d3d4023ededba71b959ab922595406add0052be55effce284b14445d82d9e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling anstyle-query v1.1.4
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling anstyle v1.0.11
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling anstream v0.6.20
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling deranged v0.4.0
[INFO] [stderr]    Compiling num_threads v0.1.7
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling grev v0.1.3
[INFO] [stderr]    Compiling clap_builder v4.5.44
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]    Compiling time-core v0.1.4
[INFO] [stderr]    Compiling uname v0.1.1
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling btrfs-backup v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling time v0.3.41
[INFO] [stderr] warning: btrfs-backup@0.2.3: Not in a git repository; unable to embed git revision
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling clap_derive v4.5.45
[INFO] [stderr]    Compiling clap v4.5.45
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.64s
[INFO] running `Command { std: "docker" "inspect" "69d3d4023ededba71b959ab922595406add0052be55effce284b14445d82d9e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69d3d4023ededba71b959ab922595406add0052be55effce284b14445d82d9e2", kill_on_drop: false }`
[INFO] [stdout] 69d3d4023ededba71b959ab922595406add0052be55effce284b14445d82d9e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a81e425ef5a89d2cb91db6c3d166c3d3031f43195d0d883a50c96a59c43cab04
[INFO] running `Command { std: "docker" "start" "-a" "a81e425ef5a89d2cb91db6c3d166c3d3031f43195d0d883a50c96a59c43cab04", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling scroll_derive v0.13.0
[INFO] [stderr]    Compiling sdd v3.0.10
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling bitflags v2.9.2
[INFO] [stderr]    Compiling scc v2.4.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr] warning: btrfs-backup@0.2.3: Not in a git repository; unable to embed git revision
[INFO] [stderr]    Compiling serial_test_derive v3.2.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling scroll v0.13.0
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling goblin v0.10.1
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling tempfile v3.21.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling serial_test v3.2.0
[INFO] [stderr]    Compiling btrfs-backup v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 24.80s
[INFO] running `Command { std: "docker" "inspect" "a81e425ef5a89d2cb91db6c3d166c3d3031f43195d0d883a50c96a59c43cab04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a81e425ef5a89d2cb91db6c3d166c3d3031f43195d0d883a50c96a59c43cab04", kill_on_drop: false }`
[INFO] [stdout] a81e425ef5a89d2cb91db6c3d166c3d3031f43195d0d883a50c96a59c43cab04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 831b00a44f596f601ecc2e8428800b487acee1330e209ec09c5ffb591526946b
[INFO] running `Command { std: "docker" "start" "-a" "831b00a44f596f601ecc2e8428800b487acee1330e209ec09c5ffb591526946b", kill_on_drop: false }`
[INFO] [stderr] warning: btrfs-backup@0.2.3: Not in a git repository; unable to embed git revision
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/btrfs_backup-8680616fccd7ccab)
[INFO] [stdout] 
[INFO] [stdout] running 45 tests
[INFO] [stdout] test args::tests::command_parsing ... ok
[INFO] [stdout] test args::tests::duration_parsing ... ok
[INFO] [stdout] test btrfs::btrfs::tests::subvol_creation_deletion ... FAILED
[INFO] [stdout] test btrfs::btrfs::tests::filesystem_check ... FAILED
[INFO] [stdout] test btrfs::commands::tests::command_construction ... ok
[INFO] [stdout] test ops::tests::directory_check ... ok
[INFO] [stdout] test ops::tests::directory_creation ... ok
[INFO] [stdout] test ops::tests::path_canonicalization ... ok
[INFO] [stdout] test btrfs::btrfs::tests::snapshot_send_recv ... FAILED
[INFO] [stdout] test repo::tests::backup_subvolume ... FAILED
[INFO] [stdout] test btrfs::btrfs::tests::subvolumes_in_subdir ... FAILED
[INFO] [stdout] test repo::tests::backup_subvolume_up_to_date ... FAILED
[INFO] [stdout] test btrfs::btrfs::tests::subvol_id_resolution ... FAILED
[INFO] [stdout] test repo::tests::backup_subvolume_incremental ... FAILED
[INFO] [stdout] test repo::tests::restore_snapshot_only ... FAILED
[INFO] [stdout] test repo::tests::restore_subvolume ... FAILED
[INFO] [stdout] test repo::tests::no_snapshots_in_empty_repo ... FAILED
[INFO] [stdout] test repo::tests::backup_non_existent_subvolume ... FAILED
[INFO] [stdout] test repo::tests::backup_subvolume_with_subvol_option ... FAILED
[INFO] [stdout] test repo::tests::snapshot_creation_on_change ... FAILED
[INFO] [stdout] test repo::tests::snapshot_creation_up_to_date ... FAILED
[INFO] [stdout] test repo::tests::snapshot_creation ... FAILED
[INFO] [stdout] test btrfs::btrfs::tests::subvolume_readonly ... FAILED
[INFO] [stdout] test repo::tests::restore_subvolume_missing_snapshot ... FAILED
[INFO] [stdout] test repo::tests::tagged_snapshot_creation ... FAILED
[INFO] [stdout] test repo::tests::writable_snapshot_listing ... FAILED
[INFO] [stdout] test snapshot::tests::snapshot_name_ordering ... ok
[INFO] [stdout] test snapshot::tests::snapshot_name_parsing_and_emitting ... ok
[INFO] [stdout] test snapshot::tests::snapshot_subvolume_comparison ... ok
[INFO] [stdout] test snapshot::tests::snapshot_trailing_path_separator_handling ... ok
[INFO] [stdout] test repo::tests::snapshot_outside_repo ... FAILED
[INFO] [stdout] test repo::tests::snapshot_creation_up_to_date_tagged ... FAILED
[INFO] [stdout] test tests::help ... ok
[INFO] [stdout] test tests::version ... ok
[INFO] [stdout] test util::tests::escape_unescape ... ok
[INFO] [stdout] test util::tests::escaped_splitting ... ok
[INFO] [stdout] test util::tests::non_strict_canonicalization ... ok
[INFO] [stdout] test util::tests::path_normalization ... ok
[INFO] [stdout] test btrfs::btrfs::tests::subvolumes ... FAILED
[INFO] [stdout] test test::tests::create_mount_btrfs ... FAILED
[INFO] [stdout] test repo::tests::snapshot_listing ... FAILED
[INFO] [stdout] test repo::tests::restore_subvolume_exists ... FAILED
[INFO] [stdout] test btrfs::btrfs::tests::filesystem_sync ... FAILED
[INFO] [stdout] test btrfs::btrfs::tests::subvol_changes ... FAILED
[INFO] [stdout] test test::tests::create_destroy_loopdev ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::subvol_creation_deletion stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::subvol_creation_deletion' (24) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::subvol_creation_deletion::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:442:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::subvol_creation_deletion
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:440:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::subvol_creation_deletion::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:441:32
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cd9a6 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cd9a6 - btrfs_backup::test::with_btrfs::hc845f4ef57e93e9b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f71ea - btrfs_backup::btrfs::btrfs::tests::subvol_creation_deletion::{{closure}}::hd8eed93407a6b38f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:442:5
[INFO] [stdout]   23:     0x64c3d938589e - core::ops::function::FnOnce::call_once::h12f70c8ad9bb2d57
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f719a - btrfs_backup::btrfs::btrfs::tests::subvol_creation_deletion::hd83a0d321430d681
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:440:3
[INFO] [stdout]   26:     0x64c3d92f71c7 - btrfs_backup::btrfs::btrfs::tests::subvol_creation_deletion::{{closure}}::hbf2c93aa1947b3cf
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:441:32
[INFO] [stdout]   27:     0x64c3d9385936 - core::ops::function::FnOnce::call_once::h191d8097cd2ec00c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::filesystem_check stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::filesystem_check' (20) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::filesystem_check::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:409:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::filesystem_check
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:407:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::filesystem_check::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:408:24
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cd676 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cd676 - btrfs_backup::test::with_btrfs::haae4d1472f6e2fb3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f46aa - btrfs_backup::btrfs::btrfs::tests::filesystem_check::{{closure}}::h748d31d63caab4e4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:409:5
[INFO] [stdout]   23:     0x64c3d938693e - core::ops::function::FnOnce::call_once::h9cb3da58d972d051
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f468a - btrfs_backup::btrfs::btrfs::tests::filesystem_check::hd7c6ee16fad6f9df
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:407:3
[INFO] [stdout]   26:     0x64c3d92f46c7 - btrfs_backup::btrfs::btrfs::tests::filesystem_check::{{closure}}::h88e7ce3ccb8c0e90
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:408:24
[INFO] [stdout]   27:     0x64c3d93859a6 - core::ops::function::FnOnce::call_once::h23d965834f0bb093
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::snapshot_send_recv stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::snapshot_send_recv' (22) panicked at src/btrfs/btrfs.rs:593:45:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::btrfs::btrfs::tests::snapshot_send_recv::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:593:20
[INFO] [stdout]    9: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   10: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   11: btrfs_backup::btrfs::btrfs::tests::snapshot_send_recv
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:591:3
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::snapshot_send_recv::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:592:26
[INFO] [stdout]   13: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   16: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   17: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   18: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   19: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   20: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   21: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   22: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   24: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   25: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   26: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   30: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   31: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   33: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   34: <unknown>
[INFO] [stdout]   35: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92f4ef4 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92f4ef4 - btrfs_backup::btrfs::btrfs::tests::snapshot_send_recv::{{closure}}::h593c900f596458f3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:593:45
[INFO] [stdout]   22:     0x64c3d93858fe - core::ops::function::FnOnce::call_once::h16278a949ba2ac9f
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   24:     0x64c3d92f4e5a - btrfs_backup::btrfs::btrfs::tests::snapshot_send_recv::h957d0674cd83db09
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:591:3
[INFO] [stdout]   25:     0x64c3d92f5a37 - btrfs_backup::btrfs::btrfs::tests::snapshot_send_recv::{{closure}}::hb2dc79d65005f9c9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:592:26
[INFO] [stdout]   26:     0x64c3d9386006 - core::ops::function::FnOnce::call_once::h553a58b809903d76
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   38:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   39:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   44:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   46:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   47:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   48:     0x793777c14a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::backup_subvolume stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::backup_subvolume' (45) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::backup_subvolume::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:652:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::backup_subvolume
[INFO] [stdout]              at ./src/repo.rs:648:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::backup_subvolume::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:649:24
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92d036b - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92d036b - btrfs_backup::test::with_two_btrfs::hc2efd7f44c1e35f5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d93206c9 - btrfs_backup::repo::tests::backup_subvolume::{{closure}}::h5b14127dc517b48a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:652:5
[INFO] [stdout]   23:     0x64c3d9386b2e - core::ops::function::FnOnce::call_once::hcc7f19604d94ad61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932068a - btrfs_backup::repo::tests::backup_subvolume::h6d686d33326587c5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:648:3
[INFO] [stdout]   26:     0x64c3d93206e7 - btrfs_backup::repo::tests::backup_subvolume::{{closure}}::hd0ec119ced0deced
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:649:24
[INFO] [stdout]   27:     0x64c3d9386406 - core::ops::function::FnOnce::call_once::h67c6524c41075799
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::subvolumes_in_subdir stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::subvolumes_in_subdir' (29) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::subvolumes_in_subdir::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:526:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::subvolumes_in_subdir
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:524:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::subvolumes_in_subdir::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:525:28
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92ccca6 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92ccca6 - btrfs_backup::test::with_btrfs::h8c9e405071daf7f1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f694a - btrfs_backup::btrfs::btrfs::tests::subvolumes_in_subdir::{{closure}}::hf5edc4a40dc9ae8b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:526:5
[INFO] [stdout]   23:     0x64c3d93866fe - core::ops::function::FnOnce::call_once::h8c21ea404d6b73a3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f68fa - btrfs_backup::btrfs::btrfs::tests::subvolumes_in_subdir::ha356e9fff318ec80
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:524:3
[INFO] [stdout]   26:     0x64c3d92f6927 - btrfs_backup::btrfs::btrfs::tests::subvolumes_in_subdir::{{closure}}::h62251b2b2556e376
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:525:28
[INFO] [stdout]   27:     0x64c3d9385f36 - core::ops::function::FnOnce::call_once::h484920ee0de00b8d
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::backup_subvolume_up_to_date stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::backup_subvolume_up_to_date' (49) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::backup_subvolume_up_to_date::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:729:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::backup_subvolume_up_to_date
[INFO] [stdout]              at ./src/repo.rs:725:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::backup_subvolume_up_to_date::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:726:35
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cf60b - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cf60b - btrfs_backup::test::with_two_btrfs::h6670dba16a7e76ee
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d9327609 - btrfs_backup::repo::tests::backup_subvolume_up_to_date::{{closure}}::hb4640fd508660092
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:729:5
[INFO] [stdout]   23:     0x64c3d9385a1e - core::ops::function::FnOnce::call_once::h27f8747ff45eec19
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932759a - btrfs_backup::repo::tests::backup_subvolume_up_to_date::hea0130cc8babeb8b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:725:3
[INFO] [stdout]   26:     0x64c3d93275c7 - btrfs_backup::repo::tests::backup_subvolume_up_to_date::{{closure}}::h5c4dbbdb411eab67
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:726:35
[INFO] [stdout]   27:     0x64c3d9385b36 - core::ops::function::FnOnce::call_once::h2ac44b7a9cc369fd
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::subvol_id_resolution stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::subvol_id_resolution' (25) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::subvol_id_resolution::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:455:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::subvol_id_resolution
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:453:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::subvol_id_resolution::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:454:28
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cb5f6 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cb5f6 - btrfs_backup::test::with_btrfs::h2410676996b3d3fd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f62aa - btrfs_backup::btrfs::btrfs::tests::subvol_id_resolution::{{closure}}::h195994e735df1372
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:455:5
[INFO] [stdout]   23:     0x64c3d938635e - core::ops::function::FnOnce::call_once::h63af9a34c08599b4
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f628a - btrfs_backup::btrfs::btrfs::tests::subvol_id_resolution::hfa3fb4504788333c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:453:3
[INFO] [stdout]   26:     0x64c3d92f62c7 - btrfs_backup::btrfs::btrfs::tests::subvol_id_resolution::{{closure}}::h9e244efa83294d1b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:454:28
[INFO] [stdout]   27:     0x64c3d9386736 - core::ops::function::FnOnce::call_once::h8c72912e80e86a40
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::backup_subvolume_incremental stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::backup_subvolume_incremental' (47) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::backup_subvolume_incremental::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:757:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::backup_subvolume_incremental
[INFO] [stdout]              at ./src/repo.rs:753:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::backup_subvolume_incremental::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:754:36
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92d10cb - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92d10cb - btrfs_backup::test::with_two_btrfs::hefbe09a0f077f9a5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d93293d9 - btrfs_backup::repo::tests::backup_subvolume_incremental::{{closure}}::hdb57c129ccba5431
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:757:5
[INFO] [stdout]   23:     0x64c3d9386e8e - core::ops::function::FnOnce::call_once::hefe261222cc04b2f
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932936a - btrfs_backup::repo::tests::backup_subvolume_incremental::hb93e189338064eec
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:753:3
[INFO] [stdout]   26:     0x64c3d9329397 - btrfs_backup::repo::tests::backup_subvolume_incremental::{{closure}}::h8dad82273d74595c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:754:36
[INFO] [stdout]   27:     0x64c3d93869b6 - core::ops::function::FnOnce::call_once::h9d0c30ee7f964da6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::restore_snapshot_only stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::restore_snapshot_only' (55) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::restore_snapshot_only::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:822:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::restore_snapshot_only
[INFO] [stdout]              at ./src/repo.rs:818:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::restore_snapshot_only::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:819:29
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cfcbb - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cfcbb - btrfs_backup::test::with_two_btrfs::h6f98d00a58340912
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d9323c39 - btrfs_backup::repo::tests::restore_snapshot_only::{{closure}}::h13c04061b56c3da2
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:822:5
[INFO] [stdout]   23:     0x64c3d9386d8e - core::ops::function::FnOnce::call_once::he2c09859694f1f78
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d9323bfa - btrfs_backup::repo::tests::restore_snapshot_only::hee23584c84afadfe
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:818:3
[INFO] [stdout]   26:     0x64c3d9323c57 - btrfs_backup::repo::tests::restore_snapshot_only::{{closure}}::h265c1ec4d83d9ca0
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:819:29
[INFO] [stdout]   27:     0x64c3d9385e76 - core::ops::function::FnOnce::call_once::h3ba8c99a845090d2
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::restore_subvolume stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::restore_subvolume' (57) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::restore_subvolume::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:784:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::restore_subvolume
[INFO] [stdout]              at ./src/repo.rs:780:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::restore_subvolume::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:781:25
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92d0a1b - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92d0a1b - btrfs_backup::test::with_two_btrfs::hc4ecdbc558bbb974
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d9321d09 - btrfs_backup::repo::tests::restore_subvolume::{{closure}}::h2691b60499ef14ba
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:784:5
[INFO] [stdout]   23:     0x64c3d9385bde - core::ops::function::FnOnce::call_once::h2d6497ab01e40c39
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d9321cca - btrfs_backup::repo::tests::restore_subvolume::h117f0a9bcad40f0b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:780:3
[INFO] [stdout]   26:     0x64c3d9321d27 - btrfs_backup::repo::tests::restore_subvolume::{{closure}}::hb1bb12d1cb2a2461
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:781:25
[INFO] [stdout]   27:     0x64c3d9386076 - core::ops::function::FnOnce::call_once::h57e8a47b6fa2557c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::no_snapshots_in_empty_repo stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::no_snapshots_in_empty_repo' (53) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::no_snapshots_in_empty_repo::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:561:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::no_snapshots_in_empty_repo
[INFO] [stdout]              at ./src/repo.rs:559:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::no_snapshots_in_empty_repo::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:560:34
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cb926 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cb926 - btrfs_backup::test::with_btrfs::h2a0fafb88542b8cd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d93271da - btrfs_backup::repo::tests::no_snapshots_in_empty_repo::{{closure}}::h12dc6c83e59fd5d0
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:561:5
[INFO] [stdout]   23:     0x64c3d9385efe - core::ops::function::FnOnce::call_once::h41d8324c9f80bdce
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d93271ba - btrfs_backup::repo::tests::no_snapshots_in_empty_repo::h3fc13d7888a1c56f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:559:3
[INFO] [stdout]   26:     0x64c3d93271f7 - btrfs_backup::repo::tests::no_snapshots_in_empty_repo::{{closure}}::h25fd3619a0c88991
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:560:34
[INFO] [stdout]   27:     0x64c3d9385df6 - core::ops::function::FnOnce::call_once::h382e4f7532893e5a
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::backup_non_existent_subvolume stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::backup_non_existent_subvolume' (43) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::backup_non_existent_subvolume::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:712:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::backup_non_existent_subvolume
[INFO] [stdout]              at ./src/repo.rs:708:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::backup_non_existent_subvolume::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:709:37
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92d1e2b - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92d1e2b - btrfs_backup::test::with_two_btrfs::hff5f38c7559bc75c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d932adc9 - btrfs_backup::repo::tests::backup_non_existent_subvolume::{{closure}}::h6c214ba2075a2fe5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:712:5
[INFO] [stdout]   23:     0x64c3d9386dfe - core::ops::function::FnOnce::call_once::he660779afa672f4b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932ad8a - btrfs_backup::repo::tests::backup_non_existent_subvolume::h4bec9b8305385550
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:708:3
[INFO] [stdout]   26:     0x64c3d932ade7 - btrfs_backup::repo::tests::backup_non_existent_subvolume::{{closure}}::hef874e971551f5fe
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:709:37
[INFO] [stdout]   27:     0x64c3d93869f6 - core::ops::function::FnOnce::call_once::ha4f31375653a9510
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::backup_subvolume_with_subvol_option stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::backup_subvolume_with_subvol_option' (51) panicked at src/repo.rs:672:48:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::repo::tests::backup_subvolume_with_subvol_option::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:672:23
[INFO] [stdout]    9: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   10: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   11: btrfs_backup::repo::tests::backup_subvolume_with_subvol_option
[INFO] [stdout]              at ./src/repo.rs:670:3
[INFO] [stdout]   12: btrfs_backup::repo::tests::backup_subvolume_with_subvol_option::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:671:43
[INFO] [stdout]   13: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   16: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   17: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   18: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   19: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   20: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   21: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   22: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   24: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   25: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   26: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   30: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   31: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   33: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   34: <unknown>
[INFO] [stdout]   35: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d932be5d - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d932be5d - btrfs_backup::repo::tests::backup_subvolume_with_subvol_option::{{closure}}::hd32455d21be81845
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:672:48
[INFO] [stdout]   22:     0x64c3d9386d5e - core::ops::function::FnOnce::call_once::hdbd5bbbab5eb8e69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   24:     0x64c3d932bd7a - btrfs_backup::repo::tests::backup_subvolume_with_subvol_option::h024ecd93d4396bec
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:670:3
[INFO] [stdout]   25:     0x64c3d932bda7 - btrfs_backup::repo::tests::backup_subvolume_with_subvol_option::{{closure}}::h32de501236e6f356
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:671:43
[INFO] [stdout]   26:     0x64c3d9386cb6 - core::ops::function::FnOnce::call_once::hd5f28e8c420cf1e2
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   38:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   39:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   44:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   46:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   47:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   48:     0x793777c14a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::snapshot_creation_on_change stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::snapshot_creation_on_change' (65) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::snapshot_creation_on_change::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:534:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::snapshot_creation_on_change
[INFO] [stdout]              at ./src/repo.rs:530:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::snapshot_creation_on_change::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:531:35
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cb2b0 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cb2b0 - btrfs_backup::test::with_btrfs::h20b98f6f2013991b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d93280e9 - btrfs_backup::repo::tests::snapshot_creation_on_change::{{closure}}::h1d2b9256f64fce13
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:534:5
[INFO] [stdout]   23:     0x64c3d9386cee - core::ops::function::FnOnce::call_once::hd848f47db76bc43a
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d93280aa - btrfs_backup::repo::tests::snapshot_creation_on_change::ha6b2a6024e6d2d4a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:530:3
[INFO] [stdout]   26:     0x64c3d9328107 - btrfs_backup::repo::tests::snapshot_creation_on_change::{{closure}}::hae9e4a99e982751c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:531:35
[INFO] [stdout]   27:     0x64c3d9386326 - core::ops::function::FnOnce::call_once::h61938aaa42f11c73
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::snapshot_creation_up_to_date stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::snapshot_creation_up_to_date' (67) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::snapshot_creation_up_to_date::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:486:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::snapshot_creation_up_to_date
[INFO] [stdout]              at ./src/repo.rs:482:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::snapshot_creation_up_to_date::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:483:36
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cabf0 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cabf0 - btrfs_backup::test::with_btrfs::h00cee34bdc0e412e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d932a319 - btrfs_backup::repo::tests::snapshot_creation_up_to_date::{{closure}}::h00ffcfa2f3589564
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:486:5
[INFO] [stdout]   23:     0x64c3d9386f5e - core::ops::function::FnOnce::call_once::hfc539cc54df91f76
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932a2da - btrfs_backup::repo::tests::snapshot_creation_up_to_date::hcd9479ac57c31ef5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:482:3
[INFO] [stdout]   26:     0x64c3d932a337 - btrfs_backup::repo::tests::snapshot_creation_up_to_date::{{closure}}::h6d7817978c9a3c96
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:483:36
[INFO] [stdout]   27:     0x64c3d9386886 - core::ops::function::FnOnce::call_once::h9af4c60e211c2eb4
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::snapshot_creation stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::snapshot_creation' (63) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::snapshot_creation::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:443:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::snapshot_creation
[INFO] [stdout]              at ./src/repo.rs:439:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::snapshot_creation::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:440:25
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cbfa0 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cbfa0 - btrfs_backup::test::with_btrfs::h485d74c8e019b1cd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d9323209 - btrfs_backup::repo::tests::snapshot_creation::{{closure}}::haa2883d152f58b99
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:443:5
[INFO] [stdout]   23:     0x64c3d938596e - core::ops::function::FnOnce::call_once::h1c78ab9d028a24fb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932319a - btrfs_backup::repo::tests::snapshot_creation::h595ac8eb1aff74bf
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:439:3
[INFO] [stdout]   26:     0x64c3d93231c7 - btrfs_backup::repo::tests::snapshot_creation::{{closure}}::h2ec597f4dd1e19f7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:440:25
[INFO] [stdout]   27:     0x64c3d93865b6 - core::ops::function::FnOnce::call_once::h776a00774cacf5d8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::subvolume_readonly stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::subvolume_readonly' (26) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::subvolume_readonly::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:617:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::subvolume_readonly
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:615:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::subvolume_readonly::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:616:26
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cbc56 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cbc56 - btrfs_backup::test::with_btrfs::h329eaec831537547
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f5b2a - btrfs_backup::btrfs::btrfs::tests::subvolume_readonly::{{closure}}::hef180dcc2c911586
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:617:5
[INFO] [stdout]   23:     0x64c3d93867ee - core::ops::function::FnOnce::call_once::h912ab64639bfbc3a
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f5ada - btrfs_backup::btrfs::btrfs::tests::subvolume_readonly::hd8554d4ca6894876
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:615:3
[INFO] [stdout]   26:     0x64c3d92f5b07 - btrfs_backup::btrfs::btrfs::tests::subvolume_readonly::{{closure}}::ha13002770726b617
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:616:26
[INFO] [stdout]   27:     0x64c3d9386526 - core::ops::function::FnOnce::call_once::h73afab0103f9b942
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::restore_subvolume_missing_snapshot stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::restore_subvolume_missing_snapshot' (61) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::restore_subvolume_missing_snapshot::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:878:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::restore_subvolume_missing_snapshot
[INFO] [stdout]              at ./src/repo.rs:874:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::restore_subvolume_missing_snapshot::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:875:42
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cef5b - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cef5b - btrfs_backup::test::with_two_btrfs::h43cd3cfefd4e9516
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d932b3f9 - btrfs_backup::repo::tests::restore_subvolume_missing_snapshot::{{closure}}::h7fd6526d27f0d0be
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:878:5
[INFO] [stdout]   23:     0x64c3d9385d3e - core::ops::function::FnOnce::call_once::h3277bffc3e81a2da
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932b38a - btrfs_backup::repo::tests::restore_subvolume_missing_snapshot::h8438ed50480b67e6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:874:3
[INFO] [stdout]   26:     0x64c3d932b3b7 - btrfs_backup::repo::tests::restore_subvolume_missing_snapshot::{{closure}}::h1800db4e2d8d0e2a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:875:42
[INFO] [stdout]   27:     0x64c3d9385d76 - core::ops::function::FnOnce::call_once::h34d638dd03420001
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::tagged_snapshot_creation stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::tagged_snapshot_creation' (75) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::tagged_snapshot_creation::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:463:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::tagged_snapshot_creation
[INFO] [stdout]              at ./src/repo.rs:459:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::tagged_snapshot_creation::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:460:32
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92ccfe3 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92ccfe3 - btrfs_backup::test::with_btrfs::h8fb15267a0cab59a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d9326015 - btrfs_backup::repo::tests::tagged_snapshot_creation::{{closure}}::h4bd311abf9c4ee3c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:463:5
[INFO] [stdout]   23:     0x64c3d9385abe - core::ops::function::FnOnce::call_once::h29a9979da677f927
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d9325fda - btrfs_backup::repo::tests::tagged_snapshot_creation::h0ebe7c4c0b893868
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:459:3
[INFO] [stdout]   26:     0x64c3d9326037 - btrfs_backup::repo::tests::tagged_snapshot_creation::{{closure}}::h74a5eef726fa2051
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:460:32
[INFO] [stdout]   27:     0x64c3d9386166 - core::ops::function::FnOnce::call_once::h5967c14f6d1589d3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::writable_snapshot_listing stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::writable_snapshot_listing' (77) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::writable_snapshot_listing::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:630:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::writable_snapshot_listing
[INFO] [stdout]              at ./src/repo.rs:626:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::writable_snapshot_listing::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:627:33
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92caf50 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92caf50 - btrfs_backup::test::with_btrfs::h131d1019d7135a76
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d9326b19 - btrfs_backup::repo::tests::writable_snapshot_listing::{{closure}}::hbd8554fc3d990a66
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:630:5
[INFO] [stdout]   23:     0x64c3d938665e - core::ops::function::FnOnce::call_once::h82aa7bc731902e76
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d9326aaa - btrfs_backup::repo::tests::writable_snapshot_listing::hbe2ed533f1aead81
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:626:3
[INFO] [stdout]   26:     0x64c3d9326ad7 - btrfs_backup::repo::tests::writable_snapshot_listing::{{closure}}::h921ad05d6cf92036
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:627:33
[INFO] [stdout]   27:     0x64c3d9385b76 - core::ops::function::FnOnce::call_once::h2bf1489c7de547d3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::snapshot_outside_repo stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::snapshot_outside_repo' (73) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::snapshot_outside_repo::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:600:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::snapshot_outside_repo
[INFO] [stdout]              at ./src/repo.rs:596:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::snapshot_outside_repo::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:597:29
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cd330 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cd330 - btrfs_backup::test::with_btrfs::h9d3e18361b1c653f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d9324a69 - btrfs_backup::repo::tests::snapshot_outside_repo::{{closure}}::h16c1d8963ff5f0d8
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:600:5
[INFO] [stdout]   23:     0x64c3d938586e - core::ops::function::FnOnce::call_once::h10095afaf59bb93e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d9324a2a - btrfs_backup::repo::tests::snapshot_outside_repo::h05014ca32d0b198f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:596:3
[INFO] [stdout]   26:     0x64c3d9324a87 - btrfs_backup::repo::tests::snapshot_outside_repo::{{closure}}::h683b53f51d442536
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:597:29
[INFO] [stdout]   27:     0x64c3d9386dc6 - core::ops::function::FnOnce::call_once::he3850a73d05f37f6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::snapshot_creation_up_to_date_tagged stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::snapshot_creation_up_to_date_tagged' (69) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::snapshot_creation_up_to_date_tagged::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:508:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::snapshot_creation_up_to_date_tagged
[INFO] [stdout]              at ./src/repo.rs:506:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::snapshot_creation_up_to_date_tagged::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:507:43
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92ce006 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92ce006 - btrfs_backup::test::with_btrfs::hfc09c92c1a4073a6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d932d35a - btrfs_backup::repo::tests::snapshot_creation_up_to_date_tagged::{{closure}}::hcabd642311334082
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:508:5
[INFO] [stdout]   23:     0x64c3d938581e - core::ops::function::FnOnce::call_once::h0d99374ff69684a1
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932d33a - btrfs_backup::repo::tests::snapshot_creation_up_to_date_tagged::hbecd8fbc6a220bf3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:506:3
[INFO] [stdout]   26:     0x64c3d932d377 - btrfs_backup::repo::tests::snapshot_creation_up_to_date_tagged::{{closure}}::hf6aa278134ef60e3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:507:43
[INFO] [stdout]   27:     0x64c3d9386c46 - core::ops::function::FnOnce::call_once::hd2ac38878cb49a67
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::subvolumes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::subvolumes' (27) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::subvolumes::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:472:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::subvolumes
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:470:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::subvolumes::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:471:18
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cdcd6 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cdcd6 - btrfs_backup::test::with_btrfs::hf33035d2963494bc
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f24ba - btrfs_backup::btrfs::btrfs::tests::subvolumes::{{closure}}::h3df96c41c737e645
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:472:5
[INFO] [stdout]   23:     0x64c3d9386c7e - core::ops::function::FnOnce::call_once::hd3e79044a0b9185e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f249a - btrfs_backup::btrfs::btrfs::tests::subvolumes::h2d6fc993bbb3ab3f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:470:3
[INFO] [stdout]   26:     0x64c3d92f24d7 - btrfs_backup::btrfs::btrfs::tests::subvolumes::{{closure}}::h7bbf40a376310eca
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:471:18
[INFO] [stdout]   27:     0x64c3d9386976 - core::ops::function::FnOnce::call_once::h9d042dc88ca66542
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- test::tests::create_mount_btrfs stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test::tests::create_mount_btrfs' (85) panicked at src/test.rs:341:44:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::tests::create_mount_btrfs::{{closure}}
[INFO] [stdout]              at ./src/test.rs:341:19
[INFO] [stdout]    9: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   10: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   11: btrfs_backup::test::tests::create_mount_btrfs
[INFO] [stdout]              at ./src/test.rs:339:3
[INFO] [stdout]   12: btrfs_backup::test::tests::create_mount_btrfs::{{closure}}
[INFO] [stdout]              at ./src/test.rs:340:26
[INFO] [stdout]   13: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   16: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   17: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   18: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   19: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   20: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   21: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   22: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   24: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   25: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   26: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   30: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   31: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   33: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   34: <unknown>
[INFO] [stdout]   35: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d932de93 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d932de93 - btrfs_backup::test::tests::create_mount_btrfs::{{closure}}::hae0e262dd107c1d5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:341:44
[INFO] [stdout]   22:     0x64c3d93862ae - core::ops::function::FnOnce::call_once::h5f5d1456fd7444cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   24:     0x64c3d932ddda - btrfs_backup::test::tests::create_mount_btrfs::h8c8d32028865fa1c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:339:3
[INFO] [stdout]   25:     0x64c3d932de07 - btrfs_backup::test::tests::create_mount_btrfs::{{closure}}::h6d77ec55ccda0450
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:340:26
[INFO] [stdout]   26:     0x64c3d9386276 - core::ops::function::FnOnce::call_once::h5c7709faab0e348f
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   38:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   39:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   44:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   46:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   47:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   48:     0x793777c14a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::snapshot_listing stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::snapshot_listing' (71) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::repo::tests::snapshot_listing::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:576:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::snapshot_listing
[INFO] [stdout]              at ./src/repo.rs:572:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::snapshot_listing::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:573:24
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cc630 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cc630 - btrfs_backup::test::with_btrfs::h5ab8c7d003168ed5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d93212f9 - btrfs_backup::repo::tests::snapshot_listing::{{closure}}::h9e6090e66d60e6e3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:576:5
[INFO] [stdout]   23:     0x64c3d9386bae - core::ops::function::FnOnce::call_once::hd1ce7a7886110f7d
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d932128a - btrfs_backup::repo::tests::snapshot_listing::h274240205a3d48f4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:572:3
[INFO] [stdout]   26:     0x64c3d93212b7 - btrfs_backup::repo::tests::snapshot_listing::{{closure}}::h24b6cf8ec89ece91
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:573:24
[INFO] [stdout]   27:     0x64c3d9385a86 - core::ops::function::FnOnce::call_once::h299621076bc58b40
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- repo::tests::restore_subvolume_exists stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'repo::tests::restore_subvolume_exists' (59) panicked at src/test.rs:313:43:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_two_btrfs
[INFO] [stdout]              at ./src/test.rs:313:18
[INFO] [stdout]    9: btrfs_backup::repo::tests::restore_subvolume_exists::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:850:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::repo::tests::restore_subvolume_exists
[INFO] [stdout]              at ./src/repo.rs:846:3
[INFO] [stdout]   13: btrfs_backup::repo::tests::restore_subvolume_exists::{{closure}}
[INFO] [stdout]              at ./src/repo.rs:847:32
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92d177b - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92d177b - btrfs_backup::test::with_two_btrfs::hfbdd15399f6d0a24
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:313:43
[INFO] [stdout]   22:     0x64c3d9325659 - btrfs_backup::repo::tests::restore_subvolume_exists::{{closure}}::hc9c04d2394470c43
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:850:5
[INFO] [stdout]   23:     0x64c3d9385c4e - core::ops::function::FnOnce::call_once::h316e2a5bb893ce95
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d93255ea - btrfs_backup::repo::tests::restore_subvolume_exists::hf5be7108cc18f06e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:846:3
[INFO] [stdout]   26:     0x64c3d9325617 - btrfs_backup::repo::tests::restore_subvolume_exists::{{closure}}::h1c2fa2a923d6e30e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/repo.rs:847:32
[INFO] [stdout]   27:     0x64c3d9386476 - core::ops::function::FnOnce::call_once::h6dbd374336b1d322
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::filesystem_sync stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::filesystem_sync' (21) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::filesystem_sync::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:432:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::filesystem_sync
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:430:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::filesystem_sync::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:431:23
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cc2e6 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cc2e6 - btrfs_backup::test::with_btrfs::h5a082805e0e26c73
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f446a - btrfs_backup::btrfs::btrfs::tests::filesystem_sync::{{closure}}::h842a13f53880dfe6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:432:5
[INFO] [stdout]   23:     0x64c3d9385bae - core::ops::function::FnOnce::call_once::h2c4e7409c3dd562d
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f444a - btrfs_backup::btrfs::btrfs::tests::filesystem_sync::haec7eed7dd9e60ac
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:430:3
[INFO] [stdout]   26:     0x64c3d92f4487 - btrfs_backup::btrfs::btrfs::tests::filesystem_sync::{{closure}}::he9b94440fbf49f0d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:431:23
[INFO] [stdout]   27:     0x64c3d9386776 - core::ops::function::FnOnce::call_once::h8f7069bd24f1792e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- btrfs::btrfs::tests::subvol_changes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'btrfs::btrfs::tests::subvol_changes' (23) panicked at src/test.rs:300:42:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::BtrfsDev::new
[INFO] [stdout]              at ./src/test.rs:129:18
[INFO] [stdout]    7: btrfs_backup::test::BtrfsDev::with_default
[INFO] [stdout]              at ./src/test.rs:140:5
[INFO] [stdout]    8: btrfs_backup::test::with_btrfs
[INFO] [stdout]              at ./src/test.rs:300:17
[INFO] [stdout]    9: btrfs_backup::btrfs::btrfs::tests::subvol_changes::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:557:5
[INFO] [stdout]   10: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   11: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   12: btrfs_backup::btrfs::btrfs::tests::subvol_changes
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:555:3
[INFO] [stdout]   13: btrfs_backup::btrfs::btrfs::tests::subvol_changes::{{closure}}
[INFO] [stdout]              at ./src/btrfs/btrfs.rs:556:22
[INFO] [stdout]   14: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   15: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   16: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   17: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   19: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   20: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   21: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   22: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   23: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   24: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   25: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   26: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   27: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   31: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   32: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   34: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   35: <unknown>
[INFO] [stdout]   36: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d92cc976 - core::result::Result<T,E>::unwrap::he57cf4ca6a666ed6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d92cc976 - btrfs_backup::test::with_btrfs::h85b3ff399ffd16e9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:300:42
[INFO] [stdout]   22:     0x64c3d92f37ca - btrfs_backup::btrfs::btrfs::tests::subvol_changes::{{closure}}::h687c822a6cc621bd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:557:5
[INFO] [stdout]   23:     0x64c3d9385a4e - core::ops::function::FnOnce::call_once::h28934cba52eff099
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   25:     0x64c3d92f37aa - btrfs_backup::btrfs::btrfs::tests::subvol_changes::hbf5fdf912ecedde8
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:555:3
[INFO] [stdout]   26:     0x64c3d92f37e7 - btrfs_backup::btrfs::btrfs::tests::subvol_changes::{{closure}}::hf0cd6f45ebb7b0fc
[INFO] [stdout]                                at /opt/rustwide/workdir/src/btrfs/btrfs.rs:556:22
[INFO] [stdout]   27:     0x64c3d93867b6 - core::ops::function::FnOnce::call_once::h9040d73ca48e6e53
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   49:     0x793777c14a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- test::tests::create_destroy_loopdev stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test::tests::create_destroy_loopdev' (83) panicked at src/test.rs:334:39:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: `losetup --find --nooverlap` reported non-zero exit-status (1): losetup: cannot find an unused loop device: No such file or directory
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: anyhow::error::<impl anyhow::Error>::msg
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.99/src/backtrace.rs:27:14
[INFO] [stdout]    1: btrfs_backup::util::evaluate
[INFO] [stdout]              at ./src/util.rs:276:5
[INFO] [stdout]    2: btrfs_backup::util::run_impl
[INFO] [stdout]              at ./src/util.rs:303:12
[INFO] [stdout]    3: btrfs_backup::util::output
[INFO] [stdout]              at ./src/util.rs:325:16
[INFO] [stdout]    4: btrfs_backup::test::LoopDev::empty
[INFO] [stdout]              at ./src/test.rs:47:20
[INFO] [stdout]    5: btrfs_backup::test::LoopDev::new
[INFO] [stdout]              at ./src/test.rs:71:19
[INFO] [stdout]    6: btrfs_backup::test::tests::create_destroy_loopdev::{{closure}}
[INFO] [stdout]              at ./src/test.rs:334:20
[INFO] [stdout]    7: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]    8: serial_test::serial_code_lock::local_serial_core
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]    9: btrfs_backup::test::tests::create_destroy_loopdev
[INFO] [stdout]              at ./src/test.rs:332:3
[INFO] [stdout]   10: btrfs_backup::test::tests::create_destroy_loopdev::{{closure}}
[INFO] [stdout]              at ./src/test.rs:333:30
[INFO] [stdout]   11: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   12: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   13: test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   14: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   15: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   16: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   17: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   18: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   19: test::run_test_in_process
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   20: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   21: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   22: std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   23: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   24: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   25: std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   26: std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   27: std::panic::catch_unwind
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   28: std::thread::Builder::spawn_unchecked_::{{closure}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   29: core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   30: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   31: std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   32: <unknown>
[INFO] [stdout]   33: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x64c3d96750a2 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x64c3d96750a2 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x64c3d96750a2 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x64c3d96750a2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x64c3d968692f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x64c3d968692f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x64c3d963fc83 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x64c3d963fc83 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x64c3d964c652 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x64c3d96527df - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x64c3d9652671 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x64c3d93b0e4e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x64c3d93b0e4e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x64c3d9652def - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x64c3d9652def - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x64c3d9652c4a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x64c3d964c789 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x64c3d96334fd - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x64c3d968f590 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x64c3d968e596 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x64c3d932e17c - core::result::Result<T,E>::unwrap::h08be675f3297265c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x64c3d932e17c - btrfs_backup::test::tests::create_destroy_loopdev::{{closure}}::h376426facc06a5b5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:334:39
[INFO] [stdout]   22:     0x64c3d93864ae - core::ops::function::FnOnce::call_once::h6dc59a2509b2e5b9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x64c3d93f2b63 - serial_test::serial_code_lock::local_serial_core::h31de511c232251ff
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serial_test-3.2.0/src/serial_code_lock.rs:36:5
[INFO] [stdout]   24:     0x64c3d932e0fa - btrfs_backup::test::tests::create_destroy_loopdev::h12fded4976f9c222
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:332:3
[INFO] [stdout]   25:     0x64c3d932e1f7 - btrfs_backup::test::tests::create_destroy_loopdev::{{closure}}::hf9c25aabff29c546
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:333:30
[INFO] [stdout]   26:     0x64c3d93857e6 - core::ops::function::FnOnce::call_once::h07fa5e439ee949db
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x64c3d93b0cbb - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x64c3d93b0cbb - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x64c3d93c4cad - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x64c3d93c4cad - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x64c3d93c4cad - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   32:     0x64c3d93c4cad - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   33:     0x64c3d93c4cad - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x64c3d93c4cad - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x64c3d93c4cad - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x64c3d939e1f4 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x64c3d939e1f4 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   38:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   39:     0x64c3d93a1a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x64c3d93a1a4a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   41:     0x64c3d93a1a4a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   42:     0x64c3d93a1a4a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x64c3d93a1a4a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   44:     0x64c3d93a1a4a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x64c3d9647a6f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   46:     0x64c3d9647a6f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   47:     0x793777b87aa4 - <unknown>
[INFO] [stdout]   48:     0x793777c14a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     btrfs::btrfs::tests::filesystem_check
[INFO] [stdout]     btrfs::btrfs::tests::filesystem_sync
[INFO] [stdout]     btrfs::btrfs::tests::snapshot_send_recv
[INFO] [stdout]     btrfs::btrfs::tests::subvol_changes
[INFO] [stdout]     btrfs::btrfs::tests::subvol_creation_deletion
[INFO] [stdout]     btrfs::btrfs::tests::subvol_id_resolution
[INFO] [stdout]     btrfs::btrfs::tests::subvolume_readonly
[INFO] [stdout]     btrfs::btrfs::tests::subvolumes
[INFO] [stdout]     btrfs::btrfs::tests::subvolumes_in_subdir
[INFO] [stdout]     repo::tests::backup_non_existent_subvolume
[INFO] [stdout]     repo::tests::backup_subvolume
[INFO] [stdout]     repo::tests::backup_subvolume_incremental
[INFO] [stdout]     repo::tests::backup_subvolume_up_to_date
[INFO] [stdout]     repo::tests::backup_subvolume_with_subvol_option
[INFO] [stdout]     repo::tests::no_snapshots_in_empty_repo
[INFO] [stdout]     repo::tests::restore_snapshot_only
[INFO] [stdout]     repo::tests::restore_subvolume
[INFO] [stdout]     repo::tests::restore_subvolume_exists
[INFO] [stdout]     repo::tests::restore_subvolume_missing_snapshot
[INFO] [stdout]     repo::tests::snapshot_creation
[INFO] [stdout]     repo::tests::snapshot_creation_on_change
[INFO] [stdout]     repo::tests::snapshot_creation_up_to_date
[INFO] [stdout]     repo::tests::snapshot_creation_up_to_date_tagged
[INFO] [stdout]     repo::tests::snapshot_listing
[INFO] [stdout]     repo::tests::snapshot_outside_repo
[INFO] [stdout]     repo::tests::tagged_snapshot_creation
[INFO] [stdout]     repo::tests::writable_snapshot_listing
[INFO] [stdout]     test::tests::create_destroy_loopdev
[INFO] [stdout]     test::tests::create_mount_btrfs
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 16 passed; 29 failed; 0 ignored; 0 measured; 0 filtered out; finished in 8.93s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "831b00a44f596f601ecc2e8428800b487acee1330e209ec09c5ffb591526946b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "831b00a44f596f601ecc2e8428800b487acee1330e209ec09c5ffb591526946b", kill_on_drop: false }`
[INFO] [stdout] 831b00a44f596f601ecc2e8428800b487acee1330e209ec09c5ffb591526946b
