[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-gcMs1
[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-gcMs1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-gcMs1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-gcMs1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c35d5f56677abc9226593829b2f4ac56b29caf1d
[INFO] testing LearningOS/rust-rustlings-gcMs1/c35d5f56677abc9226593829b2f4ac56b29caf1d against try#024495a232636f1f9407d7695b2be51edc2c51bd for pr-130285
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-gcMs1" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-gcMs1 on toolchain 024495a232636f1f9407d7695b2be51edc2c51bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-gcMs1
[INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-gcMs1
[INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-gcMs1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LearningOS/rust-rustlings-gcMs1 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" "+024495a232636f1f9407d7695b2be51edc2c51bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bff67c2f8b909fdca8c139bc8cb4fba4f26414e248197e527e3b310c5a95114e
[INFO] running `Command { std: "docker" "start" "-a" "bff67c2f8b909fdca8c139bc8cb4fba4f26414e248197e527e3b310c5a95114e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bff67c2f8b909fdca8c139bc8cb4fba4f26414e248197e527e3b310c5a95114e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bff67c2f8b909fdca8c139bc8cb4fba4f26414e248197e527e3b310c5a95114e", kill_on_drop: false }`
[INFO] [stdout] bff67c2f8b909fdca8c139bc8cb4fba4f26414e248197e527e3b310c5a95114e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0faeb293ae77eceddce5e386c10ab3efac78e57af13f361da12c57462d7843c6
[INFO] running `Command { std: "docker" "start" "-a" "0faeb293ae77eceddce5e386c10ab3efac78e57af13f361da12c57462d7843c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "0faeb293ae77eceddce5e386c10ab3efac78e57af13f361da12c57462d7843c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0faeb293ae77eceddce5e386c10ab3efac78e57af13f361da12c57462d7843c6", kill_on_drop: false }`
[INFO] [stdout] 0faeb293ae77eceddce5e386c10ab3efac78e57af13f361da12c57462d7843c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] faa9012f658468453b524e09e54153604b76639ee081ea8d4a8db0145c1d929b
[INFO] running `Command { std: "docker" "start" "-a" "faa9012f658468453b524e09e54153604b76639ee081ea8d4a8db0145c1d929b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "faa9012f658468453b524e09e54153604b76639ee081ea8d4a8db0145c1d929b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faa9012f658468453b524e09e54153604b76639ee081ea8d4a8db0145c1d929b", kill_on_drop: false }`
[INFO] [stdout] faa9012f658468453b524e09e54153604b76639ee081ea8d4a8db0145c1d929b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ab71a5774128fbac88a0ab67f87424f06546d74156c134b8d1fdfb3f8f317321
[INFO] running `Command { std: "docker" "start" "-a" "ab71a5774128fbac88a0ab67f87424f06546d74156c134b8d1fdfb3f8f317321", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-0da0eebcf6579f30)
[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 src/exercise.rs:269:36:
[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:     0x5be685667e1a - std::backtrace_rs::backtrace::libunwind::trace::h0b70b9423e9d16d3
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5be685667e1a - std::backtrace_rs::backtrace::trace_unsynchronized::h41a6d6747b7a8eec
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5be685667e1a - std::sys::backtrace::_print_fmt::hc7c5a78d80682aba
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5be685667e1a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hd4fdfca2994da546
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5be68568e9db - core::fmt::rt::Argument::fmt::hf99fefc5c46831d6
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5be68568e9db - core::fmt::write::h98fc8fc0872eb800
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/fmt/mod.rs:1178:21
[INFO] [stdout]    6:     0x5be685664913 - std::io::Write::write_fmt::h6f2e89dc4ecb15bf
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/io/mod.rs:1823:15
[INFO] [stdout]    7:     0x5be685667c62 - std::sys::backtrace::BacktraceLock::print::h8d5848a17a7460af
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5be685669595 - std::panicking::default_hook::{{closure}}::hc1055ce5a16caaaf
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5be685669388 - std::panicking::default_hook::h18285eee104702ef
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x5be6854fc4f9 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hfb424389a6080334
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2243:9
[INFO] [stdout]   11:     0x5be6854fc4f9 - test::test_main::{{closure}}::h4a11467e31076c86
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:132:21
[INFO] [stdout]   12:     0x5be685669ca8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::heeb27b65ef50abbb
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2243:9
[INFO] [stdout]   13:     0x5be685669ca8 - std::panicking::rust_panic_with_hook::h6b7d3dd5857887cd
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x5be685669a77 - std::panicking::begin_panic_handler::{{closure}}::he5e8e895688cd622
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:674:13
[INFO] [stdout]   15:     0x5be6856682f9 - std::sys::backtrace::__rust_end_short_backtrace::h7ac5700345d0de4e
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x5be685669704 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x5be68568d3a3 - core::panicking::panic_fmt::h685c6841386827a1
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x5be68568d826 - core::result::unwrap_failed::ha216cdc5e677ea84
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/result.rs:1689:5
[INFO] [stdout]   19:     0x5be6854bae3a - core::result::Result<T,E>::unwrap::h4c95aff5d8ffc57e
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/result.rs:1102:23
[INFO] [stdout]   20:     0x5be6854bae3a - rustlings::exercise::test::test_clean::haf5cbbf61c18cbf9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:269:9
[INFO] [stdout]   21:     0x5be6854bad77 - rustlings::exercise::test::test_clean::{{closure}}::he06b7c472b5605f9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:268:20
[INFO] [stdout]   22:     0x5be6854b80e6 - core::ops::function::FnOnce::call_once::h7150915c7583230c
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5be685500e6b - core::ops::function::FnOnce::call_once::hfb2803ce7bc0c431
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5be685500e6b - test::__rust_begin_short_backtrace::h6fe405d067d4edf1
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:620:18
[INFO] [stdout]   25:     0x5be6855006e8 - test::run_test_in_process::{{closure}}::h3031d20e0ab28154
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:643:60
[INFO] [stdout]   26:     0x5be6855006e8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40629b6e43a85677
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5be6855006e8 - std::panicking::try::do_call::h08ed2f92617b0647
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:557:40
[INFO] [stdout]   28:     0x5be6855006e8 - std::panicking::try::h54f860637680ac50
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:520:19
[INFO] [stdout]   29:     0x5be6855006e8 - std::panic::catch_unwind::ha8daaf3a1c05af1f
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panic.rs:345:14
[INFO] [stdout]   30:     0x5be6855006e8 - test::run_test_in_process::h22aa530a672126a5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:643:27
[INFO] [stdout]   31:     0x5be6855006e8 - test::run_test::{{closure}}::h519bf3f40870ddb4
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:564:43
[INFO] [stdout]   32:     0x5be6854c49e4 - test::run_test::{{closure}}::h9609024f0d351f83
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:594:41
[INFO] [stdout]   33:     0x5be6854c49e4 - std::sys::backtrace::__rust_begin_short_backtrace::hbf2cc61ff203adf2
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x5be6854c8092 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h370d502b279abcf5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/thread/mod.rs:522:17
[INFO] [stdout]   35:     0x5be6854c8092 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h2959a1c77493a6d5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5be6854c8092 - std::panicking::try::do_call::hbc9357b5a89852bf
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:557:40
[INFO] [stdout]   37:     0x5be6854c8092 - std::panicking::try::h7e1573ffa8a7d0e5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:520:19
[INFO] [stdout]   38:     0x5be6854c8092 - std::panic::catch_unwind::h570f5a4451fc728e
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panic.rs:345:14
[INFO] [stdout]   39:     0x5be6854c8092 - std::thread::Builder::spawn_unchecked_::{{closure}}::hfe446f1f520b4b7b
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/thread/mod.rs:521:30
[INFO] [stdout]   40:     0x5be6854c8092 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hac66e3d930a4cb63
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5be68566de8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h454061bce884428d
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2229:9
[INFO] [stdout]   42:     0x5be68566de8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h93b1743250f897c2
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2229:9
[INFO] [stdout]   43:     0x5be68566de8b - std::sys::pal::unix::thread::Thread::new::thread_start::hb6bf89038caa002c
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x7a100d1b1ac3 - <unknown>
[INFO] [stdout]   45:     0x7a100d242a04 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ----
[INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at src/exercise.rs:342:38:
[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/./rmetakHzwig\"\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:     0x5be685667e1a - std::backtrace_rs::backtrace::libunwind::trace::h0b70b9423e9d16d3
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x5be685667e1a - std::backtrace_rs::backtrace::trace_unsynchronized::h41a6d6747b7a8eec
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5be685667e1a - std::sys::backtrace::_print_fmt::hc7c5a78d80682aba
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5be685667e1a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hd4fdfca2994da546
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5be68568e9db - core::fmt::rt::Argument::fmt::hf99fefc5c46831d6
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5be68568e9db - core::fmt::write::h98fc8fc0872eb800
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/fmt/mod.rs:1178:21
[INFO] [stdout]    6:     0x5be685664913 - std::io::Write::write_fmt::h6f2e89dc4ecb15bf
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/io/mod.rs:1823:15
[INFO] [stdout]    7:     0x5be685667c62 - std::sys::backtrace::BacktraceLock::print::h8d5848a17a7460af
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5be685669595 - std::panicking::default_hook::{{closure}}::hc1055ce5a16caaaf
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x5be685669388 - std::panicking::default_hook::h18285eee104702ef
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x5be6854fc4f9 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hfb424389a6080334
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2243:9
[INFO] [stdout]   11:     0x5be6854fc4f9 - test::test_main::{{closure}}::h4a11467e31076c86
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:132:21
[INFO] [stdout]   12:     0x5be685669ca8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::heeb27b65ef50abbb
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2243:9
[INFO] [stdout]   13:     0x5be685669ca8 - std::panicking::rust_panic_with_hook::h6b7d3dd5857887cd
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x5be685669a77 - std::panicking::begin_panic_handler::{{closure}}::he5e8e895688cd622
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:674:13
[INFO] [stdout]   15:     0x5be6856682f9 - std::sys::backtrace::__rust_end_short_backtrace::h7ac5700345d0de4e
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x5be685669704 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x5be68568d3a3 - core::panicking::panic_fmt::h685c6841386827a1
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x5be68568d826 - core::result::unwrap_failed::ha216cdc5e677ea84
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/result.rs:1689:5
[INFO] [stdout]   19:     0x5be6854bbc9a - core::result::Result<T,E>::unwrap::hd67267790c22bfc3
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/result.rs:1102:23
[INFO] [stdout]   20:     0x5be6854bbc9a - rustlings::exercise::test::test_exercise_with_output::hb8ed00069a16d3aa
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:342:19
[INFO] [stdout]   21:     0x5be6854bbaa7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h88ef3b78992f8e08
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:335:35
[INFO] [stdout]   22:     0x5be6854b80a6 - core::ops::function::FnOnce::call_once::h1df86bc2951623c7
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5be685500e6b - core::ops::function::FnOnce::call_once::hfb2803ce7bc0c431
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5be685500e6b - test::__rust_begin_short_backtrace::h6fe405d067d4edf1
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:620:18
[INFO] [stdout]   25:     0x5be6855006e8 - test::run_test_in_process::{{closure}}::h3031d20e0ab28154
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:643:60
[INFO] [stdout]   26:     0x5be6855006e8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40629b6e43a85677
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5be6855006e8 - std::panicking::try::do_call::h08ed2f92617b0647
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:557:40
[INFO] [stdout]   28:     0x5be6855006e8 - std::panicking::try::h54f860637680ac50
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:520:19
[INFO] [stdout]   29:     0x5be6855006e8 - std::panic::catch_unwind::ha8daaf3a1c05af1f
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panic.rs:345:14
[INFO] [stdout]   30:     0x5be6855006e8 - test::run_test_in_process::h22aa530a672126a5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:643:27
[INFO] [stdout]   31:     0x5be6855006e8 - test::run_test::{{closure}}::h519bf3f40870ddb4
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:564:43
[INFO] [stdout]   32:     0x5be6854c49e4 - test::run_test::{{closure}}::h9609024f0d351f83
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/test/src/lib.rs:594:41
[INFO] [stdout]   33:     0x5be6854c49e4 - std::sys::backtrace::__rust_begin_short_backtrace::hbf2cc61ff203adf2
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x5be6854c8092 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h370d502b279abcf5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/thread/mod.rs:522:17
[INFO] [stdout]   35:     0x5be6854c8092 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h2959a1c77493a6d5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5be6854c8092 - std::panicking::try::do_call::hbc9357b5a89852bf
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:557:40
[INFO] [stdout]   37:     0x5be6854c8092 - std::panicking::try::h7e1573ffa8a7d0e5
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panicking.rs:520:19
[INFO] [stdout]   38:     0x5be6854c8092 - std::panic::catch_unwind::h570f5a4451fc728e
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/panic.rs:345:14
[INFO] [stdout]   39:     0x5be6854c8092 - std::thread::Builder::spawn_unchecked_::{{closure}}::hfe446f1f520b4b7b
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/thread/mod.rs:521:30
[INFO] [stdout]   40:     0x5be6854c8092 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hac66e3d930a4cb63
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5be68566de8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h454061bce884428d
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2229:9
[INFO] [stdout]   42:     0x5be68566de8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h93b1743250f897c2
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/alloc/src/boxed.rs:2229:9
[INFO] [stdout]   43:     0x5be68566de8b - std::sys::pal::unix::thread::Thread::new::thread_start::hb6bf89038caa002c
[INFO] [stdout]                                at /rustc/024495a232636f1f9407d7695b2be51edc2c51bd/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x7a100d1b1ac3 - <unknown>
[INFO] [stdout]   45:     0x7a100d242a04 - 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 0.06s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "ab71a5774128fbac88a0ab67f87424f06546d74156c134b8d1fdfb3f8f317321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab71a5774128fbac88a0ab67f87424f06546d74156c134b8d1fdfb3f8f317321", kill_on_drop: false }`
[INFO] [stdout] ab71a5774128fbac88a0ab67f87424f06546d74156c134b8d1fdfb3f8f317321