[INFO] cloning repository https://github.com/tydanny/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tydanny/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftydanny%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftydanny%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 75afa6a4372d94d41f7f096c39d3ccd7633066e8 [INFO] testing tydanny/rustlings against master#2fe50cd72c476ebacdedb14893e9632b4de961c2 for pr-116088-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftydanny%2Frustlings" "/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/tydanny/rustlings on toolchain 2fe50cd72c476ebacdedb14893e9632b4de961c2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/tydanny/rustlings [INFO] finished tweaking git repo https://github.com/tydanny/rustlings [INFO] tweaked toml for git repo https://github.com/tydanny/rustlings written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/tydanny/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" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded unicode-xid v0.2.2 [INFO] [stderr] Downloaded lazycell v1.3.0 [INFO] [stderr] Downloaded same-file v1.0.6 [INFO] [stderr] Downloaded winapi-build v0.1.1 [INFO] [stderr] Downloaded fsevent-sys v2.0.1 [INFO] [stderr] Downloaded argh_shared v0.1.5 [INFO] [stderr] Downloaded encode_unicode v0.3.6 [INFO] [stderr] Downloaded mio-extras v2.0.6 [INFO] [stderr] Downloaded number_prefix v0.4.0 [INFO] [stderr] Downloaded winapi-util v0.1.5 [INFO] [stderr] Downloaded filetime v0.2.15 [INFO] [stderr] Downloaded home v0.5.3 [INFO] [stderr] Downloaded unicode-width v0.1.8 [INFO] [stderr] Downloaded inotify v0.7.1 [INFO] [stderr] Downloaded escargot v0.4.0 [INFO] [stderr] Downloaded proc-macro2 v1.0.28 [INFO] [stderr] Downloaded serde v1.0.129 [INFO] [stderr] Downloaded difference v2.0.0 [INFO] [stderr] Downloaded regex v1.5.5 [INFO] [stderr] Downloaded winapi v0.2.8 [INFO] [stderr] Downloaded serde_json v1.0.81 [INFO] [stderr] Downloaded syn v1.0.75 [INFO] [stderr] Downloaded libc v0.2.100 [INFO] [stderr] Downloaded regex-syntax v0.6.25 [INFO] [stderr] Downloaded unicode-segmentation v1.8.0 [INFO] [stderr] Downloaded serde_derive v1.0.129 [INFO] [stderr] Downloaded toml v0.5.9 [INFO] [stderr] Downloaded glob v0.3.0 [INFO] [stderr] Downloaded ryu v1.0.5 [INFO] [stderr] Downloaded redox_syscall v0.2.10 [INFO] [stderr] Downloaded log v0.4.14 [INFO] [stderr] Downloaded indicatif v0.16.2 [INFO] [stderr] Downloaded notify v4.0.17 [INFO] [stderr] Downloaded num-traits v0.2.14 [INFO] [stderr] Downloaded memchr v2.4.1 [INFO] [stderr] Downloaded aho-corasick v0.7.18 [INFO] [stderr] Downloaded argh_derive v0.1.5 [INFO] [stderr] Downloaded argh v0.1.5 [INFO] [stderr] Downloaded assert_cmd v0.11.1 [INFO] [stderr] Downloaded once_cell v1.10.0 [INFO] [stderr] Downloaded autocfg v1.0.1 [INFO] [stderr] Downloaded predicates-tree v1.0.3 [INFO] [stderr] Downloaded treeline v0.1.0 [INFO] [stderr] Downloaded kernel32-sys v0.2.2 [INFO] [stderr] Downloaded terminal_size v0.1.17 [INFO] [stderr] Downloaded net2 v0.2.37 [INFO] [stderr] Downloaded predicates-core v1.0.2 [INFO] [stderr] Downloaded itoa v1.0.2 [INFO] [stderr] Downloaded predicates v1.0.8 [INFO] [stderr] Downloaded quote v1.0.9 [INFO] [stderr] Downloaded console v0.15.0 [INFO] [stderr] Downloaded miow v0.2.2 [INFO] [stderr] Downloaded walkdir v2.3.2 [INFO] [stderr] Downloaded fuchsia-zircon v0.3.3 [INFO] [stderr] Downloaded float-cmp v0.8.0 [INFO] [stderr] Downloaded slab v0.4.4 [INFO] [stderr] Downloaded fsevent v0.4.0 [INFO] [stderr] Downloaded fuchsia-zircon-sys v0.3.3 [INFO] [stderr] Downloaded inotify-sys v0.1.5 [INFO] [stderr] Downloaded normalize-line-endings v0.3.0 [INFO] [stderr] Downloaded ws2_32-sys v0.2.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb [INFO] running `Command { std: "docker" "start" "-a" "b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb", kill_on_drop: false }` [INFO] [stdout] b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9 [INFO] running `Command { std: "docker" "start" "-a" "3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling regex-syntax v0.6.25 [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 argh_shared v0.1.5 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.5.9 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 15.42s [INFO] running `Command { std: "docker" "inspect" "3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9", kill_on_drop: false }` [INFO] [stdout] 3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7 [INFO] running `Command { std: "docker" "start" "-a" "e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.75s [INFO] running `Command { std: "docker" "inspect" "e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7", kill_on_drop: false }` [INFO] [stdout] e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1 [INFO] running `Command { std: "docker" "start" "-a" "6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-77b0ddad1ddbf7fd) [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: 0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::libunwind::trace::hd7a456af414d63de [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::trace_unsynchronized::h64867240ea973bd5 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55ef0a9eb7b6 - std::sys_common::backtrace::_print_fmt::h2808b222ea4d26d0 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55ef0a9eb7b6 - ::fmt::h03f74bc036e21c80 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55ef0aa148a0 - core::fmt::rt::Argument::fmt::h8121cad32ccb67f1 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55ef0aa148a0 - core::fmt::write::hba6738a49cae548f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55ef0a9e932f - std::io::Write::write_fmt::h998dc49ddc9bbda8 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/io/mod.rs:1810:15 [INFO] [stdout] 7: 0x55ef0a9eb594 - std::sys_common::backtrace::_print::h12e2732351687df5 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55ef0a9eb594 - std::sys_common::backtrace::print::h3977ff4fa70d37c3 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55ef0a9ed307 - std::panicking::default_hook::{{closure}}::h3649b42de801f190 [INFO] [stdout] 10: 0x55ef0a9ecfed - std::panicking::default_hook::h3fb7ccab350417f5 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55ef0a86cfe7 - as core::ops::function::Fn>::call::hcac2ee49c7d5205e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 12: 0x55ef0a86cfe7 - test::test_main::{{closure}}::ha6dc19c93a11f2d1 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:138:21 [INFO] [stdout] 13: 0x55ef0a9ed926 - as core::ops::function::Fn>::call::h29b8e785b856bb23 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 14: 0x55ef0a9ed926 - std::panicking::rust_panic_with_hook::h5efc89ef996de810 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:783:13 [INFO] [stdout] 15: 0x55ef0a9ed672 - std::panicking::begin_panic_handler::{{closure}}::h6289f51ae1ae9efc [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:657:13 [INFO] [stdout] 16: 0x55ef0a9ebcb6 - std::sys_common::backtrace::__rust_end_short_backtrace::h9f143e0a9d826e65 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55ef0a9ed3d0 - rust_begin_unwind [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:645:5 [INFO] [stdout] 18: 0x55ef0a8262a5 - core::panicking::panic_fmt::h5b9d04f36fd68862 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55ef0a826883 - core::result::unwrap_failed::h51ff08a68f0aec4a [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1649:5 [INFO] [stdout] 20: 0x55ef0a82845b - core::result::Result::unwrap::h55968752bd23e96f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1073:23 [INFO] [stdout] 21: 0x55ef0a82d401 - rustlings::exercise::test::test_clean::habe8eaa378259128 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:9 [INFO] [stdout] 22: 0x55ef0a82d387 - rustlings::exercise::test::test_clean::{{closure}}::h32b1e158de767298 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x55ef0a82f876 - core::ops::function::FnOnce::call_once::h8639849da792536a [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55ef0a8727ef - core::ops::function::FnOnce::call_once::h547df4cc4781c42c [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55ef0a8727ef - test::__rust_begin_short_backtrace::h0751f8da0df8afc9 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:627:18 [INFO] [stdout] 26: 0x55ef0a871641 - test::run_test_in_process::{{closure}}::h08b7e2b944f5d3bf [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:60 [INFO] [stdout] 27: 0x55ef0a871641 - as core::ops::function::FnOnce<()>>::call_once::h4eabe934da23f6d3 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55ef0a871641 - std::panicking::try::do_call::h8bce2a819a83d75f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40 [INFO] [stdout] 29: 0x55ef0a871641 - std::panicking::try::h8d0ad43ca1e9dfe4 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19 [INFO] [stdout] 30: 0x55ef0a871641 - std::panic::catch_unwind::h80c407981483a27f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55ef0a871641 - test::run_test_in_process::h34f4f1cf26878dcc [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:27 [INFO] [stdout] 32: 0x55ef0a871641 - test::run_test::{{closure}}::hf98423759bd4e4de [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:573:43 [INFO] [stdout] 33: 0x55ef0a8389d6 - test::run_test::{{closure}}::h31f9214a9865a468 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:601:41 [INFO] [stdout] 34: 0x55ef0a8389d6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h97eebf57e64e4a3e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h10343cc6e645d5a7 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:529:17 [INFO] [stdout] 36: 0x55ef0a83dad7 - as core::ops::function::FnOnce<()>>::call_once::h7676f5746d51f304 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55ef0a83dad7 - std::panicking::try::do_call::h76c69ddb47b6692d [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40 [INFO] [stdout] 38: 0x55ef0a83dad7 - std::panicking::try::h231004126786543e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19 [INFO] [stdout] 39: 0x55ef0a83dad7 - std::panic::catch_unwind::h519133dc1360745e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h7c96b1538d88533f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:528:30 [INFO] [stdout] 41: 0x55ef0a83dad7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h90e3a916fbad66da [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55ef0a9f2565 - as core::ops::function::FnOnce>::call_once::h12c26c313019b755 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 43: 0x55ef0a9f2565 - as core::ops::function::FnOnce>::call_once::h3a7c22937eaa10d1 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 44: 0x55ef0a9f2565 - std::sys::unix::thread::Thread::new::thread_start::h1ce303acc71f2e7d [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f53da99cac3 - [INFO] [stdout] 46: 0x7f53daa2dbf4 - __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/./rmeta14jhHB\"\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: 0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::libunwind::trace::hd7a456af414d63de [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::trace_unsynchronized::h64867240ea973bd5 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55ef0a9eb7b6 - std::sys_common::backtrace::_print_fmt::h2808b222ea4d26d0 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55ef0a9eb7b6 - ::fmt::h03f74bc036e21c80 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55ef0aa148a0 - core::fmt::rt::Argument::fmt::h8121cad32ccb67f1 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55ef0aa148a0 - core::fmt::write::hba6738a49cae548f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55ef0a9e932f - std::io::Write::write_fmt::h998dc49ddc9bbda8 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/io/mod.rs:1810:15 [INFO] [stdout] 7: 0x55ef0a9eb594 - std::sys_common::backtrace::_print::h12e2732351687df5 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55ef0a9eb594 - std::sys_common::backtrace::print::h3977ff4fa70d37c3 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55ef0a9ed307 - std::panicking::default_hook::{{closure}}::h3649b42de801f190 [INFO] [stdout] 10: 0x55ef0a9ecfed - std::panicking::default_hook::h3fb7ccab350417f5 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55ef0a86cfe7 - as core::ops::function::Fn>::call::hcac2ee49c7d5205e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 12: 0x55ef0a86cfe7 - test::test_main::{{closure}}::ha6dc19c93a11f2d1 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:138:21 [INFO] [stdout] 13: 0x55ef0a9ed926 - as core::ops::function::Fn>::call::h29b8e785b856bb23 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 14: 0x55ef0a9ed926 - std::panicking::rust_panic_with_hook::h5efc89ef996de810 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:783:13 [INFO] [stdout] 15: 0x55ef0a9ed672 - std::panicking::begin_panic_handler::{{closure}}::h6289f51ae1ae9efc [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:657:13 [INFO] [stdout] 16: 0x55ef0a9ebcb6 - std::sys_common::backtrace::__rust_end_short_backtrace::h9f143e0a9d826e65 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55ef0a9ed3d0 - rust_begin_unwind [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:645:5 [INFO] [stdout] 18: 0x55ef0a8262a5 - core::panicking::panic_fmt::h5b9d04f36fd68862 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55ef0a826883 - core::result::unwrap_failed::h51ff08a68f0aec4a [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1649:5 [INFO] [stdout] 20: 0x55ef0a828301 - core::result::Result::unwrap::h0777c05b464ca65b [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1073:23 [INFO] [stdout] 21: 0x55ef0a82e0ec - rustlings::exercise::test::test_exercise_with_output::h160adf85eb3b4c04 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:19 [INFO] [stdout] 22: 0x55ef0a82df87 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hb7a499237334baf6 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x55ef0a82f806 - core::ops::function::FnOnce::call_once::h3f8effdb9583f011 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55ef0a8727ef - core::ops::function::FnOnce::call_once::h547df4cc4781c42c [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55ef0a8727ef - test::__rust_begin_short_backtrace::h0751f8da0df8afc9 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:627:18 [INFO] [stdout] 26: 0x55ef0a871641 - test::run_test_in_process::{{closure}}::h08b7e2b944f5d3bf [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:60 [INFO] [stdout] 27: 0x55ef0a871641 - as core::ops::function::FnOnce<()>>::call_once::h4eabe934da23f6d3 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55ef0a871641 - std::panicking::try::do_call::h8bce2a819a83d75f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40 [INFO] [stdout] 29: 0x55ef0a871641 - std::panicking::try::h8d0ad43ca1e9dfe4 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19 [INFO] [stdout] 30: 0x55ef0a871641 - std::panic::catch_unwind::h80c407981483a27f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55ef0a871641 - test::run_test_in_process::h34f4f1cf26878dcc [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:27 [INFO] [stdout] 32: 0x55ef0a871641 - test::run_test::{{closure}}::hf98423759bd4e4de [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:573:43 [INFO] [stdout] 33: 0x55ef0a8389d6 - test::run_test::{{closure}}::h31f9214a9865a468 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:601:41 [INFO] [stdout] 34: 0x55ef0a8389d6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h97eebf57e64e4a3e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h10343cc6e645d5a7 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:529:17 [INFO] [stdout] 36: 0x55ef0a83dad7 - as core::ops::function::FnOnce<()>>::call_once::h7676f5746d51f304 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55ef0a83dad7 - std::panicking::try::do_call::h76c69ddb47b6692d [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40 [INFO] [stdout] 38: 0x55ef0a83dad7 - std::panicking::try::h231004126786543e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19 [INFO] [stdout] 39: 0x55ef0a83dad7 - std::panic::catch_unwind::h519133dc1360745e [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h7c96b1538d88533f [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:528:30 [INFO] [stdout] 41: 0x55ef0a83dad7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h90e3a916fbad66da [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55ef0a9f2565 - as core::ops::function::FnOnce>::call_once::h12c26c313019b755 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 43: 0x55ef0a9f2565 - as core::ops::function::FnOnce>::call_once::h3a7c22937eaa10d1 [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 44: 0x55ef0a9f2565 - std::sys::unix::thread::Thread::new::thread_start::h1ce303acc71f2e7d [INFO] [stdout] at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f53da99cac3 - [INFO] [stdout] 46: 0x7f53daa2dbf4 - __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] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1", kill_on_drop: false }` [INFO] [stdout] 6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1