[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-2024-spring-sneakicat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-2024-spring-sneakicat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-sneakicat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-sneakicat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a9eb3402c2408ff3f7a354b0fe6da4003bfabee
[INFO] testing LearningOS/rust-rustlings-2024-spring-sneakicat/2a9eb3402c2408ff3f7a354b0fe6da4003bfabee against master#552a959051cebf8f88a8f558399baf733bec9ce0 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-sneakicat" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-2024-spring-sneakicat on toolchain 552a959051cebf8f88a8f558399baf733bec9ce0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-2024-spring-sneakicat
[INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2024-spring-sneakicat
[INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2024-spring-sneakicat written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2024-spring-sneakicat 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" "+552a959051cebf8f88a8f558399baf733bec9ce0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff4ff945db37300deb06acf2d886c50ae0c8545fcc8f2602e1c16257495a658c
[INFO] running `Command { std: "docker" "start" "-a" "ff4ff945db37300deb06acf2d886c50ae0c8545fcc8f2602e1c16257495a658c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff4ff945db37300deb06acf2d886c50ae0c8545fcc8f2602e1c16257495a658c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff4ff945db37300deb06acf2d886c50ae0c8545fcc8f2602e1c16257495a658c", kill_on_drop: false }`
[INFO] [stdout] ff4ff945db37300deb06acf2d886c50ae0c8545fcc8f2602e1c16257495a658c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f3fa96ca1358b9247e5e7e7ec9930dabbbbb47533c34019e3b6562ce4145989
[INFO] running `Command { std: "docker" "start" "-a" "0f3fa96ca1358b9247e5e7e7ec9930dabbbbb47533c34019e3b6562ce4145989", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.99s
[INFO] running `Command { std: "docker" "inspect" "0f3fa96ca1358b9247e5e7e7ec9930dabbbbb47533c34019e3b6562ce4145989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f3fa96ca1358b9247e5e7e7ec9930dabbbbb47533c34019e3b6562ce4145989", kill_on_drop: false }`
[INFO] [stdout] 0f3fa96ca1358b9247e5e7e7ec9930dabbbbb47533c34019e3b6562ce4145989
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 356c1eef8cd4fffbcb12c622f780283943cfd0fe3fea35329de7d645c69293eb
[INFO] running `Command { std: "docker" "start" "-a" "356c1eef8cd4fffbcb12c622f780283943cfd0fe3fea35329de7d645c69293eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `Command { std: "docker" "inspect" "356c1eef8cd4fffbcb12c622f780283943cfd0fe3fea35329de7d645c69293eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "356c1eef8cd4fffbcb12c622f780283943cfd0fe3fea35329de7d645c69293eb", kill_on_drop: false }`
[INFO] [stdout] 356c1eef8cd4fffbcb12c622f780283943cfd0fe3fea35329de7d645c69293eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 96eb22d1fc5386a541a201af37386bfdb9a60ccdd2efc32157b8c9489ab2ed32
[INFO] running `Command { std: "docker" "start" "-a" "96eb22d1fc5386a541a201af37386bfdb9a60ccdd2efc32157b8c9489ab2ed32", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-7747afdab9b9b976)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test exercise::test::test_pending_state ... ok
[INFO] [stdout] test exercise::test::test_finished_exercise ... 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] 
[INFO] [stdout] thread 'exercise::test::test_clean' panicked at src/exercise.rs:303:36:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5f53ee012ed0 - std::backtrace_rs::backtrace::libunwind::trace::hff7ffeb2055d56f7
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5f53ee012ed0 - std::backtrace_rs::backtrace::trace_unsynchronized::he7b3446d48853094
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5f53ee012ed0 - std::sys::backtrace::_print_fmt::hc2f9f78a9d81f67e
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5f53ee012ed0 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h222ded249a1f0b37
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5f53ee03b5c3 - core::fmt::rt::Argument::fmt::hf87ad28cd961f7a3
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5f53ee03b5c3 - core::fmt::write::h9275005cf35b8a10
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/fmt/mod.rs:1449:21
[INFO] [stdout]    6:     0x5f53ee00f843 - std::io::Write::write_fmt::h9c45a7064b117632
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/io/mod.rs:1890:15
[INFO] [stdout]    7:     0x5f53ee012d22 - std::sys::backtrace::BacktraceLock::print::hd225c6688b44ae93
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5f53ee0142ff - std::panicking::default_hook::{{closure}}::h2b0bdfbf5b027ac9
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:298:22
[INFO] [stdout]    9:     0x5f53ee014118 - std::panicking::default_hook::ha8790851fc656c1a
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:322:9
[INFO] [stdout]   10:     0x5f53eddc9d65 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdad4d0506655a157
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   11:     0x5f53eddc9d65 - test::test_main::{{closure}}::hdf61abd52acd3de0
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:135:21
[INFO] [stdout]   12:     0x5f53ee014df3 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h52c5bf698b1366e5
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   13:     0x5f53ee014df3 - std::panicking::rust_panic_with_hook::ha306bc05bdb5b696
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:839:13
[INFO] [stdout]   14:     0x5f53ee014aaa - std::panicking::begin_panic_handler::{{closure}}::h2c0d6e717a62810c
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:704:13
[INFO] [stdout]   15:     0x5f53ee0133d9 - std::sys::backtrace::__rust_end_short_backtrace::h1e7465e8c528d13d
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   16:     0x5f53ee01473d - rust_begin_unwind
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:695:5
[INFO] [stdout]   17:     0x5f53ee039c20 - core::panicking::panic_fmt::h0c17c793f18e9c3f
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/panicking.rs:75:14
[INFO] [stdout]   18:     0x5f53ee03a0c6 - core::result::unwrap_failed::hb71c1a118c26f2bc
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/result.rs:1704:5
[INFO] [stdout]   19:     0x5f53edd8676a - core::result::Result<T,E>::unwrap::h131d6e93552cd840
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/result.rs:1109:23
[INFO] [stdout]   20:     0x5f53edd8676a - rustlings::exercise::test::test_clean::h38fb2ccbce8d4996
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:303:9
[INFO] [stdout]   21:     0x5f53edd866a7 - rustlings::exercise::test::test_clean::{{closure}}::h1efc236ff2133fda
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:302:20
[INFO] [stdout]   22:     0x5f53edd84216 - core::ops::function::FnOnce::call_once::h8487947465b2327d
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5f53eddcf55b - core::ops::function::FnOnce::call_once::ha8d13c24f305262f
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5f53eddcf55b - test::__rust_begin_short_backtrace::hda7ed5913d26b4c3
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:637:18
[INFO] [stdout]   25:     0x5f53eddce3d8 - test::run_test_in_process::{{closure}}::h98799ac8ad05dc17
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:660:60
[INFO] [stdout]   26:     0x5f53eddce3d8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9915be725ed5cec7
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5f53eddce3d8 - std::panicking::try::do_call::hdae5166dc0f6479b
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:587:40
[INFO] [stdout]   28:     0x5f53eddce3d8 - std::panicking::try::h8fa0f35111734e43
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:550:19
[INFO] [stdout]   29:     0x5f53eddce3d8 - std::panic::catch_unwind::h2c5c178909d676e7
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x5f53eddce3d8 - test::run_test_in_process::h2157e57f25733f22
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:660:27
[INFO] [stdout]   31:     0x5f53eddce3d8 - test::run_test::{{closure}}::h22055a3e9dc56ab9
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:581:43
[INFO] [stdout]   32:     0x5f53edd91395 - test::run_test::{{closure}}::h0de666e52c64b314
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:611:41
[INFO] [stdout]   33:     0x5f53edd91395 - std::sys::backtrace::__rust_begin_short_backtrace::hc24dfc6dbc7f5867
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   34:     0x5f53edd94d1a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h036a075b14c8a889
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5f53edd94d1a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h77e5e1e1c11b3182
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5f53edd94d1a - std::panicking::try::do_call::h64009ce4a7d5024a
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:587:40
[INFO] [stdout]   37:     0x5f53edd94d1a - std::panicking::try::h9f253851f45b6cf2
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:550:19
[INFO] [stdout]   38:     0x5f53edd94d1a - std::panic::catch_unwind::hbcdf318df191e0d2
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panic.rs:358:14
[INFO] [stdout]   39:     0x5f53edd94d1a - std::thread::Builder::spawn_unchecked_::{{closure}}::h1b0514eb1722a9bb
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5f53edd94d1a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h49ed8239622cf2ed
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5f53ee018e2b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5d46408001e51da6
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   42:     0x5f53ee018e2b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfb44b07af29285a8
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   43:     0x5f53ee018e2b - std::sys::pal::unix::thread::Thread::new::thread_start::h3fe202b40d9df201
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/pal/unix/thread.rs:106:17
[INFO] [stdout]   44:     0x7fe5a9727ac3 - <unknown>
[INFO] [stdout]   45:     0x7fe5a97b8a04 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at src/exercise.rs:376:38:
[INFO] [stdout] 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: couldn't create a temp dir: Read-only file system (os error 30) at path \"/opt/rustwide/workdir/./rmetaA66BWX\"\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 1 previous error\u{1b}[0m\n\n" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5f53ee012ed0 - std::backtrace_rs::backtrace::libunwind::trace::hff7ffeb2055d56f7
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5f53ee012ed0 - std::backtrace_rs::backtrace::trace_unsynchronized::he7b3446d48853094
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5f53ee012ed0 - std::sys::backtrace::_print_fmt::hc2f9f78a9d81f67e
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5f53ee012ed0 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h222ded249a1f0b37
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5f53ee03b5c3 - core::fmt::rt::Argument::fmt::hf87ad28cd961f7a3
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5f53ee03b5c3 - core::fmt::write::h9275005cf35b8a10
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/fmt/mod.rs:1449:21
[INFO] [stdout]    6:     0x5f53ee00f843 - std::io::Write::write_fmt::h9c45a7064b117632
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/io/mod.rs:1890:15
[INFO] [stdout]    7:     0x5f53ee012d22 - std::sys::backtrace::BacktraceLock::print::hd225c6688b44ae93
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5f53ee0142ff - std::panicking::default_hook::{{closure}}::h2b0bdfbf5b027ac9
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:298:22
[INFO] [stdout]    9:     0x5f53ee014118 - std::panicking::default_hook::ha8790851fc656c1a
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:322:9
[INFO] [stdout]   10:     0x5f53eddc9d65 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdad4d0506655a157
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   11:     0x5f53eddc9d65 - test::test_main::{{closure}}::hdf61abd52acd3de0
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:135:21
[INFO] [stdout]   12:     0x5f53ee014df3 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h52c5bf698b1366e5
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   13:     0x5f53ee014df3 - std::panicking::rust_panic_with_hook::ha306bc05bdb5b696
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:839:13
[INFO] [stdout]   14:     0x5f53ee014aaa - std::panicking::begin_panic_handler::{{closure}}::h2c0d6e717a62810c
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:704:13
[INFO] [stdout]   15:     0x5f53ee0133d9 - std::sys::backtrace::__rust_end_short_backtrace::h1e7465e8c528d13d
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   16:     0x5f53ee01473d - rust_begin_unwind
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:695:5
[INFO] [stdout]   17:     0x5f53ee039c20 - core::panicking::panic_fmt::h0c17c793f18e9c3f
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/panicking.rs:75:14
[INFO] [stdout]   18:     0x5f53ee03a0c6 - core::result::unwrap_failed::hb71c1a118c26f2bc
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/result.rs:1704:5
[INFO] [stdout]   19:     0x5f53edd8760a - core::result::Result<T,E>::unwrap::ha828b67a775e8f1f
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/result.rs:1109:23
[INFO] [stdout]   20:     0x5f53edd8760a - rustlings::exercise::test::test_exercise_with_output::h9310e6a95fa259dd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:376:19
[INFO] [stdout]   21:     0x5f53edd87417 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h9757a71a8dc744da
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:369:35
[INFO] [stdout]   22:     0x5f53edd842e6 - core::ops::function::FnOnce::call_once::hf217c51b3767f5e8
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5f53eddcf55b - core::ops::function::FnOnce::call_once::ha8d13c24f305262f
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5f53eddcf55b - test::__rust_begin_short_backtrace::hda7ed5913d26b4c3
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:637:18
[INFO] [stdout]   25:     0x5f53eddce3d8 - test::run_test_in_process::{{closure}}::h98799ac8ad05dc17
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:660:60
[INFO] [stdout]   26:     0x5f53eddce3d8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9915be725ed5cec7
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5f53eddce3d8 - std::panicking::try::do_call::hdae5166dc0f6479b
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:587:40
[INFO] [stdout]   28:     0x5f53eddce3d8 - std::panicking::try::h8fa0f35111734e43
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:550:19
[INFO] [stdout]   29:     0x5f53eddce3d8 - std::panic::catch_unwind::h2c5c178909d676e7
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x5f53eddce3d8 - test::run_test_in_process::h2157e57f25733f22
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:660:27
[INFO] [stdout]   31:     0x5f53eddce3d8 - test::run_test::{{closure}}::h22055a3e9dc56ab9
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:581:43
[INFO] [stdout]   32:     0x5f53edd91395 - test::run_test::{{closure}}::h0de666e52c64b314
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/test/src/lib.rs:611:41
[INFO] [stdout]   33:     0x5f53edd91395 - std::sys::backtrace::__rust_begin_short_backtrace::hc24dfc6dbc7f5867
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   34:     0x5f53edd94d1a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h036a075b14c8a889
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5f53edd94d1a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h77e5e1e1c11b3182
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5f53edd94d1a - std::panicking::try::do_call::h64009ce4a7d5024a
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:587:40
[INFO] [stdout]   37:     0x5f53edd94d1a - std::panicking::try::h9f253851f45b6cf2
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panicking.rs:550:19
[INFO] [stdout]   38:     0x5f53edd94d1a - std::panic::catch_unwind::hbcdf318df191e0d2
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/panic.rs:358:14
[INFO] [stdout]   39:     0x5f53edd94d1a - std::thread::Builder::spawn_unchecked_::{{closure}}::h1b0514eb1722a9bb
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5f53edd94d1a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h49ed8239622cf2ed
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5f53ee018e2b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5d46408001e51da6
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   42:     0x5f53ee018e2b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfb44b07af29285a8
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   43:     0x5f53ee018e2b - std::sys::pal::unix::thread::Thread::new::thread_start::h3fe202b40d9df201
[INFO] [stdout]                                at /rustc/552a959051cebf8f88a8f558399baf733bec9ce0/library/std/src/sys/pal/unix/thread.rs:106:17
[INFO] [stdout]   44:     0x7fe5a9727ac3 - <unknown>
[INFO] [stdout]   45:     0x7fe5a97b8a04 - clone
[INFO] [stdout]   46:                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" "96eb22d1fc5386a541a201af37386bfdb9a60ccdd2efc32157b8c9489ab2ed32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96eb22d1fc5386a541a201af37386bfdb9a60ccdd2efc32157b8c9489ab2ed32", kill_on_drop: false }`
[INFO] [stdout] 96eb22d1fc5386a541a201af37386bfdb9a60ccdd2efc32157b8c9489ab2ed32