[INFO] fetching crate otarustlings 1.0.0...
[INFO] testing otarustlings-1.0.0 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate otarustlings 1.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate otarustlings 1.0.0
[INFO] finished tweaking crates.io crate otarustlings 1.0.0
[INFO] tweaked toml for crates.io crate otarustlings 1.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate otarustlings 1.0.0 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate otarustlings 1.0.0 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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d08f21147bac5b8733b8465898f7900a69e8428af30aa4c5f13142b41da77a97
[INFO] running `Command { std: "docker" "start" "-a" "d08f21147bac5b8733b8465898f7900a69e8428af30aa4c5f13142b41da77a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d08f21147bac5b8733b8465898f7900a69e8428af30aa4c5f13142b41da77a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d08f21147bac5b8733b8465898f7900a69e8428af30aa4c5f13142b41da77a97", kill_on_drop: false }`
[INFO] [stdout] d08f21147bac5b8733b8465898f7900a69e8428af30aa4c5f13142b41da77a97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 929f2b133d64bf6afe1f1f96e6fecba103c1d29a7e4e6f776ae10b65233ff5d6
[INFO] running `Command { std: "docker" "start" "-a" "929f2b133d64bf6afe1f1f96e6fecba103c1d29a7e4e6f776ae10b65233ff5d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling cpufeatures v0.2.2
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tracing-core v0.1.26
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling object v0.28.3
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling filetime v0.2.16
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling crossterm v0.23.2
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling tracing-subscriber v0.3.11
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling rust-embed-utils v7.2.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling rust-embed-impl v6.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]    Compiling rust-embed v6.4.0
[INFO] [stderr]    Compiling tracing v0.1.34
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling clap v3.1.15
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling otarustlings v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib/state.rs:268:19
[INFO] [stdout]     |
[INFO] [stdout] 267 |         &'s self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] 268 |     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout]     |                   ^^                      ^^                             --               -- the same lifetime is named here
[INFO] [stdout]     |                   |                       |                              |
[INFO] [stdout]     |                   |                       |                              the same lifetime is named here
[INFO] [stdout]     |                   |                       the same lifetime is elided here
[INFO] [stdout]     |                   the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'s`
[INFO] [stdout]     |
[INFO] [stdout] 268 -     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout] 268 +     ) -> GroupBy<&'s str, btree_set::Iter<'s, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.40s
[INFO] running `Command { std: "docker" "inspect" "929f2b133d64bf6afe1f1f96e6fecba103c1d29a7e4e6f776ae10b65233ff5d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "929f2b133d64bf6afe1f1f96e6fecba103c1d29a7e4e6f776ae10b65233ff5d6", kill_on_drop: false }`
[INFO] [stdout] 929f2b133d64bf6afe1f1f96e6fecba103c1d29a7e4e6f776ae10b65233ff5d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48aa7719382c7112fa55db227a021066380a13c234a65542804af461970d0637
[INFO] running `Command { std: "docker" "start" "-a" "48aa7719382c7112fa55db227a021066380a13c234a65542804af461970d0637", kill_on_drop: false }`
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib/state.rs:268:19
[INFO] [stdout]     |
[INFO] [stdout] 267 |         &'s self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] 268 |     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout]     |                   ^^                      ^^                             --               -- the same lifetime is named here
[INFO] [stdout]     |                   |                       |                              |
[INFO] [stdout]     |                   |                       |                              the same lifetime is named here
[INFO] [stdout]     |                   |                       the same lifetime is elided here
[INFO] [stdout]     |                   the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'s`
[INFO] [stdout]     |
[INFO] [stdout] 268 -     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout] 268 +     ) -> GroupBy<&'s str, btree_set::Iter<'s, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling otarustlings v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/lib/state.rs:268:19
[INFO] [stdout]     |
[INFO] [stdout] 267 |         &'s self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] 268 |     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout]     |                   ^^                      ^^                             --               -- the same lifetime is named here
[INFO] [stdout]     |                   |                       |                              |
[INFO] [stdout]     |                   |                       |                              the same lifetime is named here
[INFO] [stdout]     |                   |                       the same lifetime is elided here
[INFO] [stdout]     |                   the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'s`
[INFO] [stdout]     |
[INFO] [stdout] 268 -     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout] 268 +     ) -> GroupBy<&'s str, btree_set::Iter<'s, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "48aa7719382c7112fa55db227a021066380a13c234a65542804af461970d0637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48aa7719382c7112fa55db227a021066380a13c234a65542804af461970d0637", kill_on_drop: false }`
[INFO] [stdout] 48aa7719382c7112fa55db227a021066380a13c234a65542804af461970d0637
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6735b0e6040e02bde3a9f00e17cb5e271b0c72906a5cab9bd90861b46cee135d
[INFO] running `Command { std: "docker" "start" "-a" "6735b0e6040e02bde3a9f00e17cb5e271b0c72906a5cab9bd90861b46cee135d", kill_on_drop: false }`
[INFO] [stderr] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/lib/state.rs:268:19
[INFO] [stderr]     |
[INFO] [stderr] 267 |         &'s self,
[INFO] [stderr]     |          -- the lifetime is named here
[INFO] [stderr] 268 |     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stderr]     |                   ^^                      ^^                             --               -- the same lifetime is named here
[INFO] [stderr]     |                   |                       |                              |
[INFO] [stderr]     |                   |                       |                              the same lifetime is named here
[INFO] [stderr]     |                   |                       the same lifetime is elided here
[INFO] [stderr]     |                   the same lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: consistently use `'s`
[INFO] [stderr]     |
[INFO] [stderr] 268 -     ) -> GroupBy<&'_ str, btree_set::Iter<'_, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stderr] 268 +     ) -> GroupBy<&'s str, btree_set::Iter<'s, Exercise>, impl FnMut(&'_ &'s Exercise) -> &'s str>
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `otarustlings` (lib) generated 1 warning (run `cargo fix --lib -p otarustlings` to apply 1 suggestion)
[INFO] [stderr] warning: `otarustlings` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib/lib.rs (/opt/rustwide/target/debug/deps/otarustlings-345eedea6f84c1c8)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] [2J[?25l[1;1H[38;5;12m
[*] [0mCompiling...
[INFO] [stdout] test tester::tests::terminates_in_menu ... ok
[INFO] [stdout] [2J[?25l[1;1H[38;5;12m
[*] [0mCompiling...
[INFO] [stdout] [2J[?25l[1;1H[38;5;12m
[*] [0mCompiling...
[INFO] [stdout] test exercise::tests::compile_failure ... ok
[INFO] [stdout] test exercise::tests::compile_success ... ok
[INFO] [stdout] test tester::tests::terminates_watching ... FAILED
[INFO] [stdout] test tester::tests::test_exercise ... FAILED
[INFO] [stdout] test tester::tests::test_exercise_exit ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tester::tests::terminates_watching stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tester::tests::terminates_watching' (28) panicked at src/lib/tester.rs:497:59:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Read-only file system (os error 30)
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: <core::result::Result<T,F> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible,E>>>::from_residual
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:2189:27
[INFO] [stdout]    1: <otarustlings::tester::TesterState<otarustlings::tester::WatchingExercise> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]              at ./src/lib/tester.rs:294:17
[INFO] [stdout]    2: <otarustlings::tester::TesterState<otarustlings::tester::InMenu> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]              at ./src/lib/tester.rs:178:26
[INFO] [stdout]    3: otarustlings::tester::tests::terminates_watching
[INFO] [stdout]              at ./src/lib/tester.rs:497:21
[INFO] [stdout]    4: otarustlings::tester::tests::terminates_watching::{{closure}}
[INFO] [stdout]              at ./src/lib/tester.rs:495:29
[INFO] [stdout]    5: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]    6: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]       test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]    7: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]       <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]       std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]       test::run_test_in_process
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]       test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]    8: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]       std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]    9: std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]       <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]       std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::thread::lifecycle::spawn_unchecked::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]       core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   10: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]       std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   11: <unknown>
[INFO] [stdout]   12: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ecb566a5f2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55ecb566a5f2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55ecb566a5f2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x55ecb566a5f2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x55ecb567b2ba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x55ecb567b2ba - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x55ecb56367b6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55ecb56367b6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x55ecb5647dd9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x55ecb5647dd9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x55ecb5647c71 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x55ecb55b506e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x55ecb55b506e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55ecb5648052 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x55ecb5648052 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x55ecb5647e98 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x55ecb5642c29 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x55ecb562aa5d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x55ecb56841fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x55ecb56839b2 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x55ecb547e09e - core::result::Result<T,E>::unwrap::hb4756cfca5a9235f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x55ecb547e09e - otarustlings::tester::tests::terminates_watching::h5c435db634826ebc
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/tester.rs:497:59
[INFO] [stdout]   22:     0x55ecb547e2d7 - otarustlings::tester::tests::terminates_watching::{{closure}}::h8a1d89417bd7889f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/tester.rs:495:29
[INFO] [stdout]   23:     0x55ecb54a5f16 - core::ops::function::FnOnce::call_once::h0854c129d35f4490
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ecb55b4e6b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55ecb55b4e6b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x55ecb55c883a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x55ecb55c883a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x55ecb55c883a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x55ecb55c883a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x55ecb55c883a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x55ecb55c883a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x55ecb55c883a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x55ecb55a2c94 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x55ecb55a2c94 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x55ecb55a6552 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x55ecb55a6552 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x55ecb55a6552 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x55ecb55a6552 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x55ecb55a6552 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x55ecb55a6552 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x55ecb55a6552 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ecb563dc9f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x55ecb563dc9f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x75b315c1aaa4 - <unknown>
[INFO] [stdout]   45:     0x75b315ca7a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- tester::tests::test_exercise stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tester::tests::test_exercise' (29) panicked at src/lib/tester.rs:487:59:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Read-only file system (os error 30)
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: <core::result::Result<T,F> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible,E>>>::from_residual
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:2189:27
[INFO] [stdout]    1: <otarustlings::tester::TesterState<otarustlings::tester::WatchingExercise> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]              at ./src/lib/tester.rs:294:17
[INFO] [stdout]    2: <otarustlings::tester::TesterState<otarustlings::tester::InMenu> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]              at ./src/lib/tester.rs:178:26
[INFO] [stdout]    3: otarustlings::tester::tests::test_exercise
[INFO] [stdout]              at ./src/lib/tester.rs:487:21
[INFO] [stdout]    4: otarustlings::tester::tests::test_exercise::{{closure}}
[INFO] [stdout]              at ./src/lib/tester.rs:481:23
[INFO] [stdout]    5: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]    6: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]       test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]    7: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]       <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]       std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]       test::run_test_in_process
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]       test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]    8: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]       std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]    9: std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]       <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]       std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::thread::lifecycle::spawn_unchecked::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]       core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   10: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]       std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   11: <unknown>
[INFO] [stdout]   12: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ecb566a5f2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55ecb566a5f2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55ecb566a5f2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x55ecb566a5f2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x55ecb567b2ba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x55ecb567b2ba - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x55ecb56367b6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55ecb56367b6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x55ecb5647dd9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x55ecb5647dd9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x55ecb5647c71 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x55ecb55b506e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x55ecb55b506e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55ecb5648052 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x55ecb5648052 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x55ecb5647e98 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x55ecb5642c29 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x55ecb562aa5d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x55ecb56841fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x55ecb56839b2 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x55ecb547d6e6 - core::result::Result<T,E>::unwrap::hb4756cfca5a9235f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x55ecb547d6e6 - otarustlings::tester::tests::test_exercise::h76ec71f5e16ac50e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/tester.rs:487:59
[INFO] [stdout]   22:     0x55ecb547d887 - otarustlings::tester::tests::test_exercise::{{closure}}::hb73c06dd2cad88e8
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/tester.rs:481:23
[INFO] [stdout]   23:     0x55ecb54a60c6 - core::ops::function::FnOnce::call_once::h865ffc805abed215
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ecb55b4e6b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55ecb55b4e6b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x55ecb55c883a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x55ecb55c883a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x55ecb55c883a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x55ecb55c883a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x55ecb55c883a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x55ecb55c883a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x55ecb55c883a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x55ecb55a2c94 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x55ecb55a2c94 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x55ecb55a6552 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x55ecb55a6552 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x55ecb55a6552 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x55ecb55a6552 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x55ecb55a6552 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x55ecb55a6552 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x55ecb55a6552 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ecb563dc9f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x55ecb563dc9f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x75b315c1aaa4 - <unknown>
[INFO] [stdout]   45:     0x75b315ca7a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- tester::tests::test_exercise_exit stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tester::tests::test_exercise_exit' (30) panicked at src/lib/tester.rs:508:59:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Read-only file system (os error 30)
[INFO] [stdout] 
[INFO] [stdout] Stack backtrace:
[INFO] [stdout]    0: <core::result::Result<T,F> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible,E>>>::from_residual
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:2189:27
[INFO] [stdout]    1: <otarustlings::tester::TesterState<otarustlings::tester::WatchingExercise> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]              at ./src/lib/tester.rs:294:17
[INFO] [stdout]    2: <otarustlings::tester::TesterState<otarustlings::tester::InMenu> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]              at ./src/lib/tester.rs:178:26
[INFO] [stdout]    3: otarustlings::tester::tests::test_exercise_exit
[INFO] [stdout]              at ./src/lib/tester.rs:508:21
[INFO] [stdout]    4: otarustlings::tester::tests::test_exercise_exit::{{closure}}
[INFO] [stdout]              at ./src/lib/tester.rs:506:28
[INFO] [stdout]    5: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]    6: core::ops::function::FnOnce::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]       test::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]    7: test::run_test_in_process::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]       <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]       std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]       test::run_test_in_process
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]       test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]    8: test::run_test::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]       std::sys::backtrace::__rust_begin_short_backtrace
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]    9: std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]       <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]       std::panicking::catch_unwind::do_call
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::thread::lifecycle::spawn_unchecked::{{closure}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]       core::ops::function::FnOnce::call_once{{vtable.shim}}
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   10: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]       std::sys::thread::unix::Thread::new::thread_start
[INFO] [stdout]              at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   11: <unknown>
[INFO] [stdout]   12: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55ecb566a5f2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55ecb566a5f2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55ecb566a5f2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x55ecb566a5f2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x55ecb567b2ba - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x55ecb567b2ba - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x55ecb56367b6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55ecb56367b6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x55ecb5647dd9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x55ecb5647dd9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x55ecb5647c71 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x55ecb55b506e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x55ecb55b506e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55ecb5648052 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x55ecb5648052 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x55ecb5647e98 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x55ecb5642c29 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x55ecb562aa5d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x55ecb56841fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x55ecb56839b2 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x55ecb547dc6e - core::result::Result<T,E>::unwrap::hb4756cfca5a9235f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x55ecb547dc6e - otarustlings::tester::tests::test_exercise_exit::hda2880a68989477c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/tester.rs:508:59
[INFO] [stdout]   22:     0x55ecb547df57 - otarustlings::tester::tests::test_exercise_exit::{{closure}}::hb4a0e8628c2b608b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib/tester.rs:506:28
[INFO] [stdout]   23:     0x55ecb54a6286 - core::ops::function::FnOnce::call_once::hdae6ed7c79a78d16
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ecb55b4e6b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55ecb55b4e6b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x55ecb55c883a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x55ecb55c883a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x55ecb55c883a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x55ecb55c883a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x55ecb55c883a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x55ecb55c883a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x55ecb55c883a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x55ecb55a2c94 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x55ecb55a2c94 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x55ecb55a6552 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x55ecb55a6552 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x55ecb55a6552 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x55ecb55a6552 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x55ecb55a6552 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x55ecb55a6552 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x55ecb55a6552 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ecb563dc9f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x55ecb563dc9f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x75b315c1aaa4 - <unknown>
[INFO] [stdout]   45:     0x75b315ca7a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tester::tests::terminates_watching
[INFO] [stdout]     tester::tests::test_exercise
[INFO] [stdout]     tester::tests::test_exercise_exit
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.65s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "6735b0e6040e02bde3a9f00e17cb5e271b0c72906a5cab9bd90861b46cee135d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6735b0e6040e02bde3a9f00e17cb5e271b0c72906a5cab9bd90861b46cee135d", kill_on_drop: false }`
[INFO] [stdout] 6735b0e6040e02bde3a9f00e17cb5e271b0c72906a5cab9bd90861b46cee135d
