[INFO] cloning repository https://github.com/cicvedu/rust-rustlings-hzh9810 [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-hzh9810" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-hzh9810", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-hzh9810'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d81286040b6c01f971a9f2403145bdec2d05428b [INFO] testing cicvedu/rust-rustlings-hzh9810 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcicvedu%2Frust-rustlings-hzh9810" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/cicvedu/rust-rustlings-hzh9810 [INFO] finished tweaking git repo https://github.com/cicvedu/rust-rustlings-hzh9810 [INFO] tweaked toml for git repo https://github.com/cicvedu/rust-rustlings-hzh9810 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/cicvedu/rust-rustlings-hzh9810 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/cicvedu/rust-rustlings-hzh9810 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e133fa2ac5cc9737785257e26aca6858969af7ac1c4241c17b4bf37567b0d102 [INFO] running `Command { std: "docker" "start" "-a" "e133fa2ac5cc9737785257e26aca6858969af7ac1c4241c17b4bf37567b0d102", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e133fa2ac5cc9737785257e26aca6858969af7ac1c4241c17b4bf37567b0d102", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e133fa2ac5cc9737785257e26aca6858969af7ac1c4241c17b4bf37567b0d102", kill_on_drop: false }` [INFO] [stdout] e133fa2ac5cc9737785257e26aca6858969af7ac1c4241c17b4bf37567b0d102 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f98860fea44c6570d9274fde6e637c38ea1124ffe7385b8c6cac2955ba5ceb14 [INFO] running `Command { std: "docker" "start" "-a" "f98860fea44c6570d9274fde6e637c38ea1124ffe7385b8c6cac2955ba5ceb14", kill_on_drop: false }` [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 2.84s [INFO] running `Command { std: "docker" "inspect" "f98860fea44c6570d9274fde6e637c38ea1124ffe7385b8c6cac2955ba5ceb14", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f98860fea44c6570d9274fde6e637c38ea1124ffe7385b8c6cac2955ba5ceb14", kill_on_drop: false }` [INFO] [stdout] f98860fea44c6570d9274fde6e637c38ea1124ffe7385b8c6cac2955ba5ceb14 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 510a97bea893551fe6ac28ab99c922e89d34ad8ca3d63e3b4c1a986e2c39e956 [INFO] running `Command { std: "docker" "start" "-a" "510a97bea893551fe6ac28ab99c922e89d34ad8ca3d63e3b4c1a986e2c39e956", kill_on_drop: false }` [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 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 1.53s [INFO] running `Command { std: "docker" "inspect" "510a97bea893551fe6ac28ab99c922e89d34ad8ca3d63e3b4c1a986e2c39e956", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "510a97bea893551fe6ac28ab99c922e89d34ad8ca3d63e3b4c1a986e2c39e956", kill_on_drop: false }` [INFO] [stdout] 510a97bea893551fe6ac28ab99c922e89d34ad8ca3d63e3b4c1a986e2c39e956 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 1a6eac231cd78bb4d17ab3908c11efbdd406519123d0bf3884a4435e61de266c [INFO] running `Command { std: "docker" "start" "-a" "1a6eac231cd78bb4d17ab3908c11efbdd406519123d0bf3884a4435e61de266c", 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 0.16s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-5be997d8da16bfde) [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test exercise::test::test_finished_exercise ... ok [INFO] [stdout] test exercise::test::test_clean ... FAILED [INFO] [stdout] test exercise::test::test_pending_state ... ok [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' (17) 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: 0x5c3d0992d3aa - std[29689e6404d28ef9]::backtrace_rs::backtrace::libunwind::trace [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5c3d0992d3aa - std[29689e6404d28ef9]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5c3d0992d3aa - std[29689e6404d28ef9]::sys::backtrace::_print_fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x5c3d0992d3aa - <::print::DisplayBacktrace as core[e929cb53b82a81ca]::fmt::Display>::fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x5c3d099426ca - ::fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x5c3d099426ca - core[e929cb53b82a81ca]::fmt::write [INFO] [stdout] 6: 0x5c3d09931cb2 - std[29689e6404d28ef9]::io::default_write_fmt::> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/io/mod.rs:621:11 [INFO] [stdout] 7: 0x5c3d09931cb2 - as std[29689e6404d28ef9]::io::Write>::write_fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/io/mod.rs:1976:13 [INFO] [stdout] 8: 0x5c3d0990bfff - ::print [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x5c3d0990bfff - std[29689e6404d28ef9]::panicking::default_hook::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x5c3d09925549 - std[29689e6404d28ef9]::panicking::default_hook [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x5c3d096b6d9c - core[e929cb53b82a81ca]::ops::function::Fn<(&'a std[29689e6404d28ef9]::panic::PanicHookInfo<'b>,), Output = ()> + core[e929cb53b82a81ca]::marker::Send + core[e929cb53b82a81ca]::marker::Sync> as core[e929cb53b82a81ca]::ops::function::Fn<(&std[29689e6404d28ef9]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/alloc/src/boxed.rs:2285:9 [INFO] [stdout] 12: 0x5c3d096b6d9c - test[a24b3028667022f7]::test_main_inner::::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:155:21 [INFO] [stdout] 13: 0x5c3d09925702 - core[e929cb53b82a81ca]::ops::function::Fn<(&'a std[29689e6404d28ef9]::panic::PanicHookInfo<'b>,), Output = ()> + core[e929cb53b82a81ca]::marker::Send + core[e929cb53b82a81ca]::marker::Sync> as core[e929cb53b82a81ca]::ops::function::Fn<(&std[29689e6404d28ef9]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/alloc/src/boxed.rs:2285:9 [INFO] [stdout] 14: 0x5c3d09925702 - std[29689e6404d28ef9]::panicking::panic_with_hook [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x5c3d0990c0b8 - std[29689e6404d28ef9]::panicking::panic_handler::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x5c3d099011e9 - std[29689e6404d28ef9]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x5c3d0990cdcd - __rustc[3aed6af316653e63]::rust_begin_unwind [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x5c3d09942f0c - core[e929cb53b82a81ca]::panicking::panic_fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x5c3d09942c82 - core[e929cb53b82a81ca]::result::unwrap_failed [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x5c3d0969fdcc - >::unwrap [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x5c3d0969fdcc - rustlings[b40c1ebec0f585eb]::exercise::test::test_clean [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:303:36 [INFO] [stdout] 22: 0x5c3d0969bb47 - rustlings[b40c1ebec0f585eb]::exercise::test::test_clean::{closure#0} [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:302:20 [INFO] [stdout] 23: 0x5c3d096a3436 - >::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5c3d096aa07b - core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String> as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5c3d096aa07b - test[a24b3028667022f7]::__rust_begin_short_backtrace::, fn() -> core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:724:18 [INFO] [stdout] 26: 0x5c3d096b786b - test[a24b3028667022f7]::run_test_in_process::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:747:74 [INFO] [stdout] 27: 0x5c3d096b786b - as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/panic/unwind_safe.rs:275:9 [INFO] [stdout] 28: 0x5c3d096b786b - std[29689e6404d28ef9]::panicking::catch_unwind::do_call::, core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x5c3d096b786b - std[29689e6404d28ef9]::panicking::catch_unwind::, core[e929cb53b82a81ca]::panic::unwind_safe::AssertUnwindSafe> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x5c3d096b786b - std[29689e6404d28ef9]::panic::catch_unwind::, core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5c3d096b786b - test[a24b3028667022f7]::run_test_in_process [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:747:27 [INFO] [stdout] 32: 0x5c3d096b786b - test[a24b3028667022f7]::run_test::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:668:43 [INFO] [stdout] 33: 0x5c3d096b0f84 - test[a24b3028667022f7]::run_test::{closure#1} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:698:41 [INFO] [stdout] 34: 0x5c3d096b0f84 - std[29689e6404d28ef9]::sys::backtrace::__rust_begin_short_backtrace:: [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x5c3d096ba472 - std[29689e6404d28ef9]::thread::lifecycle::spawn_unchecked::::{closure#1}::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/thread/lifecycle.rs:70:13 [INFO] [stdout] 36: 0x5c3d096ba472 - ::{closure#1}::{closure#0}> as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/panic/unwind_safe.rs:275:9 [INFO] [stdout] 37: 0x5c3d096ba472 - std[29689e6404d28ef9]::panicking::catch_unwind::do_call::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x5c3d096ba472 - std[29689e6404d28ef9]::panicking::catch_unwind::<(), core[e929cb53b82a81ca]::panic::unwind_safe::AssertUnwindSafe::{closure#1}::{closure#0}>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x5c3d096ba472 - std[29689e6404d28ef9]::panic::catch_unwind::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5c3d096ba472 - std[29689e6404d28ef9]::thread::lifecycle::spawn_unchecked::::{closure#1} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/thread/lifecycle.rs:68:26 [INFO] [stdout] 41: 0x5c3d096ba472 - ::{closure#1} as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5c3d0992caef - + core[e929cb53b82a81ca]::marker::Send> as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/alloc/src/boxed.rs:2271:9 [INFO] [stdout] 43: 0x5c3d0992caef - ::new::thread_start [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/thread/unix.rs:118:17 [INFO] [stdout] 44: 0x78ce0a311aa4 - [INFO] [stdout] 45: 0x78ce0a39ea64 - 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' (18) 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/./rmetayNDDk6\"\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: 0x5c3d0992d3aa - std[29689e6404d28ef9]::backtrace_rs::backtrace::libunwind::trace [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5c3d0992d3aa - std[29689e6404d28ef9]::backtrace_rs::backtrace::trace_unsynchronized:: [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5c3d0992d3aa - std[29689e6404d28ef9]::sys::backtrace::_print_fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:74:9 [INFO] [stdout] 3: 0x5c3d0992d3aa - <::print::DisplayBacktrace as core[e929cb53b82a81ca]::fmt::Display>::fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:44:26 [INFO] [stdout] 4: 0x5c3d099426ca - ::fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/fmt/rt.rs:152:76 [INFO] [stdout] 5: 0x5c3d099426ca - core[e929cb53b82a81ca]::fmt::write [INFO] [stdout] 6: 0x5c3d09931cb2 - std[29689e6404d28ef9]::io::default_write_fmt::> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/io/mod.rs:621:11 [INFO] [stdout] 7: 0x5c3d09931cb2 - as std[29689e6404d28ef9]::io::Write>::write_fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/io/mod.rs:1976:13 [INFO] [stdout] 8: 0x5c3d0990bfff - ::print [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:47:9 [INFO] [stdout] 9: 0x5c3d0990bfff - std[29689e6404d28ef9]::panicking::default_hook::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:292:27 [INFO] [stdout] 10: 0x5c3d09925549 - std[29689e6404d28ef9]::panicking::default_hook [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:316:9 [INFO] [stdout] 11: 0x5c3d096b6d9c - core[e929cb53b82a81ca]::ops::function::Fn<(&'a std[29689e6404d28ef9]::panic::PanicHookInfo<'b>,), Output = ()> + core[e929cb53b82a81ca]::marker::Send + core[e929cb53b82a81ca]::marker::Sync> as core[e929cb53b82a81ca]::ops::function::Fn<(&std[29689e6404d28ef9]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/alloc/src/boxed.rs:2285:9 [INFO] [stdout] 12: 0x5c3d096b6d9c - test[a24b3028667022f7]::test_main_inner::::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:155:21 [INFO] [stdout] 13: 0x5c3d09925702 - core[e929cb53b82a81ca]::ops::function::Fn<(&'a std[29689e6404d28ef9]::panic::PanicHookInfo<'b>,), Output = ()> + core[e929cb53b82a81ca]::marker::Send + core[e929cb53b82a81ca]::marker::Sync> as core[e929cb53b82a81ca]::ops::function::Fn<(&std[29689e6404d28ef9]::panic::PanicHookInfo,)>>::call [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/alloc/src/boxed.rs:2285:9 [INFO] [stdout] 14: 0x5c3d09925702 - std[29689e6404d28ef9]::panicking::panic_with_hook [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:833:13 [INFO] [stdout] 15: 0x5c3d0990c0b8 - std[29689e6404d28ef9]::panicking::panic_handler::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:698:13 [INFO] [stdout] 16: 0x5c3d099011e9 - std[29689e6404d28ef9]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:182:18 [INFO] [stdout] 17: 0x5c3d0990cdcd - __rustc[3aed6af316653e63]::rust_begin_unwind [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:689:5 [INFO] [stdout] 18: 0x5c3d09942f0c - core[e929cb53b82a81ca]::panicking::panic_fmt [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x5c3d09942c82 - core[e929cb53b82a81ca]::result::unwrap_failed [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/result.rs:1867:5 [INFO] [stdout] 20: 0x5c3d096a0bc8 - >::unwrap [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x5c3d096a0bc8 - rustlings[b40c1ebec0f585eb]::exercise::test::test_exercise_with_output [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:376:38 [INFO] [stdout] 22: 0x5c3d0969bbd7 - rustlings[b40c1ebec0f585eb]::exercise::test::test_exercise_with_output::{closure#0} [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:369:35 [INFO] [stdout] 23: 0x5c3d096a34f6 - >::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5c3d096aa07b - core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String> as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5c3d096aa07b - test[a24b3028667022f7]::__rust_begin_short_backtrace::, fn() -> core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:724:18 [INFO] [stdout] 26: 0x5c3d096b786b - test[a24b3028667022f7]::run_test_in_process::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:747:74 [INFO] [stdout] 27: 0x5c3d096b786b - as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/panic/unwind_safe.rs:275:9 [INFO] [stdout] 28: 0x5c3d096b786b - std[29689e6404d28ef9]::panicking::catch_unwind::do_call::, core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:581:40 [INFO] [stdout] 29: 0x5c3d096b786b - std[29689e6404d28ef9]::panicking::catch_unwind::, core[e929cb53b82a81ca]::panic::unwind_safe::AssertUnwindSafe> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:544:19 [INFO] [stdout] 30: 0x5c3d096b786b - std[29689e6404d28ef9]::panic::catch_unwind::, core[e929cb53b82a81ca]::result::Result<(), alloc[9d7caffeb3b5d2c6]::string::String>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5c3d096b786b - test[a24b3028667022f7]::run_test_in_process [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:747:27 [INFO] [stdout] 32: 0x5c3d096b786b - test[a24b3028667022f7]::run_test::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:668:43 [INFO] [stdout] 33: 0x5c3d096b0f84 - test[a24b3028667022f7]::run_test::{closure#1} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/test/src/lib.rs:698:41 [INFO] [stdout] 34: 0x5c3d096b0f84 - std[29689e6404d28ef9]::sys::backtrace::__rust_begin_short_backtrace:: [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/backtrace.rs:166:18 [INFO] [stdout] 35: 0x5c3d096ba472 - std[29689e6404d28ef9]::thread::lifecycle::spawn_unchecked::::{closure#1}::{closure#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/thread/lifecycle.rs:70:13 [INFO] [stdout] 36: 0x5c3d096ba472 - ::{closure#1}::{closure#0}> as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/panic/unwind_safe.rs:275:9 [INFO] [stdout] 37: 0x5c3d096ba472 - std[29689e6404d28ef9]::panicking::catch_unwind::do_call::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:581:40 [INFO] [stdout] 38: 0x5c3d096ba472 - std[29689e6404d28ef9]::panicking::catch_unwind::<(), core[e929cb53b82a81ca]::panic::unwind_safe::AssertUnwindSafe::{closure#1}::{closure#0}>> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panicking.rs:544:19 [INFO] [stdout] 39: 0x5c3d096ba472 - std[29689e6404d28ef9]::panic::catch_unwind::::{closure#1}::{closure#0}>, ()> [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5c3d096ba472 - std[29689e6404d28ef9]::thread::lifecycle::spawn_unchecked::::{closure#1} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/thread/lifecycle.rs:68:26 [INFO] [stdout] 41: 0x5c3d096ba472 - ::{closure#1} as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5c3d0992caef - + core[e929cb53b82a81ca]::marker::Send> as core[e929cb53b82a81ca]::ops::function::FnOnce<()>>::call_once [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/alloc/src/boxed.rs:2271:9 [INFO] [stdout] 43: 0x5c3d0992caef - ::new::thread_start [INFO] [stdout] at /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/std/src/sys/thread/unix.rs:118:17 [INFO] [stdout] 44: 0x78ce0a311aa4 - [INFO] [stdout] 45: 0x78ce0a39ea64 - 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 0.16s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "1a6eac231cd78bb4d17ab3908c11efbdd406519123d0bf3884a4435e61de266c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a6eac231cd78bb4d17ab3908c11efbdd406519123d0bf3884a4435e61de266c", kill_on_drop: false }` [INFO] [stdout] 1a6eac231cd78bb4d17ab3908c11efbdd406519123d0bf3884a4435e61de266c