[INFO] cloning repository https://github.com/AlbertoCaballero/rustlings-solved
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlbertoCaballero/rustlings-solved" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbertoCaballero%2Frustlings-solved", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbertoCaballero%2Frustlings-solved'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb374a9c13d80d9359957564e8018dc25dbcb386
[INFO] testing AlbertoCaballero/rustlings-solved against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbertoCaballero%2Frustlings-solved" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlbertoCaballero/rustlings-solved on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AlbertoCaballero/rustlings-solved
[INFO] finished tweaking git repo https://github.com/AlbertoCaballero/rustlings-solved
[INFO] tweaked toml for git repo https://github.com/AlbertoCaballero/rustlings-solved written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/AlbertoCaballero/rustlings-solved already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e79a31f5ce2d1cda26eb23f7cbbc8d0d8ed20caabf628e46d46f72ad90f04417
[INFO] running `Command { std: "docker" "start" "-a" "e79a31f5ce2d1cda26eb23f7cbbc8d0d8ed20caabf628e46d46f72ad90f04417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e79a31f5ce2d1cda26eb23f7cbbc8d0d8ed20caabf628e46d46f72ad90f04417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e79a31f5ce2d1cda26eb23f7cbbc8d0d8ed20caabf628e46d46f72ad90f04417", kill_on_drop: false }`
[INFO] [stdout] e79a31f5ce2d1cda26eb23f7cbbc8d0d8ed20caabf628e46d46f72ad90f04417
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 218de227451986219b3c27a8d32b267b18994ea5a0327d444df36bade35e3005
[INFO] running `Command { std: "docker" "start" "-a" "218de227451986219b3c27a8d32b267b18994ea5a0327d444df36bade35e3005", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling lock_api v0.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling regex-syntax v0.6.6
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]    Compiling rand_os v0.1.3
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[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.5
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling inotify v0.7.0
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling number_prefix v0.2.8
[INFO] [stderr]    Compiling mio-extras v2.0.5
[INFO] [stderr]    Compiling notify v4.0.15
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling console v0.8.0
[INFO] [stderr]    Compiling console v0.7.7
[INFO] [stderr]    Compiling indicatif v0.10.3
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling rustlings v4.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.76s
[INFO] running `Command { std: "docker" "inspect" "218de227451986219b3c27a8d32b267b18994ea5a0327d444df36bade35e3005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "218de227451986219b3c27a8d32b267b18994ea5a0327d444df36bade35e3005", kill_on_drop: false }`
[INFO] [stdout] 218de227451986219b3c27a8d32b267b18994ea5a0327d444df36bade35e3005
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84d3e142b5a3dac806f0ee6a6cb2680f30e957cf0dda06e21d1b2f33af070008
[INFO] running `Command { std: "docker" "start" "-a" "84d3e142b5a3dac806f0ee6a6cb2680f30e957cf0dda06e21d1b2f33af070008", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]    Compiling predicates-core v1.0.0
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling normalize-line-endings v0.2.2
[INFO] [stderr]    Compiling float-cmp v0.4.0
[INFO] [stderr]    Compiling predicates-tree v1.0.0
[INFO] [stderr]    Compiling predicates v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling assert_cmd v0.11.1
[INFO] [stderr]    Compiling rustlings v4.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.16s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-6992516b5db2acc8)
[INFO] [stderr]   Executable tests/integration_tests.rs (/opt/rustwide/target/debug/deps/integration_tests-f84197423d94044c)
[INFO] running `Command { std: "docker" "inspect" "84d3e142b5a3dac806f0ee6a6cb2680f30e957cf0dda06e21d1b2f33af070008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84d3e142b5a3dac806f0ee6a6cb2680f30e957cf0dda06e21d1b2f33af070008", kill_on_drop: false }`
[INFO] [stdout] 84d3e142b5a3dac806f0ee6a6cb2680f30e957cf0dda06e21d1b2f33af070008
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e9a9731d6c9b21574ba097c61aef878d7291fead511f138bd0a70501b0bb9f73
[INFO] running `Command { std: "docker" "start" "-a" "e9a9731d6c9b21574ba097c61aef878d7291fead511f138bd0a70501b0bb9f73", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-6992516b5db2acc8)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test exercise::test::test_finished_exercise ... ok
[INFO] [stdout] test exercise::test::test_pending_state ... ok
[INFO] [stdout] test exercise::test::test_clean ... FAILED
[INFO] [stdout] test exercise::test::test_exercise_with_output ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_clean stdout ----
[INFO] [stdout] thread 'exercise::test::test_clean' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }', src/exercise.rs:250:36
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55e5ea75316d - std::backtrace_rs::backtrace::libunwind::trace::ha359b7f0090e2792
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55e5ea75316d - std::backtrace_rs::backtrace::trace_unsynchronized::h0584631f25c1d70e
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55e5ea75316d - std::sys_common::backtrace::_print_fmt::hdadffd97d279ff14
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stdout]    3:     0x55e5ea75316d - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h26f189e611080a74
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stdout]    4:     0x55e5ea775c4c - core::fmt::write::hfb5d11dfe037e8b7
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/fmt/mod.rs:1194:17
[INFO] [stdout]    5:     0x55e5ea74fb11 - std::io::Write::write_fmt::h6a24ec64406df9e2
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/io/mod.rs:1655:15
[INFO] [stdout]    6:     0x55e5ea754eb5 - std::sys_common::backtrace::_print::h7a0e44402913ba60
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stdout]    7:     0x55e5ea754eb5 - std::sys_common::backtrace::print::h9767dc455a84e728
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stdout]    8:     0x55e5ea754eb5 - std::panicking::default_hook::{{closure}}::h60afd6c8b12988ad
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:295:22
[INFO] [stdout]    9:     0x55e5ea754ba4 - std::panicking::default_hook::ha7b9bac6813f9d21
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:311:9
[INFO] [stdout]   10:     0x55e5ea755402 - std::panicking::rust_panic_with_hook::h7b117a162a6f8664
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:698:17
[INFO] [stdout]   11:     0x55e5ea7552e7 - std::panicking::begin_panic_handler::{{closure}}::h346750923c608600
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:588:13
[INFO] [stdout]   12:     0x55e5ea753624 - std::sys_common::backtrace::__rust_end_short_backtrace::h768c56c6a0c055c0
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stdout]   13:     0x55e5ea755019 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:584:5
[INFO] [stdout]   14:     0x55e5ea57c933 - core::panicking::panic_fmt::h5c41cb2fa118fdbc
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/panicking.rs:143:14
[INFO] [stdout]   15:     0x55e5ea57ca23 - core::result::unwrap_failed::h6bc7b183ec719494
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/result.rs:1785:5
[INFO] [stdout]   16:     0x55e5ea586ce0 - core::result::Result<T,E>::unwrap::h060ddc79d90fb4df
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/result.rs:1078:23
[INFO] [stdout]   17:     0x55e5ea587ff9 - rustlings::exercise::test::test_clean::h57e2202d3d62e506
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:250:9
[INFO] [stdout]   18:     0x55e5ea587f8a - rustlings::exercise::test::test_clean::{{closure}}::h83b2aeaaff7b2f4f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:249:5
[INFO] [stdout]   19:     0x55e5ea585dae - core::ops::function::FnOnce::call_once::he55dbae333a5f770
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x55e5ea5c1313 - core::ops::function::FnOnce::call_once::h018fc248431ce8de
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x55e5ea5c1313 - test::__rust_begin_short_backtrace::h293b982b6069d6e3
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:574:5
[INFO] [stdout]   22:     0x55e5ea5c00c9 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h4fc1be1a762c7a46
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/alloc/src/boxed.rs:1861:9
[INFO] [stdout]   23:     0x55e5ea5c00c9 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd44623ec51b9e897
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   24:     0x55e5ea5c00c9 - std::panicking::try::do_call::ha8cfa4b025f5b832
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:492:40
[INFO] [stdout]   25:     0x55e5ea5c00c9 - std::panicking::try::h664f75e41c112145
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:456:19
[INFO] [stdout]   26:     0x55e5ea5c00c9 - std::panic::catch_unwind::h4932ec05cd60558e
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panic.rs:137:14
[INFO] [stdout]   27:     0x55e5ea5c00c9 - test::run_test_in_process::ha14a47756671755c
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:597:18
[INFO] [stdout]   28:     0x55e5ea5c00c9 - test::run_test::run_test_inner::{{closure}}::h0ec9e37c8f67b62d
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:491:39
[INFO] [stdout]   29:     0x55e5ea58c27e - test::run_test::run_test_inner::{{closure}}::hd9d2e7f26d4f59e6
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:518:37
[INFO] [stdout]   30:     0x55e5ea58c27e - std::sys_common::backtrace::__rust_begin_short_backtrace::h41c0a39fac5123f8
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stdout]   31:     0x55e5ea5917e8 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h69a02ca0bebb6eeb
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/thread/mod.rs:498:17
[INFO] [stdout]   32:     0x55e5ea5917e8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hdd05632920ce689b
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   33:     0x55e5ea5917e8 - std::panicking::try::do_call::hb4947142729b90fd
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:492:40
[INFO] [stdout]   34:     0x55e5ea5917e8 - std::panicking::try::h15a7e9b8394e6878
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:456:19
[INFO] [stdout]   35:     0x55e5ea5917e8 - std::panic::catch_unwind::hbd3f4a3f9df49b85
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panic.rs:137:14
[INFO] [stdout]   36:     0x55e5ea5917e8 - std::thread::Builder::spawn_unchecked_::{{closure}}::h880b5d5f1b9799f4
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/thread/mod.rs:497:30
[INFO] [stdout]   37:     0x55e5ea5917e8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h304d5eaf401f5061
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x55e5ea759db3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hdba7f2afed0c35b3
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/alloc/src/boxed.rs:1861:9
[INFO] [stdout]   39:     0x55e5ea759db3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h38b0832765bf7961
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/alloc/src/boxed.rs:1861:9
[INFO] [stdout]   40:     0x55e5ea759db3 - std::sys::unix::thread::Thread::new::thread_start::h70236dc17753425e
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   41:     0x7ffbc7df8609 - start_thread
[INFO] [stdout]   42:     0x7ffbc7f4d163 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ----
[INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at 'called `Result::unwrap()` on an `Err` value: ExerciseOutput { stdout: "", stderr: "\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: could not write output to ./temp_8.1k1d1oofz1kj0cga.rcgu.o: Read-only file system\u{1b}[0m\n\n\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: aborting due to previous error\u{1b}[0m\n\n" }', src/exercise.rs:323:38
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55e5ea75316d - std::backtrace_rs::backtrace::libunwind::trace::ha359b7f0090e2792
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55e5ea75316d - std::backtrace_rs::backtrace::trace_unsynchronized::h0584631f25c1d70e
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55e5ea75316d - std::sys_common::backtrace::_print_fmt::hdadffd97d279ff14
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stdout]    3:     0x55e5ea75316d - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h26f189e611080a74
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stdout]    4:     0x55e5ea775c4c - core::fmt::write::hfb5d11dfe037e8b7
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/fmt/mod.rs:1194:17
[INFO] [stdout]    5:     0x55e5ea74fb11 - std::io::Write::write_fmt::h6a24ec64406df9e2
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/io/mod.rs:1655:15
[INFO] [stdout]    6:     0x55e5ea754eb5 - std::sys_common::backtrace::_print::h7a0e44402913ba60
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stdout]    7:     0x55e5ea754eb5 - std::sys_common::backtrace::print::h9767dc455a84e728
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stdout]    8:     0x55e5ea754eb5 - std::panicking::default_hook::{{closure}}::h60afd6c8b12988ad
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:295:22
[INFO] [stdout]    9:     0x55e5ea754ba4 - std::panicking::default_hook::ha7b9bac6813f9d21
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:311:9
[INFO] [stdout]   10:     0x55e5ea755402 - std::panicking::rust_panic_with_hook::h7b117a162a6f8664
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:698:17
[INFO] [stdout]   11:     0x55e5ea7552e7 - std::panicking::begin_panic_handler::{{closure}}::h346750923c608600
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:588:13
[INFO] [stdout]   12:     0x55e5ea753624 - std::sys_common::backtrace::__rust_end_short_backtrace::h768c56c6a0c055c0
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stdout]   13:     0x55e5ea755019 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:584:5
[INFO] [stdout]   14:     0x55e5ea57c933 - core::panicking::panic_fmt::h5c41cb2fa118fdbc
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/panicking.rs:143:14
[INFO] [stdout]   15:     0x55e5ea57ca23 - core::result::unwrap_failed::h6bc7b183ec719494
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/result.rs:1785:5
[INFO] [stdout]   16:     0x55e5ea586d92 - core::result::Result<T,E>::unwrap::h51b0ea68ad9df6e2
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/result.rs:1078:23
[INFO] [stdout]   17:     0x55e5ea588c5c - rustlings::exercise::test::test_exercise_with_output::h9893478626ef8c13
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:323:19
[INFO] [stdout]   18:     0x55e5ea588aea - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hdedd71a98675a135
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:316:5
[INFO] [stdout]   19:     0x55e5ea585d6e - core::ops::function::FnOnce::call_once::hc51c4a4de442bb82
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x55e5ea5c1313 - core::ops::function::FnOnce::call_once::h018fc248431ce8de
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x55e5ea5c1313 - test::__rust_begin_short_backtrace::h293b982b6069d6e3
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:574:5
[INFO] [stdout]   22:     0x55e5ea5c00c9 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h4fc1be1a762c7a46
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/alloc/src/boxed.rs:1861:9
[INFO] [stdout]   23:     0x55e5ea5c00c9 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd44623ec51b9e897
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   24:     0x55e5ea5c00c9 - std::panicking::try::do_call::ha8cfa4b025f5b832
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:492:40
[INFO] [stdout]   25:     0x55e5ea5c00c9 - std::panicking::try::h664f75e41c112145
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:456:19
[INFO] [stdout]   26:     0x55e5ea5c00c9 - std::panic::catch_unwind::h4932ec05cd60558e
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panic.rs:137:14
[INFO] [stdout]   27:     0x55e5ea5c00c9 - test::run_test_in_process::ha14a47756671755c
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:597:18
[INFO] [stdout]   28:     0x55e5ea5c00c9 - test::run_test::run_test_inner::{{closure}}::h0ec9e37c8f67b62d
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:491:39
[INFO] [stdout]   29:     0x55e5ea58c27e - test::run_test::run_test_inner::{{closure}}::hd9d2e7f26d4f59e6
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/test/src/lib.rs:518:37
[INFO] [stdout]   30:     0x55e5ea58c27e - std::sys_common::backtrace::__rust_begin_short_backtrace::h41c0a39fac5123f8
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stdout]   31:     0x55e5ea5917e8 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h69a02ca0bebb6eeb
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/thread/mod.rs:498:17
[INFO] [stdout]   32:     0x55e5ea5917e8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hdd05632920ce689b
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   33:     0x55e5ea5917e8 - std::panicking::try::do_call::hb4947142729b90fd
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:492:40
[INFO] [stdout]   34:     0x55e5ea5917e8 - std::panicking::try::h15a7e9b8394e6878
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panicking.rs:456:19
[INFO] [stdout]   35:     0x55e5ea5917e8 - std::panic::catch_unwind::hbd3f4a3f9df49b85
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/panic.rs:137:14
[INFO] [stdout]   36:     0x55e5ea5917e8 - std::thread::Builder::spawn_unchecked_::{{closure}}::h880b5d5f1b9799f4
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/thread/mod.rs:497:30
[INFO] [stdout]   37:     0x55e5ea5917e8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h304d5eaf401f5061
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x55e5ea759db3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hdba7f2afed0c35b3
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/alloc/src/boxed.rs:1861:9
[INFO] [stdout]   39:     0x55e5ea759db3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h38b0832765bf7961
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/alloc/src/boxed.rs:1861:9
[INFO] [stdout]   40:     0x55e5ea759db3 - std::sys::unix::thread::Thread::new::thread_start::h70236dc17753425e
[INFO] [stdout]                                at /rustc/7c13df853721b60a03e7c0bb084d2eb1e27a9caa/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   41:     0x7ffbc7df8609 - start_thread
[INFO] [stdout]   42:     0x7ffbc7f4d163 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     exercise::test::test_clean
[INFO] [stdout]     exercise::test::test_exercise_with_output
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--bin rustlings'
[INFO] running `Command { std: "docker" "inspect" "e9a9731d6c9b21574ba097c61aef878d7291fead511f138bd0a70501b0bb9f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a9731d6c9b21574ba097c61aef878d7291fead511f138bd0a70501b0bb9f73", kill_on_drop: false }`
[INFO] [stdout] e9a9731d6c9b21574ba097c61aef878d7291fead511f138bd0a70501b0bb9f73