[INFO] cloning repository https://github.com/Jooker188/exo-rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jooker188/exo-rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJooker188%2Fexo-rustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJooker188%2Fexo-rustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 03713f49097169d2673b464a1b155d2ee3982790 [INFO] testing Jooker188/exo-rustlings against beta-2026-01-20 for beta-1.94-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJooker188%2Fexo-rustlings" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Jooker188/exo-rustlings [INFO] finished tweaking git repo https://github.com/Jooker188/exo-rustlings [INFO] tweaked toml for git repo https://github.com/Jooker188/exo-rustlings written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Jooker188/exo-rustlings on toolchain beta-2026-01-20 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Jooker188/exo-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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing Jooker188/exo-rustlings against beta-2026-01-20 for beta-1.94-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJooker188%2Fexo-rustlings" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Jooker188/exo-rustlings [INFO] finished tweaking git repo https://github.com/Jooker188/exo-rustlings [INFO] tweaked toml for git repo https://github.com/Jooker188/exo-rustlings written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Jooker188/exo-rustlings on toolchain beta-2026-01-20 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Jooker188/exo-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" "+beta-2026-01-20" "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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded indicatif v0.17.8 [INFO] [stderr] Downloaded which v6.0.1 [INFO] [stderr] Downloaded console v0.15.8 [INFO] [stderr] Downloaded toml_edit v0.22.11 [INFO] [stderr] Downloaded portable-atomic v1.6.0 [INFO] [stderr] Downloaded winnow v0.6.6 [INFO] [stderr] Downloaded winsafe v0.0.19 [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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6f97b6f3b3b801aa1e8d919933f99b3aff6855471946b49365cda02a5aa67cde [INFO] running `Command { std: "docker" "start" "-a" "6f97b6f3b3b801aa1e8d919933f99b3aff6855471946b49365cda02a5aa67cde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6f97b6f3b3b801aa1e8d919933f99b3aff6855471946b49365cda02a5aa67cde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f97b6f3b3b801aa1e8d919933f99b3aff6855471946b49365cda02a5aa67cde", kill_on_drop: false }` [INFO] [stdout] 6f97b6f3b3b801aa1e8d919933f99b3aff6855471946b49365cda02a5aa67cde [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2d8271ae0e2bac5a42958a961d798fc3f0ef1eb2245a92990eaf96c70f0e0160 [INFO] running `Command { std: "docker" "start" "-a" "2d8271ae0e2bac5a42958a961d798fc3f0ef1eb2245a92990eaf96c70f0e0160", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.81 [INFO] [stderr] Compiling serde v1.0.198 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling utf8parse v0.2.1 [INFO] [stderr] Compiling colorchoice v1.0.0 [INFO] [stderr] Compiling anstyle v1.0.6 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling rustix v0.38.32 [INFO] [stderr] Compiling portable-atomic v1.6.0 [INFO] [stderr] Compiling log v0.4.21 [INFO] [stderr] Compiling anstyle-query v1.0.2 [INFO] [stderr] Compiling clap_lex v0.7.0 [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling unicode-width v0.1.11 [INFO] [stderr] Compiling anyhow v1.0.82 [INFO] [stderr] Compiling serde_json v1.0.116 [INFO] [stderr] Compiling anstyle-parse v0.2.3 [INFO] [stderr] Compiling walkdir v2.5.0 [INFO] [stderr] Compiling hashbrown v0.14.3 [INFO] [stderr] Compiling bitflags v2.5.0 [INFO] [stderr] Compiling anstream v0.6.13 [INFO] [stderr] Compiling itoa v1.0.11 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling either v1.11.0 [INFO] [stderr] Compiling home v0.5.9 [INFO] [stderr] Compiling ryu v1.0.17 [INFO] [stderr] Compiling winnow v0.6.6 [INFO] [stderr] Compiling shlex v1.3.0 [INFO] [stderr] Compiling clap_builder v4.5.2 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling filetime v0.2.23 [INFO] [stderr] Compiling mio v0.8.11 [INFO] [stderr] Compiling console v0.15.8 [INFO] [stderr] Compiling inotify v0.9.6 [INFO] [stderr] Compiling indexmap v2.2.6 [INFO] [stderr] Compiling quote v1.0.36 [INFO] [stderr] Compiling syn v2.0.60 [INFO] [stderr] Compiling indicatif v0.17.8 [INFO] [stderr] Compiling crossbeam-channel v0.5.12 [INFO] [stderr] Compiling notify v6.1.1 [INFO] [stderr] Compiling which v6.0.1 [INFO] [stderr] Compiling notify-debouncer-mini v0.4.1 [INFO] [stderr] Compiling serde_derive v1.0.198 [INFO] [stderr] Compiling clap_derive v4.5.4 [INFO] [stderr] Compiling clap v4.5.4 [INFO] [stderr] Compiling serde_spanned v0.6.5 [INFO] [stderr] Compiling toml_datetime v0.6.5 [INFO] [stderr] Compiling toml_edit v0.22.11 [INFO] [stderr] Compiling rustlings v5.6.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:125:20 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 125 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.15s [INFO] running `Command { std: "docker" "inspect" "2d8271ae0e2bac5a42958a961d798fc3f0ef1eb2245a92990eaf96c70f0e0160", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2d8271ae0e2bac5a42958a961d798fc3f0ef1eb2245a92990eaf96c70f0e0160", kill_on_drop: false }` [INFO] [stdout] 2d8271ae0e2bac5a42958a961d798fc3f0ef1eb2245a92990eaf96c70f0e0160 [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d4f2a88ac742c5f1f64b1e99a9fc735b726e518df4c1e6d625f72fcf6d0e2208 [INFO] running `Command { std: "docker" "start" "-a" "d4f2a88ac742c5f1f64b1e99a9fc735b726e518df4c1e6d625f72fcf6d0e2208", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Compiling memchr v2.7.2 [INFO] [stderr] Compiling regex-syntax v0.8.3 [INFO] [stderr] Compiling predicates-core v1.0.6 [INFO] [stderr] Compiling termtree v0.4.1 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difflib v0.4.0 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Compiling wait-timeout v0.2.0 [INFO] [stderr] Compiling glob v0.3.1 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:125:20 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 125 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling predicates-tree v1.0.9 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling float-cmp v0.9.0 [INFO] [stderr] Compiling regex-automata v0.4.6 [INFO] [stderr] Compiling regex v1.10.4 [INFO] [stderr] Compiling bstr v1.9.1 [INFO] [stderr] Compiling predicates v3.1.0 [INFO] [stderr] Compiling assert_cmd v2.0.14 [INFO] [stderr] Compiling rustlings v5.6.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:125:20 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 125 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 4.40s [INFO] running `Command { std: "docker" "inspect" "d4f2a88ac742c5f1f64b1e99a9fc735b726e518df4c1e6d625f72fcf6d0e2208", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d4f2a88ac742c5f1f64b1e99a9fc735b726e518df4c1e6d625f72fcf6d0e2208", kill_on_drop: false }` [INFO] [stdout] d4f2a88ac742c5f1f64b1e99a9fc735b726e518df4c1e6d625f72fcf6d0e2208 [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 2b74d191f3e8589db1bf46a464fdbb638d3311a99186da292cf353328e6a063b [INFO] running `Command { std: "docker" "start" "-a" "2b74d191f3e8589db1bf46a464fdbb638d3311a99186da292cf353328e6a063b", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/exercise.rs:125:20 [INFO] [stderr] | [INFO] [stderr] 125 | pub fn compile(&self) -> Result { [INFO] [stderr] | ^^^^^ ^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 125 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stderr] | ++++ [INFO] [stderr] [INFO] [stderr] warning: `rustlings` (bin "rustlings") generated 1 warning (run `cargo fix --bin "rustlings" -p rustlings` to apply 1 suggestion) [INFO] [stderr] warning: `rustlings` (bin "rustlings" test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-f4a7b1d2721601aa) [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test exercise::test::test_pending_state ... ok [INFO] [stdout] test exercise::test::test_finished_exercise ... ok [INFO] [stdout] test exercise::test::test_not_done ... 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] [INFO] [stdout] thread 'exercise::test::test_clean' (25) panicked at src/exercise.rs:354:35: [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: 0x5cca40153d72 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5cca40153d72 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5cca40153d72 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x5cca40153d72 - ::fmt::hb7e843cde1bc81a3 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x5cca40163f8a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x5cca40163f8a - core::fmt::write::h952c506e2dbe9cff [INFO] [stdout] 6: 0x5cca401227c6 - std::io::default_write_fmt::hd23bd8145c03a23a [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5cca401227c6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13 [INFO] [stdout] 8: 0x5cca401331c9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x5cca401331c9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x5cca40133061 - std::panicking::default_hook::h0134d220cc034c02 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x5cca400eb1fe - as core::ops::function::Fn>::call::hb2e68dca3970e3ca [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 12: 0x5cca400eb1fe - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5cca40133442 - as core::ops::function::Fn>::call::haebee478d0f56cf4 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 14: 0x5cca40133442 - std::panicking::panic_with_hook::h8119b6db1fef734f [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x5cca40133288 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x5cca4012e5f9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x5cca4011721d - __rustc[e4c6931bd8050421]::rust_begin_unwind [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x5cca4016b65c - core::panicking::panic_fmt::hb1614a3ff6840071 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x5cca4016acd2 - core::result::unwrap_failed::h7d4c34940aded59c [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x5cca400c34f4 - core::result::Result::unwrap::h38643ba4c109caf2 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x5cca400c34f4 - rustlings::exercise::test::test_clean::hbae04f711c1341ad [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:354:35 [INFO] [stdout] 22: 0x5cca400c38a7 - rustlings::exercise::test::test_clean::{{closure}}::h9eee0c2cb3843746 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:353:20 [INFO] [stdout] 23: 0x5cca400bc066 - core::ops::function::FnOnce::call_once::h30d62d8fe7205966 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5cca400eaffb - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5cca400eaffb - test::__rust_begin_short_backtrace::he30322a73a0e9ea6 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x5cca400fe9ca - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x5cca400fe9ca - as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x5cca400fe9ca - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x5cca400fe9ca - std::panicking::catch_unwind::h54b1de7ceab578bf [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x5cca400fe9ca - std::panic::catch_unwind::h60c29b7a9d0246b1 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5cca400fe9ca - test::run_test_in_process::h6099b5f871379b13 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x5cca400fe9ca - test::run_test::{{closure}}::h926ce0a38281a4c8 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x5cca400d8e24 - test::run_test::{{closure}}::h508de21a9afc7140 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x5cca400d8e24 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x5cca400dc6e2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13 [INFO] [stdout] 36: 0x5cca400dc6e2 - as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x5cca400dc6e2 - std::panicking::catch_unwind::do_call::h0bba3937b4892238 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x5cca400dc6e2 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x5cca400dc6e2 - std::panic::catch_unwind::hb2fa05d52ed0124e [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5cca400dc6e2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26 [INFO] [stdout] 41: 0x5cca400dc6e2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5cca401296bf - as core::ops::function::FnOnce>::call_once::hf234e0d1d1d272ba [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9 [INFO] [stdout] 43: 0x5cca401296bf - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17 [INFO] [stdout] 44: 0x723e56191aa4 - [INFO] [stdout] 45: 0x723e5621ea64 - clone [INFO] [stdout] 46: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' (26) panicked at src/exercise.rs:445:38: [INFO] [stdout] called `Result::unwrap()` on an `Err` value: ExerciseOutput { stdout: "", stderr: "\u{1b}[1m\u{1b}[91merror\u{1b}[0m\u{1b}[1m: couldn't create a temp dir: Read-only file system (os error 30) at path \"/opt/rustwide/workdir/./rmeta0ReoaQ\"\u{1b}[0m\n\n\u{1b}[1m\u{1b}[91merror\u{1b}[0m\u{1b}[1m: aborting due to 1 previous error\u{1b}[0m\n\n" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5cca40153d72 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5cca40153d72 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5cca40153d72 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x5cca40153d72 - ::fmt::hb7e843cde1bc81a3 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x5cca40163f8a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x5cca40163f8a - core::fmt::write::h952c506e2dbe9cff [INFO] [stdout] 6: 0x5cca401227c6 - std::io::default_write_fmt::hd23bd8145c03a23a [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5cca401227c6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13 [INFO] [stdout] 8: 0x5cca401331c9 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x5cca401331c9 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x5cca40133061 - std::panicking::default_hook::h0134d220cc034c02 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x5cca400eb1fe - as core::ops::function::Fn>::call::hb2e68dca3970e3ca [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 12: 0x5cca400eb1fe - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5cca40133442 - as core::ops::function::Fn>::call::haebee478d0f56cf4 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 14: 0x5cca40133442 - std::panicking::panic_with_hook::h8119b6db1fef734f [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x5cca40133288 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x5cca4012e5f9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x5cca4011721d - __rustc[e4c6931bd8050421]::rust_begin_unwind [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x5cca4016b65c - core::panicking::panic_fmt::hb1614a3ff6840071 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x5cca4016acd2 - core::result::unwrap_failed::h7d4c34940aded59c [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x5cca400c4524 - core::result::Result::unwrap::hf05e857dcfe5512b [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x5cca400c4524 - rustlings::exercise::test::test_exercise_with_output::haaa3b1b26252d43d [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:445:38 [INFO] [stdout] 22: 0x5cca400c47a7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h04889e47e43b2007 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:438:35 [INFO] [stdout] 23: 0x5cca400bc1b6 - core::ops::function::FnOnce::call_once::he33392e177f86745 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5cca400eaffb - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5cca400eaffb - test::__rust_begin_short_backtrace::he30322a73a0e9ea6 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x5cca400fe9ca - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x5cca400fe9ca - as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x5cca400fe9ca - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x5cca400fe9ca - std::panicking::catch_unwind::h54b1de7ceab578bf [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x5cca400fe9ca - std::panic::catch_unwind::h60c29b7a9d0246b1 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5cca400fe9ca - test::run_test_in_process::h6099b5f871379b13 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x5cca400fe9ca - test::run_test::{{closure}}::h926ce0a38281a4c8 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x5cca400d8e24 - test::run_test::{{closure}}::h508de21a9afc7140 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x5cca400d8e24 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x5cca400dc6e2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13 [INFO] [stdout] 36: 0x5cca400dc6e2 - as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x5cca400dc6e2 - std::panicking::catch_unwind::do_call::h0bba3937b4892238 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x5cca400dc6e2 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x5cca400dc6e2 - std::panic::catch_unwind::hb2fa05d52ed0124e [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5cca400dc6e2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29 [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26 [INFO] [stdout] 41: 0x5cca400dc6e2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5cca401296bf - as core::ops::function::FnOnce>::call_once::hf234e0d1d1d272ba [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9 [INFO] [stdout] 43: 0x5cca401296bf - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b [INFO] [stdout] at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17 [INFO] [stdout] 44: 0x723e56191aa4 - [INFO] [stdout] 45: 0x723e5621ea64 - 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. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "2b74d191f3e8589db1bf46a464fdbb638d3311a99186da292cf353328e6a063b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2b74d191f3e8589db1bf46a464fdbb638d3311a99186da292cf353328e6a063b", kill_on_drop: false }` [INFO] [stdout] 2b74d191f3e8589db1bf46a464fdbb638d3311a99186da292cf353328e6a063b