[INFO] fetching crate otarustlings 1.0.0...
[INFO] testing otarustlings-1.0.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate otarustlings 1.0.0 into /workspace/builds/worker-5-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate otarustlings 1.0.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8
[INFO] running `Command { std: "docker" "start" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
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[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 `release` profile [optimized] target(s) in 28.29s
[INFO] running `Command { std: "docker" "inspect" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", 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 `release` profile [optimized] target(s) in 1.45s
[INFO] running `Command { std: "docker" "inspect" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--release", 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 `release` profile [optimized] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib/lib.rs (/opt/rustwide/target/release/deps/otarustlings-37c52714b54a1c70)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] [2J[?25l[1;1H[38;5;12m
[*] [0mCompiling...
[INFO] [stdout] [2J[?25l[1;1H[38;5;12m
[*] test tester::tests::terminates_in_menu ... [0mCompiling...
[INFO] [stdout] ok[2J[?25l
[INFO] [stdout] [1;1H[38;5;12m
[*] [0mCompiling...
[INFO] [stdout] test tester::tests::test_exercise_exit ... FAILED
[INFO] [stdout] test tester::tests::terminates_watching ... FAILED
[INFO] [stdout] test tester::tests::test_exercise ... FAILED
[INFO] [stdout] test exercise::tests::compile_failure ... FAILED
[INFO] [stdout] test exercise::tests::compile_success ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tester::tests::test_exercise_exit stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tester::tests::test_exercise_exit' (2321) 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: <otarustlings::tester::TesterState<otarustlings::tester::WatchingExercise> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]    1: <otarustlings::tester::TesterState<otarustlings::tester::InMenu> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]    2: otarustlings::tester::tests::test_exercise_exit
[INFO] [stdout]    3: <otarustlings::tester::tests::test_exercise_exit::{closure#0} as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]    4: test::__rust_begin_short_backtrace::<core::result::Result<(), alloc::string::String>, fn() -> core::result::Result<(), alloc::string::String>>
[INFO] [stdout]    5: test::run_test::{closure#0}
[INFO] [stdout]    6: std::sys::backtrace::__rust_begin_short_backtrace::<test::run_test::{closure#1}, ()>
[INFO] [stdout]    7: <std::thread::lifecycle::spawn_unchecked<test::run_test::{closure#1}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]    8: <std::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]    9: <unknown>
[INFO] [stdout]   10: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5ad76c648901 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5ad76c65f86a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5ad76c64e5dc - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5ad76c623696 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5ad76c640729 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5ad76c5cb240 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5ad76c6408e2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5ad76c623742 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5ad76c61c1b9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5ad76c62433d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5ad76c65ff9c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5ad76c65fd72 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5ad76c5750f5 - otarustlings[e2777a9712f3fad3]::tester::tests::test_exercise_exit
[INFO] [stdout]   13:     0x5ad76c578919 - <otarustlings[e2777a9712f3fad3]::tester::tests::test_exercise_exit::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   14:     0x5ad76c5be52b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   15:     0x5ad76c5cbb95 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   16:     0x5ad76c5c5454 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   17:     0x5ad76c5cecf2 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   18:     0x5ad76c647de9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   19:     0x76949fbc1dfa - <unknown>
[INFO] [stdout]   20:     0x76949fc553d4 - clone
[INFO] [stdout]   21:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- tester::tests::terminates_watching stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tester::tests::terminates_watching' (2319) 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: <otarustlings::tester::TesterState<otarustlings::tester::WatchingExercise> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]    1: <otarustlings::tester::TesterState<otarustlings::tester::InMenu> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]    2: otarustlings::tester::tests::terminates_watching
[INFO] [stdout]    3: <otarustlings::tester::tests::terminates_watching::{closure#0} as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]    4: test::__rust_begin_short_backtrace::<core::result::Result<(), alloc::string::String>, fn() -> core::result::Result<(), alloc::string::String>>
[INFO] [stdout]    5: test::run_test::{closure#0}
[INFO] [stdout]    6: std::sys::backtrace::__rust_begin_short_backtrace::<test::run_test::{closure#1}, ()>
[INFO] [stdout]    7: <std::thread::lifecycle::spawn_unchecked<test::run_test::{closure#1}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]    8: <std::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]    9: <unknown>
[INFO] [stdout]   10: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5ad76c648901 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5ad76c65f86a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5ad76c64e5dc - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5ad76c623696 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5ad76c640729 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5ad76c5cb240 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5ad76c6408e2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5ad76c623742 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5ad76c61c1b9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5ad76c62433d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5ad76c65ff9c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5ad76c65fd72 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5ad76c575329 - otarustlings[e2777a9712f3fad3]::tester::tests::terminates_watching
[INFO] [stdout]   13:     0x5ad76c578939 - <otarustlings[e2777a9712f3fad3]::tester::tests::terminates_watching::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   14:     0x5ad76c5be52b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   15:     0x5ad76c5cbb95 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   16:     0x5ad76c5c5454 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   17:     0x5ad76c5cecf2 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   18:     0x5ad76c647de9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   19:     0x76949fbc1dfa - <unknown>
[INFO] [stdout]   20:     0x76949fc553d4 - clone
[INFO] [stdout]   21:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- tester::tests::test_exercise stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tester::tests::test_exercise' (2320) 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: <otarustlings::tester::TesterState<otarustlings::tester::WatchingExercise> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]    1: <otarustlings::tester::TesterState<otarustlings::tester::InMenu> as otarustlings::tester::StateMachine>::handle_message
[INFO] [stdout]    2: otarustlings::tester::tests::test_exercise
[INFO] [stdout]    3: <otarustlings::tester::tests::test_exercise::{closure#0} as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]    4: test::__rust_begin_short_backtrace::<core::result::Result<(), alloc::string::String>, fn() -> core::result::Result<(), alloc::string::String>>
[INFO] [stdout]    5: test::run_test::{closure#0}
[INFO] [stdout]    6: std::sys::backtrace::__rust_begin_short_backtrace::<test::run_test::{closure#1}, ()>
[INFO] [stdout]    7: <std::thread::lifecycle::spawn_unchecked<test::run_test::{closure#1}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]    8: <std::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]    9: <unknown>
[INFO] [stdout]   10: clone
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5ad76c648901 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5ad76c65f86a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5ad76c64e5dc - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5ad76c623696 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5ad76c640729 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5ad76c5cb240 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5ad76c6408e2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5ad76c623742 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5ad76c61c1b9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5ad76c62433d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5ad76c65ff9c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5ad76c65fd72 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stdout]   12:     0x5ad76c574cd9 - otarustlings[e2777a9712f3fad3]::tester::tests::test_exercise
[INFO] [stdout]   13:     0x5ad76c5788d9 - <otarustlings[e2777a9712f3fad3]::tester::tests::test_exercise::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   14:     0x5ad76c5be52b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]   15:     0x5ad76c5cbb95 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   16:     0x5ad76c5c5454 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   17:     0x5ad76c5cecf2 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   18:     0x5ad76c647de9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   19:     0x76949fbc1dfa - <unknown>
[INFO] [stdout]   20:     0x76949fc553d4 - clone
[INFO] [stdout]   21:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::tests::compile_failure stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::tests::compile_failure' (2316) panicked at src/lib/exercise.rs:249:13:
[INFO] [stdout] assertion failed: output.stderr.contains("not a function")
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5ad76c648901 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x5ad76c65f86a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stdout]    2:     0x5ad76c64e5dc - <alloc[2182bb758b4b3781]::vec::Vec<u8> as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x5ad76c623696 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x5ad76c640729 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stdout]    5:     0x5ad76c5cb240 - test[9d35eded1c95d3be]::test_main_inner::<test[9d35eded1c95d3be]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x5ad76c6408e2 - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x5ad76c623774 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x5ad76c61c1b9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x5ad76c62433d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stdout]   10:     0x5ad76c65ff9c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stdout]   11:     0x5ad76c65ff62 - core[df12db4294e9bfd3]::panicking::panic
[INFO] [stdout]   12:     0x5ad76c578efb - otarustlings[e2777a9712f3fad3]::exercise::tests::compile_failure
[INFO] [stdout]   13:     0x5ad76c578959 - <otarustlings[e2777a9712f3fad3]::exercise::tests::compile_failure::{closure#0} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   14:     0x5ad76c5be52b - test[9d35eded1c95d3be]::__rust_begin_short_backtrace::<core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>, fn() -> core[df12db4294e9bfd3]::result::Result<(), alloc[2182bb758b4b3781]::string::String>>
[INFO] [stdout]   15:     0x5ad76c5cbb95 - test[9d35eded1c95d3be]::run_test::{closure#0}
[INFO] [stdout]   16:     0x5ad76c5c5454 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>
[INFO] [stdout]   17:     0x5ad76c5cecf2 - <std[70759c8f55707aa4]::thread::lifecycle::spawn_unchecked<test[9d35eded1c95d3be]::run_test::{closure#1}, ()>::{closure#1} as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   18:     0x5ad76c647de9 - <std[70759c8f55707aa4]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   19:     0x76949fbc1dfa - <unknown>
[INFO] [stdout]   20:     0x76949fc553d4 - clone
[INFO] [stdout]   21:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     exercise::tests::compile_failure
[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. 2 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8", kill_on_drop: false }`
[INFO] [stdout] 9764f3c53e7806221ca227f404726f99d070cc0ba82da02e4a46ad26a4451eb8
