[INFO] cloning repository https://github.com/LearningOS/learn_rust_rustlings-lex-du [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/learn_rust_rustlings-lex-du" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Flearn_rust_rustlings-lex-du", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Flearn_rust_rustlings-lex-du'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3dfa6ce069f80bfb92260591a6b0d68bb302db4a [INFO] testing LearningOS/learn_rust_rustlings-lex-du/3dfa6ce069f80bfb92260591a6b0d68bb302db4a against master#414482f6a0d4e7290f614300581a0b55442552a3 for pr-140985 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Flearn_rust_rustlings-lex-du" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LearningOS/learn_rust_rustlings-lex-du on toolchain 414482f6a0d4e7290f614300581a0b55442552a3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LearningOS/learn_rust_rustlings-lex-du [INFO] finished tweaking git repo https://github.com/LearningOS/learn_rust_rustlings-lex-du [INFO] tweaked toml for git repo https://github.com/LearningOS/learn_rust_rustlings-lex-du written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/learn_rust_rustlings-lex-du 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" "+414482f6a0d4e7290f614300581a0b55442552a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3687e79fdbcb652e7335f484995b5e8dab4ec853975105271ee909f783735cd3 [INFO] running `Command { std: "docker" "start" "-a" "3687e79fdbcb652e7335f484995b5e8dab4ec853975105271ee909f783735cd3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3687e79fdbcb652e7335f484995b5e8dab4ec853975105271ee909f783735cd3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3687e79fdbcb652e7335f484995b5e8dab4ec853975105271ee909f783735cd3", kill_on_drop: false }` [INFO] [stdout] 3687e79fdbcb652e7335f484995b5e8dab4ec853975105271ee909f783735cd3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 66554b1f40ac5ebc5ae1b640c5fc2eee7139ba3817d1d14a2868617ac0cccf68 [INFO] running `Command { std: "docker" "start" "-a" "66554b1f40ac5ebc5ae1b640c5fc2eee7139ba3817d1d14a2868617ac0cccf68", 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 cfg-if v1.0.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [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 walkdir v2.3.2 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.5.9 [INFO] [stderr] Compiling rustlings v4.8.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 42.12s [INFO] running `Command { std: "docker" "inspect" "66554b1f40ac5ebc5ae1b640c5fc2eee7139ba3817d1d14a2868617ac0cccf68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "66554b1f40ac5ebc5ae1b640c5fc2eee7139ba3817d1d14a2868617ac0cccf68", kill_on_drop: false }` [INFO] [stdout] 66554b1f40ac5ebc5ae1b640c5fc2eee7139ba3817d1d14a2868617ac0cccf68 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ba25a49b1bd5b4b0f7d5a16d8f244717b8083bd1d270364e213c030f7608d45c [INFO] running `Command { std: "docker" "start" "-a" "ba25a49b1bd5b4b0f7d5a16d8f244717b8083bd1d270364e213c030f7608d45c", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling escargot v0.4.0 [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 predicates-tree v1.0.3 [INFO] [stderr] Compiling num-traits v0.2.14 [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 v4.8.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 8.07s [INFO] running `Command { std: "docker" "inspect" "ba25a49b1bd5b4b0f7d5a16d8f244717b8083bd1d270364e213c030f7608d45c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ba25a49b1bd5b4b0f7d5a16d8f244717b8083bd1d270364e213c030f7608d45c", kill_on_drop: false }` [INFO] [stdout] ba25a49b1bd5b4b0f7d5a16d8f244717b8083bd1d270364e213c030f7608d45c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] a512b8d63b00b12c0be106fc0f3d5d0b3afabefd7e420a019f47a1a1c410c9ab [INFO] running `Command { std: "docker" "start" "-a" "a512b8d63b00b12c0be106fc0f3d5d0b3afabefd7e420a019f47a1a1c410c9ab", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustlings-07f4fc2dcf2edc7c) [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-da6bf78c0b4ec307) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [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] [INFO] [stdout] thread 'exercise::test::test_clean' panicked at src/exercise.rs:269:36: [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: 0x5a686c5c9982 - std::backtrace_rs::backtrace::libunwind::trace::h2a54ddf40adf8cf8 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5a686c5c9982 - std::backtrace_rs::backtrace::trace_unsynchronized::h332dec2b3594a10b [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5a686c5c9982 - std::sys::backtrace::_print_fmt::hcb3dee91dccac105 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5a686c5c9982 - ::fmt::h2f02338d4ae6d8b0 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5a686c5ee303 - core::fmt::rt::Argument::fmt::h8705d664b1839d6c [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5a686c5ee303 - core::fmt::write::h5e77c22335cabc7f [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/fmt/mod.rs:1446:25 [INFO] [stdout] 6: 0x5a686c5c67b3 - std::io::default_write_fmt::h5c16109ce8878b06 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5a686c5c67b3 - std::io::Write::write_fmt::h183cd11c08a12e04 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/io/mod.rs:1914:13 [INFO] [stdout] 8: 0x5a686c5c97d2 - std::sys::backtrace::BacktraceLock::print::hb22254026b13323e [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5a686c5cafbc - std::panicking::default_hook::{{closure}}::h15ac4e3ee7801be5 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:300:22 [INFO] [stdout] 10: 0x5a686c5cae12 - std::panicking::default_hook::h15db2a3343942a16 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x5a686c461af4 - as core::ops::function::Fn>::call::ha02114eecd5b8f69 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1980:9 [INFO] [stdout] 12: 0x5a686c461af4 - test::test_main_with_exit_callback::{{closure}}::hfb76c9b760818eb2 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5a686c5cbab3 - as core::ops::function::Fn>::call::h325134fa51136753 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1980:9 [INFO] [stdout] 14: 0x5a686c5cbab3 - std::panicking::rust_panic_with_hook::h67f3fa85499b6cf9 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x5a686c5cb76a - std::panicking::begin_panic_handler::{{closure}}::h40a30e994b26720e [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x5a686c5c9e89 - std::sys::backtrace::__rust_end_short_backtrace::hb5bcb2f6ea295c8b [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 17: 0x5a686c5cb3fd - __rustc[bf3627c2b8b7eae9]::rust_begin_unwind [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x5a686c5ecd70 - core::panicking::panic_fmt::h20722ae9d0312a90 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x5a686c5ed1d6 - core::result::unwrap_failed::h3a549f59308089dd [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/result.rs:1732:5 [INFO] [stdout] 20: 0x5a686c41f53c - core::result::Result::unwrap::h7cb881611739ac30 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/result.rs:1137:23 [INFO] [stdout] 21: 0x5a686c41f53c - rustlings::exercise::test::test_clean::h46b4b96571a925fe [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:9 [INFO] [stdout] 22: 0x5a686c41f477 - rustlings::exercise::test::test_clean::{{closure}}::h28822f6a893ffd81 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x5a686c41c9b6 - core::ops::function::FnOnce::call_once::hd1c7acd70ad5979d [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5a686c4672ab - core::ops::function::FnOnce::call_once::h57f6f31c364c320b [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5a686c4672ab - test::__rust_begin_short_backtrace::h517520f4c2bfc013 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x5a686c466502 - test::run_test_in_process::{{closure}}::h0914ac5f2719bf90 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:671:60 [INFO] [stdout] 27: 0x5a686c466502 - as core::ops::function::FnOnce<()>>::call_once::h6fe627a8560ee122 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x5a686c466502 - std::panicking::try::do_call::h8e4a522b2d07b5d9 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x5a686c466502 - std::panicking::try::h254b443d279d1f8a [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x5a686c466502 - std::panic::catch_unwind::he39107e495b94aed [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5a686c466502 - test::run_test_in_process::hb9053e7102e6de40 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x5a686c466502 - test::run_test::{{closure}}::hed53f683e9967fc9 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x5a686c4298f4 - test::run_test::{{closure}}::h1b1395a97621c24c [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x5a686c4298f4 - std::sys::backtrace::__rust_begin_short_backtrace::hd15d7342920b94e4 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 35: 0x5a686c42d31a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf7d3403d2a997ad4 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x5a686c42d31a - as core::ops::function::FnOnce<()>>::call_once::h804cb151403aed57 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x5a686c42d31a - std::panicking::try::do_call::h83a3328114f83651 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x5a686c42d31a - std::panicking::try::h5371451a86d476d0 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x5a686c42d31a - std::panic::catch_unwind::h2d1b89e7535ca74a [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5a686c42d31a - std::thread::Builder::spawn_unchecked_::{{closure}}::h169c242c7f876b92 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x5a686c42d31a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4115e0f997976371 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5a686c5cd35b - as core::ops::function::FnOnce>::call_once::hbc3fa83432d7fd73 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1966:9 [INFO] [stdout] 43: 0x5a686c5cd35b - as core::ops::function::FnOnce>::call_once::heba5519d10f2c030 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1966:9 [INFO] [stdout] 44: 0x5a686c5cd35b - std::sys::pal::unix::thread::Thread::new::thread_start::h211a36f354245501 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/pal/unix/thread.rs:97:17 [INFO] [stdout] 45: 0x728b8e71faa4 - [INFO] [stdout] 46: 0x728b8e7aca34 - clone [INFO] [stdout] 47: 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:342:38: [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/./rmetakITAXS\"\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: 0x5a686c5c9982 - std::backtrace_rs::backtrace::libunwind::trace::h2a54ddf40adf8cf8 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5a686c5c9982 - std::backtrace_rs::backtrace::trace_unsynchronized::h332dec2b3594a10b [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5a686c5c9982 - std::sys::backtrace::_print_fmt::hcb3dee91dccac105 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5a686c5c9982 - ::fmt::h2f02338d4ae6d8b0 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5a686c5ee303 - core::fmt::rt::Argument::fmt::h8705d664b1839d6c [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5a686c5ee303 - core::fmt::write::h5e77c22335cabc7f [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/fmt/mod.rs:1446:25 [INFO] [stdout] 6: 0x5a686c5c67b3 - std::io::default_write_fmt::h5c16109ce8878b06 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5a686c5c67b3 - std::io::Write::write_fmt::h183cd11c08a12e04 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/io/mod.rs:1914:13 [INFO] [stdout] 8: 0x5a686c5c97d2 - std::sys::backtrace::BacktraceLock::print::hb22254026b13323e [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5a686c5cafbc - std::panicking::default_hook::{{closure}}::h15ac4e3ee7801be5 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:300:22 [INFO] [stdout] 10: 0x5a686c5cae12 - std::panicking::default_hook::h15db2a3343942a16 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x5a686c461af4 - as core::ops::function::Fn>::call::ha02114eecd5b8f69 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1980:9 [INFO] [stdout] 12: 0x5a686c461af4 - test::test_main_with_exit_callback::{{closure}}::hfb76c9b760818eb2 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5a686c5cbab3 - as core::ops::function::Fn>::call::h325134fa51136753 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1980:9 [INFO] [stdout] 14: 0x5a686c5cbab3 - std::panicking::rust_panic_with_hook::h67f3fa85499b6cf9 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x5a686c5cb76a - std::panicking::begin_panic_handler::{{closure}}::h40a30e994b26720e [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x5a686c5c9e89 - std::sys::backtrace::__rust_end_short_backtrace::hb5bcb2f6ea295c8b [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 17: 0x5a686c5cb3fd - __rustc[bf3627c2b8b7eae9]::rust_begin_unwind [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x5a686c5ecd70 - core::panicking::panic_fmt::h20722ae9d0312a90 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x5a686c5ed1d6 - core::result::unwrap_failed::h3a549f59308089dd [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/result.rs:1732:5 [INFO] [stdout] 20: 0x5a686c4203d6 - core::result::Result::unwrap::h70f780ec33c5e92e [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/result.rs:1137:23 [INFO] [stdout] 21: 0x5a686c4203d6 - rustlings::exercise::test::test_exercise_with_output::h0b52184d11188905 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:19 [INFO] [stdout] 22: 0x5a686c4201d7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hd7864b367e59b55c [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x5a686c41c936 - core::ops::function::FnOnce::call_once::h9cd9df9995e5845d [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5a686c4672ab - core::ops::function::FnOnce::call_once::h57f6f31c364c320b [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5a686c4672ab - test::__rust_begin_short_backtrace::h517520f4c2bfc013 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x5a686c466502 - test::run_test_in_process::{{closure}}::h0914ac5f2719bf90 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:671:60 [INFO] [stdout] 27: 0x5a686c466502 - as core::ops::function::FnOnce<()>>::call_once::h6fe627a8560ee122 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x5a686c466502 - std::panicking::try::do_call::h8e4a522b2d07b5d9 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x5a686c466502 - std::panicking::try::h254b443d279d1f8a [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x5a686c466502 - std::panic::catch_unwind::he39107e495b94aed [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5a686c466502 - test::run_test_in_process::hb9053e7102e6de40 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x5a686c466502 - test::run_test::{{closure}}::hed53f683e9967fc9 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x5a686c4298f4 - test::run_test::{{closure}}::h1b1395a97621c24c [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x5a686c4298f4 - std::sys::backtrace::__rust_begin_short_backtrace::hd15d7342920b94e4 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 35: 0x5a686c42d31a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf7d3403d2a997ad4 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x5a686c42d31a - as core::ops::function::FnOnce<()>>::call_once::h804cb151403aed57 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x5a686c42d31a - std::panicking::try::do_call::h83a3328114f83651 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x5a686c42d31a - std::panicking::try::h5371451a86d476d0 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x5a686c42d31a - std::panic::catch_unwind::h2d1b89e7535ca74a [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5a686c42d31a - std::thread::Builder::spawn_unchecked_::{{closure}}::h169c242c7f876b92 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x5a686c42d31a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4115e0f997976371 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5a686c5cd35b - as core::ops::function::FnOnce>::call_once::hbc3fa83432d7fd73 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1966:9 [INFO] [stdout] 43: 0x5a686c5cd35b - as core::ops::function::FnOnce>::call_once::heba5519d10f2c030 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/alloc/src/boxed.rs:1966:9 [INFO] [stdout] 44: 0x5a686c5cd35b - std::sys::pal::unix::thread::Thread::new::thread_start::h211a36f354245501 [INFO] [stdout] at /rustc/414482f6a0d4e7290f614300581a0b55442552a3/library/std/src/sys/pal/unix/thread.rs:97:17 [INFO] [stdout] 45: 0x728b8e71faa4 - [INFO] [stdout] 46: 0x728b8e7aca34 - 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 0.14s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "a512b8d63b00b12c0be106fc0f3d5d0b3afabefd7e420a019f47a1a1c410c9ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a512b8d63b00b12c0be106fc0f3d5d0b3afabefd7e420a019f47a1a1c410c9ab", kill_on_drop: false }` [INFO] [stdout] a512b8d63b00b12c0be106fc0f3d5d0b3afabefd7e420a019f47a1a1c410c9ab