[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-Sakura125809 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-Sakura125809" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-Sakura125809", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-Sakura125809'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 73c74a8642de8e860398b5c22ef0c161ca868b70 [INFO] testing LearningOS/rust-rustlings-Sakura125809 against master#1ddedbaa5919b7b3e70d984660e21e844c615c97 for pr-128400 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-Sakura125809" "/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/rust-rustlings-Sakura125809 on toolchain 1ddedbaa5919b7b3e70d984660e21e844c615c97 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 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" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] testing LearningOS/rust-rustlings-Sakura125809 against try#33f1d8bb92813a1bfc23c093c9f443ab09290307 for pr-128400 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-Sakura125809" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 on toolchain 33f1d8bb92813a1bfc23c093c9f443ab09290307 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-Sakura125809 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" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5a8f6a6aaa97f5a805dc91cd88078076cf0737e99e80938c24e9a37e6054e4d6 [INFO] running `Command { std: "docker" "start" "-a" "5a8f6a6aaa97f5a805dc91cd88078076cf0737e99e80938c24e9a37e6054e4d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5a8f6a6aaa97f5a805dc91cd88078076cf0737e99e80938c24e9a37e6054e4d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a8f6a6aaa97f5a805dc91cd88078076cf0737e99e80938c24e9a37e6054e4d6", kill_on_drop: false }` [INFO] [stdout] 5a8f6a6aaa97f5a805dc91cd88078076cf0737e99e80938c24e9a37e6054e4d6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7bd7216eda213ef141ae2f13c70d55768927b667f9e9d1e00cb821dea2eaffcd [INFO] running `Command { std: "docker" "start" "-a" "7bd7216eda213ef141ae2f13c70d55768927b667f9e9d1e00cb821dea2eaffcd", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.137 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling parking_lot_core v0.9.4 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling tokio v1.21.2 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling bytes v1.2.1 [INFO] [stderr] Compiling pin-project-lite v0.2.9 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling quote v1.0.9 [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 inotify-sys v0.1.5 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling socket2 v0.4.7 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling mio v0.8.5 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling tokio-macros v1.8.0 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.5.9 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.32s [INFO] running `Command { std: "docker" "inspect" "7bd7216eda213ef141ae2f13c70d55768927b667f9e9d1e00cb821dea2eaffcd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7bd7216eda213ef141ae2f13c70d55768927b667f9e9d1e00cb821dea2eaffcd", kill_on_drop: false }` [INFO] [stdout] 7bd7216eda213ef141ae2f13c70d55768927b667f9e9d1e00cb821dea2eaffcd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dffff6245601853b64ddbc11d67f6fbbf31caeb99d782b8f5ba72223dc2be2dc [INFO] running `Command { std: "docker" "start" "-a" "dffff6245601853b64ddbc11d67f6fbbf31caeb99d782b8f5ba72223dc2be2dc", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 2.57s [INFO] running `Command { std: "docker" "inspect" "dffff6245601853b64ddbc11d67f6fbbf31caeb99d782b8f5ba72223dc2be2dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dffff6245601853b64ddbc11d67f6fbbf31caeb99d782b8f5ba72223dc2be2dc", kill_on_drop: false }` [INFO] [stdout] dffff6245601853b64ddbc11d67f6fbbf31caeb99d782b8f5ba72223dc2be2dc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 914cbb768316e71d84392d5ae5b9ca180f2f6d1279f52acb8917661435259aea [INFO] running `Command { std: "docker" "start" "-a" "914cbb768316e71d84392d5ae5b9ca180f2f6d1279f52acb8917661435259aea", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-0da0eebcf6579f30) [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: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: 0x55ca7c0eeeb5 - std::backtrace_rs::backtrace::libunwind::trace::h644651cb29d88bb0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x55ca7c0eeeb5 - std::backtrace_rs::backtrace::trace_unsynchronized::h4f227a4714c93f22 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55ca7c0eeeb5 - std::sys::backtrace::_print_fmt::hfe88767e38ff4b4e [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x55ca7c0eeeb5 - ::fmt::h0e27af9f1d310e0a [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x55ca7c11635b - core::fmt::rt::Argument::fmt::h900f10175a69b72e [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x55ca7c11635b - core::fmt::write::h3a97e76bd9b733fa [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/fmt/mod.rs:1178:21 [INFO] [stdout] 6: 0x55ca7c0ec25f - std::io::Write::write_fmt::he4611995baa28da3 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/io/mod.rs:1823:15 [INFO] [stdout] 7: 0x55ca7c0f06d1 - std::sys::backtrace::BacktraceLock::print::h52f15558f43bfe2f [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x55ca7c0f06d1 - std::panicking::default_hook::{{closure}}::h77edc81607b06015 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:266:22 [INFO] [stdout] 9: 0x55ca7c0f0278 - std::panicking::default_hook::h4a889c281e863e6e [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:290:9 [INFO] [stdout] 10: 0x55ca7bf6b1ca - as core::ops::function::Fn>::call::h87ae598a6618f03f [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 11: 0x55ca7bf6b1ca - test::test_main::{{closure}}::haa35c2695dfcc048 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:132:21 [INFO] [stdout] 12: 0x55ca7c0f0fdf - as core::ops::function::Fn>::call::h0934a01d4a1cdb06 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 13: 0x55ca7c0f0fdf - std::panicking::rust_panic_with_hook::h74d8fff54c965152 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:805:13 [INFO] [stdout] 14: 0x55ca7c0f0c07 - std::panicking::begin_panic_handler::{{closure}}::h82b61517a14ab3ae [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:671:13 [INFO] [stdout] 15: 0x55ca7c0ef379 - std::sys::backtrace::__rust_end_short_backtrace::h7f24a51d7748d3e4 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x55ca7c0f0894 - rust_begin_unwind [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:662:5 [INFO] [stdout] 17: 0x55ca7c114c53 - core::panicking::panic_fmt::h7de3a20d92caa6a2 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/panicking.rs:74:14 [INFO] [stdout] 18: 0x55ca7c1151a6 - core::result::unwrap_failed::hbfce3c09bc996f11 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/result.rs:1679:5 [INFO] [stdout] 19: 0x55ca7bf2adca - core::result::Result::unwrap::ha1a35613d943ac3b [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/result.rs:1102:23 [INFO] [stdout] 20: 0x55ca7bf2adca - rustlings::exercise::test::test_clean::hee6e689328a991d7 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:9 [INFO] [stdout] 21: 0x55ca7bf2ad07 - rustlings::exercise::test::test_clean::{{closure}}::h1ac25d846a3a4c54 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 22: 0x55ca7bf28086 - core::ops::function::FnOnce::call_once::h0a65b3fe7026dd1e [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x55ca7bf6fd4b - core::ops::function::FnOnce::call_once::h24a6f01be65f4680 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55ca7bf6fd4b - test::__rust_begin_short_backtrace::h7c53016b80d5a608 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:620:18 [INFO] [stdout] 25: 0x55ca7bf6f565 - test::run_test_in_process::{{closure}}::hde6a274ce897aaad [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:643:60 [INFO] [stdout] 26: 0x55ca7bf6f565 - as core::ops::function::FnOnce<()>>::call_once::hd431ac2f54963786 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x55ca7bf6f565 - std::panicking::try::do_call::h10362e01a063baa0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:554:40 [INFO] [stdout] 28: 0x55ca7bf6f565 - std::panicking::try::h30318180e4290dce [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:518:19 [INFO] [stdout] 29: 0x55ca7bf6f565 - std::panic::catch_unwind::h97d52b1b1f400ecc [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panic.rs:345:14 [INFO] [stdout] 30: 0x55ca7bf6f565 - test::run_test_in_process::haec7bb1f728b765d [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:643:27 [INFO] [stdout] 31: 0x55ca7bf6f565 - test::run_test::{{closure}}::ha988a53ee25f80e1 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:564:43 [INFO] [stdout] 32: 0x55ca7bf34e34 - test::run_test::{{closure}}::hddc4d91f14475af0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:594:41 [INFO] [stdout] 33: 0x55ca7bf34e34 - std::sys::backtrace::__rust_begin_short_backtrace::h550bd80387fd32b0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x55ca7bf38562 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h0907e6530d89c432 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/thread/mod.rs:524:17 [INFO] [stdout] 35: 0x55ca7bf38562 - as core::ops::function::FnOnce<()>>::call_once::h1426168782d20988 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x55ca7bf38562 - std::panicking::try::do_call::h9e10c7df8de701e0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:554:40 [INFO] [stdout] 37: 0x55ca7bf38562 - std::panicking::try::hc0169bb633716dc9 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:518:19 [INFO] [stdout] 38: 0x55ca7bf38562 - std::panic::catch_unwind::h2d365a7fbba378ff [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panic.rs:345:14 [INFO] [stdout] 39: 0x55ca7bf38562 - std::thread::Builder::spawn_unchecked_::{{closure}}::h99b3d5b0eb8d8349 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/thread/mod.rs:523:30 [INFO] [stdout] 40: 0x55ca7bf38562 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h785f99837c772588 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x55ca7c0f530b - as core::ops::function::FnOnce>::call_once::h9d8f2204f4fcbe73 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 42: 0x55ca7c0f530b - as core::ops::function::FnOnce>::call_once::h817ffd7b41f007e2 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 43: 0x55ca7c0f530b - std::sys::pal::unix::thread::Thread::new::thread_start::hfffda88b0cd3e69f [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x7f675500aac3 - [INFO] [stdout] 45: 0x7f675509ba04 - 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: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/./rmetaIyNJLo\"\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: 0x55ca7c0eeeb5 - std::backtrace_rs::backtrace::libunwind::trace::h644651cb29d88bb0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x55ca7c0eeeb5 - std::backtrace_rs::backtrace::trace_unsynchronized::h4f227a4714c93f22 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55ca7c0eeeb5 - std::sys::backtrace::_print_fmt::hfe88767e38ff4b4e [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x55ca7c0eeeb5 - ::fmt::h0e27af9f1d310e0a [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x55ca7c11635b - core::fmt::rt::Argument::fmt::h900f10175a69b72e [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x55ca7c11635b - core::fmt::write::h3a97e76bd9b733fa [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/fmt/mod.rs:1178:21 [INFO] [stdout] 6: 0x55ca7c0ec25f - std::io::Write::write_fmt::he4611995baa28da3 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/io/mod.rs:1823:15 [INFO] [stdout] 7: 0x55ca7c0f06d1 - std::sys::backtrace::BacktraceLock::print::h52f15558f43bfe2f [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x55ca7c0f06d1 - std::panicking::default_hook::{{closure}}::h77edc81607b06015 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:266:22 [INFO] [stdout] 9: 0x55ca7c0f0278 - std::panicking::default_hook::h4a889c281e863e6e [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:290:9 [INFO] [stdout] 10: 0x55ca7bf6b1ca - as core::ops::function::Fn>::call::h87ae598a6618f03f [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 11: 0x55ca7bf6b1ca - test::test_main::{{closure}}::haa35c2695dfcc048 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:132:21 [INFO] [stdout] 12: 0x55ca7c0f0fdf - as core::ops::function::Fn>::call::h0934a01d4a1cdb06 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 13: 0x55ca7c0f0fdf - std::panicking::rust_panic_with_hook::h74d8fff54c965152 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:805:13 [INFO] [stdout] 14: 0x55ca7c0f0c07 - std::panicking::begin_panic_handler::{{closure}}::h82b61517a14ab3ae [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:671:13 [INFO] [stdout] 15: 0x55ca7c0ef379 - std::sys::backtrace::__rust_end_short_backtrace::h7f24a51d7748d3e4 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x55ca7c0f0894 - rust_begin_unwind [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:662:5 [INFO] [stdout] 17: 0x55ca7c114c53 - core::panicking::panic_fmt::h7de3a20d92caa6a2 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/panicking.rs:74:14 [INFO] [stdout] 18: 0x55ca7c1151a6 - core::result::unwrap_failed::hbfce3c09bc996f11 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/result.rs:1679:5 [INFO] [stdout] 19: 0x55ca7bf2bc2a - core::result::Result::unwrap::hfafafcd0cd580c71 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/result.rs:1102:23 [INFO] [stdout] 20: 0x55ca7bf2bc2a - rustlings::exercise::test::test_exercise_with_output::ha84898f9ad22c0d6 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:19 [INFO] [stdout] 21: 0x55ca7bf2ba37 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h997010ef41f9233f [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 22: 0x55ca7bf280c6 - core::ops::function::FnOnce::call_once::h20116f3f2e5cfa7a [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x55ca7bf6fd4b - core::ops::function::FnOnce::call_once::h24a6f01be65f4680 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55ca7bf6fd4b - test::__rust_begin_short_backtrace::h7c53016b80d5a608 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:620:18 [INFO] [stdout] 25: 0x55ca7bf6f565 - test::run_test_in_process::{{closure}}::hde6a274ce897aaad [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:643:60 [INFO] [stdout] 26: 0x55ca7bf6f565 - as core::ops::function::FnOnce<()>>::call_once::hd431ac2f54963786 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x55ca7bf6f565 - std::panicking::try::do_call::h10362e01a063baa0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:554:40 [INFO] [stdout] 28: 0x55ca7bf6f565 - std::panicking::try::h30318180e4290dce [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:518:19 [INFO] [stdout] 29: 0x55ca7bf6f565 - std::panic::catch_unwind::h97d52b1b1f400ecc [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panic.rs:345:14 [INFO] [stdout] 30: 0x55ca7bf6f565 - test::run_test_in_process::haec7bb1f728b765d [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:643:27 [INFO] [stdout] 31: 0x55ca7bf6f565 - test::run_test::{{closure}}::ha988a53ee25f80e1 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:564:43 [INFO] [stdout] 32: 0x55ca7bf34e34 - test::run_test::{{closure}}::hddc4d91f14475af0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/test/src/lib.rs:594:41 [INFO] [stdout] 33: 0x55ca7bf34e34 - std::sys::backtrace::__rust_begin_short_backtrace::h550bd80387fd32b0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x55ca7bf38562 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h0907e6530d89c432 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/thread/mod.rs:524:17 [INFO] [stdout] 35: 0x55ca7bf38562 - as core::ops::function::FnOnce<()>>::call_once::h1426168782d20988 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x55ca7bf38562 - std::panicking::try::do_call::h9e10c7df8de701e0 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:554:40 [INFO] [stdout] 37: 0x55ca7bf38562 - std::panicking::try::hc0169bb633716dc9 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panicking.rs:518:19 [INFO] [stdout] 38: 0x55ca7bf38562 - std::panic::catch_unwind::h2d365a7fbba378ff [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/panic.rs:345:14 [INFO] [stdout] 39: 0x55ca7bf38562 - std::thread::Builder::spawn_unchecked_::{{closure}}::h99b3d5b0eb8d8349 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/thread/mod.rs:523:30 [INFO] [stdout] 40: 0x55ca7bf38562 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h785f99837c772588 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x55ca7c0f530b - as core::ops::function::FnOnce>::call_once::h9d8f2204f4fcbe73 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 42: 0x55ca7c0f530b - as core::ops::function::FnOnce>::call_once::h817ffd7b41f007e2 [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 43: 0x55ca7c0f530b - std::sys::pal::unix::thread::Thread::new::thread_start::hfffda88b0cd3e69f [INFO] [stdout] at /rustc/33f1d8bb92813a1bfc23c093c9f443ab09290307/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x7f675500aac3 - [INFO] [stdout] 45: 0x7f675509ba04 - 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 0.11s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "914cbb768316e71d84392d5ae5b9ca180f2f6d1279f52acb8917661435259aea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "914cbb768316e71d84392d5ae5b9ca180f2f6d1279f52acb8917661435259aea", kill_on_drop: false }` [INFO] [stdout] 914cbb768316e71d84392d5ae5b9ca180f2f6d1279f52acb8917661435259aea