[INFO] cloning repository https://github.com/dheerajbhaskar/learn-rust-rustlings-PUBLIC
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[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdheerajbhaskar%2Flearn-rust-rustlings-PUBLIC'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3d38c643fc178f05a847e7cb8016a784b0a54ac
[INFO] testing dheerajbhaskar/learn-rust-rustlings-PUBLIC/a3d38c643fc178f05a847e7cb8016a784b0a54ac against 1.82.0 for beta-1.83-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdheerajbhaskar%2Flearn-rust-rustlings-PUBLIC" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dheerajbhaskar/learn-rust-rustlings-PUBLIC on toolchain 1.82.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.82.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dheerajbhaskar/learn-rust-rustlings-PUBLIC
[INFO] finished tweaking git repo https://github.com/dheerajbhaskar/learn-rust-rustlings-PUBLIC
[INFO] tweaked toml for git repo https://github.com/dheerajbhaskar/learn-rust-rustlings-PUBLIC written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dheerajbhaskar/learn-rust-rustlings-PUBLIC 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" "+1.82.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce6f05b58e681de03809c92930e98d396d8b394e46eeb8943ea13eac0163bbb4
[INFO] running `Command { std: "docker" "start" "-a" "ce6f05b58e681de03809c92930e98d396d8b394e46eeb8943ea13eac0163bbb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce6f05b58e681de03809c92930e98d396d8b394e46eeb8943ea13eac0163bbb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce6f05b58e681de03809c92930e98d396d8b394e46eeb8943ea13eac0163bbb4", kill_on_drop: false }`
[INFO] [stdout] ce6f05b58e681de03809c92930e98d396d8b394e46eeb8943ea13eac0163bbb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30a824c3ff8e38b3302dfe27c1f64842ebdd44856893f2ad72672904396308c3
[INFO] running `Command { std: "docker" "start" "-a" "30a824c3ff8e38b3302dfe27c1f64842ebdd44856893f2ad72672904396308c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
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[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.40s
[INFO] running `Command { std: "docker" "inspect" "30a824c3ff8e38b3302dfe27c1f64842ebdd44856893f2ad72672904396308c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a824c3ff8e38b3302dfe27c1f64842ebdd44856893f2ad72672904396308c3", kill_on_drop: false }`
[INFO] [stdout] 30a824c3ff8e38b3302dfe27c1f64842ebdd44856893f2ad72672904396308c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 739581e6ea5b6eb817f29895170a18062ba5ced9ab7ab15f05cc544af212eb6f
[INFO] running `Command { std: "docker" "start" "-a" "739581e6ea5b6eb817f29895170a18062ba5ced9ab7ab15f05cc544af212eb6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
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[INFO] [stderr]    Compiling predicates-core v1.0.2
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[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling assert_cmd v0.11.1
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.93s
[INFO] running `Command { std: "docker" "inspect" "739581e6ea5b6eb817f29895170a18062ba5ced9ab7ab15f05cc544af212eb6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "739581e6ea5b6eb817f29895170a18062ba5ced9ab7ab15f05cc544af212eb6f", kill_on_drop: false }`
[INFO] [stdout] 739581e6ea5b6eb817f29895170a18062ba5ced9ab7ab15f05cc544af212eb6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+1.82.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 76c78c45ea6f01e4e0610842984311c9e3477dfb3cffee5d8e1758c817416844
[INFO] running `Command { std: "docker" "start" "-a" "76c78c45ea6f01e4e0610842984311c9e3477dfb3cffee5d8e1758c817416844", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-14f00aaac89a1f38)
[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:     0x56acbfb4153a - std::backtrace_rs::backtrace::libunwind::trace::h99efb0985cae5d78
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x56acbfb4153a - std::backtrace_rs::backtrace::trace_unsynchronized::he2c1aa63b3f7fad8
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x56acbfb4153a - std::sys::backtrace::_print_fmt::h8a221d40f5e0f88b
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x56acbfb4153a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h304520fd6a30aa07
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x56acbfb674fb - core::fmt::rt::Argument::fmt::h5da9c218ec984eaf
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x56acbfb674fb - core::fmt::write::hf5713710ce10ff22
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/fmt/mod.rs:1178:21
[INFO] [stdout]    6:     0x56acbfb3e753 - std::io::Write::write_fmt::h786683024e26df0d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/io/mod.rs:1823:15
[INFO] [stdout]    7:     0x56acbfb42d42 - std::sys::backtrace::BacktraceLock::print::hbcdbec4d97c91528
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x56acbfb42d42 - std::panicking::default_hook::{{closure}}::he1ad87607d0c11c5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:266:22
[INFO] [stdout]    9:     0x56acbfb42883 - std::panicking::default_hook::h81c8cd2e7c59ee33
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:290:9
[INFO] [stdout]   10:     0x56acbf9ceca9 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6ef31d9fe3b4da7d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2245:9
[INFO] [stdout]   11:     0x56acbf9ceca9 - test::test_main::{{closure}}::h97736fed204a235d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:132:21
[INFO] [stdout]   12:     0x56acbfb43602 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h375ef7f99b271d16
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2245:9
[INFO] [stdout]   13:     0x56acbfb43602 - std::panicking::rust_panic_with_hook::had2118629c312a4a
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:805:13
[INFO] [stdout]   14:     0x56acbfb432b7 - std::panicking::begin_panic_handler::{{closure}}::h7fa5985d111bafa2
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:671:13
[INFO] [stdout]   15:     0x56acbfb41a19 - std::sys::backtrace::__rust_end_short_backtrace::h704d151dbefa09c5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x56acbfb42f44 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:662:5
[INFO] [stdout]   17:     0x56acbf9831e3 - core::panicking::panic_fmt::h3eea515d05f7a35e
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x56acbf983736 - core::result::unwrap_failed::h7c8d8bbbcf45dc13
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/result.rs:1677:5
[INFO] [stdout]   19:     0x56acbf98d65a - core::result::Result<T,E>::unwrap::h3ff140ea371c1e8c
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/result.rs:1102:23
[INFO] [stdout]   20:     0x56acbf98d65a - rustlings::exercise::test::test_clean::h25e176691b3fefa9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:269:9
[INFO] [stdout]   21:     0x56acbf98d597 - rustlings::exercise::test::test_clean::{{closure}}::hdf340e39138b808f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:268:20
[INFO] [stdout]   22:     0x56acbf98a836 - core::ops::function::FnOnce::call_once::hd0521a2eaf1c7fbb
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x56acbf9d35ab - core::ops::function::FnOnce::call_once::h8cb4701a559728b6
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56acbf9d35ab - test::__rust_begin_short_backtrace::hbd02dbd41797127f
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:620:18
[INFO] [stdout]   25:     0x56acbf9d2e98 - test::run_test_in_process::{{closure}}::h9b9c40b959cf4b0a
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:60
[INFO] [stdout]   26:     0x56acbf9d2e98 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h80ca0f237bf0daa4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x56acbf9d2e98 - std::panicking::try::do_call::h74ee75d3e2d7ba36
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   28:     0x56acbf9d2e98 - std::panicking::try::h2ae7db1dc2a281fc
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   29:     0x56acbf9d2e98 - std::panic::catch_unwind::h25732d5472f1001d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   30:     0x56acbf9d2e98 - test::run_test_in_process::h1e17135aacb29db6
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:27
[INFO] [stdout]   31:     0x56acbf9d2e98 - test::run_test::{{closure}}::h65f9c94bff1a7861
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:564:43
[INFO] [stdout]   32:     0x56acbf998264 - test::run_test::{{closure}}::ha23ee43b6be2939d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:594:41
[INFO] [stdout]   33:     0x56acbf998264 - std::sys::backtrace::__rust_begin_short_backtrace::h160ed2f20abbd124
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x56acbf99b912 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h076d93a5dd61b367
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:522:17
[INFO] [stdout]   35:     0x56acbf99b912 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb7dffecae4d2a0df
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x56acbf99b912 - std::panicking::try::do_call::h425c243d1cd119a5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   37:     0x56acbf99b912 - std::panicking::try::h5ff57b1fa4d0634d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   38:     0x56acbf99b912 - std::panic::catch_unwind::h69dc0395c7d606c8
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   39:     0x56acbf99b912 - std::thread::Builder::spawn_unchecked_::{{closure}}::hd987ad26725d6b64
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:521:30
[INFO] [stdout]   40:     0x56acbf99b912 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h262984108de629b4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x56acbfb477eb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd6eefa32c9acf934
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   42:     0x56acbfb477eb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6bca3a1f077b8c81
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   43:     0x56acbfb477eb - std::sys::pal::unix::thread::Thread::new::thread_start::hcdbd1049068002f4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x77045785eac3 - <unknown>
[INFO] [stdout]   45:     0x7704578efa04 - 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/./rmetatzx6w3\"\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:     0x56acbfb4153a - std::backtrace_rs::backtrace::libunwind::trace::h99efb0985cae5d78
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x56acbfb4153a - std::backtrace_rs::backtrace::trace_unsynchronized::he2c1aa63b3f7fad8
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x56acbfb4153a - std::sys::backtrace::_print_fmt::h8a221d40f5e0f88b
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x56acbfb4153a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h304520fd6a30aa07
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x56acbfb674fb - core::fmt::rt::Argument::fmt::h5da9c218ec984eaf
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x56acbfb674fb - core::fmt::write::hf5713710ce10ff22
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/fmt/mod.rs:1178:21
[INFO] [stdout]    6:     0x56acbfb3e753 - std::io::Write::write_fmt::h786683024e26df0d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/io/mod.rs:1823:15
[INFO] [stdout]    7:     0x56acbfb42d42 - std::sys::backtrace::BacktraceLock::print::hbcdbec4d97c91528
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x56acbfb42d42 - std::panicking::default_hook::{{closure}}::he1ad87607d0c11c5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:266:22
[INFO] [stdout]    9:     0x56acbfb42883 - std::panicking::default_hook::h81c8cd2e7c59ee33
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:290:9
[INFO] [stdout]   10:     0x56acbf9ceca9 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6ef31d9fe3b4da7d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2245:9
[INFO] [stdout]   11:     0x56acbf9ceca9 - test::test_main::{{closure}}::h97736fed204a235d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:132:21
[INFO] [stdout]   12:     0x56acbfb43602 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h375ef7f99b271d16
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2245:9
[INFO] [stdout]   13:     0x56acbfb43602 - std::panicking::rust_panic_with_hook::had2118629c312a4a
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:805:13
[INFO] [stdout]   14:     0x56acbfb432b7 - std::panicking::begin_panic_handler::{{closure}}::h7fa5985d111bafa2
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:671:13
[INFO] [stdout]   15:     0x56acbfb41a19 - std::sys::backtrace::__rust_end_short_backtrace::h704d151dbefa09c5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x56acbfb42f44 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:662:5
[INFO] [stdout]   17:     0x56acbf9831e3 - core::panicking::panic_fmt::h3eea515d05f7a35e
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panicking.rs:74:14
[INFO] [stdout]   18:     0x56acbf983736 - core::result::unwrap_failed::h7c8d8bbbcf45dc13
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/result.rs:1677:5
[INFO] [stdout]   19:     0x56acbf98e4ba - core::result::Result<T,E>::unwrap::h5c54eaeee43f49f3
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/result.rs:1102:23
[INFO] [stdout]   20:     0x56acbf98e4ba - rustlings::exercise::test::test_exercise_with_output::hba5af935b2ad3f1d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:342:19
[INFO] [stdout]   21:     0x56acbf98e2c7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hbdd855aa79f5b9ed
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:335:35
[INFO] [stdout]   22:     0x56acbf98a766 - core::ops::function::FnOnce::call_once::h352f6439ceab4d69
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x56acbf9d35ab - core::ops::function::FnOnce::call_once::h8cb4701a559728b6
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56acbf9d35ab - test::__rust_begin_short_backtrace::hbd02dbd41797127f
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:620:18
[INFO] [stdout]   25:     0x56acbf9d2e98 - test::run_test_in_process::{{closure}}::h9b9c40b959cf4b0a
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:60
[INFO] [stdout]   26:     0x56acbf9d2e98 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h80ca0f237bf0daa4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x56acbf9d2e98 - std::panicking::try::do_call::h74ee75d3e2d7ba36
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   28:     0x56acbf9d2e98 - std::panicking::try::h2ae7db1dc2a281fc
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   29:     0x56acbf9d2e98 - std::panic::catch_unwind::h25732d5472f1001d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   30:     0x56acbf9d2e98 - test::run_test_in_process::h1e17135aacb29db6
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:643:27
[INFO] [stdout]   31:     0x56acbf9d2e98 - test::run_test::{{closure}}::h65f9c94bff1a7861
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:564:43
[INFO] [stdout]   32:     0x56acbf998264 - test::run_test::{{closure}}::ha23ee43b6be2939d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/test/src/lib.rs:594:41
[INFO] [stdout]   33:     0x56acbf998264 - std::sys::backtrace::__rust_begin_short_backtrace::h160ed2f20abbd124
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x56acbf99b912 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h076d93a5dd61b367
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:522:17
[INFO] [stdout]   35:     0x56acbf99b912 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb7dffecae4d2a0df
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x56acbf99b912 - std::panicking::try::do_call::h425c243d1cd119a5
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:554:40
[INFO] [stdout]   37:     0x56acbf99b912 - std::panicking::try::h5ff57b1fa4d0634d
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panicking.rs:518:19
[INFO] [stdout]   38:     0x56acbf99b912 - std::panic::catch_unwind::h69dc0395c7d606c8
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/panic.rs:345:14
[INFO] [stdout]   39:     0x56acbf99b912 - std::thread::Builder::spawn_unchecked_::{{closure}}::hd987ad26725d6b64
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/thread/mod.rs:521:30
[INFO] [stdout]   40:     0x56acbf99b912 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h262984108de629b4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x56acbfb477eb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd6eefa32c9acf934
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   42:     0x56acbfb477eb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6bca3a1f077b8c81
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/alloc/src/boxed.rs:2231:9
[INFO] [stdout]   43:     0x56acbfb477eb - std::sys::pal::unix::thread::Thread::new::thread_start::hcdbd1049068002f4
[INFO] [stdout]                                at /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x77045785eac3 - <unknown>
[INFO] [stdout]   45:     0x7704578efa04 - 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 0.15s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "76c78c45ea6f01e4e0610842984311c9e3477dfb3cffee5d8e1758c817416844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c78c45ea6f01e4e0610842984311c9e3477dfb3cffee5d8e1758c817416844", kill_on_drop: false }`
[INFO] [stdout] 76c78c45ea6f01e4e0610842984311c9e3477dfb3cffee5d8e1758c817416844