[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-xxwlyl [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-xxwlyl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-xxwlyl", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-xxwlyl'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] edf162ac5704ec8c443de927ee833f9e2184c296 [INFO] testing LearningOS/rust-rustlings-xxwlyl against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-xxwlyl" "/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/LearningOS/rust-rustlings-xxwlyl [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-xxwlyl [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-xxwlyl written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-xxwlyl on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-xxwlyl 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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a73fc1e9cb7398d8719fd5ca392cc889ace9c51b313c5e5a767c296877070b60 [INFO] running `Command { std: "docker" "start" "-a" "a73fc1e9cb7398d8719fd5ca392cc889ace9c51b313c5e5a767c296877070b60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a73fc1e9cb7398d8719fd5ca392cc889ace9c51b313c5e5a767c296877070b60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a73fc1e9cb7398d8719fd5ca392cc889ace9c51b313c5e5a767c296877070b60", kill_on_drop: false }` [INFO] [stdout] a73fc1e9cb7398d8719fd5ca392cc889ace9c51b313c5e5a767c296877070b60 [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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ff60686c434b2fce483c671945b37c8f99aec2e8ff3ec993f6efdd51a98d7d17 [INFO] running `Command { std: "docker" "start" "-a" "ff60686c434b2fce483c671945b37c8f99aec2e8ff3ec993f6efdd51a98d7d17", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.137 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling parking_lot_core v0.9.4 [INFO] [stderr] Compiling smallvec v1.10.0 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling tokio v1.21.2 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling bytes v1.2.1 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling socket2 v0.4.7 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling mio v0.8.5 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling tokio-macros v1.8.0 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.5.9 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | 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] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 44.33s [INFO] running `Command { std: "docker" "inspect" "ff60686c434b2fce483c671945b37c8f99aec2e8ff3ec993f6efdd51a98d7d17", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ff60686c434b2fce483c671945b37c8f99aec2e8ff3ec993f6efdd51a98d7d17", kill_on_drop: false }` [INFO] [stdout] ff60686c434b2fce483c671945b37c8f99aec2e8ff3ec993f6efdd51a98d7d17 [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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3d83b2b16d6f6421eb8c3455bbe8cb97ecd771364a1029ba8fede94a477e44d3 [INFO] running `Command { std: "docker" "start" "-a" "3d83b2b16d6f6421eb8c3455bbe8cb97ecd771364a1029ba8fede94a477e44d3", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | 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] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | 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] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 5.67s [INFO] running `Command { std: "docker" "inspect" "3d83b2b16d6f6421eb8c3455bbe8cb97ecd771364a1029ba8fede94a477e44d3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3d83b2b16d6f6421eb8c3455bbe8cb97ecd771364a1029ba8fede94a477e44d3", kill_on_drop: false }` [INFO] [stdout] 3d83b2b16d6f6421eb8c3455bbe8cb97ecd771364a1029ba8fede94a477e44d3 [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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5fb0c29a99db5d1d88942ac96166ac7d62519d952067c266f959e6468f5fe871 [INFO] running `Command { std: "docker" "start" "-a" "5fb0c29a99db5d1d88942ac96166ac7d62519d952067c266f959e6468f5fe871", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/exercise.rs:109:20 [INFO] [stderr] | [INFO] [stderr] 109 | 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] 109 | 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 0.12s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-bac7ed8e435f2867) [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] [INFO] [stdout] thread 'exercise::test::test_clean' (16) panicked at src/exercise.rs:269:36: [INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x636014b199ea - std[da2fd379f16a7ff7]::backtrace_rs::backtrace::libunwind::trace [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x636014b199ea - std[da2fd379f16a7ff7]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x636014b199ea - std[da2fd379f16a7ff7]::sys::backtrace::_print_fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x636014b199ea - <::print::DisplayBacktrace as core[97f61b5528a4c2b4]::fmt::Display>::fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x636014b2e69a - ::fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x636014b2e69a - core[97f61b5528a4c2b4]::fmt::write [INFO] [stdout] 6: 0x636014b1e342 - std[da2fd379f16a7ff7]::io::default_write_fmt::> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x636014b1e342 - as std[da2fd379f16a7ff7]::io::Write>::write_fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/io/mod.rs:1994:13 [INFO] [stdout] 8: 0x636014af884f - ::print [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x636014af884f - std[da2fd379f16a7ff7]::panicking::default_hook::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x636014b11c99 - std[da2fd379f16a7ff7]::panicking::default_hook [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x63601498530c - core[97f61b5528a4c2b4]::ops::function::Fn<(&'a std[da2fd379f16a7ff7]::panic::PanicHookInfo<'b>,), Output = ()> + core[97f61b5528a4c2b4]::marker::Send + core[97f61b5528a4c2b4]::marker::Sync> as core[97f61b5528a4c2b4]::ops::function::Fn<(&std[da2fd379f16a7ff7]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/alloc/src/boxed.rs:2254:9 [INFO] [stdout] 12: 0x63601498530c - test[d0b63a2f043bab5e]::test_main_with_exit_callback::::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x636014b11e52 - core[97f61b5528a4c2b4]::ops::function::Fn<(&'a std[da2fd379f16a7ff7]::panic::PanicHookInfo<'b>,), Output = ()> + core[97f61b5528a4c2b4]::marker::Send + core[97f61b5528a4c2b4]::marker::Sync> as core[97f61b5528a4c2b4]::ops::function::Fn<(&std[da2fd379f16a7ff7]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/alloc/src/boxed.rs:2254:9 [INFO] [stdout] 14: 0x636014b11e52 - std[da2fd379f16a7ff7]::panicking::panic_with_hook [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x636014af8908 - std[da2fd379f16a7ff7]::panicking::panic_handler::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x636014af01c9 - std[da2fd379f16a7ff7]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x636014af961d - __rustc[9f3cd9eabd71303e]::rust_begin_unwind [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x636014b2ef7c - core[97f61b5528a4c2b4]::panicking::panic_fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x636014b2ecf2 - core[97f61b5528a4c2b4]::result::unwrap_failed [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x63601496dffc - >::unwrap [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x63601496dffc - rustlings[7a98c1ece95058eb]::exercise::test::test_clean [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:36 [INFO] [stdout] 22: 0x63601496b667 - rustlings[7a98c1ece95058eb]::exercise::test::test_clean::{closure#0} [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x636014973cd6 - >::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x6360149793eb - core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String> as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x6360149793eb - test[d0b63a2f043bab5e]::__rust_begin_short_backtrace::, fn() -> core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x636014985ddb - test[d0b63a2f043bab5e]::run_test_in_process::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x636014985ddb - as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x636014985ddb - std[da2fd379f16a7ff7]::panicking::catch_unwind::do_call::, core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x636014985ddb - std[da2fd379f16a7ff7]::panicking::catch_unwind::, core[97f61b5528a4c2b4]::panic::unwind_safe::AssertUnwindSafe> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x636014985ddb - std[da2fd379f16a7ff7]::panic::catch_unwind::, core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x636014985ddb - test[d0b63a2f043bab5e]::run_test_in_process [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x636014985ddb - test[d0b63a2f043bab5e]::run_test::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x6360149814f4 - test[d0b63a2f043bab5e]::run_test::{closure#1} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x6360149814f4 - std[da2fd379f16a7ff7]::sys::backtrace::__rust_begin_short_backtrace:: [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x6360149889e2 - std[da2fd379f16a7ff7]::thread::lifecycle::spawn_unchecked::::{closure#1}::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/thread/lifecycle.rs:91:13 [INFO] [stdout] 36: 0x6360149889e2 - ::{closure#1}::{closure#0}> as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x6360149889e2 - std[da2fd379f16a7ff7]::panicking::catch_unwind::do_call::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x6360149889e2 - std[da2fd379f16a7ff7]::panicking::catch_unwind::<(), core[97f61b5528a4c2b4]::panic::unwind_safe::AssertUnwindSafe::{closure#1}::{closure#0}>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x6360149889e2 - std[da2fd379f16a7ff7]::panic::catch_unwind::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x6360149889e2 - std[da2fd379f16a7ff7]::thread::lifecycle::spawn_unchecked::::{closure#1} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/thread/lifecycle.rs:89:26 [INFO] [stdout] 41: 0x6360149889e2 - ::{closure#1} as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x636014b1912f - + core[97f61b5528a4c2b4]::marker::Send> as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/alloc/src/boxed.rs:2240:9 [INFO] [stdout] 43: 0x636014b1912f - ::new::thread_start [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/thread/unix.rs:118:17 [INFO] [stdout] 44: 0x7b707c529aa4 - [INFO] [stdout] 45: 0x7b707c5b6a64 - 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' (17) panicked at src/exercise.rs:342:38: [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/./rmetaok9dKD\"\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: 0x636014b199ea - std[da2fd379f16a7ff7]::backtrace_rs::backtrace::libunwind::trace [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x636014b199ea - std[da2fd379f16a7ff7]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x636014b199ea - std[da2fd379f16a7ff7]::sys::backtrace::_print_fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x636014b199ea - <::print::DisplayBacktrace as core[97f61b5528a4c2b4]::fmt::Display>::fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x636014b2e69a - ::fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x636014b2e69a - core[97f61b5528a4c2b4]::fmt::write [INFO] [stdout] 6: 0x636014b1e342 - std[da2fd379f16a7ff7]::io::default_write_fmt::> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x636014b1e342 - as std[da2fd379f16a7ff7]::io::Write>::write_fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/io/mod.rs:1994:13 [INFO] [stdout] 8: 0x636014af884f - ::print [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x636014af884f - std[da2fd379f16a7ff7]::panicking::default_hook::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x636014b11c99 - std[da2fd379f16a7ff7]::panicking::default_hook [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x63601498530c - core[97f61b5528a4c2b4]::ops::function::Fn<(&'a std[da2fd379f16a7ff7]::panic::PanicHookInfo<'b>,), Output = ()> + core[97f61b5528a4c2b4]::marker::Send + core[97f61b5528a4c2b4]::marker::Sync> as core[97f61b5528a4c2b4]::ops::function::Fn<(&std[da2fd379f16a7ff7]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/alloc/src/boxed.rs:2254:9 [INFO] [stdout] 12: 0x63601498530c - test[d0b63a2f043bab5e]::test_main_with_exit_callback::::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x636014b11e52 - core[97f61b5528a4c2b4]::ops::function::Fn<(&'a std[da2fd379f16a7ff7]::panic::PanicHookInfo<'b>,), Output = ()> + core[97f61b5528a4c2b4]::marker::Send + core[97f61b5528a4c2b4]::marker::Sync> as core[97f61b5528a4c2b4]::ops::function::Fn<(&std[da2fd379f16a7ff7]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/alloc/src/boxed.rs:2254:9 [INFO] [stdout] 14: 0x636014b11e52 - std[da2fd379f16a7ff7]::panicking::panic_with_hook [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x636014af8908 - std[da2fd379f16a7ff7]::panicking::panic_handler::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x636014af01c9 - std[da2fd379f16a7ff7]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x636014af961d - __rustc[9f3cd9eabd71303e]::rust_begin_unwind [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x636014b2ef7c - core[97f61b5528a4c2b4]::panicking::panic_fmt [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x636014b2ecf2 - core[97f61b5528a4c2b4]::result::unwrap_failed [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x63601496edf8 - >::unwrap [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x63601496edf8 - rustlings[7a98c1ece95058eb]::exercise::test::test_exercise_with_output [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:38 [INFO] [stdout] 22: 0x63601496b6f7 - rustlings[7a98c1ece95058eb]::exercise::test::test_exercise_with_output::{closure#0} [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x636014973d96 - >::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x6360149793eb - core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String> as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x6360149793eb - test[d0b63a2f043bab5e]::__rust_begin_short_backtrace::, fn() -> core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x636014985ddb - test[d0b63a2f043bab5e]::run_test_in_process::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x636014985ddb - as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x636014985ddb - std[da2fd379f16a7ff7]::panicking::catch_unwind::do_call::, core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x636014985ddb - std[da2fd379f16a7ff7]::panicking::catch_unwind::, core[97f61b5528a4c2b4]::panic::unwind_safe::AssertUnwindSafe> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x636014985ddb - std[da2fd379f16a7ff7]::panic::catch_unwind::, core[97f61b5528a4c2b4]::result::Result<(), alloc[ec929a98520ab192]::string::String>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x636014985ddb - test[d0b63a2f043bab5e]::run_test_in_process [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x636014985ddb - test[d0b63a2f043bab5e]::run_test::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x6360149814f4 - test[d0b63a2f043bab5e]::run_test::{closure#1} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x6360149814f4 - std[da2fd379f16a7ff7]::sys::backtrace::__rust_begin_short_backtrace:: [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x6360149889e2 - std[da2fd379f16a7ff7]::thread::lifecycle::spawn_unchecked::::{closure#1}::{closure#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/thread/lifecycle.rs:91:13 [INFO] [stdout] 36: 0x6360149889e2 - ::{closure#1}::{closure#0}> as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x6360149889e2 - std[da2fd379f16a7ff7]::panicking::catch_unwind::do_call::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x6360149889e2 - std[da2fd379f16a7ff7]::panicking::catch_unwind::<(), core[97f61b5528a4c2b4]::panic::unwind_safe::AssertUnwindSafe::{closure#1}::{closure#0}>> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x6360149889e2 - std[da2fd379f16a7ff7]::panic::catch_unwind::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x6360149889e2 - std[da2fd379f16a7ff7]::thread::lifecycle::spawn_unchecked::::{closure#1} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/thread/lifecycle.rs:89:26 [INFO] [stdout] 41: 0x6360149889e2 - ::{closure#1} as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x636014b1912f - + core[97f61b5528a4c2b4]::marker::Send> as core[97f61b5528a4c2b4]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/alloc/src/boxed.rs:2240:9 [INFO] [stdout] 43: 0x636014b1912f - ::new::thread_start [INFO] [stdout] at /rustc/8da20828b6ea601dfd8e2448cb50ace88876bd78/library/std/src/sys/thread/unix.rs:118:17 [INFO] [stdout] 44: 0x7b707c529aa4 - [INFO] [stdout] 45: 0x7b707c5b6a64 - 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 0.08s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "5fb0c29a99db5d1d88942ac96166ac7d62519d952067c266f959e6468f5fe871", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5fb0c29a99db5d1d88942ac96166ac7d62519d952067c266f959e6468f5fe871", kill_on_drop: false }` [INFO] [stdout] 5fb0c29a99db5d1d88942ac96166ac7d62519d952067c266f959e6468f5fe871