[INFO] cloning repository https://github.com/rafaph/rustlings-solutions [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rafaph/rustlings-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafaph%2Frustlings-solutions", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafaph%2Frustlings-solutions'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8a22f500f8fc665a511158b829af6176f9eeffec [INFO] testing rafaph/rustlings-solutions against master#1ddedbaa5919b7b3e70d984660e21e844c615c97 for pr-128400 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafaph%2Frustlings-solutions" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rafaph/rustlings-solutions 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/rafaph/rustlings-solutions [INFO] finished tweaking git repo https://github.com/rafaph/rustlings-solutions [INFO] tweaked toml for git repo https://github.com/rafaph/rustlings-solutions written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/rafaph/rustlings-solutions 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 94ae6d76d8873ee7494102de0ba361e61dd6a43b61192bf9810efbe1f039a38d [INFO] running `Command { std: "docker" "start" "-a" "94ae6d76d8873ee7494102de0ba361e61dd6a43b61192bf9810efbe1f039a38d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "94ae6d76d8873ee7494102de0ba361e61dd6a43b61192bf9810efbe1f039a38d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94ae6d76d8873ee7494102de0ba361e61dd6a43b61192bf9810efbe1f039a38d", kill_on_drop: false }` [INFO] [stdout] 94ae6d76d8873ee7494102de0ba361e61dd6a43b61192bf9810efbe1f039a38d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a8efb84921457fa4df5d9b40d223e9d109f785f7b37e249fd7e7f46807c123de [INFO] running `Command { std: "docker" "start" "-a" "a8efb84921457fa4df5d9b40d223e9d109f785f7b37e249fd7e7f46807c123de", 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 log v0.4.14 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling 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 inotify v0.7.1 [INFO] [stderr] Compiling mio v0.6.23 [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 v5.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.57s [INFO] running `Command { std: "docker" "inspect" "a8efb84921457fa4df5d9b40d223e9d109f785f7b37e249fd7e7f46807c123de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a8efb84921457fa4df5d9b40d223e9d109f785f7b37e249fd7e7f46807c123de", kill_on_drop: false }` [INFO] [stdout] a8efb84921457fa4df5d9b40d223e9d109f785f7b37e249fd7e7f46807c123de [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cb8434bd7067fcde1904d192d74c05a9f83fff1780c4fd3efc13cdc036d42b86 [INFO] running `Command { std: "docker" "start" "-a" "cb8434bd7067fcde1904d192d74c05a9f83fff1780c4fd3efc13cdc036d42b86", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling difference v2.0.0 [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 v5.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.75s [INFO] running `Command { std: "docker" "inspect" "cb8434bd7067fcde1904d192d74c05a9f83fff1780c4fd3efc13cdc036d42b86", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb8434bd7067fcde1904d192d74c05a9f83fff1780c4fd3efc13cdc036d42b86", kill_on_drop: false }` [INFO] [stdout] cb8434bd7067fcde1904d192d74c05a9f83fff1780c4fd3efc13cdc036d42b86 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 0845914e89a4cb5985f19b6094ad4755a84ca99750569532555c8cfa7c4ee17f [INFO] running `Command { std: "docker" "start" "-a" "0845914e89a4cb5985f19b6094ad4755a84ca99750569532555c8cfa7c4ee17f", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-5c27a22d2fce9011) [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: 0x564589db9155 - std::backtrace_rs::backtrace::libunwind::trace::hdfc9607bf31dbc86 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x564589db9155 - std::backtrace_rs::backtrace::trace_unsynchronized::h835e0ca3083fcb54 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x564589db9155 - std::sys::backtrace::_print_fmt::hf81d1bed8dde1f05 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x564589db9155 - ::fmt::h0e21387e4dc195e8 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x564589de05fb - core::fmt::rt::Argument::fmt::hf0a2360aea19729b [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x564589de05fb - core::fmt::write::h76a391ed15942408 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/mod.rs:1178:21 [INFO] [stdout] 6: 0x564589db644f - std::io::Write::write_fmt::h3a6701c05eae4e21 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/io/mod.rs:1823:15 [INFO] [stdout] 7: 0x564589dba971 - std::sys::backtrace::BacktraceLock::print::hfbac027926ddf935 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x564589dba971 - std::panicking::default_hook::{{closure}}::h901010a60b64ccc3 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:266:22 [INFO] [stdout] 9: 0x564589dba518 - std::panicking::default_hook::had7425277af071c7 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:290:9 [INFO] [stdout] 10: 0x564589c3435a - as core::ops::function::Fn>::call::h0e74b18ddebb72fa [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 11: 0x564589c3435a - test::test_main::{{closure}}::he27b357a2172d646 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:132:21 [INFO] [stdout] 12: 0x564589dbb27f - as core::ops::function::Fn>::call::ha2e26086c015e62d [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 13: 0x564589dbb27f - std::panicking::rust_panic_with_hook::hac0e92610e1e4d1b [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:805:13 [INFO] [stdout] 14: 0x564589dbaea7 - std::panicking::begin_panic_handler::{{closure}}::h1fb6563ca25c0091 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:671:13 [INFO] [stdout] 15: 0x564589db9619 - std::sys::backtrace::__rust_end_short_backtrace::he90d714ee124ec57 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x564589dbab34 - rust_begin_unwind [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:662:5 [INFO] [stdout] 17: 0x564589ddeef3 - core::panicking::panic_fmt::h2c076b2ed9eeb82c [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panicking.rs:74:14 [INFO] [stdout] 18: 0x564589ddf446 - core::result::unwrap_failed::h0be6dd1a77884bef [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1679:5 [INFO] [stdout] 19: 0x564589bf765a - core::result::Result::unwrap::h5f6da7371c0331dd [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1102:23 [INFO] [stdout] 20: 0x564589bf765a - rustlings::exercise::test::test_clean::hdfb25cfb22d11816 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:9 [INFO] [stdout] 21: 0x564589bf7597 - rustlings::exercise::test::test_clean::{{closure}}::he9d571fb2b7d2af3 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 22: 0x564589bf4c56 - core::ops::function::FnOnce::call_once::h7f767f0753bc7dd6 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x564589c38e2b - core::ops::function::FnOnce::call_once::hca6bde12b6a630f1 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x564589c38e2b - test::__rust_begin_short_backtrace::h12810d14a702ebbc [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:620:18 [INFO] [stdout] 25: 0x564589c386f5 - test::run_test_in_process::{{closure}}::h59541574124f7772 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:643:60 [INFO] [stdout] 26: 0x564589c386f5 - as core::ops::function::FnOnce<()>>::call_once::h21b81f6278222813 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x564589c386f5 - std::panicking::try::do_call::h95caa0508e76e60a [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:554:40 [INFO] [stdout] 28: 0x564589c386f5 - std::panicking::try::ha936e1facd3a2c2c [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:518:19 [INFO] [stdout] 29: 0x564589c386f5 - std::panic::catch_unwind::h5528768c35d92b58 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panic.rs:345:14 [INFO] [stdout] 30: 0x564589c386f5 - test::run_test_in_process::h90d0fae4cc0656ab [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:643:27 [INFO] [stdout] 31: 0x564589c386f5 - test::run_test::{{closure}}::hd832ed1086168438 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:564:43 [INFO] [stdout] 32: 0x564589bfdfc4 - test::run_test::{{closure}}::h9fadb9f2ff3418ff [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:594:41 [INFO] [stdout] 33: 0x564589bfdfc4 - std::sys::backtrace::__rust_begin_short_backtrace::h83762f6f2409a243 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x564589c01792 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h30150ce916fdd544 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:524:17 [INFO] [stdout] 35: 0x564589c01792 - as core::ops::function::FnOnce<()>>::call_once::hc325bc97006a5368 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x564589c01792 - std::panicking::try::do_call::h3c463856408c67a4 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:554:40 [INFO] [stdout] 37: 0x564589c01792 - std::panicking::try::h692f72559df6d3bf [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:518:19 [INFO] [stdout] 38: 0x564589c01792 - std::panic::catch_unwind::h1dcc0ad4c36d774e [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panic.rs:345:14 [INFO] [stdout] 39: 0x564589c01792 - std::thread::Builder::spawn_unchecked_::{{closure}}::hc95846b45d8ce7ce [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:523:30 [INFO] [stdout] 40: 0x564589c01792 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h802463e6db21440a [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x564589dbf5ab - as core::ops::function::FnOnce>::call_once::h186f3f12fe64acb3 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 42: 0x564589dbf5ab - as core::ops::function::FnOnce>::call_once::h58b0e3febdb462cc [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 43: 0x564589dbf5ab - std::sys::pal::unix::thread::Thread::new::thread_start::h146ca4d6d16f256f [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x7f9890682ac3 - [INFO] [stdout] 45: 0x7f9890713a04 - 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/./rmetatdjGof\"\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: 0x564589db9155 - std::backtrace_rs::backtrace::libunwind::trace::hdfc9607bf31dbc86 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x564589db9155 - std::backtrace_rs::backtrace::trace_unsynchronized::h835e0ca3083fcb54 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x564589db9155 - std::sys::backtrace::_print_fmt::hf81d1bed8dde1f05 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x564589db9155 - ::fmt::h0e21387e4dc195e8 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x564589de05fb - core::fmt::rt::Argument::fmt::hf0a2360aea19729b [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x564589de05fb - core::fmt::write::h76a391ed15942408 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/fmt/mod.rs:1178:21 [INFO] [stdout] 6: 0x564589db644f - std::io::Write::write_fmt::h3a6701c05eae4e21 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/io/mod.rs:1823:15 [INFO] [stdout] 7: 0x564589dba971 - std::sys::backtrace::BacktraceLock::print::hfbac027926ddf935 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x564589dba971 - std::panicking::default_hook::{{closure}}::h901010a60b64ccc3 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:266:22 [INFO] [stdout] 9: 0x564589dba518 - std::panicking::default_hook::had7425277af071c7 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:290:9 [INFO] [stdout] 10: 0x564589c3435a - as core::ops::function::Fn>::call::h0e74b18ddebb72fa [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 11: 0x564589c3435a - test::test_main::{{closure}}::he27b357a2172d646 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:132:21 [INFO] [stdout] 12: 0x564589dbb27f - as core::ops::function::Fn>::call::ha2e26086c015e62d [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2162:9 [INFO] [stdout] 13: 0x564589dbb27f - std::panicking::rust_panic_with_hook::hac0e92610e1e4d1b [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:805:13 [INFO] [stdout] 14: 0x564589dbaea7 - std::panicking::begin_panic_handler::{{closure}}::h1fb6563ca25c0091 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:671:13 [INFO] [stdout] 15: 0x564589db9619 - std::sys::backtrace::__rust_end_short_backtrace::he90d714ee124ec57 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:170:18 [INFO] [stdout] 16: 0x564589dbab34 - rust_begin_unwind [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:662:5 [INFO] [stdout] 17: 0x564589ddeef3 - core::panicking::panic_fmt::h2c076b2ed9eeb82c [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panicking.rs:74:14 [INFO] [stdout] 18: 0x564589ddf446 - core::result::unwrap_failed::h0be6dd1a77884bef [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1679:5 [INFO] [stdout] 19: 0x564589bf84ba - core::result::Result::unwrap::h30b2395ce25fbd3f [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/result.rs:1102:23 [INFO] [stdout] 20: 0x564589bf84ba - rustlings::exercise::test::test_exercise_with_output::hb38288ae100b65fa [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:19 [INFO] [stdout] 21: 0x564589bf82c7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hc73763ca51898b72 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 22: 0x564589bf4b76 - core::ops::function::FnOnce::call_once::h33187a8cd2292dd4 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x564589c38e2b - core::ops::function::FnOnce::call_once::hca6bde12b6a630f1 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x564589c38e2b - test::__rust_begin_short_backtrace::h12810d14a702ebbc [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:620:18 [INFO] [stdout] 25: 0x564589c386f5 - test::run_test_in_process::{{closure}}::h59541574124f7772 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:643:60 [INFO] [stdout] 26: 0x564589c386f5 - as core::ops::function::FnOnce<()>>::call_once::h21b81f6278222813 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x564589c386f5 - std::panicking::try::do_call::h95caa0508e76e60a [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:554:40 [INFO] [stdout] 28: 0x564589c386f5 - std::panicking::try::ha936e1facd3a2c2c [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:518:19 [INFO] [stdout] 29: 0x564589c386f5 - std::panic::catch_unwind::h5528768c35d92b58 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panic.rs:345:14 [INFO] [stdout] 30: 0x564589c386f5 - test::run_test_in_process::h90d0fae4cc0656ab [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:643:27 [INFO] [stdout] 31: 0x564589c386f5 - test::run_test::{{closure}}::hd832ed1086168438 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:564:43 [INFO] [stdout] 32: 0x564589bfdfc4 - test::run_test::{{closure}}::h9fadb9f2ff3418ff [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/test/src/lib.rs:594:41 [INFO] [stdout] 33: 0x564589bfdfc4 - std::sys::backtrace::__rust_begin_short_backtrace::h83762f6f2409a243 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/backtrace.rs:154:18 [INFO] [stdout] 34: 0x564589c01792 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h30150ce916fdd544 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:524:17 [INFO] [stdout] 35: 0x564589c01792 - as core::ops::function::FnOnce<()>>::call_once::hc325bc97006a5368 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x564589c01792 - std::panicking::try::do_call::h3c463856408c67a4 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:554:40 [INFO] [stdout] 37: 0x564589c01792 - std::panicking::try::h692f72559df6d3bf [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panicking.rs:518:19 [INFO] [stdout] 38: 0x564589c01792 - std::panic::catch_unwind::h1dcc0ad4c36d774e [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/panic.rs:345:14 [INFO] [stdout] 39: 0x564589c01792 - std::thread::Builder::spawn_unchecked_::{{closure}}::hc95846b45d8ce7ce [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/thread/mod.rs:523:30 [INFO] [stdout] 40: 0x564589c01792 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h802463e6db21440a [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x564589dbf5ab - as core::ops::function::FnOnce>::call_once::h186f3f12fe64acb3 [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 42: 0x564589dbf5ab - as core::ops::function::FnOnce>::call_once::h58b0e3febdb462cc [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/alloc/src/boxed.rs:2148:9 [INFO] [stdout] 43: 0x564589dbf5ab - std::sys::pal::unix::thread::Thread::new::thread_start::h146ca4d6d16f256f [INFO] [stdout] at /rustc/1ddedbaa5919b7b3e70d984660e21e844c615c97/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x7f9890682ac3 - [INFO] [stdout] 45: 0x7f9890713a04 - 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 0.04s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "0845914e89a4cb5985f19b6094ad4755a84ca99750569532555c8cfa7c4ee17f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0845914e89a4cb5985f19b6094ad4755a84ca99750569532555c8cfa7c4ee17f", kill_on_drop: false }` [INFO] [stdout] 0845914e89a4cb5985f19b6094ad4755a84ca99750569532555c8cfa7c4ee17f