[INFO] cloning repository https://github.com/vrbala/rust_solutions [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vrbala/rust_solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvrbala%2Frust_solutions", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvrbala%2Frust_solutions'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 414b3f2a1c68b9f17cf092a2a6507414655daede [INFO] testing vrbala/rust_solutions against beta-2021-01-01 for beta-1.50-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvrbala%2Frust_solutions" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/vrbala/rust_solutions on toolchain beta-2021-01-01 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/vrbala/rust_solutions [INFO] finished tweaking git repo https://github.com/vrbala/rust_solutions [INFO] tweaked toml for git repo https://github.com/vrbala/rust_solutions written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/vrbala/rust_solutions already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded predicates-tree v1.0.1 [INFO] [stderr] Downloaded predicates-core v1.0.1 [INFO] [stderr] Downloaded predicates v1.0.6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5e398e397f813408e26f0b7185c88da8f95d29a792d50434510d1d14e6dd27be [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" "5e398e397f813408e26f0b7185c88da8f95d29a792d50434510d1d14e6dd27be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5e398e397f813408e26f0b7185c88da8f95d29a792d50434510d1d14e6dd27be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5e398e397f813408e26f0b7185c88da8f95d29a792d50434510d1d14e6dd27be", kill_on_drop: false }` [INFO] [stdout] 5e398e397f813408e26f0b7185c88da8f95d29a792d50434510d1d14e6dd27be [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 726b06f336b92722e65bdaa95d2868e348822683c031c6577fec21cbb7bd45e6 [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" "726b06f336b92722e65bdaa95d2868e348822683c031c6577fec21cbb7bd45e6", kill_on_drop: false }` [INFO] [stderr] Compiling parking_lot_core v0.8.2 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling terminal_size v0.1.15 [INFO] [stderr] Compiling inotify-sys v0.1.4 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling filetime v0.2.13 [INFO] [stderr] Compiling termios v0.3.3 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling console v0.14.0 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.15 [INFO] [stderr] Compiling rustlings v3.0.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 27.99s [INFO] running `Command { std: "docker" "inspect" "726b06f336b92722e65bdaa95d2868e348822683c031c6577fec21cbb7bd45e6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "726b06f336b92722e65bdaa95d2868e348822683c031c6577fec21cbb7bd45e6", kill_on_drop: false }` [INFO] [stdout] 726b06f336b92722e65bdaa95d2868e348822683c031c6577fec21cbb7bd45e6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ca97b01f5d4c7e94f5e2e7e70f5252a0b9bee0afa54eb52c82f5aff3f8b68db3 [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" "ca97b01f5d4c7e94f5e2e7e70f5252a0b9bee0afa54eb52c82f5aff3f8b68db3", kill_on_drop: false }` [INFO] [stderr] Compiling predicates-core v1.0.1 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling serde_json v1.0.61 [INFO] [stderr] Compiling predicates v1.0.6 [INFO] [stderr] Compiling predicates-tree v1.0.1 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v3.0.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 15.35s [INFO] running `Command { std: "docker" "inspect" "ca97b01f5d4c7e94f5e2e7e70f5252a0b9bee0afa54eb52c82f5aff3f8b68db3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ca97b01f5d4c7e94f5e2e7e70f5252a0b9bee0afa54eb52c82f5aff3f8b68db3", kill_on_drop: false }` [INFO] [stdout] ca97b01f5d4c7e94f5e2e7e70f5252a0b9bee0afa54eb52c82f5aff3f8b68db3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b119dfe77f5282241bb18c8652643d2f21b4ec3e51d355b264b462cfa672c15d [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" "b119dfe77f5282241bb18c8652643d2f21b4ec3e51d355b264b462cfa672c15d", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.40s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rustlings-cd9bef9c9ae839e3 [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test exercise::test::test_finished_exercise ... ok [INFO] [stdout] test exercise::test::test_pending_state ... 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:219:36 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55e60ba3a8d7 - std::backtrace_rs::backtrace::libunwind::trace::hcd6e187547b8deec [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stdout] 1: 0x55e60ba3a8d7 - std::backtrace_rs::backtrace::trace_unsynchronized::hde10036eb783fbc7 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55e60ba3a8d7 - std::sys_common::backtrace::_print_fmt::h63987b8f86dfc82a [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stdout] 3: 0x55e60ba3a8d7 - ::fmt::hc33f3ac4cc9c4196 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stdout] 4: 0x55e60ba5b23c - core::fmt::write::hfdcdeb08fb2b3afa [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/fmt/mod.rs:1078:17 [INFO] [stdout] 5: 0x55e60ba36c92 - std::io::Write::write_fmt::h28c53dc51251a293 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/io/mod.rs:1519:15 [INFO] [stdout] 6: 0x55e60ba3cb85 - std::sys_common::backtrace::_print::hf179508b01f66878 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stdout] 7: 0x55e60ba3cb85 - std::sys_common::backtrace::print::ha97d11adb39266a6 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stdout] 8: 0x55e60ba3cb85 - std::panicking::default_hook::{{closure}}::h8da9985a98bd1582 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:208:50 [INFO] [stdout] 9: 0x55e60ba3c712 - std::panicking::default_hook::hbc0ee792993c2ef2 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:222:9 [INFO] [stdout] 10: 0x55e60ba3d321 - std::panicking::rust_panic_with_hook::h9fb9cda33a10f084 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:591:17 [INFO] [stdout] 11: 0x55e60ba3ce67 - std::panicking::begin_panic_handler::{{closure}}::hf3e83396e085962e [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:497:13 [INFO] [stdout] 12: 0x55e60ba3ad9c - std::sys_common::backtrace::__rust_end_short_backtrace::hac151ac4c1e3252d [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stdout] 13: 0x55e60ba3cdc9 - rust_begin_unwind [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:493:5 [INFO] [stdout] 14: 0x55e60ba59bf1 - core::panicking::panic_fmt::hf6d8a92b065b8f97 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/panicking.rs:92:14 [INFO] [stdout] 15: 0x55e60ba59a13 - core::option::expect_none_failed::ha72f299eca314ad7 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/option.rs:1268:5 [INFO] [stdout] 16: 0x55e60b824a3b - core::result::Result::unwrap::h31adacb12413f1bf [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/result.rs:973:23 [INFO] [stdout] 17: 0x55e60b82eed3 - rustlings::exercise::test::test_clean::h9093664292eff38a [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:219:9 [INFO] [stdout] 18: 0x55e60b82ee8a - rustlings::exercise::test::test_clean::{{closure}}::h2134a8fb14676c42 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:218:5 [INFO] [stdout] 19: 0x55e60b82580e - core::ops::function::FnOnce::call_once::h7e2fc388d6ce98d6 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 20: 0x55e60b85b2b3 - core::ops::function::FnOnce::call_once::ha61d5393ae51ae22 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 21: 0x55e60b85b2b3 - test::__rust_begin_short_backtrace::h4a8691b5281c1f3b [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/test/src/lib.rs:516:5 [INFO] [stdout] 22: 0x55e60b859ba6 - as core::ops::function::FnOnce>::call_once::hd25ba61494055ad3 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/alloc/src/boxed.rs:1328:9 [INFO] [stdout] 23: 0x55e60b859ba6 - as core::ops::function::FnOnce<()>>::call_once::h052fde7b846767ba [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panic.rs:322:9 [INFO] [stdout] 24: 0x55e60b859ba6 - std::panicking::try::do_call::h04571a1da6838ba1 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:379:40 [INFO] [stdout] 25: 0x55e60b859ba6 - std::panicking::try::h758f090614125cbe [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:343:19 [INFO] [stdout] 26: 0x55e60b859ba6 - std::panic::catch_unwind::h0c48513d5a021d3c [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panic.rs:396:14 [INFO] [stdout] 27: 0x55e60b859ba6 - test::run_test_in_process::hee75babaaac3822f [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/test/src/lib.rs:538:18 [INFO] [stdout] 28: 0x55e60b859ba6 - test::run_test::run_test_inner::{{closure}}::h2920dea75d7f0c1e [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/test/src/lib.rs:449:39 [INFO] [stdout] 29: 0x55e60b831eb6 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha23dff608830db13 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stdout] 30: 0x55e60b836c4d - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hacce322dead3a799 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/thread/mod.rs:474:17 [INFO] [stdout] 31: 0x55e60b836c4d - as core::ops::function::FnOnce<()>>::call_once::h4f0bc9c26ead0a27 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panic.rs:322:9 [INFO] [stdout] 32: 0x55e60b836c4d - std::panicking::try::do_call::h1b9f282fb0c383b3 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:379:40 [INFO] [stdout] 33: 0x55e60b836c4d - std::panicking::try::hed1ebed51b133ee4 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:343:19 [INFO] [stdout] 34: 0x55e60b836c4d - std::panic::catch_unwind::h072a2b19fd39a474 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panic.rs:396:14 [INFO] [stdout] 35: 0x55e60b836c4d - std::thread::Builder::spawn_unchecked::{{closure}}::hb02c6b2d3ff18bc2 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/thread/mod.rs:473:30 [INFO] [stdout] 36: 0x55e60b836c4d - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb512c5d27b4adb83 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:227:5 [INFO] [stdout] 37: 0x55e60ba4359a - as core::ops::function::FnOnce>::call_once::hdbb9ff71143eaad6 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/alloc/src/boxed.rs:1328:9 [INFO] [stdout] 38: 0x55e60ba4359a - as core::ops::function::FnOnce>::call_once::h9dbde95cefb8368c [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/alloc/src/boxed.rs:1328:9 [INFO] [stdout] 39: 0x55e60ba4359a - std::sys::unix::thread::Thread::new::thread_start::hc76032c38affd972 [INFO] [stdout] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys/unix/thread.rs:71:17 [INFO] [stdout] 40: 0x7fd91bd7d609 - start_thread [INFO] [stdout] 41: 0x7fd91bed4293 - 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; finished in 0.09s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--bin rustlings' [INFO] running `Command { std: "docker" "inspect" "b119dfe77f5282241bb18c8652643d2f21b4ec3e51d355b264b462cfa672c15d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b119dfe77f5282241bb18c8652643d2f21b4ec3e51d355b264b462cfa672c15d", kill_on_drop: false }` [INFO] [stdout] b119dfe77f5282241bb18c8652643d2f21b4ec3e51d355b264b462cfa672c15d