[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-2024-spring-ExBritainia
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-2024-spring-ExBritainia" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-ExBritainia", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-ExBritainia'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23139f499b75fdd88823c5e9cab14b5ab953d048
[INFO] testing LearningOS/rust-rustlings-2024-spring-ExBritainia against try#311784882baa42a9638298cb325fa01a062c9d0f+cargoflags=-Zbuild-dir-new-layout for pr-149852
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-ExBritainia" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-2024-spring-ExBritainia
[INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2024-spring-ExBritainia
[INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2024-spring-ExBritainia written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-2024-spring-ExBritainia on toolchain 311784882baa42a9638298cb325fa01a062c9d0f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+311784882baa42a9638298cb325fa01a062c9d0f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2024-spring-ExBritainia 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" "+311784882baa42a9638298cb325fa01a062c9d0f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+311784882baa42a9638298cb325fa01a062c9d0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbf172cb6465f921d750a2981a5e402841de568ac4afdc35b61a4d54e5f3603d
[INFO] running `Command { std: "docker" "start" "-a" "bbf172cb6465f921d750a2981a5e402841de568ac4afdc35b61a4d54e5f3603d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbf172cb6465f921d750a2981a5e402841de568ac4afdc35b61a4d54e5f3603d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbf172cb6465f921d750a2981a5e402841de568ac4afdc35b61a4d54e5f3603d", kill_on_drop: false }`
[INFO] [stdout] bbf172cb6465f921d750a2981a5e402841de568ac4afdc35b61a4d54e5f3603d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+311784882baa42a9638298cb325fa01a062c9d0f" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 23b004fc5523affb81b1e5480a47de1107ca79c130607bf8397c7633303ed420
[INFO] running `Command { std: "docker" "start" "-a" "23b004fc5523affb81b1e5480a47de1107ca79c130607bf8397c7633303ed420", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]    Compiling log v0.4.19
[INFO] [stderr]    Compiling smallvec v1.11.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling regex-syntax v0.7.4
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stderr]    Compiling argh_shared v0.1.10
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling aho-corasick v1.0.2
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling serde_json v1.0.102
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling console v0.15.7
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling walkdir v2.3.3
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling filetime v0.2.21
[INFO] [stderr]    Compiling mio v0.8.8
[INFO] [stderr]    Compiling socket2 v0.4.9
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling itoa v1.0.8
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.10
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.14
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling home v0.5.5
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling regex-automata v0.3.3
[INFO] [stderr]    Compiling argh_derive v0.1.10
[INFO] [stderr]    Compiling argh v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.171
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling regex v1.9.1
[INFO] [stderr]    Compiling indicatif v0.16.2
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/exercise.rs:113:20
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the 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: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 46.75s
[INFO] running `Command { std: "docker" "inspect" "23b004fc5523affb81b1e5480a47de1107ca79c130607bf8397c7633303ed420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b004fc5523affb81b1e5480a47de1107ca79c130607bf8397c7633303ed420", kill_on_drop: false }`
[INFO] [stdout] 23b004fc5523affb81b1e5480a47de1107ca79c130607bf8397c7633303ed420
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+311784882baa42a9638298cb325fa01a062c9d0f" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 4e216ef9ff40a8cfa4c3db903189ba13da7b36d5028f5be1e6e4730ed52e6a2a
[INFO] running `Command { std: "docker" "start" "-a" "4e216ef9ff40a8cfa4c3db903189ba13da7b36d5028f5be1e6e4730ed52e6a2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling predicates-core v1.0.6
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/exercise.rs:113:20
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the 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: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling termtree v0.4.1
[INFO] [stderr]    Compiling predicates-tree v1.0.9
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling assert_cmd v0.11.1
[INFO] [stderr]    Compiling rustlings v5.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/exercise.rs:113:20
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the 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: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.87s
[INFO] running `Command { std: "docker" "inspect" "4e216ef9ff40a8cfa4c3db903189ba13da7b36d5028f5be1e6e4730ed52e6a2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e216ef9ff40a8cfa4c3db903189ba13da7b36d5028f5be1e6e4730ed52e6a2a", kill_on_drop: false }`
[INFO] [stdout] 4e216ef9ff40a8cfa4c3db903189ba13da7b36d5028f5be1e6e4730ed52e6a2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+311784882baa42a9638298cb325fa01a062c9d0f" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] e62a8f420983a21893966fa23f5afce3bc282a252956ddd4fbc0dbd2265b943e
[INFO] running `Command { std: "docker" "start" "-a" "e62a8f420983a21893966fa23f5afce3bc282a252956ddd4fbc0dbd2265b943e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/exercise.rs:113:20
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the 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: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rustlings` (bin "rustlings") generated 1 warning (run `cargo fix --bin "rustlings" -p rustlings` to apply 1 suggestion)
[INFO] [stderr] warning: `rustlings` (bin "rustlings" test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/build/rustlings/ddf62adac1d73eef/deps/rustlings-ddf62adac1d73eef)
[INFO] [stdout] test exercise::test::test_pending_state ... ok
[INFO] [stdout] test exercise::test::test_finished_exercise ... ok
[INFO] [stdout] test exercise::test::test_clean ... FAILED
[INFO] [stdout] test exercise::test::test_exercise_with_output ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_clean stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::test::test_clean' (17) panicked at src/exercise.rs:303:36:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x57bc9eb4d012 - std[7ec1163218fd4288]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x57bc9eb4d012 - std[7ec1163218fd4288]::backtrace_rs::backtrace::trace_unsynchronized::<std[7ec1163218fd4288]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x57bc9eb4d012 - std[7ec1163218fd4288]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:68:9
[INFO] [stdout]    3:     0x57bc9eb4d012 - <<std[7ec1163218fd4288]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[784384805ecffc2c]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:38:26
[INFO] [stdout]    4:     0x57bc9eb62ce7 - <core[784384805ecffc2c]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x57bc9eb62ce7 - core[784384805ecffc2c]::fmt::write
[INFO] [stdout]    6:     0x57bc9eb51f26 - std[7ec1163218fd4288]::io::default_write_fmt::<alloc[a1c94c07e218b93e]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/io/mod.rs:614:11
[INFO] [stdout]    7:     0x57bc9eb51f26 - <alloc[a1c94c07e218b93e]::vec::Vec<u8> as std[7ec1163218fd4288]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/io/mod.rs:1969:13
[INFO] [stdout]    8:     0x57bc9eb2b44f - <std[7ec1163218fd4288]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:41:9
[INFO] [stdout]    9:     0x57bc9eb2b44f - std[7ec1163218fd4288]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x57bc9eb45059 - std[7ec1163218fd4288]::panicking::default_hook
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x57bc9e8d341e - <alloc[a1c94c07e218b93e]::boxed::Box<dyn for<'a, 'b> core[784384805ecffc2c]::ops::function::Fn<(&'a std[7ec1163218fd4288]::panic::PanicHookInfo<'b>,), Output = ()> + core[784384805ecffc2c]::marker::Sync + core[784384805ecffc2c]::marker::Send> as core[784384805ecffc2c]::ops::function::Fn<(&std[7ec1163218fd4288]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x57bc9e8d341e - test[370c4ac83c3338cc]::test_main_with_exit_callback::<test[370c4ac83c3338cc]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x57bc9eb45212 - <alloc[a1c94c07e218b93e]::boxed::Box<dyn for<'a, 'b> core[784384805ecffc2c]::ops::function::Fn<(&'a std[7ec1163218fd4288]::panic::PanicHookInfo<'b>,), Output = ()> + core[784384805ecffc2c]::marker::Sync + core[784384805ecffc2c]::marker::Send> as core[784384805ecffc2c]::ops::function::Fn<(&std[7ec1163218fd4288]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x57bc9eb45212 - std[7ec1163218fd4288]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x57bc9eb2b508 - std[7ec1163218fd4288]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x57bc9eb20589 - std[7ec1163218fd4288]::sys::backtrace::__rust_end_short_backtrace::<std[7ec1163218fd4288]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:176:18
[INFO] [stdout]   17:     0x57bc9eb2c43d - __rustc[cbcfe5aadef28f7f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x57bc9eb6342c - core[784384805ecffc2c]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x57bc9eb631a2 - core[784384805ecffc2c]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x57bc9e8ba7fc - <core[784384805ecffc2c]::result::Result<std[7ec1163218fd4288]::fs::File, std[7ec1163218fd4288]::io::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x57bc9e8ba7fc - rustlings[af20ef9ed1b9efdf]::exercise::test::test_clean
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:303:36
[INFO] [stdout]   22:     0x57bc9e8b75c7 - rustlings[af20ef9ed1b9efdf]::exercise::test::test_clean::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:302:20
[INFO] [stdout]   23:     0x57bc9e8c0a26 - <rustlings[af20ef9ed1b9efdf]::exercise::test::test_clean::{closure#0} as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x57bc9e8c774b - <fn() -> core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x57bc9e8c774b - test[370c4ac83c3338cc]::__rust_begin_short_backtrace::<core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>, fn() -> core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x57bc9e8d402a - test[370c4ac83c3338cc]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x57bc9e8d402a - <core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x57bc9e8d402a - std[7ec1163218fd4288]::panicking::catch_unwind::do_call::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}>, core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x57bc9e8d402a - std[7ec1163218fd4288]::panicking::catch_unwind::<core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>, core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x57bc9e8d402a - std[7ec1163218fd4288]::panic::catch_unwind::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}>, core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x57bc9e8d402a - test[370c4ac83c3338cc]::run_test_in_process
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x57bc9e8d402a - test[370c4ac83c3338cc]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x57bc9e8ce4c4 - test[370c4ac83c3338cc]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x57bc9e8ce4c4 - std[7ec1163218fd4288]::sys::backtrace::__rust_begin_short_backtrace::<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:160:18
[INFO] [stdout]   35:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked::<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/thread/lifecycle.rs:92:13
[INFO] [stdout]   36:     0x57bc9e8d6b22 - <core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::panicking::catch_unwind::do_call::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::panicking::catch_unwind::<(), core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::panic::catch_unwind::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked::<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/thread/lifecycle.rs:90:26
[INFO] [stdout]   41:     0x57bc9e8d6b22 - <std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1} as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x57bc9eb4c72f - <alloc[a1c94c07e218b93e]::boxed::Box<dyn core[784384805ecffc2c]::ops::function::FnOnce<(), Output = ()> + core[784384805ecffc2c]::marker::Send> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x57bc9eb4c72f - <std[7ec1163218fd4288]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   44:     0x79c0760a0aa4 - <unknown>
[INFO] [stdout]   45:     0x79c07612da64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::test::test_exercise_with_output' (18) panicked at src/exercise.rs:376:38:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: ExerciseOutput { stdout: "", stderr: "\u{1b}[1m\u{1b}[91merror\u{1b}[0m\u{1b}[1m: couldn't create a temp dir: Read-only file system (os error 30) at path \"/opt/rustwide/workdir/./rmetaa0ieon\"\u{1b}[0m\n\n\u{1b}[1m\u{1b}[91merror\u{1b}[0m\u{1b}[1m: aborting due to 1 previous error\u{1b}[0m\n\n" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x57bc9eb4d012 - std[7ec1163218fd4288]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x57bc9eb4d012 - std[7ec1163218fd4288]::backtrace_rs::backtrace::trace_unsynchronized::<std[7ec1163218fd4288]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x57bc9eb4d012 - std[7ec1163218fd4288]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:68:9
[INFO] [stdout]    3:     0x57bc9eb4d012 - <<std[7ec1163218fd4288]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[784384805ecffc2c]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:38:26
[INFO] [stdout]    4:     0x57bc9eb62ce7 - <core[784384805ecffc2c]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x57bc9eb62ce7 - core[784384805ecffc2c]::fmt::write
[INFO] [stdout]    6:     0x57bc9eb51f26 - std[7ec1163218fd4288]::io::default_write_fmt::<alloc[a1c94c07e218b93e]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/io/mod.rs:614:11
[INFO] [stdout]    7:     0x57bc9eb51f26 - <alloc[a1c94c07e218b93e]::vec::Vec<u8> as std[7ec1163218fd4288]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/io/mod.rs:1969:13
[INFO] [stdout]    8:     0x57bc9eb2b44f - <std[7ec1163218fd4288]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:41:9
[INFO] [stdout]    9:     0x57bc9eb2b44f - std[7ec1163218fd4288]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x57bc9eb45059 - std[7ec1163218fd4288]::panicking::default_hook
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x57bc9e8d341e - <alloc[a1c94c07e218b93e]::boxed::Box<dyn for<'a, 'b> core[784384805ecffc2c]::ops::function::Fn<(&'a std[7ec1163218fd4288]::panic::PanicHookInfo<'b>,), Output = ()> + core[784384805ecffc2c]::marker::Sync + core[784384805ecffc2c]::marker::Send> as core[784384805ecffc2c]::ops::function::Fn<(&std[7ec1163218fd4288]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x57bc9e8d341e - test[370c4ac83c3338cc]::test_main_with_exit_callback::<test[370c4ac83c3338cc]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x57bc9eb45212 - <alloc[a1c94c07e218b93e]::boxed::Box<dyn for<'a, 'b> core[784384805ecffc2c]::ops::function::Fn<(&'a std[7ec1163218fd4288]::panic::PanicHookInfo<'b>,), Output = ()> + core[784384805ecffc2c]::marker::Sync + core[784384805ecffc2c]::marker::Send> as core[784384805ecffc2c]::ops::function::Fn<(&std[7ec1163218fd4288]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x57bc9eb45212 - std[7ec1163218fd4288]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x57bc9eb2b508 - std[7ec1163218fd4288]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x57bc9eb20589 - std[7ec1163218fd4288]::sys::backtrace::__rust_end_short_backtrace::<std[7ec1163218fd4288]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:176:18
[INFO] [stdout]   17:     0x57bc9eb2c43d - __rustc[cbcfe5aadef28f7f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x57bc9eb6342c - core[784384805ecffc2c]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x57bc9eb631a2 - core[784384805ecffc2c]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x57bc9e8bb598 - <core[784384805ecffc2c]::result::Result<rustlings[af20ef9ed1b9efdf]::exercise::CompiledExercise, rustlings[af20ef9ed1b9efdf]::exercise::ExerciseOutput>>::unwrap
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x57bc9e8bb598 - rustlings[af20ef9ed1b9efdf]::exercise::test::test_exercise_with_output
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:376:38
[INFO] [stdout]   22:     0x57bc9e8b7657 - rustlings[af20ef9ed1b9efdf]::exercise::test::test_exercise_with_output::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:369:35
[INFO] [stdout]   23:     0x57bc9e8c0ae6 - <rustlings[af20ef9ed1b9efdf]::exercise::test::test_exercise_with_output::{closure#0} as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x57bc9e8c774b - <fn() -> core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x57bc9e8c774b - test[370c4ac83c3338cc]::__rust_begin_short_backtrace::<core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>, fn() -> core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x57bc9e8d402a - test[370c4ac83c3338cc]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x57bc9e8d402a - <core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x57bc9e8d402a - std[7ec1163218fd4288]::panicking::catch_unwind::do_call::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}>, core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x57bc9e8d402a - std[7ec1163218fd4288]::panicking::catch_unwind::<core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>, core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x57bc9e8d402a - std[7ec1163218fd4288]::panic::catch_unwind::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<test[370c4ac83c3338cc]::run_test_in_process::{closure#0}>, core[784384805ecffc2c]::result::Result<(), alloc[a1c94c07e218b93e]::string::String>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x57bc9e8d402a - test[370c4ac83c3338cc]::run_test_in_process
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x57bc9e8d402a - test[370c4ac83c3338cc]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x57bc9e8ce4c4 - test[370c4ac83c3338cc]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x57bc9e8ce4c4 - std[7ec1163218fd4288]::sys::backtrace::__rust_begin_short_backtrace::<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/backtrace.rs:160:18
[INFO] [stdout]   35:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked::<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/thread/lifecycle.rs:92:13
[INFO] [stdout]   36:     0x57bc9e8d6b22 - <core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::panicking::catch_unwind::do_call::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::panicking::catch_unwind::<(), core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::panic::catch_unwind::<core[784384805ecffc2c]::panic::unwind_safe::AssertUnwindSafe<std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x57bc9e8d6b22 - std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked::<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/thread/lifecycle.rs:90:26
[INFO] [stdout]   41:     0x57bc9e8d6b22 - <std[7ec1163218fd4288]::thread::lifecycle::spawn_unchecked<test[370c4ac83c3338cc]::run_test::{closure#1}, ()>::{closure#1} as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x57bc9eb4c72f - <alloc[a1c94c07e218b93e]::boxed::Box<dyn core[784384805ecffc2c]::ops::function::FnOnce<(), Output = ()> + core[784384805ecffc2c]::marker::Send> as core[784384805ecffc2c]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x57bc9eb4c72f - <std[7ec1163218fd4288]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/311784882baa42a9638298cb325fa01a062c9d0f/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   44:     0x79c0760a0aa4 - <unknown>
[INFO] [stdout]   45:     0x79c07612da64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     exercise::test::test_clean
[INFO] [stdout]     exercise::test::test_exercise_with_output
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "e62a8f420983a21893966fa23f5afce3bc282a252956ddd4fbc0dbd2265b943e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e62a8f420983a21893966fa23f5afce3bc282a252956ddd4fbc0dbd2265b943e", kill_on_drop: false }`
[INFO] [stdout] e62a8f420983a21893966fa23f5afce3bc282a252956ddd4fbc0dbd2265b943e
