[INFO] cloning repository https://github.com/krishnakumarg1984/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krishnakumarg1984/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrishnakumarg1984%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrishnakumarg1984%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a08f98b90153a442f754664919e00687eda27aa5 [INFO] testing krishnakumarg1984/rustlings against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759-retry [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrishnakumarg1984%2Frustlings" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/krishnakumarg1984/rustlings [INFO] finished tweaking git repo https://github.com/krishnakumarg1984/rustlings [INFO] tweaked toml for git repo https://github.com/krishnakumarg1984/rustlings written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/krishnakumarg1984/rustlings on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/krishnakumarg1984/rustlings already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded normalize-line-endings v0.3.0 [INFO] [stderr] Downloaded predicates-core v1.0.2 [INFO] [stderr] Downloaded float-cmp v0.8.0 [INFO] [stderr] Downloaded itoa v1.0.2 [INFO] [stderr] Downloaded predicates v1.0.8 [INFO] [stderr] Downloaded predicates-tree v1.0.3 [INFO] [stderr] Downloaded argh_shared v0.1.5 [INFO] [stderr] Downloaded fsevent v0.4.0 [INFO] [stderr] Downloaded argh_derive v0.1.5 [INFO] [stderr] Downloaded argh v0.1.5 [INFO] [stderr] Downloaded serde_derive v1.0.129 [INFO] [stderr] Downloaded inotify v0.7.1 [INFO] [stderr] Downloaded notify v4.0.17 [INFO] [stderr] Downloaded serde_json v1.0.81 [INFO] [stderr] Downloaded serde v1.0.129 [INFO] [stderr] Downloaded escargot v0.4.0 [INFO] [stderr] Downloaded assert_cmd v0.11.1 [INFO] [stderr] Downloaded home v0.5.3 [INFO] [stderr] Downloaded fsevent-sys v2.0.1 [INFO] [stderr] Downloaded proc-macro2 v1.0.28 [INFO] [stderr] Downloaded libc v0.2.100 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9d351287a9df8848e2f846b139f730925d897c492b1329faed0223f765a126dd [INFO] running `Command { std: "docker" "start" "-a" "9d351287a9df8848e2f846b139f730925d897c492b1329faed0223f765a126dd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9d351287a9df8848e2f846b139f730925d897c492b1329faed0223f765a126dd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d351287a9df8848e2f846b139f730925d897c492b1329faed0223f765a126dd", kill_on_drop: false }` [INFO] [stdout] 9d351287a9df8848e2f846b139f730925d897c492b1329faed0223f765a126dd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 55ccb55886b4f5e569629d52bf1edcb18c6a67459ac9488b4b83d65163e22c32 [INFO] running `Command { std: "docker" "start" "-a" "55ccb55886b4f5e569629d52bf1edcb18c6a67459ac9488b4b83d65163e22c32", 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 serde_json v1.0.81 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling inotify v0.7.1 [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 v5.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for 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 46.76s [INFO] running `Command { std: "docker" "inspect" "55ccb55886b4f5e569629d52bf1edcb18c6a67459ac9488b4b83d65163e22c32", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "55ccb55886b4f5e569629d52bf1edcb18c6a67459ac9488b4b83d65163e22c32", kill_on_drop: false }` [INFO] [stdout] 55ccb55886b4f5e569629d52bf1edcb18c6a67459ac9488b4b83d65163e22c32 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7c43f6946e699cb25460097fc81c1bdd63119971e5c54c81944af886507fd16e [INFO] running `Command { std: "docker" "start" "-a" "7c43f6946e699cb25460097fc81c1bdd63119971e5c54c81944af886507fd16e", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v5.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for 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 10.33s [INFO] running `Command { std: "docker" "inspect" "7c43f6946e699cb25460097fc81c1bdd63119971e5c54c81944af886507fd16e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7c43f6946e699cb25460097fc81c1bdd63119971e5c54c81944af886507fd16e", kill_on_drop: false }` [INFO] [stdout] 7c43f6946e699cb25460097fc81c1bdd63119971e5c54c81944af886507fd16e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7a97e62c9f5a63f2d494e576a334cf5e5f3a38d5952960bbfdad462726e7788e [INFO] running `Command { std: "docker" "start" "-a" "7a97e62c9f5a63f2d494e576a334cf5e5f3a38d5952960bbfdad462726e7788e", kill_on_drop: false }` [INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stderr] --> src/exercise.rs:109:20 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn compile(&self) -> Result { [INFO] [stderr] | ^^^^^ ---------------- the lifetime gets resolved as `'_` [INFO] [stderr] | | [INFO] [stderr] | this lifetime flows to the output [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stderr] | [INFO] [stderr] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stderr] | ++++ [INFO] [stderr] [INFO] [stderr] warning: `rustlings` (bin "rustlings") generated 1 warning [INFO] [stderr] warning: `rustlings` (bin "rustlings" test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-9c6dbc26325f196d) [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test exercise::test::test_pending_state ... ok [INFO] [stdout] test exercise::test::test_finished_exercise ... ok [INFO] [stdout] test exercise::test::test_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' 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: 0x5f9e31d267f2 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5f9e31d267f2 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5f9e31d267f2 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5f9e31d267f2 - ::fmt::ha499add612cccf8e [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5f9e31d4c243 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5f9e31d4c243 - core::fmt::write::hb10c956f5235c8a4 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25 [INFO] [stdout] 6: 0x5f9e31d23913 - std::io::default_write_fmt::hdb7615052be2ba4d [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5f9e31d23913 - std::io::Write::write_fmt::he1bcd251ec6e4153 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5f9e31d26642 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5f9e31d27e1c - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27 [INFO] [stdout] 10: 0x5f9e31d27c72 - std::panicking::default_hook::h7c46b44874fe5c9a [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x5f9e31c7be44 - as core::ops::function::Fn>::call::h178a5fcedee41e2f [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 12: 0x5f9e31c7be44 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5f9e31d288fb - as core::ops::function::Fn>::call::h13602080f5b63276 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 14: 0x5f9e31d288fb - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x5f9e31d285ca - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x5f9e31d26cf9 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 17: 0x5f9e31d2825d - __rustc[18fb429eef004894]::rust_begin_unwind [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x5f9e31d4ad90 - core::panicking::panic_fmt::hd890aeb12c3a3fc3 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x5f9e31d4b136 - core::result::unwrap_failed::h31c9775ec1a50121 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1761:5 [INFO] [stdout] 20: 0x5f9e31c3d774 - core::result::Result::unwrap::h8b6a3460dab53ed8 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1167:23 [INFO] [stdout] 21: 0x5f9e31c3d774 - rustlings::exercise::test::test_clean::hb32f7596d2184676 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:36 [INFO] [stdout] 22: 0x5f9e31c40fe9 - rustlings::exercise::test::test_clean::{{closure}}::hbcdd55c857438306 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x5f9e31c40fe9 - core::ops::function::FnOnce::call_once::h767af3cba588fb7d [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5f9e31c815cb - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5f9e31c815cb - test::__rust_begin_short_backtrace::h7dd7142bd62fa711 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x5f9e31c807be - test::run_test_in_process::{{closure}}::h43a753f038d36b3f [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74 [INFO] [stdout] 27: 0x5f9e31c807be - as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x5f9e31c807be - std::panicking::catch_unwind::do_call::he308587d70ac34ba [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x5f9e31c807be - std::panicking::catch_unwind::h30dcba31973e8fb0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x5f9e31c807be - std::panic::catch_unwind::hfb68364e5621fbee [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5f9e31c807be - test::run_test_in_process::hcdcc2977903b998a [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x5f9e31c807be - test::run_test::{{closure}}::h544a6550958c5d14 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x5f9e31c44334 - test::run_test::{{closure}}::hb172e48ebe2b92c7 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x5f9e31c44334 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 35: 0x5f9e31c47d0a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x5f9e31c47d0a - as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x5f9e31c47d0a - std::panicking::catch_unwind::do_call::h052f373fb905fee0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x5f9e31c47d0a - std::panicking::catch_unwind::hb425d20c8ffb09c8 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x5f9e31c47d0a - std::panic::catch_unwind::ha0d5dfbf18fdeda5 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5f9e31c47d0a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x5f9e31c47d0a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5f9e31d2b857 - as core::ops::function::FnOnce>::call_once::h47377e27fb938a26 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 43: 0x5f9e31d2b857 - as core::ops::function::FnOnce>::call_once::h72f1fe5d095abf57 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 44: 0x5f9e31d2b857 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17 [INFO] [stdout] 45: 0x6ffd7690faa4 - [INFO] [stdout] 46: 0x6ffd7699ca34 - clone [INFO] [stdout] 47: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at src/exercise.rs:342:38: [INFO] [stdout] called `Result::unwrap()` on an `Err` value: ExerciseOutput { stdout: "", stderr: "\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: couldn't create a temp dir: Read-only file system (os error 30) at path \"/opt/rustwide/workdir/./rmetahsoivo\"\u{1b}[0m\n\n\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: aborting due to 1 previous error\u{1b}[0m\n\n" } [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5f9e31d267f2 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5f9e31d267f2 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5f9e31d267f2 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5f9e31d267f2 - ::fmt::ha499add612cccf8e [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5f9e31d4c243 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5f9e31d4c243 - core::fmt::write::hb10c956f5235c8a4 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25 [INFO] [stdout] 6: 0x5f9e31d23913 - std::io::default_write_fmt::hdb7615052be2ba4d [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5f9e31d23913 - std::io::Write::write_fmt::he1bcd251ec6e4153 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5f9e31d26642 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5f9e31d27e1c - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27 [INFO] [stdout] 10: 0x5f9e31d27c72 - std::panicking::default_hook::h7c46b44874fe5c9a [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x5f9e31c7be44 - as core::ops::function::Fn>::call::h178a5fcedee41e2f [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 12: 0x5f9e31c7be44 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5f9e31d288fb - as core::ops::function::Fn>::call::h13602080f5b63276 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 14: 0x5f9e31d288fb - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x5f9e31d285ca - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x5f9e31d26cf9 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18 [INFO] [stdout] 17: 0x5f9e31d2825d - __rustc[18fb429eef004894]::rust_begin_unwind [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x5f9e31d4ad90 - core::panicking::panic_fmt::hd890aeb12c3a3fc3 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x5f9e31d4b136 - core::result::unwrap_failed::h31c9775ec1a50121 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1761:5 [INFO] [stdout] 20: 0x5f9e31c3e82f - core::result::Result::unwrap::h4d2d2f01be727cf4 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1167:23 [INFO] [stdout] 21: 0x5f9e31c3e82f - rustlings::exercise::test::test_exercise_with_output::h9115712adda8be01 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:38 [INFO] [stdout] 22: 0x5f9e31c41049 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hb574039b387eae99 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x5f9e31c41049 - core::ops::function::FnOnce::call_once::hbc1ba7408b866a14 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5f9e31c815cb - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5f9e31c815cb - test::__rust_begin_short_backtrace::h7dd7142bd62fa711 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x5f9e31c807be - test::run_test_in_process::{{closure}}::h43a753f038d36b3f [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74 [INFO] [stdout] 27: 0x5f9e31c807be - as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x5f9e31c807be - std::panicking::catch_unwind::do_call::he308587d70ac34ba [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x5f9e31c807be - std::panicking::catch_unwind::h30dcba31973e8fb0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x5f9e31c807be - std::panic::catch_unwind::hfb68364e5621fbee [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5f9e31c807be - test::run_test_in_process::hcdcc2977903b998a [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x5f9e31c807be - test::run_test::{{closure}}::h544a6550958c5d14 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x5f9e31c44334 - test::run_test::{{closure}}::hb172e48ebe2b92c7 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x5f9e31c44334 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18 [INFO] [stdout] 35: 0x5f9e31c47d0a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x5f9e31c47d0a - as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x5f9e31c47d0a - std::panicking::catch_unwind::do_call::h052f373fb905fee0 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x5f9e31c47d0a - std::panicking::catch_unwind::hb425d20c8ffb09c8 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x5f9e31c47d0a - std::panic::catch_unwind::ha0d5dfbf18fdeda5 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5f9e31c47d0a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x5f9e31c47d0a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5f9e31d2b857 - as core::ops::function::FnOnce>::call_once::h47377e27fb938a26 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 43: 0x5f9e31d2b857 - as core::ops::function::FnOnce>::call_once::h72f1fe5d095abf57 [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 44: 0x5f9e31d2b857 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf [INFO] [stdout] at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17 [INFO] [stdout] 45: 0x6ffd7690faa4 - [INFO] [stdout] 46: 0x6ffd7699ca34 - clone [INFO] [stdout] 47: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] exercise::test::test_clean [INFO] [stdout] exercise::test::test_exercise_with_output [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "7a97e62c9f5a63f2d494e576a334cf5e5f3a38d5952960bbfdad462726e7788e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7a97e62c9f5a63f2d494e576a334cf5e5f3a38d5952960bbfdad462726e7788e", kill_on_drop: false }` [INFO] [stdout] 7a97e62c9f5a63f2d494e576a334cf5e5f3a38d5952960bbfdad462726e7788e