[INFO] cloning repository https://github.com/vishal1132/rustlings-solutions [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vishal1132/rustlings-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishal1132%2Frustlings-solutions", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishal1132%2Frustlings-solutions'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f02f0de9eba490614f87a4fe8471dff0ca38e590 [INFO] testing vishal1132/rustlings-solutions against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishal1132%2Frustlings-solutions" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/vishal1132/rustlings-solutions [INFO] finished tweaking git repo https://github.com/vishal1132/rustlings-solutions [INFO] tweaked toml for git repo https://github.com/vishal1132/rustlings-solutions written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/vishal1132/rustlings-solutions on toolchain 9f93af291970322f4f1c6315ccde4d7078201159 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/vishal1132/rustlings-solutions 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded predicates-tree v1.0.3 [INFO] [stderr] Downloaded indicatif v0.16.2 [INFO] [stderr] Downloaded argh_shared v0.1.5 [INFO] [stderr] Downloaded argh v0.1.5 [INFO] [stderr] Downloaded assert_cmd v0.11.1 [INFO] [stderr] Downloaded home v0.5.3 [INFO] [stderr] Downloaded console v0.15.0 [INFO] [stderr] Downloaded serde v1.0.129 [INFO] [stderr] Downloaded argh_derive v0.1.5 [INFO] [stderr] Downloaded serde_derive v1.0.129 [INFO] [stderr] Downloaded escargot v0.4.0 [INFO] [stderr] Downloaded syn v1.0.75 [INFO] [stderr] Downloaded libc v0.2.100 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8b0ec1fb17b17a6007b748b45bff3cf566eb73cad49b393e9a703f7979bbd371 [INFO] running `Command { std: "docker" "start" "-a" "8b0ec1fb17b17a6007b748b45bff3cf566eb73cad49b393e9a703f7979bbd371", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8b0ec1fb17b17a6007b748b45bff3cf566eb73cad49b393e9a703f7979bbd371", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8b0ec1fb17b17a6007b748b45bff3cf566eb73cad49b393e9a703f7979bbd371", kill_on_drop: false }` [INFO] [stdout] 8b0ec1fb17b17a6007b748b45bff3cf566eb73cad49b393e9a703f7979bbd371 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c80edf0e956cd9e3491c705e61198a0ee019f01e186d6a4791e9bef7562a4d59 [INFO] running `Command { std: "docker" "start" "-a" "c80edf0e956cd9e3491c705e61198a0ee019f01e186d6a4791e9bef7562a4d59", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [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 v5.0.0 (/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 15.60s [INFO] running `Command { std: "docker" "inspect" "c80edf0e956cd9e3491c705e61198a0ee019f01e186d6a4791e9bef7562a4d59", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c80edf0e956cd9e3491c705e61198a0ee019f01e186d6a4791e9bef7562a4d59", kill_on_drop: false }` [INFO] [stdout] c80edf0e956cd9e3491c705e61198a0ee019f01e186d6a4791e9bef7562a4d59 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 19287e1494fceab9bacc2317b177d636a5728ce6f3597c305d23b48cd6259eaf [INFO] running `Command { std: "docker" "start" "-a" "19287e1494fceab9bacc2317b177d636a5728ce6f3597c305d23b48cd6259eaf", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [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 v5.0.0 (/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 4.79s [INFO] running `Command { std: "docker" "inspect" "19287e1494fceab9bacc2317b177d636a5728ce6f3597c305d23b48cd6259eaf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "19287e1494fceab9bacc2317b177d636a5728ce6f3597c305d23b48cd6259eaf", kill_on_drop: false }` [INFO] [stdout] 19287e1494fceab9bacc2317b177d636a5728ce6f3597c305d23b48cd6259eaf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 886a493a009287be4a601a7523ab2b6090f7ee8478ca23694d0a27cb47cfb585 [INFO] running `Command { std: "docker" "start" "-a" "886a493a009287be4a601a7523ab2b6090f7ee8478ca23694d0a27cb47cfb585", 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" test) generated 1 warning (run `cargo fix --bin "rustlings" -p rustlings --tests` to apply 1 suggestion) [INFO] [stderr] warning: `rustlings` (bin "rustlings") generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-9f377cc107e7958f) [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: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: 0x593ff762e242 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x593ff762e242 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x593ff762e242 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x593ff762e242 - ::fmt::h8be9aa933f14675f [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x593ff763ec7f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x593ff763ec7f - core::fmt::write::hfd0efbb002ac7eea [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25 [INFO] [stdout] 6: 0x593ff75fb923 - std::io::default_write_fmt::hd6d24501f2d7f8d3 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x593ff75fb923 - std::io::Write::write_fmt::h79eca2f72fc24111 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x593ff7607902 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x593ff760c48f - std::panicking::default_hook::{{closure}}::h8873121c56335b01 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x593ff760c321 - std::panicking::default_hook::hbafefc2d196267a2 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x593ff749f17e - as core::ops::function::Fn>::call::ha834d5846f91b30b [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9 [INFO] [stdout] 12: 0x593ff749f17e - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x593ff760ca9f - as core::ops::function::Fn>::call::hbf9b0f7a281291fd [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9 [INFO] [stdout] 14: 0x593ff760ca9f - std::panicking::panic_with_hook::h9f5b09d5adc1a745 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x593ff760c8fa - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x593ff7607a39 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x593ff75eff5d - __rustc[b292c645e8102103]::rust_begin_unwind [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x593ff7646fc0 - core::panicking::panic_fmt::h31cc490ecc8cc1fa [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x593ff76463c6 - core::result::unwrap_failed::he05762ef9e6bdf9c [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/result.rs:1862:5 [INFO] [stdout] 20: 0x593ff74774ec - core::result::Result::unwrap::hbf3494c24554767c [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x593ff74774ec - rustlings::exercise::test::test_clean::ha9b2595614be5a94 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:36 [INFO] [stdout] 22: 0x593ff74778c7 - rustlings::exercise::test::test_clean::{{closure}}::h7677a24b7d388739 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x593ff746f846 - core::ops::function::FnOnce::call_once::h679a2f5a40669056 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x593ff749ef7b - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x593ff749ef7b - test::__rust_begin_short_backtrace::he551dd004770be01 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x593ff74b2fdd - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x593ff74b2fdd - as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x593ff74b2fdd - std::panicking::catch_unwind::do_call::hc37c563b8a006285 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x593ff74b2fdd - std::panicking::catch_unwind::h616b6e2e7a27f612 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x593ff74b2fdd - std::panic::catch_unwind::h1e788dd57758e6d8 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x593ff74b2fdd - test::run_test_in_process::hf073c2764f29f8ad [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x593ff74b2fdd - test::run_test::{{closure}}::h3dc46b7a0c340fa6 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x593ff748c524 - test::run_test::{{closure}}::h6a4da3c57ef4505f [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x593ff748c524 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x593ff748fd7a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17 [INFO] [stdout] 36: 0x593ff748fd7a - as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x593ff748fd7a - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x593ff748fd7a - std::panicking::catch_unwind::h8f9f675f3756eab1 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x593ff748fd7a - std::panic::catch_unwind::he8f74a93abeceb9b [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x593ff748fd7a - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30 [INFO] [stdout] 41: 0x593ff748fd7a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x593ff7602d5f - as core::ops::function::FnOnce>::call_once::h6ff05134d80ef20e [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9 [INFO] [stdout] 43: 0x593ff7602d5f - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17 [INFO] [stdout] 44: 0x731f4a57daa4 - [INFO] [stdout] 45: 0x731f4a60aa64 - 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: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/./rmetaiS339E\"\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: 0x593ff762e242 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x593ff762e242 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x593ff762e242 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x593ff762e242 - ::fmt::h8be9aa933f14675f [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x593ff763ec7f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x593ff763ec7f - core::fmt::write::hfd0efbb002ac7eea [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25 [INFO] [stdout] 6: 0x593ff75fb923 - std::io::default_write_fmt::hd6d24501f2d7f8d3 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x593ff75fb923 - std::io::Write::write_fmt::h79eca2f72fc24111 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x593ff7607902 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x593ff760c48f - std::panicking::default_hook::{{closure}}::h8873121c56335b01 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x593ff760c321 - std::panicking::default_hook::hbafefc2d196267a2 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x593ff749f17e - as core::ops::function::Fn>::call::ha834d5846f91b30b [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9 [INFO] [stdout] 12: 0x593ff749f17e - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x593ff760ca9f - as core::ops::function::Fn>::call::hbf9b0f7a281291fd [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9 [INFO] [stdout] 14: 0x593ff760ca9f - std::panicking::panic_with_hook::h9f5b09d5adc1a745 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x593ff760c8fa - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x593ff7607a39 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x593ff75eff5d - __rustc[b292c645e8102103]::rust_begin_unwind [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x593ff7646fc0 - core::panicking::panic_fmt::h31cc490ecc8cc1fa [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14 [INFO] [stdout] 19: 0x593ff76463c6 - core::result::unwrap_failed::he05762ef9e6bdf9c [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/result.rs:1862:5 [INFO] [stdout] 20: 0x593ff7478338 - core::result::Result::unwrap::h002d7c0f85d67f29 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/result.rs:1233:23 [INFO] [stdout] 21: 0x593ff7478338 - rustlings::exercise::test::test_exercise_with_output::hff822a35df3cb020 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:38 [INFO] [stdout] 22: 0x593ff74785b7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hc84e10e6ada23d78 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x593ff746f7b6 - core::ops::function::FnOnce::call_once::h3b404158c621d1fb [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x593ff749ef7b - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x593ff749ef7b - test::__rust_begin_short_backtrace::he551dd004770be01 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x593ff74b2fdd - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x593ff74b2fdd - as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x593ff74b2fdd - std::panicking::catch_unwind::do_call::hc37c563b8a006285 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x593ff74b2fdd - std::panicking::catch_unwind::h616b6e2e7a27f612 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x593ff74b2fdd - std::panic::catch_unwind::h1e788dd57758e6d8 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x593ff74b2fdd - test::run_test_in_process::hf073c2764f29f8ad [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x593ff74b2fdd - test::run_test::{{closure}}::h3dc46b7a0c340fa6 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x593ff748c524 - test::run_test::{{closure}}::h6a4da3c57ef4505f [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x593ff748c524 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x593ff748fd7a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17 [INFO] [stdout] 36: 0x593ff748fd7a - as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x593ff748fd7a - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x593ff748fd7a - std::panicking::catch_unwind::h8f9f675f3756eab1 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x593ff748fd7a - std::panic::catch_unwind::he8f74a93abeceb9b [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x593ff748fd7a - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30 [INFO] [stdout] 41: 0x593ff748fd7a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x593ff7602d5f - as core::ops::function::FnOnce>::call_once::h6ff05134d80ef20e [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9 [INFO] [stdout] 43: 0x593ff7602d5f - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0 [INFO] [stdout] at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17 [INFO] [stdout] 44: 0x731f4a57daa4 - [INFO] [stdout] 45: 0x731f4a60aa64 - 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 0.13s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "886a493a009287be4a601a7523ab2b6090f7ee8478ca23694d0a27cb47cfb585", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "886a493a009287be4a601a7523ab2b6090f7ee8478ca23694d0a27cb47cfb585", kill_on_drop: false }` [INFO] [stdout] 886a493a009287be4a601a7523ab2b6090f7ee8478ca23694d0a27cb47cfb585