[INFO] cloning repository https://github.com/mpimblott/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mpimblott/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpimblott%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpimblott%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e28dc79c0946639089ac763de561c3248cf6a8f8 [INFO] testing mpimblott/rustlings against master#61223975d46f794466efa832bc7562b9707ecc46+rustflags=-Copt-level=3 for pr-121282 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpimblott%2Frustlings" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mpimblott/rustlings on toolchain 61223975d46f794466efa832bc7562b9707ecc46 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61223975d46f794466efa832bc7562b9707ecc46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mpimblott/rustlings [INFO] finished tweaking git repo https://github.com/mpimblott/rustlings [INFO] tweaked toml for git repo https://github.com/mpimblott/rustlings written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/mpimblott/rustlings already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61223975d46f794466efa832bc7562b9707ecc46" "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 mpimblott/rustlings against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmpimblott%2Frustlings" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mpimblott/rustlings on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mpimblott/rustlings [INFO] finished tweaking git repo https://github.com/mpimblott/rustlings [INFO] tweaked toml for git repo https://github.com/mpimblott/rustlings written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/mpimblott/rustlings already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 13f7e88dedc80afdef0957000e62072c3d2074a192db3dcd1e58aa396cca5087 [INFO] running `Command { std: "docker" "start" "-a" "13f7e88dedc80afdef0957000e62072c3d2074a192db3dcd1e58aa396cca5087", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "13f7e88dedc80afdef0957000e62072c3d2074a192db3dcd1e58aa396cca5087", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "13f7e88dedc80afdef0957000e62072c3d2074a192db3dcd1e58aa396cca5087", kill_on_drop: false }` [INFO] [stdout] 13f7e88dedc80afdef0957000e62072c3d2074a192db3dcd1e58aa396cca5087 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 23b05b84b8fa4697dd5c29d434f7e1cb28071be0267de374c7b7b46033815b8c [INFO] running `Command { std: "docker" "start" "-a" "23b05b84b8fa4697dd5c29d434f7e1cb28071be0267de374c7b7b46033815b8c", 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 serde_derive v1.0.129 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling ryu v1.0.5 [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 same-file v1.0.6 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling glob v0.3.0 [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 1m 12s [INFO] running `Command { std: "docker" "inspect" "23b05b84b8fa4697dd5c29d434f7e1cb28071be0267de374c7b7b46033815b8c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "23b05b84b8fa4697dd5c29d434f7e1cb28071be0267de374c7b7b46033815b8c", kill_on_drop: false }` [INFO] [stdout] 23b05b84b8fa4697dd5c29d434f7e1cb28071be0267de374c7b7b46033815b8c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 97a2a098cf872efb8538f169dfd707412f4c209df70dd743e834000f67ce0662 [INFO] running `Command { std: "docker" "start" "-a" "97a2a098cf872efb8538f169dfd707412f4c209df70dd743e834000f67ce0662", 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 treeline v0.1.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [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 11.85s [INFO] running `Command { std: "docker" "inspect" "97a2a098cf872efb8538f169dfd707412f4c209df70dd743e834000f67ce0662", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97a2a098cf872efb8538f169dfd707412f4c209df70dd743e834000f67ce0662", kill_on_drop: false }` [INFO] [stdout] 97a2a098cf872efb8538f169dfd707412f4c209df70dd743e834000f67ce0662 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 261d021286efb7f7f722f81c8618feeb727488e58e49f6350e96814c63161b6b [INFO] running `Command { std: "docker" "start" "-a" "261d021286efb7f7f722f81c8618feeb727488e58e49f6350e96814c63161b6b", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-77b0ddad1ddbf7fd) [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] [stderr] error: test failed, to rerun pass `--bin rustlings` [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: 0x55a818bc0d56 - std::backtrace_rs::backtrace::libunwind::trace::hbf3981e6c8a62f19 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55a818bc0d56 - std::backtrace_rs::backtrace::trace_unsynchronized::h5d13053d67c404cc [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55a818bc0d56 - std::sys_common::backtrace::_print_fmt::hd24dc5b701eaf8ad [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55a818bc0d56 - ::fmt::h1d0155c7c5a7d116 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55a818be895c - core::fmt::rt::Argument::fmt::h462c7a4781d69908 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55a818be895c - core::fmt::write::h3cadc3d0c35667c3 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55a818bbe56f - std::io::Write::write_fmt::h7b46babfe8aff3fc [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/io/mod.rs:1846:15 [INFO] [stdout] 7: 0x55a818bc0b04 - std::sys_common::backtrace::_print::h21e0ad4a03aa55df [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55a818bc0b04 - std::sys_common::backtrace::print::hb7cfd89cda9bdca7 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55a818bc27fb - std::panicking::default_hook::{{closure}}::hceb0cad555a61bc8 [INFO] [stdout] 10: 0x55a818bc24cd - std::panicking::default_hook::h00eb745c4c12778b [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55a818b22a67 - as core::ops::function::Fn>::call::h6a7083dbc9bd7b5f [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2030:9 [INFO] [stdout] 12: 0x55a818b22a67 - test::test_main::{{closure}}::h4db87ac2515c25e3 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:137:21 [INFO] [stdout] 13: 0x55a818bc2e30 - as core::ops::function::Fn>::call::hf3b7bc2e2257730b [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2030:9 [INFO] [stdout] 14: 0x55a818bc2e30 - std::panicking::rust_panic_with_hook::hccddb3269d601551 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:786:13 [INFO] [stdout] 15: 0x55a818bc2b72 - std::panicking::begin_panic_handler::{{closure}}::h1759cdf989495c64 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:660:13 [INFO] [stdout] 16: 0x55a818bc1236 - std::sys_common::backtrace::__rust_end_short_backtrace::h209794238b4d13a4 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55a818bc28a4 - rust_begin_unwind [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:648:5 [INFO] [stdout] 18: 0x55a818ae8115 - core::panicking::panic_fmt::ha17ebef8fbaa0a3e [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55a818ae8603 - core::result::unwrap_failed::h4921228b49be0fef [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/result.rs:1653:5 [INFO] [stdout] 20: 0x55a818ae8fe8 - core::result::Result::unwrap::h118860ccbe54da39 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/result.rs:1077:23 [INFO] [stdout] 21: 0x55a818ae8fe8 - rustlings::exercise::test::test_clean::hd1658735b9f73468 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:9 [INFO] [stdout] 22: 0x55a818aede99 - rustlings::exercise::test::test_clean::{{closure}}::hf97fa545fb206bd8 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x55a818aede99 - core::ops::function::FnOnce::call_once::hfc224b60dd6b5e9b [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55a818b2826f - core::ops::function::FnOnce::call_once::hb293dddd1a0c8d0c [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55a818b2826f - test::__rust_begin_short_backtrace::hcc33cf50a0d42744 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:620:18 [INFO] [stdout] 26: 0x55a818b26de0 - test::run_test_in_process::{{closure}}::h1a67b8b225cf5559 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:643:60 [INFO] [stdout] 27: 0x55a818b26de0 - as core::ops::function::FnOnce<()>>::call_once::h6c8366f6b1a529d0 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55a818b26de0 - std::panicking::try::do_call::h3ac771f4eea356d5 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:555:40 [INFO] [stdout] 29: 0x55a818b26de0 - std::panicking::try::h2b1799e4f57e5bcf [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:519:19 [INFO] [stdout] 30: 0x55a818b26de0 - std::panic::catch_unwind::h0a3cc3fea72ac271 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55a818b26de0 - test::run_test_in_process::h47356101e0c4cc43 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:643:27 [INFO] [stdout] 32: 0x55a818b26de0 - test::run_test::{{closure}}::hfc86d13e98ee1936 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:566:43 [INFO] [stdout] 33: 0x55a818aef123 - test::run_test::{{closure}}::h077c30ad86447616 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:594:41 [INFO] [stdout] 34: 0x55a818aef123 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7a0647371687c548 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55a818af3dbf - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h0ade0df8a561803e [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/thread/mod.rs:528:17 [INFO] [stdout] 36: 0x55a818af3dbf - as core::ops::function::FnOnce<()>>::call_once::h94e6781319385c1d [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55a818af3dbf - std::panicking::try::do_call::h2d8e7d2812ed142e [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:555:40 [INFO] [stdout] 38: 0x55a818af3dbf - std::panicking::try::hfec8a6adb9bfcaea [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:519:19 [INFO] [stdout] 39: 0x55a818af3dbf - std::panic::catch_unwind::hf488fb91a41eb5b5 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55a818af3dbf - std::thread::Builder::spawn_unchecked_::{{closure}}::h306975a3cadd5153 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/thread/mod.rs:527:30 [INFO] [stdout] 41: 0x55a818af3dbf - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4f4ed26f27d558ae [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55a818bc7285 - as core::ops::function::FnOnce>::call_once::h17d6fdbdde1f730c [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2016:9 [INFO] [stdout] 43: 0x55a818bc7285 - as core::ops::function::FnOnce>::call_once::h298d88b0d0cf4d06 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2016:9 [INFO] [stdout] 44: 0x55a818bc7285 - std::sys::pal::unix::thread::Thread::new::thread_start::h1ecd97591626fa72 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys/pal/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7fc11c66fac3 - [INFO] [stdout] 46: 0x7fc11c700bf4 - __clone [INFO] [stdout] 47: 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/./rmeta2qeKZv\"\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: 0x55a818bc0d56 - std::backtrace_rs::backtrace::libunwind::trace::hbf3981e6c8a62f19 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55a818bc0d56 - std::backtrace_rs::backtrace::trace_unsynchronized::h5d13053d67c404cc [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55a818bc0d56 - std::sys_common::backtrace::_print_fmt::hd24dc5b701eaf8ad [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55a818bc0d56 - ::fmt::h1d0155c7c5a7d116 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55a818be895c - core::fmt::rt::Argument::fmt::h462c7a4781d69908 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55a818be895c - core::fmt::write::h3cadc3d0c35667c3 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55a818bbe56f - std::io::Write::write_fmt::h7b46babfe8aff3fc [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/io/mod.rs:1846:15 [INFO] [stdout] 7: 0x55a818bc0b04 - std::sys_common::backtrace::_print::h21e0ad4a03aa55df [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55a818bc0b04 - std::sys_common::backtrace::print::hb7cfd89cda9bdca7 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55a818bc27fb - std::panicking::default_hook::{{closure}}::hceb0cad555a61bc8 [INFO] [stdout] 10: 0x55a818bc24cd - std::panicking::default_hook::h00eb745c4c12778b [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55a818b22a67 - as core::ops::function::Fn>::call::h6a7083dbc9bd7b5f [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2030:9 [INFO] [stdout] 12: 0x55a818b22a67 - test::test_main::{{closure}}::h4db87ac2515c25e3 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:137:21 [INFO] [stdout] 13: 0x55a818bc2e30 - as core::ops::function::Fn>::call::hf3b7bc2e2257730b [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2030:9 [INFO] [stdout] 14: 0x55a818bc2e30 - std::panicking::rust_panic_with_hook::hccddb3269d601551 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:786:13 [INFO] [stdout] 15: 0x55a818bc2b72 - std::panicking::begin_panic_handler::{{closure}}::h1759cdf989495c64 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:660:13 [INFO] [stdout] 16: 0x55a818bc1236 - std::sys_common::backtrace::__rust_end_short_backtrace::h209794238b4d13a4 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55a818bc28a4 - rust_begin_unwind [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:648:5 [INFO] [stdout] 18: 0x55a818ae8115 - core::panicking::panic_fmt::ha17ebef8fbaa0a3e [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55a818ae8603 - core::result::unwrap_failed::h4921228b49be0fef [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/result.rs:1653:5 [INFO] [stdout] 20: 0x55a818aea05b - core::result::Result::unwrap::h9ce14008eadddcac [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/result.rs:1077:23 [INFO] [stdout] 21: 0x55a818aea05b - rustlings::exercise::test::test_exercise_with_output::h410c0125a71dc5ae [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:19 [INFO] [stdout] 22: 0x55a818aede59 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hfbc633f1dc7a38e7 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x55a818aede59 - core::ops::function::FnOnce::call_once::h6e4b0144719394e4 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55a818b2826f - core::ops::function::FnOnce::call_once::hb293dddd1a0c8d0c [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55a818b2826f - test::__rust_begin_short_backtrace::hcc33cf50a0d42744 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:620:18 [INFO] [stdout] 26: 0x55a818b26de0 - test::run_test_in_process::{{closure}}::h1a67b8b225cf5559 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:643:60 [INFO] [stdout] 27: 0x55a818b26de0 - as core::ops::function::FnOnce<()>>::call_once::h6c8366f6b1a529d0 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55a818b26de0 - std::panicking::try::do_call::h3ac771f4eea356d5 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:555:40 [INFO] [stdout] 29: 0x55a818b26de0 - std::panicking::try::h2b1799e4f57e5bcf [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:519:19 [INFO] [stdout] 30: 0x55a818b26de0 - std::panic::catch_unwind::h0a3cc3fea72ac271 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55a818b26de0 - test::run_test_in_process::h47356101e0c4cc43 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:643:27 [INFO] [stdout] 32: 0x55a818b26de0 - test::run_test::{{closure}}::hfc86d13e98ee1936 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:566:43 [INFO] [stdout] 33: 0x55a818aef123 - test::run_test::{{closure}}::h077c30ad86447616 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/test/src/lib.rs:594:41 [INFO] [stdout] 34: 0x55a818aef123 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7a0647371687c548 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55a818af3dbf - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h0ade0df8a561803e [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/thread/mod.rs:528:17 [INFO] [stdout] 36: 0x55a818af3dbf - as core::ops::function::FnOnce<()>>::call_once::h94e6781319385c1d [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55a818af3dbf - std::panicking::try::do_call::h2d8e7d2812ed142e [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:555:40 [INFO] [stdout] 38: 0x55a818af3dbf - std::panicking::try::hfec8a6adb9bfcaea [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panicking.rs:519:19 [INFO] [stdout] 39: 0x55a818af3dbf - std::panic::catch_unwind::hf488fb91a41eb5b5 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55a818af3dbf - std::thread::Builder::spawn_unchecked_::{{closure}}::h306975a3cadd5153 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/thread/mod.rs:527:30 [INFO] [stdout] 41: 0x55a818af3dbf - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4f4ed26f27d558ae [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55a818bc7285 - as core::ops::function::FnOnce>::call_once::h17d6fdbdde1f730c [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2016:9 [INFO] [stdout] 43: 0x55a818bc7285 - as core::ops::function::FnOnce>::call_once::h298d88b0d0cf4d06 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/alloc/src/boxed.rs:2016:9 [INFO] [stdout] 44: 0x55a818bc7285 - std::sys::pal::unix::thread::Thread::new::thread_start::h1ecd97591626fa72 [INFO] [stdout] at /rustc/d073071d77ce0f93b4fd8cc567a1e2b9e1b22126/library/std/src/sys/pal/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7fc11c66fac3 - [INFO] [stdout] 46: 0x7fc11c700bf4 - __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 0.10s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "261d021286efb7f7f722f81c8618feeb727488e58e49f6350e96814c63161b6b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "261d021286efb7f7f722f81c8618feeb727488e58e49f6350e96814c63161b6b", kill_on_drop: false }` [INFO] [stdout] 261d021286efb7f7f722f81c8618feeb727488e58e49f6350e96814c63161b6b