[INFO] fetching crate fuse-backend-rs 0.1.1...
[INFO] testing fuse-backend-rs-0.1.1 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate fuse-backend-rs 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate fuse-backend-rs 0.1.1 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuse-backend-rs 0.1.1
[INFO] finished tweaking crates.io crate fuse-backend-rs 0.1.1
[INFO] tweaked toml for crates.io crate fuse-backend-rs 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1db70aabcd8ae35cb56d95a06c60df5ece21538324d82b29268848c5493b313
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a1db70aabcd8ae35cb56d95a06c60df5ece21538324d82b29268848c5493b313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1db70aabcd8ae35cb56d95a06c60df5ece21538324d82b29268848c5493b313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1db70aabcd8ae35cb56d95a06c60df5ece21538324d82b29268848c5493b313", kill_on_drop: false }`
[INFO] [stdout] a1db70aabcd8ae35cb56d95a06c60df5ece21538324d82b29268848c5493b313
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b50312c74e3f78490aa8d6fcbc14bfdc02e1b3f9f63546186c81c2851fa856f0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b50312c74e3f78490aa8d6fcbc14bfdc02e1b3f9f63546186c81c2851fa856f0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling arc-swap v1.3.0
[INFO] [stderr]    Compiling vm-memory v0.4.0
[INFO] [stderr]    Compiling vmm-sys-util v0.4.0
[INFO] [stderr]    Compiling epoll v4.3.1
[INFO] [stderr]    Compiling fuse-backend-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this attribute can only be applied to a `use` item
[INFO] [stdout]   --> src/api/filesystem/mod.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[doc(inline)]
[INFO] [stdout]    |       ^^^^^^ only applicable on `use` items
[INFO] [stdout] 24 | mod sync_io;
[INFO] [stdout]    | ------------ not a `use` item
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout]    = note: read https://doc.rust-lang.org/nightly/rustdoc/the-doc-attribute.html#docno_inlinedocinline for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/passthrough/mod.rs:497:38
[INFO] [stdout]     |
[INFO] [stdout] 497 |                     if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/passthrough/mod.rs:565:34
[INFO] [stdout]     |
[INFO] [stdout] 565 |                 if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.06s
[INFO] running `Command { std: "docker" "inspect" "b50312c74e3f78490aa8d6fcbc14bfdc02e1b3f9f63546186c81c2851fa856f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b50312c74e3f78490aa8d6fcbc14bfdc02e1b3f9f63546186c81c2851fa856f0", kill_on_drop: false }`
[INFO] [stdout] b50312c74e3f78490aa8d6fcbc14bfdc02e1b3f9f63546186c81c2851fa856f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 909ff6e250c561898fc7c0282a3d86778018125a4bd3ec28fbc4500d1135de1e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "909ff6e250c561898fc7c0282a3d86778018125a4bd3ec28fbc4500d1135de1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stdout] warning: this attribute can only be applied to a `use` item
[INFO] [stdout]   --> src/api/filesystem/mod.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[doc(inline)]
[INFO] [stdout]    |       ^^^^^^ only applicable on `use` items
[INFO] [stdout] 24 | mod sync_io;
[INFO] [stdout]    | ------------ not a `use` item
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout]    = note: read https://doc.rust-lang.org/nightly/rustdoc/the-doc-attribute.html#docno_inlinedocinline for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/passthrough/mod.rs:497:38
[INFO] [stdout]     |
[INFO] [stdout] 497 |                     if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/passthrough/mod.rs:565:34
[INFO] [stdout]     |
[INFO] [stdout] 565 |                 if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling stderrlog v0.4.3
[INFO] [stderr]    Compiling fuse-backend-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/smoke.rs:70:20
[INFO] [stdout]    |
[INFO] [stdout] 70 |               panic!(format!(
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 71 | |                 "exec failed: {}: {}",
[INFO] [stdout] 72 | |                 cmd,
[INFO] [stdout] 73 | |                 std::str::from_utf8(&output.stderr).unwrap()
[INFO] [stdout] 74 | |             ));
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 70 |             panic!(
[INFO] [stdout] 71 |                 "exec failed: {}: {}",
[INFO] [stdout] 72 |                 cmd,
[INFO] [stdout] 73 |                 std::str::from_utf8(&output.stderr).unwrap()
[INFO] [stdout] 74 |             );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this attribute can only be applied to a `use` item
[INFO] [stdout]   --> src/api/filesystem/mod.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[doc(inline)]
[INFO] [stdout]    |       ^^^^^^ only applicable on `use` items
[INFO] [stdout] 24 | mod sync_io;
[INFO] [stdout]    | ------------ not a `use` item
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout]    = note: read https://doc.rust-lang.org/nightly/rustdoc/the-doc-attribute.html#docno_inlinedocinline for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/passthrough/mod.rs:497:38
[INFO] [stdout]     |
[INFO] [stdout] 497 |                     if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/passthrough/mod.rs:565:34
[INFO] [stdout]     |
[INFO] [stdout] 565 |                 if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.98s
[INFO] running `Command { std: "docker" "inspect" "909ff6e250c561898fc7c0282a3d86778018125a4bd3ec28fbc4500d1135de1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "909ff6e250c561898fc7c0282a3d86778018125a4bd3ec28fbc4500d1135de1e", kill_on_drop: false }`
[INFO] [stdout] 909ff6e250c561898fc7c0282a3d86778018125a4bd3ec28fbc4500d1135de1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0cec22f2c63635dcce5774442008a4e30ff5ca18ad6f8fce61f790fe00530a97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0cec22f2c63635dcce5774442008a4e30ff5ca18ad6f8fce61f790fe00530a97", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: this attribute can only be applied to a `use` item
[INFO] [stdout] running 65 tests
[INFO] [stderr]   --> src/api/filesystem/mod.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 | #[doc(inline)]
[INFO] [stderr]    |       ^^^^^^ only applicable on `use` items
[INFO] [stderr] 24 | mod sync_io;
[INFO] [stderr]    | ------------ not a `use` item
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stderr]    = note: read https://doc.rust-lang.org/nightly/rustdoc/the-doc-attribute.html#docno_inlinedocinline for more information
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/passthrough/mod.rs:497:38
[INFO] [stderr]     |
[INFO] [stderr] 497 |                     if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/passthrough/mod.rs:565:34
[INFO] [stderr]     |
[INFO] [stderr] 565 |                 if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: this attribute can only be applied to a `use` item
[INFO] [stderr]   --> src/api/filesystem/mod.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 | #[doc(inline)]
[INFO] [stderr]    |       ^^^^^^ only applicable on `use` items
[INFO] [stderr] 24 | mod sync_io;
[INFO] [stderr]    | ------------ not a `use` item
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stderr]    = note: read https://doc.rust-lang.org/nightly/rustdoc/the-doc-attribute.html#docno_inlinedocinline for more information
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/passthrough/mod.rs:497:38
[INFO] [stderr]     |
[INFO] [stderr] 497 |                     if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicU64::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/passthrough/mod.rs:565:34
[INFO] [stderr]     |
[INFO] [stderr] 565 |                 if data.refcount.compare_and_swap(curr, new, Ordering::AcqRel) == curr {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> tests/smoke.rs:70:20
[INFO] [stderr]    |
[INFO] [stderr] 70 |               panic!(format!(
[INFO] [stderr]    |  ____________________^
[INFO] [stderr] 71 | |                 "exec failed: {}: {}",
[INFO] [stderr] 72 | |                 cmd,
[INFO] [stderr] 73 | |                 std::str::from_utf8(&output.stderr).unwrap()
[INFO] [stderr] 74 | |             ));
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]    |
[INFO] [stderr] 70 |             panic!(
[INFO] [stderr] 71 |                 "exec failed: {}: {}",
[INFO] [stderr] 72 |                 cmd,
[INFO] [stderr] 73 |                 std::str::from_utf8(&output.stderr).unwrap()
[INFO] [stderr] 74 |             );
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fuse_backend_rs-49dfdb947237a650)
[INFO] [stdout] test abi::linux_abi::tests::test_byte_valued ... ok
[INFO] [stdout] test api::pseudo_fs::tests::test_pseudofs_access ... ok
[INFO] [stdout] test api::pseudo_fs::tests::test_pseudofs_getattr ... ok
[INFO] [stdout] test api::pseudo_fs::tests::test_pseudofs_new ... ok
[INFO] [stdout] test api::pseudo_fs::tests::test_pseudofs_readdir ... ok
[INFO] [stdout] test api::pseudo_fs::tests::test_pseudofs_readdir_plus ... ok
[INFO] [stdout] test api::server::tests::test_extract_cstrs ... ok
[INFO] [stdout] test api::vfs::tests::test_vfs_lookup ... ok
[INFO] [stdout] test passthrough::multikey::test::update_alt_key ... ok
[INFO] [stdout] test api::vfs::tests::test_vfs_init ... ok
[INFO] [stdout] test passthrough::multikey::test::update_both_keys_main ... ok
[INFO] [stdout] test passthrough::multikey::test::update_main_key ... ok
[INFO] [stdout] test tests::test_bytes_to_cstr ... ok
[INFO] [stdout] test tests::test_encode_io_error_kind ... ok
[INFO] [stdout] test transport::fusedev::session::tests::test_new_channel ... ok
[INFO] [stdout] test transport::fusedev::tests::read_obj ... ok
[INFO] [stdout] test api::pseudo_fs::tests::test_pseudofs_mount ... ok
[INFO] [stdout] test passthrough::multikey::test::update_value ... ok
[INFO] [stdout] test transport::fusedev::tests::read_full ... ok
[INFO] [stdout] test transport::file_traits::tests::test_read_at_volatile ... ok
[INFO] [stdout] test transport::file_traits::tests::test_write_volatile ... ok
[INFO] [stdout] test transport::file_traits::tests::test_read_exact_volatile ... ok
[INFO] [stdout] test transport::file_traits::tests::test_read_vectored_at_volatile ... ok
[INFO] [stdout] test transport::fusedev::session::tests::test_new_session ... ok
[INFO] [stdout] test api::filesystem::tests::test_into_fuse_entry ... ok
[INFO] [stdout] test passthrough::multikey::test::remove ... ok
[INFO] [stdout] test api::filesystem::tests::test_from_fuse_header ... ok
[INFO] [stdout] test transport::file_traits::tests::test_read_exact_at_volatile ... ok
[INFO] [stdout] test api::vfs::tests::test_umount ... ok
[INFO] [stdout] test transport::file_traits::tests::test_write_at_volatile ... ok
[INFO] [stdout] test api::vfs::tests::test_umount_overlap ... ok
[INFO] [stdout] test transport::file_traits::tests::test_write_vectored_volatile ... ok
[INFO] [stdout] test api::vfs::tests::test_inode ... ok
[INFO] [stdout] test passthrough::multikey::test::update_both_keys_alt ... ok
[INFO] [stdout] test transport::fusedev::tests::reader_split_outofbounds ... ok
[INFO] [stdout] test transport::fusedev::tests::read_exact_to ... ok
[INFO] [stdout] test transport::file_traits::tests::test_read_vectored_volatile ... ok
[INFO] [stdout] test transport::file_traits::tests::test_read_volatile ... ok
[INFO] [stdout] test transport::file_traits::tests::test_write_exact_at_volatile ... ok
[INFO] [stdout] test transport::fusedev::tests::read_to_at ... ok
[INFO] [stdout] test transport::fusedev::tests::reader_split_border ... ok
[INFO] [stdout] test api::vfs::tests::test_mount_different_fs_types ... ok
[INFO] [stdout] test api::vfs::tests::test_umount_same ... ok
[INFO] [stdout] test passthrough::multikey::test::get ... ok
[INFO] [stdout] test transport::file_traits::tests::test_write_exact_volatile ... ok
[INFO] [stdout] test transport::file_traits::tests::test_write_vectored_at_volatile ... ok
[INFO] [stdout] test abi::linux_abi::tests::test_struct_size ... ok
[INFO] [stdout] test api::pseudo_fs::tests::test_pseudofs_lookup ... ok
[INFO] [stdout] test transport::tests::test_io_buffers ... ok
[INFO] [stdout] test transport::fusedev::tests::writer_simple_commit_header ... ok
[INFO] [stdout] test transport::fusedev::tests::writer_test_split_chain ... ok
[INFO] [stdout] test transport::fusedev::tests::writer_test_simple_chain ... ok
[INFO] [stdout] test transport::fusedev::tests::write_full ... ok
[INFO] [stdout] test transport::fusedev::tests::write_all_from_split ... ok
[INFO] [stdout] test transport::fusedev::tests::reader_unexpected_eof ... ok
[INFO] [stdout] test transport::fusedev::tests::writer_split_commit_all ... ok
[INFO] [stdout] test transport::fusedev::tests::write_all_from ... ok
[INFO] [stdout] test api::vfs::tests::test_invalid_inode ... ok
[INFO] [stdout] test transport::fusedev::tests::write_from_at_split ... ok
[INFO] [stdout] test transport::fusedev::tests::write_vectored ... ok
[INFO] [stdout] test transport::fusedev::tests::writer_split_commit_header ... ok
[INFO] [stdout] test transport::fusedev::tests::write_obj ... ok
[INFO] [stdout] test transport::fusedev::tests::write_from_at ... ok
[INFO] [stdout] test transport::fusedev::tests::reader_test_simple_chain ... ok
[INFO] [stderr]      Running tests/smoke.rs (/opt/rustwide/target/debug/deps/smoke-5c0646d688cdc292)
[INFO] [stdout] test api::vfs::tests::test_allocate_fs_idx ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 65 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test fusedev_tests::integration_test_tree_gitrepo ... ignored
[INFO] [stderr]    Doc-tests fuse-backend-rs
[INFO] [stdout] test fusedev_tests::integration_test_init ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0cec22f2c63635dcce5774442008a4e30ff5ca18ad6f8fce61f790fe00530a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cec22f2c63635dcce5774442008a4e30ff5ca18ad6f8fce61f790fe00530a97", kill_on_drop: false }`
[INFO] [stdout] 0cec22f2c63635dcce5774442008a4e30ff5ca18ad6f8fce61f790fe00530a97