[INFO] cloning repository https://github.com/rjyo/rustlings_answers [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rjyo/rustlings_answers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjyo%2Frustlings_answers", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjyo%2Frustlings_answers'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ea9b707d5c58334cc191f5789ce4c27707a71cb2 [INFO] testing rjyo/rustlings_answers against try#ed7f3d77595b4831fdf085f2529aa13b5b51ff7d for pr-134530 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjyo%2Frustlings_answers" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rjyo/rustlings_answers on toolchain ed7f3d77595b4831fdf085f2529aa13b5b51ff7d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rjyo/rustlings_answers [INFO] finished tweaking git repo https://github.com/rjyo/rustlings_answers [INFO] tweaked toml for git repo https://github.com/rjyo/rustlings_answers written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/rjyo/rustlings_answers 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" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bd06915d80db4f9e57893c50e38372741988f218b25de565ea47be286fff67af [INFO] running `Command { std: "docker" "start" "-a" "bd06915d80db4f9e57893c50e38372741988f218b25de565ea47be286fff67af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bd06915d80db4f9e57893c50e38372741988f218b25de565ea47be286fff67af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd06915d80db4f9e57893c50e38372741988f218b25de565ea47be286fff67af", kill_on_drop: false }` [INFO] [stdout] bd06915d80db4f9e57893c50e38372741988f218b25de565ea47be286fff67af [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3bff6aab3fb0435434738d145bd6da0145fba3adc4ece9ef965c5f90b28d2a78 [INFO] running `Command { std: "docker" "start" "-a" "3bff6aab3fb0435434738d145bd6da0145fba3adc4ece9ef965c5f90b28d2a78", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.81 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling syn v1.0.55 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling thread_local v1.0.1 [INFO] [stderr] Compiling instant v0.1.9 [INFO] [stderr] Compiling smallvec v1.5.1 [INFO] [stderr] Compiling regex-syntax v0.6.21 [INFO] [stderr] Compiling serde_derive v1.0.118 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling aho-corasick v0.7.15 [INFO] [stderr] Compiling lock_api v0.4.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling serde v1.0.118 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling parking_lot_core v0.8.1 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling quote v1.0.8 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling terminal_size v0.1.15 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling inotify-sys v0.1.4 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling termios v0.3.3 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling filetime v0.2.13 [INFO] [stderr] Compiling walkdir v2.3.1 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling vec_map v0.8.2 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling notify v4.0.15 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling regex v1.4.2 [INFO] [stderr] Compiling console v0.13.0 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v4.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.95s [INFO] running `Command { std: "docker" "inspect" "3bff6aab3fb0435434738d145bd6da0145fba3adc4ece9ef965c5f90b28d2a78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3bff6aab3fb0435434738d145bd6da0145fba3adc4ece9ef965c5f90b28d2a78", kill_on_drop: false }` [INFO] [stdout] 3bff6aab3fb0435434738d145bd6da0145fba3adc4ece9ef965c5f90b28d2a78 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c4d4c668255894a41a1a37584869181298072068021158f66cc3330c5c3a98bf [INFO] running `Command { std: "docker" "start" "-a" "c4d4c668255894a41a1a37584869181298072068021158f66cc3330c5c3a98bf", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.60 [INFO] [stderr] Compiling itoa v0.4.6 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.0 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling predicates-tree v1.0.0 [INFO] [stderr] Compiling predicates v1.0.5 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v4.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 7.66s [INFO] running `Command { std: "docker" "inspect" "c4d4c668255894a41a1a37584869181298072068021158f66cc3330c5c3a98bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c4d4c668255894a41a1a37584869181298072068021158f66cc3330c5c3a98bf", kill_on_drop: false }` [INFO] [stdout] c4d4c668255894a41a1a37584869181298072068021158f66cc3330c5c3a98bf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ed7f3d77595b4831fdf085f2529aa13b5b51ff7d" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 58f2bc10cc3835391975b9bc4ce8c2a09024989dc79cb787e11a6773d34517bc [INFO] running `Command { std: "docker" "start" "-a" "58f2bc10cc3835391975b9bc4ce8c2a09024989dc79cb787e11a6773d34517bc", 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-e27287d3ce19f42f) [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:255:36: [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: 0x5a44707a46da - std::backtrace_rs::backtrace::libunwind::trace::h3dab7ffe210583a3 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x5a44707a46da - std::backtrace_rs::backtrace::trace_unsynchronized::h85ec3139dd4f9047 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x5a44707a46da - std::sys::backtrace::_print_fmt::h3447259688950eab [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5a44707a46da - ::fmt::ha8d24a0f27cc401d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5a44707cb9a3 - core::fmt::rt::Argument::fmt::h650b92642f481125 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/fmt/rt.rs:177:76 [INFO] [stdout] 5: 0x5a44707cb9a3 - core::fmt::write::h5becf96591c394eb [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/fmt/mod.rs:1437:21 [INFO] [stdout] 6: 0x5a44707a1313 - std::io::Write::write_fmt::h61fb565ee25d88c6 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/io/mod.rs:1887:15 [INFO] [stdout] 7: 0x5a44707a4522 - std::sys::backtrace::BacktraceLock::print::hae1dc20f39b0ae80 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x5a44707a5b5e - std::panicking::default_hook::{{closure}}::hb3023fc9edf847a9 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:284:22 [INFO] [stdout] 9: 0x5a44707a5967 - std::panicking::default_hook::h271aee2d85880663 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:308:9 [INFO] [stdout] 10: 0x5a447063c448 - as core::ops::function::Fn>::call::hbfe4f2a7834d388d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 11: 0x5a447063c448 - test::test_main::{{closure}}::hbb7d4fde4185abc5 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:134:21 [INFO] [stdout] 12: 0x5a44707a6378 - as core::ops::function::Fn>::call::hd4cbe0a9e8955cde [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 13: 0x5a44707a6378 - std::panicking::rust_panic_with_hook::he05f4a167c1908ac [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:825:13 [INFO] [stdout] 14: 0x5a44707a602a - std::panicking::begin_panic_handler::{{closure}}::h79780775730ab9df [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:690:13 [INFO] [stdout] 15: 0x5a44707a4ba9 - std::sys::backtrace::__rust_end_short_backtrace::h753217146a30d8a2 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 16: 0x5a44707a5cbd - rust_begin_unwind [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:681:5 [INFO] [stdout] 17: 0x5a44707ca380 - core::panicking::panic_fmt::h9ad4c3d87a3eb4ad [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/panicking.rs:75:14 [INFO] [stdout] 18: 0x5a44707ca7f6 - core::result::unwrap_failed::h865c91c1a27f7a85 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/result.rs:1699:5 [INFO] [stdout] 19: 0x5a4470600dda - core::result::Result::unwrap::h7a5db39f46e54c9c [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/result.rs:1104:23 [INFO] [stdout] 20: 0x5a4470600dda - rustlings::exercise::test::test_clean::hf4276516c1e47812 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:255:9 [INFO] [stdout] 21: 0x5a4470600d17 - rustlings::exercise::test::test_clean::{{closure}}::h999b38a51b2668d4 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:254:20 [INFO] [stdout] 22: 0x5a44705f8786 - core::ops::function::FnOnce::call_once::h6fc3b9984e096776 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x5a447064108b - core::ops::function::FnOnce::call_once::h651e3187cb632f8b [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5a447064108b - test::__rust_begin_short_backtrace::hf087c08482082584 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:632:18 [INFO] [stdout] 25: 0x5a4470640999 - test::run_test_in_process::{{closure}}::h028b11125eb38b18 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:655:60 [INFO] [stdout] 26: 0x5a4470640999 - as core::ops::function::FnOnce<()>>::call_once::h8a69fc59e5c0ffcd [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x5a4470640999 - std::panicking::try::do_call::h53d2549af1773521 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:573:40 [INFO] [stdout] 28: 0x5a4470640999 - std::panicking::try::h327579c208c8ae37 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:536:19 [INFO] [stdout] 29: 0x5a4470640999 - std::panic::catch_unwind::hae7e4a4da155a27e [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panic.rs:358:14 [INFO] [stdout] 30: 0x5a4470640999 - test::run_test_in_process::hef0a7b0ac1ee3437 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:655:27 [INFO] [stdout] 31: 0x5a4470640999 - test::run_test::{{closure}}::h007633ec4ae045b1 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:576:43 [INFO] [stdout] 32: 0x5a447060370a - test::run_test::{{closure}}::hf3a8c9852b545b46 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:606:41 [INFO] [stdout] 33: 0x5a447060370a - std::sys::backtrace::__rust_begin_short_backtrace::ha442d5d7942f6ee9 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 34: 0x5a4470607176 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc8fd461cdc84b676 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/thread/mod.rs:561:17 [INFO] [stdout] 35: 0x5a4470607176 - as core::ops::function::FnOnce<()>>::call_once::h5a459cc955f063ed [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x5a4470607176 - std::panicking::try::do_call::hc249aed3a6c9c972 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:573:40 [INFO] [stdout] 37: 0x5a4470607176 - std::panicking::try::h649add41232b7ab3 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:536:19 [INFO] [stdout] 38: 0x5a4470607176 - std::panic::catch_unwind::h2fd522623ccd57b0 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panic.rs:358:14 [INFO] [stdout] 39: 0x5a4470607176 - std::thread::Builder::spawn_unchecked_::{{closure}}::h685de412d0d20b6b [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/thread/mod.rs:559:30 [INFO] [stdout] 40: 0x5a4470607176 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hf3391e711cf5434d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x5a44707aa47b - as core::ops::function::FnOnce>::call_once::hc98bb0f9729b604d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 42: 0x5a44707aa47b - as core::ops::function::FnOnce>::call_once::h3b479d8e9f1fef9f [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 43: 0x5a44707aa47b - std::sys::pal::unix::thread::Thread::new::thread_start::he3d5da9652362070 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x77e6937c0ac3 - [INFO] [stdout] 45: 0x77e693851a04 - clone [INFO] [stdout] 46: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at src/exercise.rs:328:38: [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/./rmeta0edFjO\"\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: 0x5a44707a46da - std::backtrace_rs::backtrace::libunwind::trace::h3dab7ffe210583a3 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stdout] 1: 0x5a44707a46da - std::backtrace_rs::backtrace::trace_unsynchronized::h85ec3139dd4f9047 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x5a44707a46da - std::sys::backtrace::_print_fmt::h3447259688950eab [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5a44707a46da - ::fmt::ha8d24a0f27cc401d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5a44707cb9a3 - core::fmt::rt::Argument::fmt::h650b92642f481125 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/fmt/rt.rs:177:76 [INFO] [stdout] 5: 0x5a44707cb9a3 - core::fmt::write::h5becf96591c394eb [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/fmt/mod.rs:1437:21 [INFO] [stdout] 6: 0x5a44707a1313 - std::io::Write::write_fmt::h61fb565ee25d88c6 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/io/mod.rs:1887:15 [INFO] [stdout] 7: 0x5a44707a4522 - std::sys::backtrace::BacktraceLock::print::hae1dc20f39b0ae80 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 8: 0x5a44707a5b5e - std::panicking::default_hook::{{closure}}::hb3023fc9edf847a9 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:284:22 [INFO] [stdout] 9: 0x5a44707a5967 - std::panicking::default_hook::h271aee2d85880663 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:308:9 [INFO] [stdout] 10: 0x5a447063c448 - as core::ops::function::Fn>::call::hbfe4f2a7834d388d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 11: 0x5a447063c448 - test::test_main::{{closure}}::hbb7d4fde4185abc5 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:134:21 [INFO] [stdout] 12: 0x5a44707a6378 - as core::ops::function::Fn>::call::hd4cbe0a9e8955cde [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1984:9 [INFO] [stdout] 13: 0x5a44707a6378 - std::panicking::rust_panic_with_hook::he05f4a167c1908ac [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:825:13 [INFO] [stdout] 14: 0x5a44707a602a - std::panicking::begin_panic_handler::{{closure}}::h79780775730ab9df [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:690:13 [INFO] [stdout] 15: 0x5a44707a4ba9 - std::sys::backtrace::__rust_end_short_backtrace::h753217146a30d8a2 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 16: 0x5a44707a5cbd - rust_begin_unwind [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:681:5 [INFO] [stdout] 17: 0x5a44707ca380 - core::panicking::panic_fmt::h9ad4c3d87a3eb4ad [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/panicking.rs:75:14 [INFO] [stdout] 18: 0x5a44707ca7f6 - core::result::unwrap_failed::h865c91c1a27f7a85 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/result.rs:1699:5 [INFO] [stdout] 19: 0x5a4470601c36 - core::result::Result::unwrap::h22b0726cab14d1a7 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/result.rs:1104:23 [INFO] [stdout] 20: 0x5a4470601c36 - rustlings::exercise::test::test_exercise_with_output::h15812176f10208af [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:328:19 [INFO] [stdout] 21: 0x5a4470601a47 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hdd4c91d10fd5c8b7 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:321:35 [INFO] [stdout] 22: 0x5a44705f8806 - core::ops::function::FnOnce::call_once::hb1fd6bf97dd66764 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x5a447064108b - core::ops::function::FnOnce::call_once::h651e3187cb632f8b [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5a447064108b - test::__rust_begin_short_backtrace::hf087c08482082584 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:632:18 [INFO] [stdout] 25: 0x5a4470640999 - test::run_test_in_process::{{closure}}::h028b11125eb38b18 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:655:60 [INFO] [stdout] 26: 0x5a4470640999 - as core::ops::function::FnOnce<()>>::call_once::h8a69fc59e5c0ffcd [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 27: 0x5a4470640999 - std::panicking::try::do_call::h53d2549af1773521 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:573:40 [INFO] [stdout] 28: 0x5a4470640999 - std::panicking::try::h327579c208c8ae37 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:536:19 [INFO] [stdout] 29: 0x5a4470640999 - std::panic::catch_unwind::hae7e4a4da155a27e [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panic.rs:358:14 [INFO] [stdout] 30: 0x5a4470640999 - test::run_test_in_process::hef0a7b0ac1ee3437 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:655:27 [INFO] [stdout] 31: 0x5a4470640999 - test::run_test::{{closure}}::h007633ec4ae045b1 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:576:43 [INFO] [stdout] 32: 0x5a447060370a - test::run_test::{{closure}}::hf3a8c9852b545b46 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/test/src/lib.rs:606:41 [INFO] [stdout] 33: 0x5a447060370a - std::sys::backtrace::__rust_begin_short_backtrace::ha442d5d7942f6ee9 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 34: 0x5a4470607176 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc8fd461cdc84b676 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/thread/mod.rs:561:17 [INFO] [stdout] 35: 0x5a4470607176 - as core::ops::function::FnOnce<()>>::call_once::h5a459cc955f063ed [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 36: 0x5a4470607176 - std::panicking::try::do_call::hc249aed3a6c9c972 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:573:40 [INFO] [stdout] 37: 0x5a4470607176 - std::panicking::try::h649add41232b7ab3 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panicking.rs:536:19 [INFO] [stdout] 38: 0x5a4470607176 - std::panic::catch_unwind::h2fd522623ccd57b0 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/panic.rs:358:14 [INFO] [stdout] 39: 0x5a4470607176 - std::thread::Builder::spawn_unchecked_::{{closure}}::h685de412d0d20b6b [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/thread/mod.rs:559:30 [INFO] [stdout] 40: 0x5a4470607176 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hf3391e711cf5434d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 41: 0x5a44707aa47b - as core::ops::function::FnOnce>::call_once::hc98bb0f9729b604d [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 42: 0x5a44707aa47b - as core::ops::function::FnOnce>::call_once::h3b479d8e9f1fef9f [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/alloc/src/boxed.rs:1970:9 [INFO] [stdout] 43: 0x5a44707aa47b - std::sys::pal::unix::thread::Thread::new::thread_start::he3d5da9652362070 [INFO] [stdout] at /rustc/ed7f3d77595b4831fdf085f2529aa13b5b51ff7d/library/std/src/sys/pal/unix/thread.rs:105:17 [INFO] [stdout] 44: 0x77e6937c0ac3 - [INFO] [stdout] 45: 0x77e693851a04 - clone [INFO] [stdout] 46: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] exercise::test::test_clean [INFO] [stdout] exercise::test::test_exercise_with_output [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "58f2bc10cc3835391975b9bc4ce8c2a09024989dc79cb787e11a6773d34517bc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58f2bc10cc3835391975b9bc4ce8c2a09024989dc79cb787e11a6773d34517bc", kill_on_drop: false }` [INFO] [stdout] 58f2bc10cc3835391975b9bc4ce8c2a09024989dc79cb787e11a6773d34517bc