[INFO] cloning repository https://github.com/MKras/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MKras/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMKras%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMKras%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 19978000843b138ef7dc35cd1a4c8feada613712 [INFO] testing MKras/rustlings against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMKras%2Frustlings" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MKras/rustlings on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/MKras/rustlings [INFO] finished tweaking git repo https://github.com/MKras/rustlings [INFO] tweaked toml for git repo https://github.com/MKras/rustlings written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/MKras/rustlings already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0d78fa0095c1538042e84b4422687ad9527868c6658c71299f6d24b586122a3d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "0d78fa0095c1538042e84b4422687ad9527868c6658c71299f6d24b586122a3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0d78fa0095c1538042e84b4422687ad9527868c6658c71299f6d24b586122a3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0d78fa0095c1538042e84b4422687ad9527868c6658c71299f6d24b586122a3d", kill_on_drop: false }` [INFO] [stdout] 0d78fa0095c1538042e84b4422687ad9527868c6658c71299f6d24b586122a3d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b25da059611c6a122a2c3abb4fc95c04bdd90564d963eb0c2b86b5d796d33275 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b25da059611c6a122a2c3abb4fc95c04bdd90564d963eb0c2b86b5d796d33275", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.58 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling regex v1.1.6 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Compiling smallvec v0.6.9 [INFO] [stderr] Compiling unicode-width v0.1.5 [INFO] [stderr] Compiling utf8-ranges v1.0.2 [INFO] [stderr] Compiling bitflags v1.0.4 [INFO] [stderr] Compiling serde v1.0.92 [INFO] [stderr] Compiling same-file v1.0.4 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling regex-syntax v0.6.6 [INFO] [stderr] Compiling log v0.4.6 [INFO] [stderr] Compiling regex-syntax v0.5.6 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling walkdir v2.2.7 [INFO] [stderr] Compiling aho-corasick v0.7.3 [INFO] [stderr] Compiling aho-corasick v0.6.10 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling atty v0.2.11 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling termios v0.3.1 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling inotify-sys v0.1.3 [INFO] [stderr] Compiling clicolors-control v1.0.0 [INFO] [stderr] Compiling filetime v0.2.5 [INFO] [stderr] Compiling clicolors-control v0.2.0 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling inotify v0.6.1 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Compiling mio-extras v2.0.5 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling notify v4.0.12 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Compiling serde_derive v1.0.92 [INFO] [stderr] Compiling console v0.7.5 [INFO] [stderr] Compiling console v0.6.2 [INFO] [stderr] Compiling indicatif v0.9.0 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v2.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 50s [INFO] running `Command { std: "docker" "inspect" "b25da059611c6a122a2c3abb4fc95c04bdd90564d963eb0c2b86b5d796d33275", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b25da059611c6a122a2c3abb4fc95c04bdd90564d963eb0c2b86b5d796d33275", kill_on_drop: false }` [INFO] [stdout] b25da059611c6a122a2c3abb4fc95c04bdd90564d963eb0c2b86b5d796d33275 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b8556d3498e3be8204c156d58dba48d33a5158f3b845f25dcc09a3c37a35ad05 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b8556d3498e3be8204c156d58dba48d33a5158f3b845f25dcc09a3c37a35ad05", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v0.2.8 [INFO] [stderr] Compiling predicates-core v1.0.0 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling normalize-line-endings v0.2.2 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling predicates-tree v1.0.0 [INFO] [stderr] Compiling serde_json v1.0.39 [INFO] [stderr] Compiling float-cmp v0.4.0 [INFO] [stderr] Compiling predicates v1.0.1 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v2.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 20.77s [INFO] running `Command { std: "docker" "inspect" "b8556d3498e3be8204c156d58dba48d33a5158f3b845f25dcc09a3c37a35ad05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b8556d3498e3be8204c156d58dba48d33a5158f3b845f25dcc09a3c37a35ad05", kill_on_drop: false }` [INFO] [stdout] b8556d3498e3be8204c156d58dba48d33a5158f3b845f25dcc09a3c37a35ad05 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7ba6f5df7dab4ed7064ab2f6748df0e4f8a5d73e4cbb73e79dcd5155975033b2 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "7ba6f5df7dab4ed7064ab2f6748df0e4f8a5d73e4cbb73e79dcd5155975033b2", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.14s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rustlings-aa00bbe0b496bf21 [INFO] [stdout] [INFO] [stdout] running 3 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] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_clean stdout ---- [INFO] [stdout] thread 'exercise::test::test_clean' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/exercise.rs:131:36 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5560f985bac0 - std::backtrace_rs::backtrace::libunwind::trace::h95fc93571932622e [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stdout] 1: 0x5560f985bac0 - std::backtrace_rs::backtrace::trace_unsynchronized::h4d0b90afc33151fd [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x5560f985bac0 - std::sys_common::backtrace::_print_fmt::h93d302d001a3bf01 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x5560f985bac0 - ::fmt::h7881e3a580134f9a [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x5560f987fbcc - core::fmt::write::h1857a60b204f1b6a [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/fmt/mod.rs:1078:17 [INFO] [stdout] 5: 0x5560f9857eb2 - std::io::Write::write_fmt::hd17811b9a5dec54b [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/io/mod.rs:1519:15 [INFO] [stdout] 6: 0x5560f985e2f5 - std::sys_common::backtrace::_print::h3e3f9fed81bc11e9 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 7: 0x5560f985e2f5 - std::sys_common::backtrace::print::hd22ac23fed5071c8 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 8: 0x5560f985e2f5 - std::panicking::default_hook::{{closure}}::h1647bdcf68060e17 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:208:50 [INFO] [stdout] 9: 0x5560f985de82 - std::panicking::default_hook::hb08853b392b9404b [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:222:9 [INFO] [stdout] 10: 0x5560f985ea91 - std::panicking::rust_panic_with_hook::h3624ee29da369ede [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:591:17 [INFO] [stdout] 11: 0x5560f985e5d7 - std::panicking::begin_panic_handler::{{closure}}::hefcfcedcde6bb6d9 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:497:13 [INFO] [stdout] 12: 0x5560f985bf7c - std::sys_common::backtrace::__rust_end_short_backtrace::heb130cec93caa706 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stdout] 13: 0x5560f985e539 - rust_begin_unwind [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:493:5 [INFO] [stdout] 14: 0x5560f987e551 - core::panicking::panic_fmt::hb15d6f55e8472f62 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/panicking.rs:92:14 [INFO] [stdout] 15: 0x5560f987e373 - core::option::expect_none_failed::he492a18657d97593 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/option.rs:1268:5 [INFO] [stdout] 16: 0x5560f967c5cb - core::result::Result::unwrap::hec5e30c2432fadbc [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/result.rs:973:23 [INFO] [stdout] 17: 0x5560f9678133 - rustlings::exercise::test::test_clean::hf8a85ac017737b65 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:131:9 [INFO] [stdout] 18: 0x5560f96780ea - rustlings::exercise::test::test_clean::{{closure}}::hd12e77151239d676 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:130:5 [INFO] [stdout] 19: 0x5560f967b20e - core::ops::function::FnOnce::call_once::hdb4d7b10cd9945fc [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 20: 0x5560f96a40e3 - core::ops::function::FnOnce::call_once::h72b3efc134abec04 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 21: 0x5560f96a40e3 - test::__rust_begin_short_backtrace::hf76173a3f44f554b [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/test/src/lib.rs:516:5 [INFO] [stdout] 22: 0x5560f96a27d8 - as core::ops::function::FnOnce>::call_once::h49f5b686efed1e06 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/alloc/src/boxed.rs:1318:9 [INFO] [stdout] 23: 0x5560f96a27d8 - as core::ops::function::FnOnce<()>>::call_once::h4879f836ca9aaead [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panic.rs:322:9 [INFO] [stdout] 24: 0x5560f96a27d8 - std::panicking::try::do_call::h9655796ce3021b6c [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:379:40 [INFO] [stdout] 25: 0x5560f96a27d8 - std::panicking::try::h346508ed448399f4 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:343:19 [INFO] [stdout] 26: 0x5560f96a27d8 - std::panic::catch_unwind::h00e84f4e9c3caaa0 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panic.rs:396:14 [INFO] [stdout] 27: 0x5560f96a27d8 - test::run_test_in_process::hc80321f825c30106 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/test/src/lib.rs:538:18 [INFO] [stdout] 28: 0x5560f96a27d8 - test::run_test::run_test_inner::{{closure}}::h89c217441620999f [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/test/src/lib.rs:449:39 [INFO] [stdout] 29: 0x5560f967cdc6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3852ec0877008db6 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stdout] 30: 0x5560f968158d - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h7c7dfff4b938ae67 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/thread/mod.rs:474:17 [INFO] [stdout] 31: 0x5560f968158d - as core::ops::function::FnOnce<()>>::call_once::h8db0dd15c072a403 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panic.rs:322:9 [INFO] [stdout] 32: 0x5560f968158d - std::panicking::try::do_call::haad8639857ae1187 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:379:40 [INFO] [stdout] 33: 0x5560f968158d - std::panicking::try::h61de115e9dce60f6 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panicking.rs:343:19 [INFO] [stdout] 34: 0x5560f968158d - std::panic::catch_unwind::h50601fd82666a838 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/panic.rs:396:14 [INFO] [stdout] 35: 0x5560f968158d - std::thread::Builder::spawn_unchecked::{{closure}}::hac267391ef9d21bd [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/thread/mod.rs:473:30 [INFO] [stdout] 36: 0x5560f968158d - core::ops::function::FnOnce::call_once{{vtable.shim}}::heb15d2d9c42706b7 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 37: 0x5560f98645da - as core::ops::function::FnOnce>::call_once::h5446ed3fdb82006e [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/alloc/src/boxed.rs:1318:9 [INFO] [stdout] 38: 0x5560f98645da - as core::ops::function::FnOnce>::call_once::h62a21a889329a3f2 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/alloc/src/boxed.rs:1318:9 [INFO] [stdout] 39: 0x5560f98645da - std::sys::unix::thread::Thread::new::thread_start::h62402416daf174b6 [INFO] [stdout] at /rustc/5d5ff84130da0d74c6ece368dbe821d8f83fa526/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stdout] 40: 0x7f944dd48609 - start_thread [INFO] [stdout] 41: 0x7f944de9f293 - clone [INFO] [stdout] 42: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] exercise::test::test_clean [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--bin rustlings' [INFO] running `Command { std: "docker" "inspect" "7ba6f5df7dab4ed7064ab2f6748df0e4f8a5d73e4cbb73e79dcd5155975033b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7ba6f5df7dab4ed7064ab2f6748df0e4f8a5d73e4cbb73e79dcd5155975033b2", kill_on_drop: false }` [INFO] [stdout] 7ba6f5df7dab4ed7064ab2f6748df0e4f8a5d73e4cbb73e79dcd5155975033b2