[INFO] cloning repository https://github.com/os2edu/rustlings-swordow [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/os2edu/rustlings-swordow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-swordow", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-swordow'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b4ead86be0d202540ed0d31177b0e329bfd5c599 [INFO] testing os2edu/rustlings-swordow against beta-2025-10-28 for beta-1.92-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-swordow" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/os2edu/rustlings-swordow [INFO] finished tweaking git repo https://github.com/os2edu/rustlings-swordow [INFO] tweaked toml for git repo https://github.com/os2edu/rustlings-swordow written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/os2edu/rustlings-swordow on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/os2edu/rustlings-swordow 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9cdb435b2fdce10d47d1331e78c11921bcbeec1b9d311190d9768508bd894dae [INFO] running `Command { std: "docker" "start" "-a" "9cdb435b2fdce10d47d1331e78c11921bcbeec1b9d311190d9768508bd894dae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9cdb435b2fdce10d47d1331e78c11921bcbeec1b9d311190d9768508bd894dae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9cdb435b2fdce10d47d1331e78c11921bcbeec1b9d311190d9768508bd894dae", kill_on_drop: false }` [INFO] [stdout] 9cdb435b2fdce10d47d1331e78c11921bcbeec1b9d311190d9768508bd894dae [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b527bde5efa1155c6715ecac855eab87b2200d64cfb821d0e0a1766b88788a77 [INFO] running `Command { std: "docker" "start" "-a" "b527bde5efa1155c6715ecac855eab87b2200d64cfb821d0e0a1766b88788a77", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.137 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling parking_lot_core v0.9.4 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling lock_api v0.4.9 [INFO] [stderr] Compiling tokio v1.21.2 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling bytes v1.2.1 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling mio v0.8.5 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling socket2 v0.4.7 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling tokio-macros v1.8.0 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.5.9 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [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] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.85s [INFO] running `Command { std: "docker" "inspect" "b527bde5efa1155c6715ecac855eab87b2200d64cfb821d0e0a1766b88788a77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b527bde5efa1155c6715ecac855eab87b2200d64cfb821d0e0a1766b88788a77", kill_on_drop: false }` [INFO] [stdout] b527bde5efa1155c6715ecac855eab87b2200d64cfb821d0e0a1766b88788a77 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c8e60773265eff4ec0485de3a49bf961881b610cea4c471b05aa72e393f8bffc [INFO] running `Command { std: "docker" "start" "-a" "c8e60773265eff4ec0485de3a49bf961881b610cea4c471b05aa72e393f8bffc", kill_on_drop: false }` [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [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] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [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] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 4.13s [INFO] running `Command { std: "docker" "inspect" "c8e60773265eff4ec0485de3a49bf961881b610cea4c471b05aa72e393f8bffc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c8e60773265eff4ec0485de3a49bf961881b610cea4c471b05aa72e393f8bffc", kill_on_drop: false }` [INFO] [stdout] c8e60773265eff4ec0485de3a49bf961881b610cea4c471b05aa72e393f8bffc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7340ac80981a2a277f422006888338b8edd7e46bce26ec9c841a0d5b58234bc4 [INFO] running `Command { std: "docker" "start" "-a" "7340ac80981a2a277f422006888338b8edd7e46bce26ec9c841a0d5b58234bc4", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/exercise.rs:109:20 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn compile(&self) -> Result { [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] 109 | pub fn compile(&self) -> Result, 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 0.16s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-e420999b1e2c199f) [INFO] [stdout] [INFO] [stdout] running 4 tests [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' (25) panicked at src/exercise.rs:269:36: [INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5f98956f9392 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5f98956f9392 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5f98956f9392 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5f98956f9392 - ::fmt::h47627beda0767f4c [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5f989570a03f - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5f989570a03f - core::fmt::write::h8a63064c67176fd8 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25 [INFO] [stdout] 6: 0x5f98956c6983 - std::io::default_write_fmt::hd4797e693c0ec256 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5f98956c6983 - std::io::Write::write_fmt::h791e240ad2720c99 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5f98956d2b52 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5f98956d769f - std::panicking::default_hook::{{closure}}::h23e0299d4738b766 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5f98956d7531 - std::panicking::default_hook::hfeec6294e8751b62 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x5f989556b90e - as core::ops::function::Fn>::call::h3f5a16438cee2b4e [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9 [INFO] [stdout] 12: 0x5f989556b90e - test::test_main_with_exit_callback::{{closure}}::h9214498cef9aafc5 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5f98956d7caf - as core::ops::function::Fn>::call::hdb18da3e68df7464 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9 [INFO] [stdout] 14: 0x5f98956d7caf - std::panicking::panic_with_hook::hd57cd463d793ed79 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x5f98956d7b0a - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x5f98956d2c89 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x5f98956baf7d - __rustc[256c90bb7e548b45]::rust_begin_unwind [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x5f98957123c0 - core::panicking::panic_fmt::hf19c198748ef6a95 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x5f98957117c6 - core::result::unwrap_failed::he81173b5792ad6b0 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/result.rs:1862:5 [INFO] [stdout] 20: 0x5f9895541c0c - core::result::Result::unwrap::h45054c069b16b12c [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x5f9895541c0c - rustlings::exercise::test::test_clean::hf40adcccf909ac4b [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:36 [INFO] [stdout] 22: 0x5f9895541fe7 - rustlings::exercise::test::test_clean::{{closure}}::h01493fa0cfbe20f2 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x5f9895539f66 - core::ops::function::FnOnce::call_once::h15b1d99515bdfc71 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5f989556b75b - core::ops::function::FnOnce::call_once::h43f43c5185cf39c2 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5f989556b75b - test::__rust_begin_short_backtrace::hc4fa634eb2764bdc [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x5f989557fd78 - test::run_test_in_process::{{closure}}::h9f4b799a5211b72a [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x5f989557fd78 - as core::ops::function::FnOnce<()>>::call_once::ha572bf7dc5230a8f [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x5f989557fd78 - std::panicking::catch_unwind::do_call::hfd6ff51f25dd177b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x5f989557fd78 - std::panicking::catch_unwind::h8609b446221def5f [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x5f989557fd78 - std::panic::catch_unwind::h362f73cc48531e26 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5f989557fd78 - test::run_test_in_process::hf52fd21d696aae67 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x5f989557fd78 - test::run_test::{{closure}}::h7e780b8354e6d007 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x5f9895558b44 - test::run_test::{{closure}}::hdc2695f2276aad3e [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x5f9895558b44 - std::sys::backtrace::__rust_begin_short_backtrace::h2555b2113ed90fc9 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x5f989555c47a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h99800d480987dfb6 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:562:17 [INFO] [stdout] 36: 0x5f989555c47a - as core::ops::function::FnOnce<()>>::call_once::hbbb69b5294b2221b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x5f989555c47a - std::panicking::catch_unwind::do_call::h495689350c27df20 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x5f989555c47a - std::panicking::catch_unwind::hf22437c51d1b3740 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x5f989555c47a - std::panic::catch_unwind::habda1a57de8231f8 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5f989555c47a - std::thread::Builder::spawn_unchecked_::{{closure}}::h5833d8dda8c7e80b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:560:30 [INFO] [stdout] 41: 0x5f989555c47a - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha2910283a5058402 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5f98956cde9f - as core::ops::function::FnOnce>::call_once::he4d85cb537521972 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2005:9 [INFO] [stdout] 43: 0x5f98956cde9f - std::sys::thread::unix::Thread::new::thread_start::hbaf586a9e50a98cd [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 44: 0x777e37114aa4 - [INFO] [stdout] 45: 0x777e371a1a64 - clone [INFO] [stdout] 46: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' (26) panicked at src/exercise.rs:342:38: [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/./rmetaerR3aa\"\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: 0x5f98956f9392 - std::backtrace_rs::backtrace::libunwind::trace::h16acf28769fcd909 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5f98956f9392 - std::backtrace_rs::backtrace::trace_unsynchronized::hb5541aa5d4f92513 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5f98956f9392 - std::sys::backtrace::_print_fmt::h8ac8268cb667a306 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5f98956f9392 - ::fmt::h47627beda0767f4c [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5f989570a03f - core::fmt::rt::Argument::fmt::h686a01ad57c1c92a [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5f989570a03f - core::fmt::write::h8a63064c67176fd8 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/fmt/mod.rs:1469:25 [INFO] [stdout] 6: 0x5f98956c6983 - std::io::default_write_fmt::hd4797e693c0ec256 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5f98956c6983 - std::io::Write::write_fmt::h791e240ad2720c99 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5f98956d2b52 - std::sys::backtrace::BacktraceLock::print::h4634d27c0afbaebb [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5f98956d769f - std::panicking::default_hook::{{closure}}::h23e0299d4738b766 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5f98956d7531 - std::panicking::default_hook::hfeec6294e8751b62 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x5f989556b90e - as core::ops::function::Fn>::call::h3f5a16438cee2b4e [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9 [INFO] [stdout] 12: 0x5f989556b90e - test::test_main_with_exit_callback::{{closure}}::h9214498cef9aafc5 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5f98956d7caf - as core::ops::function::Fn>::call::hdb18da3e68df7464 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2019:9 [INFO] [stdout] 14: 0x5f98956d7caf - std::panicking::panic_with_hook::hd57cd463d793ed79 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x5f98956d7b0a - std::panicking::panic_handler::{{closure}}::hddd6216c3fddee3b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x5f98956d2c89 - std::sys::backtrace::__rust_end_short_backtrace::h5e7a56f283378525 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x5f98956baf7d - __rustc[256c90bb7e548b45]::rust_begin_unwind [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x5f98957123c0 - core::panicking::panic_fmt::hf19c198748ef6a95 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x5f98957117c6 - core::result::unwrap_failed::he81173b5792ad6b0 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/result.rs:1862:5 [INFO] [stdout] 20: 0x5f9895542a58 - core::result::Result::unwrap::h9585da44c76e27b1 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x5f9895542a58 - rustlings::exercise::test::test_exercise_with_output::hcdcd7dd07839ea43 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:38 [INFO] [stdout] 22: 0x5f9895542cd7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h210fe1c9b5aa36e8 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x5f989553a036 - core::ops::function::FnOnce::call_once::hb9e7c4ffc27f7865 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5f989556b75b - core::ops::function::FnOnce::call_once::h43f43c5185cf39c2 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5f989556b75b - test::__rust_begin_short_backtrace::hc4fa634eb2764bdc [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x5f989557fd78 - test::run_test_in_process::{{closure}}::h9f4b799a5211b72a [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x5f989557fd78 - as core::ops::function::FnOnce<()>>::call_once::ha572bf7dc5230a8f [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x5f989557fd78 - std::panicking::catch_unwind::do_call::hfd6ff51f25dd177b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x5f989557fd78 - std::panicking::catch_unwind::h8609b446221def5f [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x5f989557fd78 - std::panic::catch_unwind::h362f73cc48531e26 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5f989557fd78 - test::run_test_in_process::hf52fd21d696aae67 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x5f989557fd78 - test::run_test::{{closure}}::h7e780b8354e6d007 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x5f9895558b44 - test::run_test::{{closure}}::hdc2695f2276aad3e [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x5f9895558b44 - std::sys::backtrace::__rust_begin_short_backtrace::h2555b2113ed90fc9 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x5f989555c47a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h99800d480987dfb6 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:562:17 [INFO] [stdout] 36: 0x5f989555c47a - as core::ops::function::FnOnce<()>>::call_once::hbbb69b5294b2221b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x5f989555c47a - std::panicking::catch_unwind::do_call::h495689350c27df20 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x5f989555c47a - std::panicking::catch_unwind::hf22437c51d1b3740 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x5f989555c47a - std::panic::catch_unwind::habda1a57de8231f8 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5f989555c47a - std::thread::Builder::spawn_unchecked_::{{closure}}::h5833d8dda8c7e80b [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/thread/mod.rs:560:30 [INFO] [stdout] 41: 0x5f989555c47a - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha2910283a5058402 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5f98956cde9f - as core::ops::function::FnOnce>::call_once::he4d85cb537521972 [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/alloc/src/boxed.rs:2005:9 [INFO] [stdout] 43: 0x5f98956cde9f - std::sys::thread::unix::Thread::new::thread_start::hbaf586a9e50a98cd [INFO] [stdout] at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 44: 0x777e37114aa4 - [INFO] [stdout] 45: 0x777e371a1a64 - clone [INFO] [stdout] 46: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] exercise::test::test_clean [INFO] [stdout] exercise::test::test_exercise_with_output [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "7340ac80981a2a277f422006888338b8edd7e46bce26ec9c841a0d5b58234bc4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7340ac80981a2a277f422006888338b8edd7e46bce26ec9c841a0d5b58234bc4", kill_on_drop: false }` [INFO] [stdout] 7340ac80981a2a277f422006888338b8edd7e46bce26ec9c841a0d5b58234bc4