[INFO] cloning repository https://github.com/ethomas2/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ethomas2/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fethomas2%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fethomas2%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 89b655bef12f3eb4ad4c77d1e1823d50e0979bcf [INFO] testing ethomas2/rustlings 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%2Fethomas2%2Frustlings" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ethomas2/rustlings 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/ethomas2/rustlings [INFO] finished tweaking git repo https://github.com/ethomas2/rustlings [INFO] tweaked toml for git repo https://github.com/ethomas2/rustlings written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ethomas2/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" "+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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 57d6b5d1ca43c50316f431fdf7e61b5f780ed617aab0fba358658fda9f451d00 [INFO] running `Command { std: "docker" "start" "-a" "57d6b5d1ca43c50316f431fdf7e61b5f780ed617aab0fba358658fda9f451d00", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "57d6b5d1ca43c50316f431fdf7e61b5f780ed617aab0fba358658fda9f451d00", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "57d6b5d1ca43c50316f431fdf7e61b5f780ed617aab0fba358658fda9f451d00", kill_on_drop: false }` [INFO] [stdout] 57d6b5d1ca43c50316f431fdf7e61b5f780ed617aab0fba358658fda9f451d00 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3d21cde384591df384a912718e97a610992410f01d64b2a10a71f87b0a3db35d [INFO] running `Command { std: "docker" "start" "-a" "3d21cde384591df384a912718e97a610992410f01d64b2a10a71f87b0a3db35d", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.53 [INFO] [stderr] Compiling unicode-ident v1.0.8 [INFO] [stderr] Compiling libc v0.2.140 [INFO] [stderr] Compiling quote v1.0.26 [INFO] [stderr] Compiling serde_derive v1.0.158 [INFO] [stderr] Compiling serde v1.0.158 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling utf8parse v0.2.1 [INFO] [stderr] Compiling portable-atomic v1.4.3 [INFO] [stderr] Compiling equivalent v1.0.1 [INFO] [stderr] Compiling colorchoice v1.0.0 [INFO] [stderr] Compiling anstyle-query v1.0.0 [INFO] [stderr] Compiling hashbrown v0.14.0 [INFO] [stderr] Compiling anstyle v1.0.3 [INFO] [stderr] Compiling clap_lex v0.5.1 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling serde_json v1.0.94 [INFO] [stderr] Compiling anstyle-parse v0.2.1 [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Compiling unicode-width v0.1.10 [INFO] [stderr] Compiling memchr v2.6.3 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling winnow v0.5.15 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling walkdir v2.3.3 [INFO] [stderr] Compiling anstream v0.5.0 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling indexmap v2.0.0 [INFO] [stderr] Compiling ryu v1.0.13 [INFO] [stderr] Compiling regex-syntax v0.6.29 [INFO] [stderr] Compiling itoa v1.0.6 [INFO] [stderr] Compiling glob v0.3.1 [INFO] [stderr] Compiling home v0.5.4 [INFO] [stderr] Compiling clap_builder v4.4.2 [INFO] [stderr] Compiling slab v0.4.8 [INFO] [stderr] Compiling aho-corasick v0.7.20 [INFO] [stderr] Compiling syn v2.0.8 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.38 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling filetime v0.2.20 [INFO] [stderr] Compiling console v0.15.5 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling indicatif v0.17.6 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex v1.7.2 [INFO] [stderr] Compiling clap_derive v4.4.2 [INFO] [stderr] Compiling clap v4.4.3 [INFO] [stderr] Compiling toml_datetime v0.6.3 [INFO] [stderr] Compiling serde_spanned v0.6.3 [INFO] [stderr] Compiling toml_edit v0.19.15 [INFO] [stderr] Compiling toml v0.7.8 [INFO] [stderr] Compiling rustlings v5.6.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.60s [INFO] running `Command { std: "docker" "inspect" "3d21cde384591df384a912718e97a610992410f01d64b2a10a71f87b0a3db35d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d21cde384591df384a912718e97a610992410f01d64b2a10a71f87b0a3db35d", kill_on_drop: false }` [INFO] [stdout] 3d21cde384591df384a912718e97a610992410f01d64b2a10a71f87b0a3db35d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b1acf454066714483e6485ea1c9f4f6b6ab1971261a9d3596c88451ad3c58f59 [INFO] running `Command { std: "docker" "start" "-a" "b1acf454066714483e6485ea1c9f4f6b6ab1971261a9d3596c88451ad3c58f59", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Compiling either v1.9.0 [INFO] [stderr] Compiling predicates-core v1.0.6 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difflib v0.4.0 [INFO] [stderr] Compiling termtree v0.4.1 [INFO] [stderr] Compiling regex-automata v0.3.8 [INFO] [stderr] Compiling wait-timeout v0.2.0 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Compiling predicates-tree v1.0.9 [INFO] [stderr] Compiling bstr v1.6.2 [INFO] [stderr] Compiling float-cmp v0.9.0 [INFO] [stderr] Compiling predicates v3.0.3 [INFO] [stderr] Compiling assert_cmd v2.0.12 [INFO] [stderr] Compiling rustlings v5.6.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 8.85s [INFO] running `Command { std: "docker" "inspect" "b1acf454066714483e6485ea1c9f4f6b6ab1971261a9d3596c88451ad3c58f59", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b1acf454066714483e6485ea1c9f4f6b6ab1971261a9d3596c88451ad3c58f59", kill_on_drop: false }` [INFO] [stdout] b1acf454066714483e6485ea1c9f4f6b6ab1971261a9d3596c88451ad3c58f59 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3f9dae3ccc92fc125b9671d1f15125bf4cbd0d967d69053683be204f1d8dfb70 [INFO] running `Command { std: "docker" "start" "-a" "3f9dae3ccc92fc125b9671d1f15125bf4cbd0d967d69053683be204f1d8dfb70", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-f07a1ee5157cb009) [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:284:35: [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: 0x56c76d5a114a - 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: 0x56c76d5a114a - 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: 0x56c76d5a114a - std::sys::backtrace::_print_fmt::h8588b0f62410823f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x56c76d5a114a - ::fmt::h98c26ac25ffe89bb [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x56c76d5c6e63 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76 [INFO] [stdout] 5: 0x56c76d5c6e63 - core::fmt::write::h0dd5f6e2238c7982 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21 [INFO] [stdout] 6: 0x56c76d59e2b3 - std::io::Write::write_fmt::h03bb0ca26e6faf8c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15 [INFO] [stdout] 7: 0x56c76d5a0f92 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x56c76d5a25cd - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22 [INFO] [stdout] 9: 0x56c76d5a23d7 - std::panicking::default_hook::he5f8e3b203ccddba [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9 [INFO] [stdout] 10: 0x56c76d421927 - as core::ops::function::Fn>::call::h7a3c7b4a1ae77f2f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 11: 0x56c76d421927 - test::test_main::{{closure}}::hf0d3b69ae9b353d1 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21 [INFO] [stdout] 12: 0x56c76d5a2c78 - as core::ops::function::Fn>::call::h6332e82e7b189abd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 13: 0x56c76d5a2c78 - std::panicking::rust_panic_with_hook::h53863d4e9018df39 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13 [INFO] [stdout] 14: 0x56c76d5a2a3a - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13 [INFO] [stdout] 15: 0x56c76d5a1629 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x56c76d5a26cc - rust_begin_unwind [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5 [INFO] [stdout] 17: 0x56c76d3db1d0 - core::panicking::panic_fmt::h6792bd1b2bf01041 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14 [INFO] [stdout] 18: 0x56c76d3db656 - core::result::unwrap_failed::h05e0602ed34287c5 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5 [INFO] [stdout] 19: 0x56c76d3e63b2 - core::result::Result::unwrap::h0a3371d755f89d11 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1104:23 [INFO] [stdout] 20: 0x56c76d3e63b2 - rustlings::exercise::test::test_clean::h9458c9da4c724938 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:284:9 [INFO] [stdout] 21: 0x56c76d3e6337 - rustlings::exercise::test::test_clean::{{closure}}::h1344765fd64a68c3 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:283:20 [INFO] [stdout] 22: 0x56c76d3e2f86 - core::ops::function::FnOnce::call_once::hba02479625c51e52 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x56c76d42644b - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x56c76d42644b - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18 [INFO] [stdout] 25: 0x56c76d425e38 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60 [INFO] [stdout] 26: 0x56c76d425e38 - 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: 0x56c76d425e38 - std::panicking::try::do_call::hc79d0fc888a0bd30 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 28: 0x56c76d425e38 - std::panicking::try::hb8a7878e3a8589d6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 29: 0x56c76d425e38 - std::panic::catch_unwind::hb8e4600ff0ff5cfa [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 30: 0x56c76d425e38 - test::run_test_in_process::hc2900b0b18688dd6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27 [INFO] [stdout] 31: 0x56c76d425e38 - test::run_test::{{closure}}::hac2a9cb07be3d48d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43 [INFO] [stdout] 32: 0x56c76d3e98da - test::run_test::{{closure}}::h4a5b729e66a38cd8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41 [INFO] [stdout] 33: 0x56c76d3e98da - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x56c76d3ed254 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17 [INFO] [stdout] 35: 0x56c76d3ed254 - 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: 0x56c76d3ed254 - std::panicking::try::do_call::h2625a51b667bfb64 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 37: 0x56c76d3ed254 - std::panicking::try::hb956a59a1973aa4c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 38: 0x56c76d3ed254 - std::panic::catch_unwind::h64f3b9d1067ef6a0 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 39: 0x56c76d3ed254 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30 [INFO] [stdout] 40: 0x56c76d3ed254 - 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: 0x56c76d5a6d9b - as core::ops::function::FnOnce>::call_once::h42f0ba71002a1b2c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 42: 0x56c76d5a6d9b - as core::ops::function::FnOnce>::call_once::had9e47d7a3dcecb8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 43: 0x56c76d5a6d9b - 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: 0x7beb2c7ebac3 - [INFO] [stdout] 45: 0x7beb2c87ca04 - 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:375:38: [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/./rmetacScXIs\"\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: 0x56c76d5a114a - 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: 0x56c76d5a114a - 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: 0x56c76d5a114a - std::sys::backtrace::_print_fmt::h8588b0f62410823f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x56c76d5a114a - ::fmt::h98c26ac25ffe89bb [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x56c76d5c6e63 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76 [INFO] [stdout] 5: 0x56c76d5c6e63 - core::fmt::write::h0dd5f6e2238c7982 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21 [INFO] [stdout] 6: 0x56c76d59e2b3 - std::io::Write::write_fmt::h03bb0ca26e6faf8c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15 [INFO] [stdout] 7: 0x56c76d5a0f92 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x56c76d5a25cd - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22 [INFO] [stdout] 9: 0x56c76d5a23d7 - std::panicking::default_hook::he5f8e3b203ccddba [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9 [INFO] [stdout] 10: 0x56c76d421927 - as core::ops::function::Fn>::call::h7a3c7b4a1ae77f2f [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 11: 0x56c76d421927 - test::test_main::{{closure}}::hf0d3b69ae9b353d1 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21 [INFO] [stdout] 12: 0x56c76d5a2c78 - as core::ops::function::Fn>::call::h6332e82e7b189abd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9 [INFO] [stdout] 13: 0x56c76d5a2c78 - std::panicking::rust_panic_with_hook::h53863d4e9018df39 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13 [INFO] [stdout] 14: 0x56c76d5a2a3a - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13 [INFO] [stdout] 15: 0x56c76d5a1629 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x56c76d5a26cc - rust_begin_unwind [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5 [INFO] [stdout] 17: 0x56c76d3db1d0 - core::panicking::panic_fmt::h6792bd1b2bf01041 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14 [INFO] [stdout] 18: 0x56c76d3db656 - core::result::unwrap_failed::h05e0602ed34287c5 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5 [INFO] [stdout] 19: 0x56c76d3e71ea - core::result::Result::unwrap::h392ce42ca9a20e20 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1104:23 [INFO] [stdout] 20: 0x56c76d3e71ea - rustlings::exercise::test::test_exercise_with_output::h1b59acf23f35b1aa [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:375:19 [INFO] [stdout] 21: 0x56c76d3e6ff7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h88275a1a28a89870 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:368:35 [INFO] [stdout] 22: 0x56c76d3e2fc6 - core::ops::function::FnOnce::call_once::hbe6cb067b3cc4e55 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x56c76d42644b - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x56c76d42644b - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18 [INFO] [stdout] 25: 0x56c76d425e38 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60 [INFO] [stdout] 26: 0x56c76d425e38 - 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: 0x56c76d425e38 - std::panicking::try::do_call::hc79d0fc888a0bd30 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 28: 0x56c76d425e38 - std::panicking::try::hb8a7878e3a8589d6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 29: 0x56c76d425e38 - std::panic::catch_unwind::hb8e4600ff0ff5cfa [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 30: 0x56c76d425e38 - test::run_test_in_process::hc2900b0b18688dd6 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27 [INFO] [stdout] 31: 0x56c76d425e38 - test::run_test::{{closure}}::hac2a9cb07be3d48d [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43 [INFO] [stdout] 32: 0x56c76d3e98da - test::run_test::{{closure}}::h4a5b729e66a38cd8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41 [INFO] [stdout] 33: 0x56c76d3e98da - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x56c76d3ed254 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17 [INFO] [stdout] 35: 0x56c76d3ed254 - 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: 0x56c76d3ed254 - std::panicking::try::do_call::h2625a51b667bfb64 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40 [INFO] [stdout] 37: 0x56c76d3ed254 - std::panicking::try::hb956a59a1973aa4c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19 [INFO] [stdout] 38: 0x56c76d3ed254 - std::panic::catch_unwind::h64f3b9d1067ef6a0 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14 [INFO] [stdout] 39: 0x56c76d3ed254 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30 [INFO] [stdout] 40: 0x56c76d3ed254 - 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: 0x56c76d5a6d9b - as core::ops::function::FnOnce>::call_once::h42f0ba71002a1b2c [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 42: 0x56c76d5a6d9b - as core::ops::function::FnOnce>::call_once::had9e47d7a3dcecb8 [INFO] [stdout] at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9 [INFO] [stdout] 43: 0x56c76d5a6d9b - 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: 0x7beb2c7ebac3 - [INFO] [stdout] 45: 0x7beb2c87ca04 - 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 0.20s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "3f9dae3ccc92fc125b9671d1f15125bf4cbd0d967d69053683be204f1d8dfb70", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3f9dae3ccc92fc125b9671d1f15125bf4cbd0d967d69053683be204f1d8dfb70", kill_on_drop: false }` [INFO] [stdout] 3f9dae3ccc92fc125b9671d1f15125bf4cbd0d967d69053683be204f1d8dfb70