[INFO] cloning repository https://github.com/cicvedu/rust-rustlings-wty4427300 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cicvedu/rust-rustlings-wty4427300" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-wty4427300", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-wty4427300'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5bc68a713e9d01c64702a3e68d80593df8e73148 [INFO] testing cicvedu/rust-rustlings-wty4427300 against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-wty4427300" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/cicvedu/rust-rustlings-wty4427300 [INFO] finished tweaking git repo https://github.com/cicvedu/rust-rustlings-wty4427300 [INFO] tweaked toml for git repo https://github.com/cicvedu/rust-rustlings-wty4427300 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/cicvedu/rust-rustlings-wty4427300 on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/cicvedu/rust-rustlings-wty4427300 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 830ba9fa1f82b46d2035a6a033d7d7f86cd6f316b700c4b7e25c6fccebebb253 [INFO] running `Command { std: "docker" "start" "-a" "830ba9fa1f82b46d2035a6a033d7d7f86cd6f316b700c4b7e25c6fccebebb253", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "830ba9fa1f82b46d2035a6a033d7d7f86cd6f316b700c4b7e25c6fccebebb253", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "830ba9fa1f82b46d2035a6a033d7d7f86cd6f316b700c4b7e25c6fccebebb253", kill_on_drop: false }` [INFO] [stdout] 830ba9fa1f82b46d2035a6a033d7d7f86cd6f316b700c4b7e25c6fccebebb253 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }` [INFO] [stdout] d84bec191e1ea49b6eafbbb6d58293d0c7c3604352a2875c97cd8e1a2b9ab79b [INFO] running `Command { std: "docker" "start" "-a" "d84bec191e1ea49b6eafbbb6d58293d0c7c3604352a2875c97cd8e1a2b9ab79b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.64 [INFO] [stderr] Compiling unicode-ident v1.0.10 [INFO] [stderr] Compiling quote v1.0.29 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling serde v1.0.171 [INFO] [stderr] Compiling log v0.4.19 [INFO] [stderr] Compiling tokio v1.29.1 [INFO] [stderr] Compiling argh_shared v0.1.10 [INFO] [stderr] Compiling serde_json v1.0.102 [INFO] [stderr] Compiling aho-corasick v1.0.2 [INFO] [stderr] Compiling filetime v0.2.21 [INFO] [stderr] Compiling ryu v1.0.14 [INFO] [stderr] Compiling pin-project-lite v0.2.10 [INFO] [stderr] Compiling itoa v1.0.8 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex-automata v0.3.3 [INFO] [stderr] Compiling syn v2.0.25 [INFO] [stderr] Compiling regex v1.9.1 [INFO] [stderr] Compiling argh_derive v0.1.10 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling argh v0.1.10 [INFO] [stderr] Compiling serde_derive v1.0.171 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Compiling toml v0.5.11 [INFO] [stderr] Compiling rustlings v5.5.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:113:20 [INFO] [stdout] | [INFO] [stdout] 113 | 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] 113 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.38s [INFO] running `Command { std: "docker" "inspect" "d84bec191e1ea49b6eafbbb6d58293d0c7c3604352a2875c97cd8e1a2b9ab79b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d84bec191e1ea49b6eafbbb6d58293d0c7c3604352a2875c97cd8e1a2b9ab79b", kill_on_drop: false }` [INFO] [stdout] d84bec191e1ea49b6eafbbb6d58293d0c7c3604352a2875c97cd8e1a2b9ab79b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }` [INFO] [stdout] 5bc100738b238231b9d644e7dc34db03ddc98d8937498dcbe1834f6643580f3f [INFO] running `Command { std: "docker" "start" "-a" "5bc100738b238231b9d644e7dc34db03ddc98d8937498dcbe1834f6643580f3f", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:113:20 [INFO] [stdout] | [INFO] [stdout] 113 | 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] 113 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling escargot v0.4.0 [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 v5.5.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:113:20 [INFO] [stdout] | [INFO] [stdout] 113 | 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] 113 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 2.56s [INFO] running `Command { std: "docker" "inspect" "5bc100738b238231b9d644e7dc34db03ddc98d8937498dcbe1834f6643580f3f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5bc100738b238231b9d644e7dc34db03ddc98d8937498dcbe1834f6643580f3f", kill_on_drop: false }` [INFO] [stdout] 5bc100738b238231b9d644e7dc34db03ddc98d8937498dcbe1834f6643580f3f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }` [INFO] [stdout] 9abbe69dc5a068a1cdafe895ddc9a7323304ff133322bc62854ab0001d38aacf [INFO] running `Command { std: "docker" "start" "-a" "9abbe69dc5a068a1cdafe895ddc9a7323304ff133322bc62854ab0001d38aacf", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/exercise.rs:113:20 [INFO] [stderr] | [INFO] [stderr] 113 | 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] 113 | 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/build/rustlings/ddf62adac1d73eef/deps/rustlings-ddf62adac1d73eef) [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' (25) panicked at src/exercise.rs:303:36: [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: 0x58b0bd8dd0a2 - std[840933623431fd06]::backtrace_rs::backtrace::libunwind::trace [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x58b0bd8dd0a2 - std[840933623431fd06]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x58b0bd8dd0a2 - std[840933623431fd06]::sys::backtrace::_print_fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x58b0bd8dd0a2 - <::print::DisplayBacktrace as core[8f93d80df273fe75]::fmt::Display>::fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x58b0bd8f2dfa - ::fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x58b0bd8f2dfa - core[8f93d80df273fe75]::fmt::write [INFO] [stdout] 6: 0x58b0bd8e1fa6 - std[840933623431fd06]::io::default_write_fmt::> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x58b0bd8e1fa6 - as std[840933623431fd06]::io::Write>::write_fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:1994:13 [INFO] [stdout] 8: 0x58b0bd8bb1ef - ::print [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x58b0bd8bb1ef - std[840933623431fd06]::panicking::default_hook::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x58b0bd8d5149 - std[840933623431fd06]::panicking::default_hook [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x58b0bd666bae - core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 12: 0x58b0bd666bae - test[2f1252070343a163]::test_main_with_exit_callback::::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x58b0bd8d5302 - core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 14: 0x58b0bd8d5302 - std[840933623431fd06]::panicking::panic_with_hook [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x58b0bd8bb2a8 - std[840933623431fd06]::panicking::panic_handler::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x58b0bd8b2b99 - std[840933623431fd06]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x58b0bd8bc0fd - __rustc[5b4a0c6d8cc4a177]::rust_begin_unwind [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x58b0bd8f35bc - core[8f93d80df273fe75]::panicking::panic_fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x58b0bd8f3332 - core[8f93d80df273fe75]::result::unwrap_failed [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x58b0bd64dcac - >::unwrap [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x58b0bd64dcac - rustlings[4b9be06a0266966f]::exercise::test::test_clean [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:303:36 [INFO] [stdout] 22: 0x58b0bd64a797 - rustlings[4b9be06a0266966f]::exercise::test::test_clean::{closure#0} [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:302:20 [INFO] [stdout] 23: 0x58b0bd64fef6 - >::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x58b0bd65af5b - core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x58b0bd65af5b - test[2f1252070343a163]::__rust_begin_short_backtrace::, fn() -> core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x58b0bd6677ba - test[2f1252070343a163]::run_test_in_process::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x58b0bd6677ba - as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x58b0bd6677ba - std[840933623431fd06]::panicking::catch_unwind::do_call::, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x58b0bd6677ba - std[840933623431fd06]::panicking::catch_unwind::, core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x58b0bd6677ba - std[840933623431fd06]::panic::catch_unwind::, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x58b0bd6677ba - test[2f1252070343a163]::run_test_in_process [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x58b0bd6677ba - test[2f1252070343a163]::run_test::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x58b0bd661c84 - test[2f1252070343a163]::run_test::{closure#1} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x58b0bd661c84 - std[840933623431fd06]::sys::backtrace::__rust_begin_short_backtrace:: [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x58b0bd66a2b2 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::::{closure#1}::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:91:13 [INFO] [stdout] 36: 0x58b0bd66a2b2 - ::{closure#1}::{closure#0}> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x58b0bd66a2b2 - std[840933623431fd06]::panicking::catch_unwind::do_call::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x58b0bd66a2b2 - std[840933623431fd06]::panicking::catch_unwind::<(), core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe::{closure#1}::{closure#0}>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x58b0bd66a2b2 - std[840933623431fd06]::panic::catch_unwind::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x58b0bd66a2b2 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::::{closure#1} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:89:26 [INFO] [stdout] 41: 0x58b0bd66a2b2 - ::{closure#1} as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x58b0bd8dc7af - + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2206:9 [INFO] [stdout] 43: 0x58b0bd8dc7af - ::new::thread_start [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/thread/unix.rs:119:17 [INFO] [stdout] 44: 0x7386fd549aa4 - [INFO] [stdout] 45: 0x7386fd5d6a64 - 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:376:38: [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/./rmetaO35aSz\"\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: 0x58b0bd8dd0a2 - std[840933623431fd06]::backtrace_rs::backtrace::libunwind::trace [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x58b0bd8dd0a2 - std[840933623431fd06]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x58b0bd8dd0a2 - std[840933623431fd06]::sys::backtrace::_print_fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x58b0bd8dd0a2 - <::print::DisplayBacktrace as core[8f93d80df273fe75]::fmt::Display>::fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x58b0bd8f2dfa - ::fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x58b0bd8f2dfa - core[8f93d80df273fe75]::fmt::write [INFO] [stdout] 6: 0x58b0bd8e1fa6 - std[840933623431fd06]::io::default_write_fmt::> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x58b0bd8e1fa6 - as std[840933623431fd06]::io::Write>::write_fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/io/mod.rs:1994:13 [INFO] [stdout] 8: 0x58b0bd8bb1ef - ::print [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x58b0bd8bb1ef - std[840933623431fd06]::panicking::default_hook::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x58b0bd8d5149 - std[840933623431fd06]::panicking::default_hook [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x58b0bd666bae - core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 12: 0x58b0bd666bae - test[2f1252070343a163]::test_main_with_exit_callback::::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x58b0bd8d5302 - core[8f93d80df273fe75]::ops::function::Fn<(&'a std[840933623431fd06]::panic::PanicHookInfo<'b>,), Output = ()> + core[8f93d80df273fe75]::marker::Sync + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::Fn<(&std[840933623431fd06]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2220:9 [INFO] [stdout] 14: 0x58b0bd8d5302 - std[840933623431fd06]::panicking::panic_with_hook [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x58b0bd8bb2a8 - std[840933623431fd06]::panicking::panic_handler::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x58b0bd8b2b99 - std[840933623431fd06]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x58b0bd8bc0fd - __rustc[5b4a0c6d8cc4a177]::rust_begin_unwind [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x58b0bd8f35bc - core[8f93d80df273fe75]::panicking::panic_fmt [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x58b0bd8f3332 - core[8f93d80df273fe75]::result::unwrap_failed [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x58b0bd64ea48 - >::unwrap [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x58b0bd64ea48 - rustlings[4b9be06a0266966f]::exercise::test::test_exercise_with_output [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:376:38 [INFO] [stdout] 22: 0x58b0bd64a827 - rustlings[4b9be06a0266966f]::exercise::test::test_exercise_with_output::{closure#0} [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:369:35 [INFO] [stdout] 23: 0x58b0bd64ffb6 - >::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x58b0bd65af5b - core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x58b0bd65af5b - test[2f1252070343a163]::__rust_begin_short_backtrace::, fn() -> core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x58b0bd6677ba - test[2f1252070343a163]::run_test_in_process::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x58b0bd6677ba - as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x58b0bd6677ba - std[840933623431fd06]::panicking::catch_unwind::do_call::, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x58b0bd6677ba - std[840933623431fd06]::panicking::catch_unwind::, core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x58b0bd6677ba - std[840933623431fd06]::panic::catch_unwind::, core[8f93d80df273fe75]::result::Result<(), alloc[40b2bae28975ac47]::string::String>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x58b0bd6677ba - test[2f1252070343a163]::run_test_in_process [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x58b0bd6677ba - test[2f1252070343a163]::run_test::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x58b0bd661c84 - test[2f1252070343a163]::run_test::{closure#1} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x58b0bd661c84 - std[840933623431fd06]::sys::backtrace::__rust_begin_short_backtrace:: [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x58b0bd66a2b2 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::::{closure#1}::{closure#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:91:13 [INFO] [stdout] 36: 0x58b0bd66a2b2 - ::{closure#1}::{closure#0}> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x58b0bd66a2b2 - std[840933623431fd06]::panicking::catch_unwind::do_call::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x58b0bd66a2b2 - std[840933623431fd06]::panicking::catch_unwind::<(), core[8f93d80df273fe75]::panic::unwind_safe::AssertUnwindSafe::{closure#1}::{closure#0}>> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x58b0bd66a2b2 - std[840933623431fd06]::panic::catch_unwind::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x58b0bd66a2b2 - std[840933623431fd06]::thread::lifecycle::spawn_unchecked::::{closure#1} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/thread/lifecycle.rs:89:26 [INFO] [stdout] 41: 0x58b0bd66a2b2 - ::{closure#1} as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x58b0bd8dc7af - + core[8f93d80df273fe75]::marker::Send> as core[8f93d80df273fe75]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/alloc/src/boxed.rs:2206:9 [INFO] [stdout] 43: 0x58b0bd8dc7af - ::new::thread_start [INFO] [stdout] at /rustc/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/library/std/src/sys/thread/unix.rs:119:17 [INFO] [stdout] 44: 0x7386fd549aa4 - [INFO] [stdout] 45: 0x7386fd5d6a64 - 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 0.04s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "9abbe69dc5a068a1cdafe895ddc9a7323304ff133322bc62854ab0001d38aacf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9abbe69dc5a068a1cdafe895ddc9a7323304ff133322bc62854ab0001d38aacf", kill_on_drop: false }` [INFO] [stdout] 9abbe69dc5a068a1cdafe895ddc9a7323304ff133322bc62854ab0001d38aacf