[INFO] cloning repository https://github.com/yenaras/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yenaras/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenaras%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenaras%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 78d601ab5dbe9c2a1f4c6dcdf12d8f52a45a1c04 [INFO] testing yenaras/rustlings against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenaras%2Frustlings" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yenaras/rustlings on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yenaras/rustlings [INFO] finished tweaking git repo https://github.com/yenaras/rustlings [INFO] tweaked toml for git repo https://github.com/yenaras/rustlings written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/yenaras/rustlings 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] afaae99e9c283ea6130ab20101221b3cfc1229191b256c3933cd0d55dabfc2ca [INFO] running `Command { std: "docker" "start" "-a" "afaae99e9c283ea6130ab20101221b3cfc1229191b256c3933cd0d55dabfc2ca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "afaae99e9c283ea6130ab20101221b3cfc1229191b256c3933cd0d55dabfc2ca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "afaae99e9c283ea6130ab20101221b3cfc1229191b256c3933cd0d55dabfc2ca", kill_on_drop: false }` [INFO] [stdout] afaae99e9c283ea6130ab20101221b3cfc1229191b256c3933cd0d55dabfc2ca [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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ae87604ae4cb6317618046dc359f6b89e258ff07e89374ed1ed492ccb73dbbaa [INFO] running `Command { std: "docker" "start" "-a" "ae87604ae4cb6317618046dc359f6b89e258ff07e89374ed1ed492ccb73dbbaa", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling instant v0.1.10 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [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 inotify v0.7.1 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling termios v0.3.3 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling console v0.14.1 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v4.6.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.94s [INFO] running `Command { std: "docker" "inspect" "ae87604ae4cb6317618046dc359f6b89e258ff07e89374ed1ed492ccb73dbbaa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ae87604ae4cb6317618046dc359f6b89e258ff07e89374ed1ed492ccb73dbbaa", kill_on_drop: false }` [INFO] [stdout] ae87604ae4cb6317618046dc359f6b89e258ff07e89374ed1ed492ccb73dbbaa [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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c8caf531181d2fec7bbf8e1d19bd1a1b189fa8ca239607054f0731c63035ef6e [INFO] running `Command { std: "docker" "start" "-a" "c8caf531181d2fec7bbf8e1d19bd1a1b189fa8ca239607054f0731c63035ef6e", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling glob v0.3.0 [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 v4.6.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 6.44s [INFO] running `Command { std: "docker" "inspect" "c8caf531181d2fec7bbf8e1d19bd1a1b189fa8ca239607054f0731c63035ef6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c8caf531181d2fec7bbf8e1d19bd1a1b189fa8ca239607054f0731c63035ef6e", kill_on_drop: false }` [INFO] [stdout] c8caf531181d2fec7bbf8e1d19bd1a1b189fa8ca239607054f0731c63035ef6e [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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 19b8b80f2a7b50a2582663849df5ceb76bb6eb737219b572b1cc6489c25ca3e6 [INFO] running `Command { std: "docker" "start" "-a" "19b8b80f2a7b50a2582663849df5ceb76bb6eb737219b572b1cc6489c25ca3e6", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-7a2ff846375d17dd) [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' panicked at src/exercise.rs:270:36: [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: 0x5d4f02a27302 - std::backtrace_rs::backtrace::libunwind::trace::h8d95625898284e7d [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5d4f02a27302 - std::backtrace_rs::backtrace::trace_unsynchronized::h9eafd5c61303e492 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5d4f02a27302 - std::sys::backtrace::_print_fmt::hec2578e807cc4a3f [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5d4f02a27302 - ::fmt::hd8ebefbbcb1fe23a [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5d4f02a4ee93 - core::fmt::rt::Argument::fmt::h09f3c4b7b5ff5386 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/fmt/rt.rs:185:76 [INFO] [stdout] 5: 0x5d4f02a4ee93 - core::fmt::write::hef9d041e1d5d9592 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/fmt/mod.rs:1449:21 [INFO] [stdout] 6: 0x5d4f02a23fd3 - std::io::Write::write_fmt::h7cfb9383e0a29362 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/io/mod.rs:1890:15 [INFO] [stdout] 7: 0x5d4f02a27152 - std::sys::backtrace::BacktraceLock::print::h263d323f217ce3a7 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x5d4f02a287aa - std::panicking::default_hook::{{closure}}::h25050253f7dc0d3e [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:298:22 [INFO] [stdout] 9: 0x5d4f02a28599 - std::panicking::default_hook::hf3291a4c87ea2887 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:322:9 [INFO] [stdout] 10: 0x5d4f028c4297 - as core::ops::function::Fn>::call::h51204ed24e282361 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 11: 0x5d4f028c4297 - test::test_main::{{closure}}::h3588678a150ab7c4 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:136:21 [INFO] [stdout] 12: 0x5d4f02a29293 - as core::ops::function::Fn>::call::h95d63edfac47e230 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 13: 0x5d4f02a29293 - std::panicking::rust_panic_with_hook::h3550dbeaa1041124 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:839:13 [INFO] [stdout] 14: 0x5d4f02a28f4a - std::panicking::begin_panic_handler::{{closure}}::hde0dd646a9e2b5b7 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:704:13 [INFO] [stdout] 15: 0x5d4f02a277f9 - std::sys::backtrace::__rust_end_short_backtrace::haeb22ba48b4d728e [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 16: 0x5d4f02a28bdd - rust_begin_unwind [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:695:5 [INFO] [stdout] 17: 0x5d4f02a4d890 - core::panicking::panic_fmt::hca923aa694825dc3 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/panicking.rs:75:14 [INFO] [stdout] 18: 0x5d4f02a4dd36 - core::result::unwrap_failed::h1fd41ecb05679f50 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/result.rs:1704:5 [INFO] [stdout] 19: 0x5d4f0288039c - core::result::Result::unwrap::h0f59e6bff291c5ed [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/result.rs:1109:23 [INFO] [stdout] 20: 0x5d4f0288039c - rustlings::exercise::test::test_clean::h2a934608de622c34 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:270:9 [INFO] [stdout] 21: 0x5d4f028802d7 - rustlings::exercise::test::test_clean::{{closure}}::he387de5751f32412 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:20 [INFO] [stdout] 22: 0x5d4f0287b106 - core::ops::function::FnOnce::call_once::h5ac7d5dd80e17d6a [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x5d4f028c9b7b - core::ops::function::FnOnce::call_once::hbd335dbb4bb5fce4 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5d4f028c9b7b - test::__rust_begin_short_backtrace::h04cc5e3b375a80f9 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:638:18 [INFO] [stdout] 25: 0x5d4f028c8c35 - test::run_test_in_process::{{closure}}::h820e05c00a84ca94 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:661:60 [INFO] [stdout] 26: 0x5d4f028c8c35 - as core::ops::function::FnOnce<()>>::call_once::h5d54c80bc199f62c [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x5d4f028c8c35 - std::panicking::try::do_call::h832d61a9fc2b6e3e [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:587:40 [INFO] [stdout] 28: 0x5d4f028c8c35 - std::panicking::try::h9a404c5f3a090501 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:550:19 [INFO] [stdout] 29: 0x5d4f028c8c35 - std::panic::catch_unwind::hf5157d4c366d9053 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panic.rs:359:14 [INFO] [stdout] 30: 0x5d4f028c8c35 - test::run_test_in_process::h671deca6957ee157 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:661:27 [INFO] [stdout] 31: 0x5d4f028c8c35 - test::run_test::{{closure}}::h8a18e214254d2663 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:582:43 [INFO] [stdout] 32: 0x5d4f0288bc24 - test::run_test::{{closure}}::ha2abac7cc0a13c10 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:612:41 [INFO] [stdout] 33: 0x5d4f0288bc24 - std::sys::backtrace::__rust_begin_short_backtrace::h013f8b8ca29e5f67 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 34: 0x5d4f0288f75a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc0336636a8c55b05 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 35: 0x5d4f0288f75a - as core::ops::function::FnOnce<()>>::call_once::h256d9472a72a8c66 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x5d4f0288f75a - std::panicking::try::do_call::hf49ea3ffcc3bd1db [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:587:40 [INFO] [stdout] 37: 0x5d4f0288f75a - std::panicking::try::h2a067a3336161e1c [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:550:19 [INFO] [stdout] 38: 0x5d4f0288f75a - std::panic::catch_unwind::h931ea2a9df59b7fa [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panic.rs:359:14 [INFO] [stdout] 39: 0x5d4f0288f75a - std::thread::Builder::spawn_unchecked_::{{closure}}::haf08f1439431615c [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 40: 0x5d4f0288f75a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd1dc5dd1edff0233 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x5d4f02a2ca0b - as core::ops::function::FnOnce>::call_once::hf6ad22f40418d409 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 42: 0x5d4f02a2ca0b - as core::ops::function::FnOnce>::call_once::h734c3e370b18da4b [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 43: 0x5d4f02a2ca0b - std::sys::pal::unix::thread::Thread::new::thread_start::hfbde3a90511cd82d [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/pal/unix/thread.rs:109:17 [INFO] [stdout] 44: 0x74fd09d02ac3 - [INFO] [stdout] 45: 0x74fd09d93a04 - 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' panicked at src/exercise.rs:343:38: [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/./rmetac83wku\"\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: 0x5d4f02a27302 - std::backtrace_rs::backtrace::libunwind::trace::h8d95625898284e7d [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5d4f02a27302 - std::backtrace_rs::backtrace::trace_unsynchronized::h9eafd5c61303e492 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5d4f02a27302 - std::sys::backtrace::_print_fmt::hec2578e807cc4a3f [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5d4f02a27302 - ::fmt::hd8ebefbbcb1fe23a [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5d4f02a4ee93 - core::fmt::rt::Argument::fmt::h09f3c4b7b5ff5386 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/fmt/rt.rs:185:76 [INFO] [stdout] 5: 0x5d4f02a4ee93 - core::fmt::write::hef9d041e1d5d9592 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/fmt/mod.rs:1449:21 [INFO] [stdout] 6: 0x5d4f02a23fd3 - std::io::Write::write_fmt::h7cfb9383e0a29362 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/io/mod.rs:1890:15 [INFO] [stdout] 7: 0x5d4f02a27152 - std::sys::backtrace::BacktraceLock::print::h263d323f217ce3a7 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x5d4f02a287aa - std::panicking::default_hook::{{closure}}::h25050253f7dc0d3e [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:298:22 [INFO] [stdout] 9: 0x5d4f02a28599 - std::panicking::default_hook::hf3291a4c87ea2887 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:322:9 [INFO] [stdout] 10: 0x5d4f028c4297 - as core::ops::function::Fn>::call::h51204ed24e282361 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 11: 0x5d4f028c4297 - test::test_main::{{closure}}::h3588678a150ab7c4 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:136:21 [INFO] [stdout] 12: 0x5d4f02a29293 - as core::ops::function::Fn>::call::h95d63edfac47e230 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 13: 0x5d4f02a29293 - std::panicking::rust_panic_with_hook::h3550dbeaa1041124 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:839:13 [INFO] [stdout] 14: 0x5d4f02a28f4a - std::panicking::begin_panic_handler::{{closure}}::hde0dd646a9e2b5b7 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:704:13 [INFO] [stdout] 15: 0x5d4f02a277f9 - std::sys::backtrace::__rust_end_short_backtrace::haeb22ba48b4d728e [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 16: 0x5d4f02a28bdd - rust_begin_unwind [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:695:5 [INFO] [stdout] 17: 0x5d4f02a4d890 - core::panicking::panic_fmt::hca923aa694825dc3 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/panicking.rs:75:14 [INFO] [stdout] 18: 0x5d4f02a4dd36 - core::result::unwrap_failed::h1fd41ecb05679f50 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/result.rs:1704:5 [INFO] [stdout] 19: 0x5d4f02881232 - core::result::Result::unwrap::h4210e1abadc97575 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/result.rs:1109:23 [INFO] [stdout] 20: 0x5d4f02881232 - rustlings::exercise::test::test_exercise_with_output::h48509555318bf8c1 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:343:19 [INFO] [stdout] 21: 0x5d4f02881037 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::he6fe82f3d2db160e [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:336:35 [INFO] [stdout] 22: 0x5d4f0287b216 - core::ops::function::FnOnce::call_once::he6b5fcd05557b575 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x5d4f028c9b7b - core::ops::function::FnOnce::call_once::hbd335dbb4bb5fce4 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5d4f028c9b7b - test::__rust_begin_short_backtrace::h04cc5e3b375a80f9 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:638:18 [INFO] [stdout] 25: 0x5d4f028c8c35 - test::run_test_in_process::{{closure}}::h820e05c00a84ca94 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:661:60 [INFO] [stdout] 26: 0x5d4f028c8c35 - as core::ops::function::FnOnce<()>>::call_once::h5d54c80bc199f62c [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x5d4f028c8c35 - std::panicking::try::do_call::h832d61a9fc2b6e3e [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:587:40 [INFO] [stdout] 28: 0x5d4f028c8c35 - std::panicking::try::h9a404c5f3a090501 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:550:19 [INFO] [stdout] 29: 0x5d4f028c8c35 - std::panic::catch_unwind::hf5157d4c366d9053 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panic.rs:359:14 [INFO] [stdout] 30: 0x5d4f028c8c35 - test::run_test_in_process::h671deca6957ee157 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:661:27 [INFO] [stdout] 31: 0x5d4f028c8c35 - test::run_test::{{closure}}::h8a18e214254d2663 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:582:43 [INFO] [stdout] 32: 0x5d4f0288bc24 - test::run_test::{{closure}}::ha2abac7cc0a13c10 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/test/src/lib.rs:612:41 [INFO] [stdout] 33: 0x5d4f0288bc24 - std::sys::backtrace::__rust_begin_short_backtrace::h013f8b8ca29e5f67 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 34: 0x5d4f0288f75a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc0336636a8c55b05 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 35: 0x5d4f0288f75a - as core::ops::function::FnOnce<()>>::call_once::h256d9472a72a8c66 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x5d4f0288f75a - std::panicking::try::do_call::hf49ea3ffcc3bd1db [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:587:40 [INFO] [stdout] 37: 0x5d4f0288f75a - std::panicking::try::h2a067a3336161e1c [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panicking.rs:550:19 [INFO] [stdout] 38: 0x5d4f0288f75a - std::panic::catch_unwind::h931ea2a9df59b7fa [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/panic.rs:359:14 [INFO] [stdout] 39: 0x5d4f0288f75a - std::thread::Builder::spawn_unchecked_::{{closure}}::haf08f1439431615c [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 40: 0x5d4f0288f75a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hd1dc5dd1edff0233 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x5d4f02a2ca0b - as core::ops::function::FnOnce>::call_once::hf6ad22f40418d409 [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 42: 0x5d4f02a2ca0b - as core::ops::function::FnOnce>::call_once::h734c3e370b18da4b [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 43: 0x5d4f02a2ca0b - std::sys::pal::unix::thread::Thread::new::thread_start::hfbde3a90511cd82d [INFO] [stdout] at /rustc/a7ce54db9b096bd1098d07c645b489195a667c9f/library/std/src/sys/pal/unix/thread.rs:109:17 [INFO] [stdout] 44: 0x74fd09d02ac3 - [INFO] [stdout] 45: 0x74fd09d93a04 - 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" "19b8b80f2a7b50a2582663849df5ceb76bb6eb737219b572b1cc6489c25ca3e6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "19b8b80f2a7b50a2582663849df5ceb76bb6eb737219b572b1cc6489c25ca3e6", kill_on_drop: false }` [INFO] [stdout] 19b8b80f2a7b50a2582663849df5ceb76bb6eb737219b572b1cc6489c25ca3e6