[INFO] cloning repository https://github.com/ZiHao256/Rustlings_My [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZiHao256/Rustlings_My" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZiHao256%2FRustlings_My", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZiHao256%2FRustlings_My'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f4ae0ec3bb503edfd67bdc9e397147c2633a4ee3 [INFO] testing ZiHao256/Rustlings_My against try#9ce6b522e9d830b1461df3e1b001b5831bd32346 for pr-101061-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZiHao256%2FRustlings_My" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ZiHao256/Rustlings_My on toolchain 9ce6b522e9d830b1461df3e1b001b5831bd32346 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ZiHao256/Rustlings_My [INFO] finished tweaking git repo https://github.com/ZiHao256/Rustlings_My [INFO] tweaked toml for git repo https://github.com/ZiHao256/Rustlings_My written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/ZiHao256/Rustlings_My already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d5f21f7d6cac84c9394bd652439356ab41ba6b111518c99d53e3267443a549f8 [INFO] running `Command { std: "docker" "start" "-a" "d5f21f7d6cac84c9394bd652439356ab41ba6b111518c99d53e3267443a549f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d5f21f7d6cac84c9394bd652439356ab41ba6b111518c99d53e3267443a549f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d5f21f7d6cac84c9394bd652439356ab41ba6b111518c99d53e3267443a549f8", kill_on_drop: false }` [INFO] [stdout] d5f21f7d6cac84c9394bd652439356ab41ba6b111518c99d53e3267443a549f8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b96c75892d1550b211815cff0e7fe9804da0da8d7c5a3579ff6a110a2ba01a41 [INFO] running `Command { std: "docker" "start" "-a" "b96c75892d1550b211815cff0e7fe9804da0da8d7c5a3579ff6a110a2ba01a41", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.26 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.70 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling regex-syntax v0.6.23 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling serde_derive v1.0.125 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling unicode-segmentation v1.7.1 [INFO] [stderr] Compiling instant v0.1.9 [INFO] [stderr] Compiling slab v0.4.3 [INFO] [stderr] Compiling serde v1.0.125 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling lock_api v0.4.3 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling argh_shared v0.1.4 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling heck v0.3.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling aho-corasick v0.7.15 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling terminal_size v0.1.16 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling filetime v0.2.14 [INFO] [stderr] Compiling termios v0.3.3 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling regex v1.4.6 [INFO] [stderr] Compiling notify v4.0.16 [INFO] [stderr] Compiling console v0.14.1 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling argh_derive v0.1.4 [INFO] [stderr] Compiling argh v0.1.4 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v4.5.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 22.17s [INFO] running `Command { std: "docker" "inspect" "b96c75892d1550b211815cff0e7fe9804da0da8d7c5a3579ff6a110a2ba01a41", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b96c75892d1550b211815cff0e7fe9804da0da8d7c5a3579ff6a110a2ba01a41", kill_on_drop: false }` [INFO] [stdout] b96c75892d1550b211815cff0e7fe9804da0da8d7c5a3579ff6a110a2ba01a41 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 41391baa808d640c1f8827404435ffb6004e83a8c19d87fe769dcbc67ee75331 [INFO] running `Command { std: "docker" "start" "-a" "41391baa808d640c1f8827404435ffb6004e83a8c19d87fe769dcbc67ee75331", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling itoa v0.4.7 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling predicates-tree v1.0.2 [INFO] [stderr] Compiling predicates v1.0.7 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v4.5.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.48s [INFO] running `Command { std: "docker" "inspect" "41391baa808d640c1f8827404435ffb6004e83a8c19d87fe769dcbc67ee75331", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "41391baa808d640c1f8827404435ffb6004e83a8c19d87fe769dcbc67ee75331", kill_on_drop: false }` [INFO] [stdout] 41391baa808d640c1f8827404435ffb6004e83a8c19d87fe769dcbc67ee75331 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b22224bd3189663980d4772e2a36888e54f4194421f9e532160206f1602faad5 [INFO] running `Command { std: "docker" "start" "-a" "b22224bd3189663980d4772e2a36888e54f4194421f9e532160206f1602faad5", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-0ade36ab647299ad) [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 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }', src/exercise.rs:270:36 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x556c5252d070 - std::backtrace_rs::backtrace::libunwind::trace::hf53d662b5c6d77d2 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 1: 0x556c5252d070 - std::backtrace_rs::backtrace::trace_unsynchronized::h6e3cf02005f608bf [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x556c5252d070 - std::sys_common::backtrace::_print_fmt::h6d567679a2265c44 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stdout] 3: 0x556c5252d070 - ::fmt::h1a668cb169fcef22 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stdout] 4: 0x556c5255043e - core::fmt::write::hd1139dfe9eec9a34 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/fmt/mod.rs:1202:17 [INFO] [stdout] 5: 0x556c52529855 - std::io::Write::write_fmt::h31ccab35c8c522b7 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/io/mod.rs:1679:15 [INFO] [stdout] 6: 0x556c5252eb33 - std::sys_common::backtrace::_print::hd3a9cd6aaf1b9c8d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stdout] 7: 0x556c5252eb33 - std::sys_common::backtrace::print::hfa27ea3e00247e12 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stdout] 8: 0x556c5252eb33 - std::panicking::default_hook::{{closure}}::h76f2cc009fc0e4ed [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:295:22 [INFO] [stdout] 9: 0x556c5252e7a3 - std::panicking::default_hook::h84e3f8d9ac8ff74e [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:311:9 [INFO] [stdout] 10: 0x556c5252f1da - std::panicking::rust_panic_with_hook::hb27f77e939cc5d74 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:698:17 [INFO] [stdout] 11: 0x556c5252f0d7 - std::panicking::begin_panic_handler::{{closure}}::h2c35a3b6ab1a1b5d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:588:13 [INFO] [stdout] 12: 0x556c5252d51c - std::sys_common::backtrace::__rust_end_short_backtrace::hdd7621cbda95655d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:138:18 [INFO] [stdout] 13: 0x556c5252edf2 - rust_begin_unwind [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:584:5 [INFO] [stdout] 14: 0x556c52345503 - core::panicking::panic_fmt::h5158c91fc6eda82a [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panicking.rs:142:14 [INFO] [stdout] 15: 0x556c52345653 - core::result::unwrap_failed::hf8c0b5c2d998e7b0 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/result.rs:1785:5 [INFO] [stdout] 16: 0x556c52348ba0 - core::result::Result::unwrap::hc75c714a51775170 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/result.rs:1107:23 [INFO] [stdout] 17: 0x556c523490a9 - rustlings::exercise::test::test_clean::h4228a8f008a93457 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:270:9 [INFO] [stdout] 18: 0x556c5234903a - rustlings::exercise::test::test_clean::{{closure}}::h28e7aa085fd77648 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:5 [INFO] [stdout] 19: 0x556c52351ede - core::ops::function::FnOnce::call_once::ha4a55a48fd72fe76 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 20: 0x556c5238bf63 - core::ops::function::FnOnce::call_once::h9295094f3a2f274a [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 21: 0x556c5238bf63 - test::__rust_begin_short_backtrace::hc4e9047c1ba46df2 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:572:5 [INFO] [stdout] 22: 0x556c5238abd0 - as core::ops::function::FnOnce>::call_once::he040c8e590211550 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/alloc/src/boxed.rs:1940:9 [INFO] [stdout] 23: 0x556c5238abd0 - as core::ops::function::FnOnce<()>>::call_once::h0d91ee9b948b825d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x556c5238abd0 - std::panicking::try::do_call::h3d19aeafa70ed723 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:492:40 [INFO] [stdout] 25: 0x556c5238abd0 - std::panicking::try::h135dabdea83a1c58 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:456:19 [INFO] [stdout] 26: 0x556c5238abd0 - std::panic::catch_unwind::hf80a8ca158b8efa5 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panic.rs:137:14 [INFO] [stdout] 27: 0x556c5238abd0 - test::run_test_in_process::hee81e4132103b2a9 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:595:18 [INFO] [stdout] 28: 0x556c5238abd0 - test::run_test::run_test_inner::{{closure}}::h727da8c02b489848 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:489:39 [INFO] [stdout] 29: 0x556c52356234 - test::run_test::run_test_inner::{{closure}}::h549d08510b19e013 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:516:37 [INFO] [stdout] 30: 0x556c52356234 - std::sys_common::backtrace::__rust_begin_short_backtrace::hacb00420d6394a74 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:122:18 [INFO] [stdout] 31: 0x556c5235bb97 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h374487babdc746a9 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/thread/mod.rs:514:17 [INFO] [stdout] 32: 0x556c5235bb97 - as core::ops::function::FnOnce<()>>::call_once::hc77d0695676286d2 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x556c5235bb97 - std::panicking::try::do_call::h9f79a627f611867c [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:492:40 [INFO] [stdout] 34: 0x556c5235bb97 - std::panicking::try::ha05fa770fe5794fa [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:456:19 [INFO] [stdout] 35: 0x556c5235bb97 - std::panic::catch_unwind::h534601d6cd2559a1 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panic.rs:137:14 [INFO] [stdout] 36: 0x556c5235bb97 - std::thread::Builder::spawn_unchecked_::{{closure}}::hc2ae2a956f19ab11 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/thread/mod.rs:513:30 [INFO] [stdout] 37: 0x556c5235bb97 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc056908992b2c711 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 38: 0x556c52533bc3 - as core::ops::function::FnOnce>::call_once::h755fdb7c937efc7f [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/alloc/src/boxed.rs:1940:9 [INFO] [stdout] 39: 0x556c52533bc3 - as core::ops::function::FnOnce>::call_once::h1e9985d975cd79fe [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/alloc/src/boxed.rs:1940:9 [INFO] [stdout] 40: 0x556c52533bc3 - std::sys::unix::thread::Thread::new::thread_start::h25c30bbf1476644a [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 41: 0x7f62d5844609 - start_thread [INFO] [stdout] 42: 0x7f62d5999133 - clone [INFO] [stdout] 43: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at '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/./rmetaM0iS9c\"\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 previous error\u{1b}[0m\n\n" }', src/exercise.rs:343:38 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x556c5252d070 - std::backtrace_rs::backtrace::libunwind::trace::hf53d662b5c6d77d2 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 1: 0x556c5252d070 - std::backtrace_rs::backtrace::trace_unsynchronized::h6e3cf02005f608bf [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x556c5252d070 - std::sys_common::backtrace::_print_fmt::h6d567679a2265c44 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stdout] 3: 0x556c5252d070 - ::fmt::h1a668cb169fcef22 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stdout] 4: 0x556c5255043e - core::fmt::write::hd1139dfe9eec9a34 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/fmt/mod.rs:1202:17 [INFO] [stdout] 5: 0x556c52529855 - std::io::Write::write_fmt::h31ccab35c8c522b7 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/io/mod.rs:1679:15 [INFO] [stdout] 6: 0x556c5252eb33 - std::sys_common::backtrace::_print::hd3a9cd6aaf1b9c8d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stdout] 7: 0x556c5252eb33 - std::sys_common::backtrace::print::hfa27ea3e00247e12 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stdout] 8: 0x556c5252eb33 - std::panicking::default_hook::{{closure}}::h76f2cc009fc0e4ed [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:295:22 [INFO] [stdout] 9: 0x556c5252e7a3 - std::panicking::default_hook::h84e3f8d9ac8ff74e [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:311:9 [INFO] [stdout] 10: 0x556c5252f1da - std::panicking::rust_panic_with_hook::hb27f77e939cc5d74 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:698:17 [INFO] [stdout] 11: 0x556c5252f0d7 - std::panicking::begin_panic_handler::{{closure}}::h2c35a3b6ab1a1b5d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:588:13 [INFO] [stdout] 12: 0x556c5252d51c - std::sys_common::backtrace::__rust_end_short_backtrace::hdd7621cbda95655d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:138:18 [INFO] [stdout] 13: 0x556c5252edf2 - rust_begin_unwind [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:584:5 [INFO] [stdout] 14: 0x556c52345503 - core::panicking::panic_fmt::h5158c91fc6eda82a [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panicking.rs:142:14 [INFO] [stdout] 15: 0x556c52345653 - core::result::unwrap_failed::hf8c0b5c2d998e7b0 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/result.rs:1785:5 [INFO] [stdout] 16: 0x556c52348b07 - core::result::Result::unwrap::h8283bf5f97b87f59 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/result.rs:1107:23 [INFO] [stdout] 17: 0x556c52349cfc - rustlings::exercise::test::test_exercise_with_output::hd6f55a7731253ecb [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:343:19 [INFO] [stdout] 18: 0x556c52349b8a - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h066b59702f9f4a17 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:336:5 [INFO] [stdout] 19: 0x556c52351fbe - core::ops::function::FnOnce::call_once::hfd70fd83a1124131 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 20: 0x556c5238bf63 - core::ops::function::FnOnce::call_once::h9295094f3a2f274a [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 21: 0x556c5238bf63 - test::__rust_begin_short_backtrace::hc4e9047c1ba46df2 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:572:5 [INFO] [stdout] 22: 0x556c5238abd0 - as core::ops::function::FnOnce>::call_once::he040c8e590211550 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/alloc/src/boxed.rs:1940:9 [INFO] [stdout] 23: 0x556c5238abd0 - as core::ops::function::FnOnce<()>>::call_once::h0d91ee9b948b825d [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x556c5238abd0 - std::panicking::try::do_call::h3d19aeafa70ed723 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:492:40 [INFO] [stdout] 25: 0x556c5238abd0 - std::panicking::try::h135dabdea83a1c58 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:456:19 [INFO] [stdout] 26: 0x556c5238abd0 - std::panic::catch_unwind::hf80a8ca158b8efa5 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panic.rs:137:14 [INFO] [stdout] 27: 0x556c5238abd0 - test::run_test_in_process::hee81e4132103b2a9 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:595:18 [INFO] [stdout] 28: 0x556c5238abd0 - test::run_test::run_test_inner::{{closure}}::h727da8c02b489848 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:489:39 [INFO] [stdout] 29: 0x556c52356234 - test::run_test::run_test_inner::{{closure}}::h549d08510b19e013 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/test/src/lib.rs:516:37 [INFO] [stdout] 30: 0x556c52356234 - std::sys_common::backtrace::__rust_begin_short_backtrace::hacb00420d6394a74 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:122:18 [INFO] [stdout] 31: 0x556c5235bb97 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h374487babdc746a9 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/thread/mod.rs:514:17 [INFO] [stdout] 32: 0x556c5235bb97 - as core::ops::function::FnOnce<()>>::call_once::hc77d0695676286d2 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x556c5235bb97 - std::panicking::try::do_call::h9f79a627f611867c [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:492:40 [INFO] [stdout] 34: 0x556c5235bb97 - std::panicking::try::ha05fa770fe5794fa [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:456:19 [INFO] [stdout] 35: 0x556c5235bb97 - std::panic::catch_unwind::h534601d6cd2559a1 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panic.rs:137:14 [INFO] [stdout] 36: 0x556c5235bb97 - std::thread::Builder::spawn_unchecked_::{{closure}}::hc2ae2a956f19ab11 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/thread/mod.rs:513:30 [INFO] [stdout] 37: 0x556c5235bb97 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc056908992b2c711 [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 38: 0x556c52533bc3 - as core::ops::function::FnOnce>::call_once::h755fdb7c937efc7f [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/alloc/src/boxed.rs:1940:9 [INFO] [stdout] 39: 0x556c52533bc3 - as core::ops::function::FnOnce>::call_once::h1e9985d975cd79fe [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/alloc/src/boxed.rs:1940:9 [INFO] [stdout] 40: 0x556c52533bc3 - std::sys::unix::thread::Thread::new::thread_start::h25c30bbf1476644a [INFO] [stdout] at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 41: 0x7f62d5844609 - start_thread [INFO] [stdout] 42: 0x7f62d5999133 - clone [INFO] [stdout] 43: 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" "b22224bd3189663980d4772e2a36888e54f4194421f9e532160206f1602faad5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b22224bd3189663980d4772e2a36888e54f4194421f9e532160206f1602faad5", kill_on_drop: false }` [INFO] [stdout] b22224bd3189663980d4772e2a36888e54f4194421f9e532160206f1602faad5