[INFO] cloning repository https://github.com/dyllandry/rustlings-tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dyllandry/rustlings-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyllandry%2Frustlings-tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyllandry%2Frustlings-tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ca7b46a4a1d6bcd5e5a09333408908e8c9e43c98 [INFO] testing dyllandry/rustlings-tutorial against beta-2024-12-08 for beta-1.84.0-4 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyllandry%2Frustlings-tutorial" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dyllandry/rustlings-tutorial on toolchain beta-2024-12-08 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/dyllandry/rustlings-tutorial [INFO] finished tweaking git repo https://github.com/dyllandry/rustlings-tutorial [INFO] tweaked toml for git repo https://github.com/dyllandry/rustlings-tutorial written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/dyllandry/rustlings-tutorial already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 53c0d5b9e6c9c7ca2e486d4dc400b2d8b7ec6429e94540880635b86c3addd818 [INFO] running `Command { std: "docker" "start" "-a" "53c0d5b9e6c9c7ca2e486d4dc400b2d8b7ec6429e94540880635b86c3addd818", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "53c0d5b9e6c9c7ca2e486d4dc400b2d8b7ec6429e94540880635b86c3addd818", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "53c0d5b9e6c9c7ca2e486d4dc400b2d8b7ec6429e94540880635b86c3addd818", kill_on_drop: false }` [INFO] [stdout] 53c0d5b9e6c9c7ca2e486d4dc400b2d8b7ec6429e94540880635b86c3addd818 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4c639951fdaa2bbff28e05623dc0daa93c198a7978876c143ebbf484ac662e85 [INFO] running `Command { std: "docker" "start" "-a" "4c639951fdaa2bbff28e05623dc0daa93c198a7978876c143ebbf484ac662e85", 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 syn v1.0.75 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling instant v0.1.10 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling termios v0.3.3 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling number_prefix v0.2.8 [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 console v0.14.1 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling argh_derive v0.1.5 [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 23.87s [INFO] running `Command { std: "docker" "inspect" "4c639951fdaa2bbff28e05623dc0daa93c198a7978876c143ebbf484ac662e85", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4c639951fdaa2bbff28e05623dc0daa93c198a7978876c143ebbf484ac662e85", kill_on_drop: false }` [INFO] [stdout] 4c639951fdaa2bbff28e05623dc0daa93c198a7978876c143ebbf484ac662e85 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cfec31b21a9f9af53af540559e5309be8cbe4e361c78ba3003de9f9a3392f8f5 [INFO] running `Command { std: "docker" "start" "-a" "cfec31b21a9f9af53af540559e5309be8cbe4e361c78ba3003de9f9a3392f8f5", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling predicates-tree v1.0.3 [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 4.65s [INFO] running `Command { std: "docker" "inspect" "cfec31b21a9f9af53af540559e5309be8cbe4e361c78ba3003de9f9a3392f8f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cfec31b21a9f9af53af540559e5309be8cbe4e361c78ba3003de9f9a3392f8f5", kill_on_drop: false }` [INFO] [stdout] cfec31b21a9f9af53af540559e5309be8cbe4e361c78ba3003de9f9a3392f8f5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d86a58ba7ee5226f8233769eb4050f2acdc1e3bf2d90fe91b3f2843b3c974764 [INFO] running `Command { std: "docker" "start" "-a" "d86a58ba7ee5226f8233769eb4050f2acdc1e3bf2d90fe91b3f2843b3c974764", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-6a9213d1fb9f8379) [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] [stderr] error: test failed, to rerun pass `--bin rustlings` [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: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: 0x61ffa458bc4a - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x61ffa458bc4a - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x61ffa458bc4a - std::sys::backtrace::_print_fmt::h8588b0f62410823f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x61ffa458bc4a - ::fmt::h98c26ac25ffe89bb [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x61ffa45b1963 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76 [INFO] [stdout] 5: 0x61ffa45b1963 - core::fmt::write::h0dd5f6e2238c7982 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21 [INFO] [stdout] 6: 0x61ffa4588dd3 - std::io::Write::write_fmt::h03bb0ca26e6faf8c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15 [INFO] [stdout] 7: 0x61ffa458ba92 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x61ffa458d0cd - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22 [INFO] [stdout] 9: 0x61ffa458ced7 - std::panicking::default_hook::he5f8e3b203ccddba [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9 [INFO] [stdout] 10: 0x61ffa441c597 - as core::ops::function::Fn>::call::h7a3c7b4a1ae77f2f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 11: 0x61ffa441c597 - test::test_main::{{closure}}::hf0d3b69ae9b353d1 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21 [INFO] [stdout] 12: 0x61ffa458d778 - as core::ops::function::Fn>::call::h6332e82e7b189abd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 13: 0x61ffa458d778 - std::panicking::rust_panic_with_hook::h53863d4e9018df39 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13 [INFO] [stdout] 14: 0x61ffa458d53a - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13 [INFO] [stdout] 15: 0x61ffa458c129 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x61ffa458d1cc - rust_begin_unwind [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5 [INFO] [stdout] 17: 0x61ffa43d21d0 - core::panicking::panic_fmt::h6792bd1b2bf01041 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14 [INFO] [stdout] 18: 0x61ffa43d2656 - core::result::unwrap_failed::h05e0602ed34287c5 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5 [INFO] [stdout] 19: 0x61ffa43d891a - core::result::Result::unwrap::ha8dbc3da0f2626ef [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1104:23 [INFO] [stdout] 20: 0x61ffa43d891a - rustlings::exercise::test::test_clean::h9071a69949de2823 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:270:9 [INFO] [stdout] 21: 0x61ffa43d8857 - rustlings::exercise::test::test_clean::{{closure}}::hb9ef12ee9c222efd [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:20 [INFO] [stdout] 22: 0x61ffa43da796 - core::ops::function::FnOnce::call_once::h0f230d83db587397 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x61ffa44210bb - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x61ffa44210bb - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18 [INFO] [stdout] 25: 0x61ffa4420aa8 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60 [INFO] [stdout] 26: 0x61ffa4420aa8 - as core::ops::function::FnOnce<()>>::call_once::hb6c8955835a8dbbb [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x61ffa4420aa8 - std::panicking::try::do_call::hc79d0fc888a0bd30 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 28: 0x61ffa4420aa8 - std::panicking::try::hb8a7878e3a8589d6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 29: 0x61ffa4420aa8 - std::panic::catch_unwind::hb8e4600ff0ff5cfa [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 30: 0x61ffa4420aa8 - test::run_test_in_process::hc2900b0b18688dd6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27 [INFO] [stdout] 31: 0x61ffa4420aa8 - test::run_test::{{closure}}::hac2a9cb07be3d48d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43 [INFO] [stdout] 32: 0x61ffa43e454a - test::run_test::{{closure}}::h4a5b729e66a38cd8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41 [INFO] [stdout] 33: 0x61ffa43e454a - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x61ffa43e7ec4 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17 [INFO] [stdout] 35: 0x61ffa43e7ec4 - as core::ops::function::FnOnce<()>>::call_once::h46696fe4a6832328 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x61ffa43e7ec4 - std::panicking::try::do_call::h2625a51b667bfb64 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 37: 0x61ffa43e7ec4 - std::panicking::try::hb956a59a1973aa4c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 38: 0x61ffa43e7ec4 - std::panic::catch_unwind::h64f3b9d1067ef6a0 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 39: 0x61ffa43e7ec4 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30 [INFO] [stdout] 40: 0x61ffa43e7ec4 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6127de71b8124639 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x61ffa459189b - as core::ops::function::FnOnce>::call_once::h42f0ba71002a1b2c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 42: 0x61ffa459189b - as core::ops::function::FnOnce>::call_once::had9e47d7a3dcecb8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 43: 0x61ffa459189b - std::sys::pal::unix::thread::Thread::new::thread_start::h48cf765408f6f5f2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x73572cbbaac3 - [INFO] [stdout] 45: 0x73572cc4ba04 - clone [INFO] [stdout] 46: 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: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/./rmetawzifPF\"\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: 0x61ffa458bc4a - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x61ffa458bc4a - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x61ffa458bc4a - std::sys::backtrace::_print_fmt::h8588b0f62410823f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x61ffa458bc4a - ::fmt::h98c26ac25ffe89bb [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x61ffa45b1963 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76 [INFO] [stdout] 5: 0x61ffa45b1963 - core::fmt::write::h0dd5f6e2238c7982 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21 [INFO] [stdout] 6: 0x61ffa4588dd3 - std::io::Write::write_fmt::h03bb0ca26e6faf8c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15 [INFO] [stdout] 7: 0x61ffa458ba92 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x61ffa458d0cd - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22 [INFO] [stdout] 9: 0x61ffa458ced7 - std::panicking::default_hook::he5f8e3b203ccddba [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9 [INFO] [stdout] 10: 0x61ffa441c597 - as core::ops::function::Fn>::call::h7a3c7b4a1ae77f2f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 11: 0x61ffa441c597 - test::test_main::{{closure}}::hf0d3b69ae9b353d1 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21 [INFO] [stdout] 12: 0x61ffa458d778 - as core::ops::function::Fn>::call::h6332e82e7b189abd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 13: 0x61ffa458d778 - std::panicking::rust_panic_with_hook::h53863d4e9018df39 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13 [INFO] [stdout] 14: 0x61ffa458d53a - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13 [INFO] [stdout] 15: 0x61ffa458c129 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x61ffa458d1cc - rust_begin_unwind [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5 [INFO] [stdout] 17: 0x61ffa43d21d0 - core::panicking::panic_fmt::h6792bd1b2bf01041 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14 [INFO] [stdout] 18: 0x61ffa43d2656 - core::result::unwrap_failed::h05e0602ed34287c5 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5 [INFO] [stdout] 19: 0x61ffa43d9766 - core::result::Result::unwrap::h194b5dae65364836 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1104:23 [INFO] [stdout] 20: 0x61ffa43d9766 - rustlings::exercise::test::test_exercise_with_output::h676243dfcf141494 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:343:19 [INFO] [stdout] 21: 0x61ffa43d9577 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hea3ed8b8f12b09a3 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:336:35 [INFO] [stdout] 22: 0x61ffa43da856 - core::ops::function::FnOnce::call_once::h665c8ff2cae0a4b9 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x61ffa44210bb - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x61ffa44210bb - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18 [INFO] [stdout] 25: 0x61ffa4420aa8 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60 [INFO] [stdout] 26: 0x61ffa4420aa8 - as core::ops::function::FnOnce<()>>::call_once::hb6c8955835a8dbbb [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x61ffa4420aa8 - std::panicking::try::do_call::hc79d0fc888a0bd30 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 28: 0x61ffa4420aa8 - std::panicking::try::hb8a7878e3a8589d6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 29: 0x61ffa4420aa8 - std::panic::catch_unwind::hb8e4600ff0ff5cfa [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 30: 0x61ffa4420aa8 - test::run_test_in_process::hc2900b0b18688dd6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27 [INFO] [stdout] 31: 0x61ffa4420aa8 - test::run_test::{{closure}}::hac2a9cb07be3d48d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43 [INFO] [stdout] 32: 0x61ffa43e454a - test::run_test::{{closure}}::h4a5b729e66a38cd8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41 [INFO] [stdout] 33: 0x61ffa43e454a - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x61ffa43e7ec4 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17 [INFO] [stdout] 35: 0x61ffa43e7ec4 - as core::ops::function::FnOnce<()>>::call_once::h46696fe4a6832328 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x61ffa43e7ec4 - std::panicking::try::do_call::h2625a51b667bfb64 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 37: 0x61ffa43e7ec4 - std::panicking::try::hb956a59a1973aa4c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 38: 0x61ffa43e7ec4 - std::panic::catch_unwind::h64f3b9d1067ef6a0 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 39: 0x61ffa43e7ec4 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30 [INFO] [stdout] 40: 0x61ffa43e7ec4 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6127de71b8124639 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x61ffa459189b - as core::ops::function::FnOnce>::call_once::h42f0ba71002a1b2c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 42: 0x61ffa459189b - as core::ops::function::FnOnce>::call_once::had9e47d7a3dcecb8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 43: 0x61ffa459189b - std::sys::pal::unix::thread::Thread::new::thread_start::h48cf765408f6f5f2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x73572cbbaac3 - [INFO] [stdout] 45: 0x73572cc4ba04 - 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 0.12s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d86a58ba7ee5226f8233769eb4050f2acdc1e3bf2d90fe91b3f2843b3c974764", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d86a58ba7ee5226f8233769eb4050f2acdc1e3bf2d90fe91b3f2843b3c974764", kill_on_drop: false }` [INFO] [stdout] d86a58ba7ee5226f8233769eb4050f2acdc1e3bf2d90fe91b3f2843b3c974764