[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-LeeLeonGithub [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-LeeLeonGithub" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-LeeLeonGithub", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-LeeLeonGithub'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 94e5d184d022add86c284ef408a344a3ac629943 [INFO] testing LearningOS/rust-rustlings-LeeLeonGithub against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-LeeLeonGithub" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub on toolchain 1871252fc8bb672d40787e67404e6eaae7059369 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub 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" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] testing LearningOS/rust-rustlings-LeeLeonGithub against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-LeeLeonGithub" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-LeeLeonGithub 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" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 66d046ec2694219067d0a24dd09efc9c62215f1a061ce72ffa31ed7317e5d786 [INFO] running `Command { std: "docker" "start" "-a" "66d046ec2694219067d0a24dd09efc9c62215f1a061ce72ffa31ed7317e5d786", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "66d046ec2694219067d0a24dd09efc9c62215f1a061ce72ffa31ed7317e5d786", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "66d046ec2694219067d0a24dd09efc9c62215f1a061ce72ffa31ed7317e5d786", kill_on_drop: false }` [INFO] [stdout] 66d046ec2694219067d0a24dd09efc9c62215f1a061ce72ffa31ed7317e5d786 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 844d68d26c423435745d112b268e80a12ae3f4a1dc01f512e7e6ee4cd6bb2b0c [INFO] running `Command { std: "docker" "start" "-a" "844d68d26c423435745d112b268e80a12ae3f4a1dc01f512e7e6ee4cd6bb2b0c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.137 [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 log v0.4.14 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling lock_api v0.4.9 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling parking_lot_core v0.9.4 [INFO] [stderr] Compiling smallvec v1.10.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling tokio v1.21.2 [INFO] [stderr] Compiling quote v1.0.9 [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 once_cell v1.10.0 [INFO] [stderr] Compiling argh_shared v0.1.5 [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 unicode-width v0.1.8 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling socket2 v0.4.7 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling mio v0.8.5 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling bytes v1.2.1 [INFO] [stderr] Compiling pin-project-lite v0.2.9 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling tokio-macros v1.8.0 [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 40.00s [INFO] running `Command { std: "docker" "inspect" "844d68d26c423435745d112b268e80a12ae3f4a1dc01f512e7e6ee4cd6bb2b0c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "844d68d26c423435745d112b268e80a12ae3f4a1dc01f512e7e6ee4cd6bb2b0c", kill_on_drop: false }` [INFO] [stdout] 844d68d26c423435745d112b268e80a12ae3f4a1dc01f512e7e6ee4cd6bb2b0c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2201efc70a30848659b29b77a4f6f0ff062d0434b2023492c4afd791da780200 [INFO] running `Command { std: "docker" "start" "-a" "2201efc70a30848659b29b77a4f6f0ff062d0434b2023492c4afd791da780200", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 4.82s [INFO] running `Command { std: "docker" "inspect" "2201efc70a30848659b29b77a4f6f0ff062d0434b2023492c4afd791da780200", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2201efc70a30848659b29b77a4f6f0ff062d0434b2023492c4afd791da780200", kill_on_drop: false }` [INFO] [stdout] 2201efc70a30848659b29b77a4f6f0ff062d0434b2023492c4afd791da780200 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] d0c13ef05a884901a8b48f422790e9f9bd8a4955838ccd73d24162b6742c3d89 [INFO] running `Command { std: "docker" "start" "-a" "d0c13ef05a884901a8b48f422790e9f9bd8a4955838ccd73d24162b6742c3d89", 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-0da0eebcf6579f30) [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test exercise::test::test_finished_exercise ... ok [INFO] [stdout] test exercise::test::test_pending_state ... ok [INFO] [stdout] test exercise::test::test_clean ... FAILED [INFO] [stdout] test exercise::test::test_exercise_with_output ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_clean stdout ---- [INFO] [stdout] thread 'exercise::test::test_clean' panicked at src/exercise.rs:269:36: [INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x563281e1fd45 - std::backtrace_rs::backtrace::libunwind::trace::he49dc9a9e3164223 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5 [INFO] [stdout] 1: 0x563281e1fd45 - std::backtrace_rs::backtrace::trace_unsynchronized::h3a3e77c68030aa6b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x563281e1fd45 - std::sys_common::backtrace::_print_fmt::h9479ad2f99afd5d4 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x563281e1fd45 - ::fmt::hfb01aa1fa3fb1821 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x563281e4673b - core::fmt::rt::Argument::fmt::h125e56152abbc1c3 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/rt.rs:165:63 [INFO] [stdout] 5: 0x563281e4673b - core::fmt::write::hb0ab4ff05ccfe741 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/mod.rs:1169:21 [INFO] [stdout] 6: 0x563281e1d61f - std::io::Write::write_fmt::hea6336dbf2fa00b8 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/io/mod.rs:1835:15 [INFO] [stdout] 7: 0x563281e1fb1e - std::sys_common::backtrace::_print::h79ca548f3a2adf4b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x563281e1fb1e - std::sys_common::backtrace::print::h9aebf997b2fea2d3 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x563281e21489 - std::panicking::default_hook::{{closure}}::h68a0954af2694526 [INFO] [stdout] 10: 0x563281e211dc - std::panicking::default_hook::h5be50cc6849ffb00 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:295:9 [INFO] [stdout] 11: 0x563281caeeff - as core::ops::function::Fn>::call::hd874405dcbd1d3ed [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9 [INFO] [stdout] 12: 0x563281caeeff - test::test_main::{{closure}}::h4f26a9df34a84b94 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:137:21 [INFO] [stdout] 13: 0x563281e21a8b - as core::ops::function::Fn>::call::h00e96d9c62aa9a12 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9 [INFO] [stdout] 14: 0x563281e21a8b - std::panicking::rust_panic_with_hook::h3c0df6036729334c [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:799:13 [INFO] [stdout] 15: 0x563281e21804 - std::panicking::begin_panic_handler::{{closure}}::ha3a21e93c4cfd807 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:664:13 [INFO] [stdout] 16: 0x563281e20209 - std::sys_common::backtrace::__rust_end_short_backtrace::h19508a8f8ae71dc9 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x563281e21537 - rust_begin_unwind [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:652:5 [INFO] [stdout] 18: 0x563281c64e13 - core::panicking::panic_fmt::h2ba8af99174d83ea [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x563281c65386 - core::result::unwrap_failed::h52f3bbb78b59f71d [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/result.rs:1654:5 [INFO] [stdout] 20: 0x563281c6faba - core::result::Result::unwrap::hfea6efe0c6a22518 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/result.rs:1077:23 [INFO] [stdout] 21: 0x563281c6faba - rustlings::exercise::test::test_clean::had53d6da023dd7be [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:9 [INFO] [stdout] 22: 0x563281c6f9f7 - rustlings::exercise::test::test_clean::{{closure}}::h654f5b75e80cd5d0 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x563281c6ce56 - core::ops::function::FnOnce::call_once::h5af3048c07f3abc0 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x563281cb381b - core::ops::function::FnOnce::call_once::h18c6bf92212b87a4 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x563281cb381b - test::__rust_begin_short_backtrace::hdcf0edcfa9080086 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:625:18 [INFO] [stdout] 26: 0x563281cb2ee1 - test::run_test_in_process::{{closure}}::heac2c4eb375d2d10 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:60 [INFO] [stdout] 27: 0x563281cb2ee1 - as core::ops::function::FnOnce<()>>::call_once::h0289bafc8a1cc004 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x563281cb2ee1 - std::panicking::try::do_call::h5e158f1ad8a5f983 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40 [INFO] [stdout] 29: 0x563281cb2ee1 - std::panicking::try::hea3411d60321c4de [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19 [INFO] [stdout] 30: 0x563281cb2ee1 - std::panic::catch_unwind::hafb7bb18bc47bbc7 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14 [INFO] [stdout] 31: 0x563281cb2ee1 - test::run_test_in_process::h74dd138dc7762d99 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:27 [INFO] [stdout] 32: 0x563281cb2ee1 - test::run_test::{{closure}}::h6b390822e63606cf [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:569:43 [INFO] [stdout] 33: 0x563281c7b8b4 - test::run_test::{{closure}}::h6e11dba8131d354b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:599:41 [INFO] [stdout] 34: 0x563281c7b8b4 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha71b3541b59bdbbb [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x563281c80382 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hef92127c5ef9e53c [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:542:17 [INFO] [stdout] 36: 0x563281c80382 - as core::ops::function::FnOnce<()>>::call_once::h859c109f9d11c92b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x563281c80382 - std::panicking::try::do_call::hbf534c458cd858f0 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40 [INFO] [stdout] 38: 0x563281c80382 - std::panicking::try::h65c18365a7b9ad90 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19 [INFO] [stdout] 39: 0x563281c80382 - std::panic::catch_unwind::h21b25d4c69478c39 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14 [INFO] [stdout] 40: 0x563281c80382 - std::thread::Builder::spawn_unchecked_::{{closure}}::h23335f620275a9bf [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:541:30 [INFO] [stdout] 41: 0x563281c80382 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb491dc55513e9b7c [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x563281e25e2b - as core::ops::function::FnOnce>::call_once::h41b39260afcffdc9 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9 [INFO] [stdout] 43: 0x563281e25e2b - as core::ops::function::FnOnce>::call_once::h6694c8dc6dd010c4 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9 [INFO] [stdout] 44: 0x563281e25e2b - std::sys::pal::unix::thread::Thread::new::thread_start::hf16038e1c8e19c99 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys/pal/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f45beccaac3 - [INFO] [stdout] 46: 0x7f45bed5ba04 - __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/./rmetaR3M6RB\"\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: 0x563281e1fd45 - std::backtrace_rs::backtrace::libunwind::trace::he49dc9a9e3164223 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5 [INFO] [stdout] 1: 0x563281e1fd45 - std::backtrace_rs::backtrace::trace_unsynchronized::h3a3e77c68030aa6b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x563281e1fd45 - std::sys_common::backtrace::_print_fmt::h9479ad2f99afd5d4 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x563281e1fd45 - ::fmt::hfb01aa1fa3fb1821 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x563281e4673b - core::fmt::rt::Argument::fmt::h125e56152abbc1c3 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/rt.rs:165:63 [INFO] [stdout] 5: 0x563281e4673b - core::fmt::write::hb0ab4ff05ccfe741 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/mod.rs:1169:21 [INFO] [stdout] 6: 0x563281e1d61f - std::io::Write::write_fmt::hea6336dbf2fa00b8 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/io/mod.rs:1835:15 [INFO] [stdout] 7: 0x563281e1fb1e - std::sys_common::backtrace::_print::h79ca548f3a2adf4b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x563281e1fb1e - std::sys_common::backtrace::print::h9aebf997b2fea2d3 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x563281e21489 - std::panicking::default_hook::{{closure}}::h68a0954af2694526 [INFO] [stdout] 10: 0x563281e211dc - std::panicking::default_hook::h5be50cc6849ffb00 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:295:9 [INFO] [stdout] 11: 0x563281caeeff - as core::ops::function::Fn>::call::hd874405dcbd1d3ed [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9 [INFO] [stdout] 12: 0x563281caeeff - test::test_main::{{closure}}::h4f26a9df34a84b94 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:137:21 [INFO] [stdout] 13: 0x563281e21a8b - as core::ops::function::Fn>::call::h00e96d9c62aa9a12 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9 [INFO] [stdout] 14: 0x563281e21a8b - std::panicking::rust_panic_with_hook::h3c0df6036729334c [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:799:13 [INFO] [stdout] 15: 0x563281e21804 - std::panicking::begin_panic_handler::{{closure}}::ha3a21e93c4cfd807 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:664:13 [INFO] [stdout] 16: 0x563281e20209 - std::sys_common::backtrace::__rust_end_short_backtrace::h19508a8f8ae71dc9 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x563281e21537 - rust_begin_unwind [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:652:5 [INFO] [stdout] 18: 0x563281c64e13 - core::panicking::panic_fmt::h2ba8af99174d83ea [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x563281c65386 - core::result::unwrap_failed::h52f3bbb78b59f71d [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/result.rs:1654:5 [INFO] [stdout] 20: 0x563281c7091a - core::result::Result::unwrap::h219caf6e5859cc30 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/result.rs:1077:23 [INFO] [stdout] 21: 0x563281c7091a - rustlings::exercise::test::test_exercise_with_output::he2a1a615c6113947 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:19 [INFO] [stdout] 22: 0x563281c70727 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h8fc46c14636cb501 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x563281c6cde6 - core::ops::function::FnOnce::call_once::h16d247725c3ac775 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x563281cb381b - core::ops::function::FnOnce::call_once::h18c6bf92212b87a4 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x563281cb381b - test::__rust_begin_short_backtrace::hdcf0edcfa9080086 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:625:18 [INFO] [stdout] 26: 0x563281cb2ee1 - test::run_test_in_process::{{closure}}::heac2c4eb375d2d10 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:60 [INFO] [stdout] 27: 0x563281cb2ee1 - as core::ops::function::FnOnce<()>>::call_once::h0289bafc8a1cc004 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x563281cb2ee1 - std::panicking::try::do_call::h5e158f1ad8a5f983 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40 [INFO] [stdout] 29: 0x563281cb2ee1 - std::panicking::try::hea3411d60321c4de [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19 [INFO] [stdout] 30: 0x563281cb2ee1 - std::panic::catch_unwind::hafb7bb18bc47bbc7 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14 [INFO] [stdout] 31: 0x563281cb2ee1 - test::run_test_in_process::h74dd138dc7762d99 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:27 [INFO] [stdout] 32: 0x563281cb2ee1 - test::run_test::{{closure}}::h6b390822e63606cf [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:569:43 [INFO] [stdout] 33: 0x563281c7b8b4 - test::run_test::{{closure}}::h6e11dba8131d354b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:599:41 [INFO] [stdout] 34: 0x563281c7b8b4 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha71b3541b59bdbbb [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x563281c80382 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hef92127c5ef9e53c [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:542:17 [INFO] [stdout] 36: 0x563281c80382 - as core::ops::function::FnOnce<()>>::call_once::h859c109f9d11c92b [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x563281c80382 - std::panicking::try::do_call::hbf534c458cd858f0 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40 [INFO] [stdout] 38: 0x563281c80382 - std::panicking::try::h65c18365a7b9ad90 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19 [INFO] [stdout] 39: 0x563281c80382 - std::panic::catch_unwind::h21b25d4c69478c39 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14 [INFO] [stdout] 40: 0x563281c80382 - std::thread::Builder::spawn_unchecked_::{{closure}}::h23335f620275a9bf [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:541:30 [INFO] [stdout] 41: 0x563281c80382 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb491dc55513e9b7c [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x563281e25e2b - as core::ops::function::FnOnce>::call_once::h41b39260afcffdc9 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9 [INFO] [stdout] 43: 0x563281e25e2b - as core::ops::function::FnOnce>::call_once::h6694c8dc6dd010c4 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9 [INFO] [stdout] 44: 0x563281e25e2b - std::sys::pal::unix::thread::Thread::new::thread_start::hf16038e1c8e19c99 [INFO] [stdout] at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys/pal/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f45beccaac3 - [INFO] [stdout] 46: 0x7f45bed5ba04 - __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 0.04s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "d0c13ef05a884901a8b48f422790e9f9bd8a4955838ccd73d24162b6742c3d89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0c13ef05a884901a8b48f422790e9f9bd8a4955838ccd73d24162b6742c3d89", kill_on_drop: false }` [INFO] [stdout] d0c13ef05a884901a8b48f422790e9f9bd8a4955838ccd73d24162b6742c3d89