[INFO] cloning repository https://github.com/cicvedu/rust-rustlings-nieyifei [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cicvedu/rust-rustlings-nieyifei" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-nieyifei", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-nieyifei'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] bd73a12c7999fc4dee293e0694529d0c62033f91 [INFO] testing cicvedu/rust-rustlings-nieyifei/bd73a12c7999fc4dee293e0694529d0c62033f91 against master#ff2c56344c764af598ad33027e9c7a48881808ef for pr-118825 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-nieyifei" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cicvedu/rust-rustlings-nieyifei on toolchain ff2c56344c764af598ad33027e9c7a48881808ef [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/cicvedu/rust-rustlings-nieyifei [INFO] finished tweaking git repo https://github.com/cicvedu/rust-rustlings-nieyifei [INFO] tweaked toml for git repo https://github.com/cicvedu/rust-rustlings-nieyifei written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/cicvedu/rust-rustlings-nieyifei 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" "+ff2c56344c764af598ad33027e9c7a48881808ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 85b9728f90918d1c023b6d2477eb394a4e07463ebf945e80370b73b05ea7c8b5 [INFO] running `Command { std: "docker" "start" "-a" "85b9728f90918d1c023b6d2477eb394a4e07463ebf945e80370b73b05ea7c8b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "85b9728f90918d1c023b6d2477eb394a4e07463ebf945e80370b73b05ea7c8b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "85b9728f90918d1c023b6d2477eb394a4e07463ebf945e80370b73b05ea7c8b5", kill_on_drop: false }` [INFO] [stdout] 85b9728f90918d1c023b6d2477eb394a4e07463ebf945e80370b73b05ea7c8b5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c9c5ebcf6b3c4b6e61a306187d7b3db2ee2a70733936edf444de4a504a730c6f [INFO] running `Command { std: "docker" "start" "-a" "c9c5ebcf6b3c4b6e61a306187d7b3db2ee2a70733936edf444de4a504a730c6f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Compiling proc-macro2 v1.0.64 [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 parking_lot_core v0.9.8 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling serde v1.0.171 [INFO] [stderr] Compiling regex-syntax v0.7.4 [INFO] [stderr] Compiling scopeguard v1.2.0 [INFO] [stderr] Compiling slab v0.4.8 [INFO] [stderr] Compiling lock_api v0.4.10 [INFO] [stderr] Compiling log v0.4.19 [INFO] [stderr] Compiling smallvec v1.11.0 [INFO] [stderr] Compiling tokio v1.29.1 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling serde_json v1.0.102 [INFO] [stderr] Compiling unicode-width v0.1.10 [INFO] [stderr] Compiling argh_shared v0.1.10 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling walkdir v2.3.3 [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 itoa v1.0.8 [INFO] [stderr] Compiling glob v0.3.1 [INFO] [stderr] Compiling home v0.5.5 [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 filetime v0.2.21 [INFO] [stderr] Compiling signal-hook-registry v1.4.1 [INFO] [stderr] Compiling num_cpus v1.16.0 [INFO] [stderr] Compiling socket2 v0.4.9 [INFO] [stderr] Compiling mio v0.8.8 [INFO] [stderr] Compiling console v0.15.7 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling syn v2.0.25 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex-automata v0.3.3 [INFO] [stderr] Compiling argh_derive v0.1.10 [INFO] [stderr] Compiling regex v1.9.1 [INFO] [stderr] Compiling indicatif v0.16.2 [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 toml v0.5.11 [INFO] [stderr] Compiling rustlings v5.5.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 15.34s [INFO] running `Command { std: "docker" "inspect" "c9c5ebcf6b3c4b6e61a306187d7b3db2ee2a70733936edf444de4a504a730c6f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9c5ebcf6b3c4b6e61a306187d7b3db2ee2a70733936edf444de4a504a730c6f", kill_on_drop: false }` [INFO] [stdout] c9c5ebcf6b3c4b6e61a306187d7b3db2ee2a70733936edf444de4a504a730c6f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3c6cd351ece176c1fdab5cf54fd12601da05ed6d14f2a96276d98f752a9b0607 [INFO] running `Command { std: "docker" "start" "-a" "3c6cd351ece176c1fdab5cf54fd12601da05ed6d14f2a96276d98f752a9b0607", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.6 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling termtree v0.4.1 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [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] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.73s [INFO] running `Command { std: "docker" "inspect" "3c6cd351ece176c1fdab5cf54fd12601da05ed6d14f2a96276d98f752a9b0607", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3c6cd351ece176c1fdab5cf54fd12601da05ed6d14f2a96276d98f752a9b0607", kill_on_drop: false }` [INFO] [stdout] 3c6cd351ece176c1fdab5cf54fd12601da05ed6d14f2a96276d98f752a9b0607 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d419c6f58fa53a4363438c55c462842f0bc4a57ef524a6b6cc944204ac2d20c0 [INFO] running `Command { std: "docker" "start" "-a" "d419c6f58fa53a4363438c55c462842f0bc4a57ef524a6b6cc944204ac2d20c0", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-8125660d8320ed7a) [INFO] [stdout] [INFO] [stdout] running 4 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] test exercise::test::test_exercise_with_output ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_clean stdout ---- [INFO] [stdout] thread 'exercise::test::test_clean' 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: 0x55acc21e9ffc - std::backtrace_rs::backtrace::libunwind::trace::h03859d238dbdd93c [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55acc21e9ffc - std::backtrace_rs::backtrace::trace_unsynchronized::h2e251246e2581a42 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55acc21e9ffc - std::sys_common::backtrace::_print_fmt::h5baa2f175792666a [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55acc21e9ffc - ::fmt::h00d759009813d8ca [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55acc2214270 - core::fmt::rt::Argument::fmt::hcd158635f297e549 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55acc2214270 - core::fmt::write::h9c5087e04fe38018 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55acc21e7a1f - std::io::Write::write_fmt::h34541c3dfc0362f2 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/io/mod.rs:1810:15 [INFO] [stdout] 7: 0x55acc21e9de4 - std::sys_common::backtrace::_print::h25969b404f42f4bb [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55acc21e9de4 - std::sys_common::backtrace::print::h68d3414e8c63fb83 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55acc21ebb17 - std::panicking::default_hook::{{closure}}::hccfef51edabebb9a [INFO] [stdout] 10: 0x55acc21eb803 - std::panicking::default_hook::hdec7a4759fa427e8 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55acc1f6e3b7 - as core::ops::function::Fn>::call::h6770dc7dbbc843da [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 12: 0x55acc1f6e3b7 - test::test_main::{{closure}}::h037f0e9a244755ad [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:138:21 [INFO] [stdout] 13: 0x55acc21ec128 - as core::ops::function::Fn>::call::h284e61fdb096ca02 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 14: 0x55acc21ec128 - std::panicking::rust_panic_with_hook::h9d502a4da1912fba [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:783:13 [INFO] [stdout] 15: 0x55acc21ebe7e - std::panicking::begin_panic_handler::{{closure}}::h3a68181f2e6a785b [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:657:13 [INFO] [stdout] 16: 0x55acc21ea4c6 - std::sys_common::backtrace::__rust_end_short_backtrace::hc1d088e8c1328911 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55acc21ebbe2 - rust_begin_unwind [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:645:5 [INFO] [stdout] 18: 0x55acc1f23345 - core::panicking::panic_fmt::h15511a438b78bb2f [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55acc1f23933 - core::result::unwrap_failed::h2bdebd1f35b594af [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/result.rs:1649:5 [INFO] [stdout] 20: 0x55acc1f263fb - core::result::Result::unwrap::h0bcd953145c2092f [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/result.rs:1073:23 [INFO] [stdout] 21: 0x55acc1f2f3b1 - rustlings::exercise::test::test_clean::h660ccd4b9deaf726 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:303:9 [INFO] [stdout] 22: 0x55acc1f2f337 - rustlings::exercise::test::test_clean::{{closure}}::h5766a5bbd7e3732f [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:302:20 [INFO] [stdout] 23: 0x55acc1f24c66 - core::ops::function::FnOnce::call_once::hab1cae353e90eb95 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55acc1f73aaf - core::ops::function::FnOnce::call_once::h0dce7fb8ca7c533f [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55acc1f73aaf - test::__rust_begin_short_backtrace::h75b023f3061039b8 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:627:18 [INFO] [stdout] 26: 0x55acc1f72a25 - test::run_test_in_process::{{closure}}::hb995e3036449b1d2 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:650:60 [INFO] [stdout] 27: 0x55acc1f72a25 - as core::ops::function::FnOnce<()>>::call_once::h63d3d9d9e7447cac [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55acc1f72a25 - std::panicking::try::do_call::hf358e48b8451abe8 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:552:40 [INFO] [stdout] 29: 0x55acc1f72a25 - std::panicking::try::hdfb727124dd74530 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:516:19 [INFO] [stdout] 30: 0x55acc1f72a25 - std::panic::catch_unwind::h384458a7c85f353a [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55acc1f72a25 - test::run_test_in_process::h2b217e4014561d06 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:650:27 [INFO] [stdout] 32: 0x55acc1f72a25 - test::run_test::{{closure}}::h2b7f88f2ebf46b48 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:573:43 [INFO] [stdout] 33: 0x55acc1f3ac66 - test::run_test::{{closure}}::h320ebf4a972a385e [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:601:41 [INFO] [stdout] 34: 0x55acc1f3ac66 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3ed64afcc71df931 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55acc1f3fe47 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hb4c68cb7b0f88b9d [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/thread/mod.rs:529:17 [INFO] [stdout] 36: 0x55acc1f3fe47 - as core::ops::function::FnOnce<()>>::call_once::h2a26cae7fae50093 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55acc1f3fe47 - std::panicking::try::do_call::h24f674b7fb619491 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:552:40 [INFO] [stdout] 38: 0x55acc1f3fe47 - std::panicking::try::h7f5877eebc0c4325 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:516:19 [INFO] [stdout] 39: 0x55acc1f3fe47 - std::panic::catch_unwind::h91815042a13af893 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55acc1f3fe47 - std::thread::Builder::spawn_unchecked_::{{closure}}::h5f5155c83af4a50e [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/thread/mod.rs:528:30 [INFO] [stdout] 41: 0x55acc1f3fe47 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h5d62a6061c9ba69b [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55acc21f0d25 - as core::ops::function::FnOnce>::call_once::h861fc3b698de2ffb [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 43: 0x55acc21f0d25 - as core::ops::function::FnOnce>::call_once::hc66d40344bf1789e [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 44: 0x55acc21f0d25 - std::sys::unix::thread::Thread::new::thread_start::h425b008cdc0113be [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f8d1cfd1ac3 - [INFO] [stdout] 46: 0x7f8d1d062bf4 - __clone [INFO] [stdout] 47: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at src/exercise.rs:376:38: [INFO] [stdout] called `Result::unwrap()` on an `Err` value: ExerciseOutput { stdout: "", stderr: "\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: couldn't create a temp dir: Read-only file system (os error 30) at path \"/opt/rustwide/workdir/./rmetaEYX29v\"\u{1b}[0m\n\n\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: aborting due to 1 previous error\u{1b}[0m\n\n" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55acc21e9ffc - std::backtrace_rs::backtrace::libunwind::trace::h03859d238dbdd93c [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55acc21e9ffc - std::backtrace_rs::backtrace::trace_unsynchronized::h2e251246e2581a42 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55acc21e9ffc - std::sys_common::backtrace::_print_fmt::h5baa2f175792666a [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55acc21e9ffc - ::fmt::h00d759009813d8ca [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55acc2214270 - core::fmt::rt::Argument::fmt::hcd158635f297e549 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55acc2214270 - core::fmt::write::h9c5087e04fe38018 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55acc21e7a1f - std::io::Write::write_fmt::h34541c3dfc0362f2 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/io/mod.rs:1810:15 [INFO] [stdout] 7: 0x55acc21e9de4 - std::sys_common::backtrace::_print::h25969b404f42f4bb [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55acc21e9de4 - std::sys_common::backtrace::print::h68d3414e8c63fb83 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55acc21ebb17 - std::panicking::default_hook::{{closure}}::hccfef51edabebb9a [INFO] [stdout] 10: 0x55acc21eb803 - std::panicking::default_hook::hdec7a4759fa427e8 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55acc1f6e3b7 - as core::ops::function::Fn>::call::h6770dc7dbbc843da [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 12: 0x55acc1f6e3b7 - test::test_main::{{closure}}::h037f0e9a244755ad [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:138:21 [INFO] [stdout] 13: 0x55acc21ec128 - as core::ops::function::Fn>::call::h284e61fdb096ca02 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 14: 0x55acc21ec128 - std::panicking::rust_panic_with_hook::h9d502a4da1912fba [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:783:13 [INFO] [stdout] 15: 0x55acc21ebe7e - std::panicking::begin_panic_handler::{{closure}}::h3a68181f2e6a785b [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:657:13 [INFO] [stdout] 16: 0x55acc21ea4c6 - std::sys_common::backtrace::__rust_end_short_backtrace::hc1d088e8c1328911 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55acc21ebbe2 - rust_begin_unwind [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:645:5 [INFO] [stdout] 18: 0x55acc1f23345 - core::panicking::panic_fmt::h15511a438b78bb2f [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55acc1f23933 - core::result::unwrap_failed::h2bdebd1f35b594af [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/result.rs:1649:5 [INFO] [stdout] 20: 0x55acc1f264bb - core::result::Result::unwrap::h2a2432430a7be1b2 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/result.rs:1073:23 [INFO] [stdout] 21: 0x55acc1f300ac - rustlings::exercise::test::test_exercise_with_output::hde996a0e08cbf73b [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:376:19 [INFO] [stdout] 22: 0x55acc1f2ff47 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h73cff641f1836762 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:369:35 [INFO] [stdout] 23: 0x55acc1f24c26 - core::ops::function::FnOnce::call_once::h6c127b5157976705 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55acc1f73aaf - core::ops::function::FnOnce::call_once::h0dce7fb8ca7c533f [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55acc1f73aaf - test::__rust_begin_short_backtrace::h75b023f3061039b8 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:627:18 [INFO] [stdout] 26: 0x55acc1f72a25 - test::run_test_in_process::{{closure}}::hb995e3036449b1d2 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:650:60 [INFO] [stdout] 27: 0x55acc1f72a25 - as core::ops::function::FnOnce<()>>::call_once::h63d3d9d9e7447cac [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55acc1f72a25 - std::panicking::try::do_call::hf358e48b8451abe8 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:552:40 [INFO] [stdout] 29: 0x55acc1f72a25 - std::panicking::try::hdfb727124dd74530 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:516:19 [INFO] [stdout] 30: 0x55acc1f72a25 - std::panic::catch_unwind::h384458a7c85f353a [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55acc1f72a25 - test::run_test_in_process::h2b217e4014561d06 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:650:27 [INFO] [stdout] 32: 0x55acc1f72a25 - test::run_test::{{closure}}::h2b7f88f2ebf46b48 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:573:43 [INFO] [stdout] 33: 0x55acc1f3ac66 - test::run_test::{{closure}}::h320ebf4a972a385e [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/test/src/lib.rs:601:41 [INFO] [stdout] 34: 0x55acc1f3ac66 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3ed64afcc71df931 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55acc1f3fe47 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hb4c68cb7b0f88b9d [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/thread/mod.rs:529:17 [INFO] [stdout] 36: 0x55acc1f3fe47 - as core::ops::function::FnOnce<()>>::call_once::h2a26cae7fae50093 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55acc1f3fe47 - std::panicking::try::do_call::h24f674b7fb619491 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:552:40 [INFO] [stdout] 38: 0x55acc1f3fe47 - std::panicking::try::h7f5877eebc0c4325 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panicking.rs:516:19 [INFO] [stdout] 39: 0x55acc1f3fe47 - std::panic::catch_unwind::h91815042a13af893 [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55acc1f3fe47 - std::thread::Builder::spawn_unchecked_::{{closure}}::h5f5155c83af4a50e [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/thread/mod.rs:528:30 [INFO] [stdout] 41: 0x55acc1f3fe47 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h5d62a6061c9ba69b [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55acc21f0d25 - as core::ops::function::FnOnce>::call_once::h861fc3b698de2ffb [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 43: 0x55acc21f0d25 - as core::ops::function::FnOnce>::call_once::hc66d40344bf1789e [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 44: 0x55acc21f0d25 - std::sys::unix::thread::Thread::new::thread_start::h425b008cdc0113be [INFO] [stdout] at /rustc/ff2c56344c764af598ad33027e9c7a48881808ef/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f8d1cfd1ac3 - [INFO] [stdout] 46: 0x7f8d1d062bf4 - __clone [INFO] [stdout] 47: 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 0.06s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "d419c6f58fa53a4363438c55c462842f0bc4a57ef524a6b6cc944204ac2d20c0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d419c6f58fa53a4363438c55c462842f0bc4a57ef524a6b6cc944204ac2d20c0", kill_on_drop: false }` [INFO] [stdout] d419c6f58fa53a4363438c55c462842f0bc4a57ef524a6b6cc944204ac2d20c0