[INFO] cloning repository https://github.com/kwon-heejeong/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kwon-heejeong/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkwon-heejeong%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkwon-heejeong%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7992ea85b4f53c35b91eec2c6007c742272ebae6 [INFO] testing kwon-heejeong/rustlings against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkwon-heejeong%2Frustlings" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/kwon-heejeong/rustlings [INFO] finished tweaking git repo https://github.com/kwon-heejeong/rustlings [INFO] tweaked toml for git repo https://github.com/kwon-heejeong/rustlings written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kwon-heejeong/rustlings on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kwon-heejeong/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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] aa514187fcfd0e4787f0ed9539cb051119a8a9e17c9fe0a27e7c01d8de65a4b8 [INFO] running `Command { std: "docker" "start" "-a" "aa514187fcfd0e4787f0ed9539cb051119a8a9e17c9fe0a27e7c01d8de65a4b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "aa514187fcfd0e4787f0ed9539cb051119a8a9e17c9fe0a27e7c01d8de65a4b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa514187fcfd0e4787f0ed9539cb051119a8a9e17c9fe0a27e7c01d8de65a4b8", kill_on_drop: false }` [INFO] [stdout] aa514187fcfd0e4787f0ed9539cb051119a8a9e17c9fe0a27e7c01d8de65a4b8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a1d1058811a8a56d99b719520471f45c2e6e922ea7fae2c1dcfc3eb951bae842 [INFO] running `Command { std: "docker" "start" "-a" "a1d1058811a8a56d99b719520471f45c2e6e922ea7fae2c1dcfc3eb951bae842", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling instant v0.1.10 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling termios v0.3.3 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling console v0.14.1 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v4.6.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 12s [INFO] running `Command { std: "docker" "inspect" "a1d1058811a8a56d99b719520471f45c2e6e922ea7fae2c1dcfc3eb951bae842", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a1d1058811a8a56d99b719520471f45c2e6e922ea7fae2c1dcfc3eb951bae842", kill_on_drop: false }` [INFO] [stdout] a1d1058811a8a56d99b719520471f45c2e6e922ea7fae2c1dcfc3eb951bae842 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 69e38487c3c3444072e93a398832b0c07b135ba4f7e3c7a21ca44aed09ce2a71 [INFO] running `Command { std: "docker" "start" "-a" "69e38487c3c3444072e93a398832b0c07b135ba4f7e3c7a21ca44aed09ce2a71", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v4.6.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 14.04s [INFO] running `Command { std: "docker" "inspect" "69e38487c3c3444072e93a398832b0c07b135ba4f7e3c7a21ca44aed09ce2a71", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "69e38487c3c3444072e93a398832b0c07b135ba4f7e3c7a21ca44aed09ce2a71", kill_on_drop: false }` [INFO] [stdout] 69e38487c3c3444072e93a398832b0c07b135ba4f7e3c7a21ca44aed09ce2a71 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 41b723aa80dd2fb1fc09a7f4fca03c93af33b58917cc87d8e883edfd98fc37e4 [INFO] running `Command { std: "docker" "start" "-a" "41b723aa80dd2fb1fc09a7f4fca03c93af33b58917cc87d8e883edfd98fc37e4", kill_on_drop: false }` [INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stderr] --> src/exercise.rs:109:20 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn compile(&self) -> Result { [INFO] [stderr] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stderr] | | [INFO] [stderr] | this lifetime flows to the output [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stderr] | [INFO] [stderr] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stderr] | ++++ [INFO] [stderr] [INFO] [stderr] warning: `rustlings` (bin "rustlings" test) generated 1 warning [INFO] [stderr] warning: `rustlings` (bin "rustlings") generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s [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] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-108ffd94dbb10f63) [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] [INFO] [stdout] thread 'exercise::test::test_clean' panicked at src/exercise.rs:270:36: [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: 0x55bf74c42642 - std::backtrace_rs::backtrace::libunwind::trace::h73a647620bf1c49d [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x55bf74c42642 - std::backtrace_rs::backtrace::trace_unsynchronized::hd4d513ed96cb3cb1 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x55bf74c42642 - std::sys::backtrace::_print_fmt::h61bb95f7476aafa5 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x55bf74c42642 - ::fmt::ha2e7e3a01df69042 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x55bf74c680c3 - core::fmt::rt::Argument::fmt::hf14163372f0f9a76 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x55bf74c680c3 - core::fmt::write::h7cb8f63788cd01d2 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/fmt/mod.rs:1465:25 [INFO] [stdout] 6: 0x55bf74c3f513 - std::io::default_write_fmt::h9ed739ccee8a150c [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x55bf74c3f513 - std::io::Write::write_fmt::h1c0a32da913b32f1 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x55bf74c42492 - std::sys::backtrace::BacktraceLock::print::h3ec4d7883eb25e61 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x55bf74c43c6c - std::panicking::default_hook::{{closure}}::h29548987efd832cb [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:300:27 [INFO] [stdout] 10: 0x55bf74c43ac2 - std::panicking::default_hook::ha25170a15c643514 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x55bf74b97d94 - as core::ops::function::Fn>::call::h562adeecbf43c420 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 12: 0x55bf74b97d94 - test::test_main_with_exit_callback::{{closure}}::h97dd2a879d27e0e4 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x55bf74c4474b - as core::ops::function::Fn>::call::h7e85cbdbda26fdb7 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 14: 0x55bf74c4474b - std::panicking::rust_panic_with_hook::h0d81afcd829aa24b [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x55bf74c4441a - std::panicking::begin_panic_handler::{{closure}}::hc84a33f1202346cf [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x55bf74c42b39 - std::sys::backtrace::__rust_end_short_backtrace::h373067a14f6c59aa [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 17: 0x55bf74c440ad - __rustc[beb0385846a06d21]::rust_begin_unwind [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x55bf74c66c10 - core::panicking::panic_fmt::ha33fa2ae772efba9 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x55bf74c66fb6 - core::result::unwrap_failed::hfbbd3c78a73fea3d [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/result.rs:1761:5 [INFO] [stdout] 20: 0x55bf74b59714 - core::result::Result::unwrap::hd9c7423cbb143251 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/result.rs:1167:23 [INFO] [stdout] 21: 0x55bf74b59714 - rustlings::exercise::test::test_clean::h59d1959f8526624c [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:270:36 [INFO] [stdout] 22: 0x55bf74b5d3a9 - rustlings::exercise::test::test_clean::{{closure}}::hb24edb09886baf89 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:20 [INFO] [stdout] 23: 0x55bf74b5d3a9 - core::ops::function::FnOnce::call_once::hc680b27befaf735e [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55bf74b9d4cb - core::ops::function::FnOnce::call_once::hf84b9c3d864a6959 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55bf74b9d4cb - test::__rust_begin_short_backtrace::h5724e31441c16fcb [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x55bf74b9c70e - test::run_test_in_process::{{closure}}::hbc28c9aa91793d7d [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:671:74 [INFO] [stdout] 27: 0x55bf74b9c70e - as core::ops::function::FnOnce<()>>::call_once::hc17b0e238c0f8f3e [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55bf74b9c70e - std::panicking::catch_unwind::do_call::hcdbce0d6dd6c83ce [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x55bf74b9c70e - std::panicking::catch_unwind::h9477967ceea044e8 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x55bf74b9c70e - std::panic::catch_unwind::h616a2e249da12e16 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x55bf74b9c70e - test::run_test_in_process::h2758deb0f2e54430 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x55bf74b9c70e - test::run_test::{{closure}}::habe5cd2564b18aaa [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x55bf74b602b4 - test::run_test::{{closure}}::h9a0a6928f1a15421 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x55bf74b602b4 - std::sys::backtrace::__rust_begin_short_backtrace::hd68b5332434a22ca [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 35: 0x55bf74b63c5a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h264ddcc3098eacae [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x55bf74b63c5a - as core::ops::function::FnOnce<()>>::call_once::h9fa39489749d6f3c [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55bf74b63c5a - std::panicking::catch_unwind::do_call::hb9a1944b9f85100f [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x55bf74b63c5a - std::panicking::catch_unwind::h0c6f100786c0dad8 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x55bf74b63c5a - std::panic::catch_unwind::hf6084e2723385823 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x55bf74b63c5a - std::thread::Builder::spawn_unchecked_::{{closure}}::hf0af58ce658143ad [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x55bf74b63c5a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h88a14f9b2e79f9de [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55bf74c476a7 - as core::ops::function::FnOnce>::call_once::hf31256ba38644b65 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 43: 0x55bf74c476a7 - as core::ops::function::FnOnce>::call_once::h100ad77f3448041b [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 44: 0x55bf74c476a7 - std::sys::pal::unix::thread::Thread::new::thread_start::h1a22ded422ce395b [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/pal/unix/thread.rs:97:17 [INFO] [stdout] 45: 0x799b3cb60aa4 - [INFO] [stdout] 46: 0x799b3cbeda34 - clone [INFO] [stdout] 47: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at src/exercise.rs:343:38: [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/./rmeta7eKW0V\"\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: 0x55bf74c42642 - std::backtrace_rs::backtrace::libunwind::trace::h73a647620bf1c49d [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x55bf74c42642 - std::backtrace_rs::backtrace::trace_unsynchronized::hd4d513ed96cb3cb1 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x55bf74c42642 - std::sys::backtrace::_print_fmt::h61bb95f7476aafa5 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x55bf74c42642 - ::fmt::ha2e7e3a01df69042 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x55bf74c680c3 - core::fmt::rt::Argument::fmt::hf14163372f0f9a76 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x55bf74c680c3 - core::fmt::write::h7cb8f63788cd01d2 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/fmt/mod.rs:1465:25 [INFO] [stdout] 6: 0x55bf74c3f513 - std::io::default_write_fmt::h9ed739ccee8a150c [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x55bf74c3f513 - std::io::Write::write_fmt::h1c0a32da913b32f1 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x55bf74c42492 - std::sys::backtrace::BacktraceLock::print::h3ec4d7883eb25e61 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x55bf74c43c6c - std::panicking::default_hook::{{closure}}::h29548987efd832cb [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:300:27 [INFO] [stdout] 10: 0x55bf74c43ac2 - std::panicking::default_hook::ha25170a15c643514 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x55bf74b97d94 - as core::ops::function::Fn>::call::h562adeecbf43c420 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 12: 0x55bf74b97d94 - test::test_main_with_exit_callback::{{closure}}::h97dd2a879d27e0e4 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x55bf74c4474b - as core::ops::function::Fn>::call::h7e85cbdbda26fdb7 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 14: 0x55bf74c4474b - std::panicking::rust_panic_with_hook::h0d81afcd829aa24b [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x55bf74c4441a - std::panicking::begin_panic_handler::{{closure}}::hc84a33f1202346cf [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x55bf74c42b39 - std::sys::backtrace::__rust_end_short_backtrace::h373067a14f6c59aa [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 17: 0x55bf74c440ad - __rustc[beb0385846a06d21]::rust_begin_unwind [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x55bf74c66c10 - core::panicking::panic_fmt::ha33fa2ae772efba9 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x55bf74c66fb6 - core::result::unwrap_failed::hfbbd3c78a73fea3d [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/result.rs:1761:5 [INFO] [stdout] 20: 0x55bf74b5a7cf - core::result::Result::unwrap::hcdd05c141ecaa202 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/result.rs:1167:23 [INFO] [stdout] 21: 0x55bf74b5a7cf - rustlings::exercise::test::test_exercise_with_output::h6a9f54dc46e7537a [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:343:38 [INFO] [stdout] 22: 0x55bf74b5d389 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hf1dab41d878aa9c1 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:336:35 [INFO] [stdout] 23: 0x55bf74b5d389 - core::ops::function::FnOnce::call_once::hc3f7cf1116d457ba [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55bf74b9d4cb - core::ops::function::FnOnce::call_once::hf84b9c3d864a6959 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55bf74b9d4cb - test::__rust_begin_short_backtrace::h5724e31441c16fcb [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x55bf74b9c70e - test::run_test_in_process::{{closure}}::hbc28c9aa91793d7d [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:671:74 [INFO] [stdout] 27: 0x55bf74b9c70e - as core::ops::function::FnOnce<()>>::call_once::hc17b0e238c0f8f3e [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55bf74b9c70e - std::panicking::catch_unwind::do_call::hcdbce0d6dd6c83ce [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x55bf74b9c70e - std::panicking::catch_unwind::h9477967ceea044e8 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x55bf74b9c70e - std::panic::catch_unwind::h616a2e249da12e16 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x55bf74b9c70e - test::run_test_in_process::h2758deb0f2e54430 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x55bf74b9c70e - test::run_test::{{closure}}::habe5cd2564b18aaa [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x55bf74b602b4 - test::run_test::{{closure}}::h9a0a6928f1a15421 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x55bf74b602b4 - std::sys::backtrace::__rust_begin_short_backtrace::hd68b5332434a22ca [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 35: 0x55bf74b63c5a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h264ddcc3098eacae [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x55bf74b63c5a - as core::ops::function::FnOnce<()>>::call_once::h9fa39489749d6f3c [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55bf74b63c5a - std::panicking::catch_unwind::do_call::hb9a1944b9f85100f [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x55bf74b63c5a - std::panicking::catch_unwind::h0c6f100786c0dad8 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x55bf74b63c5a - std::panic::catch_unwind::hf6084e2723385823 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x55bf74b63c5a - std::thread::Builder::spawn_unchecked_::{{closure}}::hf0af58ce658143ad [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x55bf74b63c5a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h88a14f9b2e79f9de [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55bf74c476a7 - as core::ops::function::FnOnce>::call_once::hf31256ba38644b65 [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 43: 0x55bf74c476a7 - as core::ops::function::FnOnce>::call_once::h100ad77f3448041b [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 44: 0x55bf74c476a7 - std::sys::pal::unix::thread::Thread::new::thread_start::h1a22ded422ce395b [INFO] [stdout] at /rustc/733b47ea4b1b86216f14ef56e49440c33933f230/library/std/src/sys/pal/unix/thread.rs:97:17 [INFO] [stdout] 45: 0x799b3cb60aa4 - [INFO] [stdout] 46: 0x799b3cbeda34 - 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 0.12s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "41b723aa80dd2fb1fc09a7f4fca03c93af33b58917cc87d8e883edfd98fc37e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "41b723aa80dd2fb1fc09a7f4fca03c93af33b58917cc87d8e883edfd98fc37e4", kill_on_drop: false }` [INFO] [stdout] 41b723aa80dd2fb1fc09a7f4fca03c93af33b58917cc87d8e883edfd98fc37e4