[INFO] cloning repository https://github.com/zheyizhifeng/rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zheyizhifeng/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzheyizhifeng%2Frustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzheyizhifeng%2Frustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0db4bda8d5bbeb8890e9a80d264f726ea3469c28 [INFO] testing zheyizhifeng/rustlings against master#61469b682c2b0bf9cebc4622f1859e2bb3b7ebca for pr-91743 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzheyizhifeng%2Frustlings" "/workspace/builds/worker-54/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-54/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zheyizhifeng/rustlings on toolchain 61469b682c2b0bf9cebc4622f1859e2bb3b7ebca [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/zheyizhifeng/rustlings [INFO] finished tweaking git repo https://github.com/zheyizhifeng/rustlings [INFO] tweaked toml for git repo https://github.com/zheyizhifeng/rustlings written to /workspace/builds/worker-54/source/Cargo.toml [INFO] crate git repo https://github.com/zheyizhifeng/rustlings already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "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 v1.0.8 [INFO] [stderr] Downloaded terminal_size v0.1.17 [INFO] [stderr] Downloaded number_prefix v0.2.8 [INFO] [stderr] Downloaded inotify v0.7.1 [INFO] [stderr] Downloaded difference v2.0.0 [INFO] [stderr] Downloaded libc v0.2.100 [INFO] [stderr] Downloaded argh v0.1.5 [INFO] [stderr] Downloaded argh_derive v0.1.5 [INFO] [stderr] Downloaded predicates-core v1.0.2 [INFO] [stderr] Downloaded serde_derive v1.0.129 [INFO] [stderr] Downloaded argh_shared v0.1.5 [INFO] [stderr] Downloaded escargot v0.4.0 [INFO] [stderr] Downloaded predicates-tree v1.0.3 [INFO] [stderr] Downloaded assert_cmd v0.11.1 [INFO] [stderr] Downloaded console v0.7.7 [INFO] [stderr] Downloaded serde v1.0.129 [INFO] [stderr] Downloaded treeline v0.1.0 [INFO] [stderr] Downloaded normalize-line-endings v0.3.0 [INFO] [stderr] Downloaded indicatif v0.10.3 [INFO] [stderr] Downloaded fsevent v0.4.0 [INFO] [stderr] Downloaded fsevent-sys v2.0.1 [INFO] [stderr] Downloaded slab v0.4.4 [INFO] [stderr] Downloaded notify v4.0.17 [INFO] [stderr] Downloaded console v0.14.1 [INFO] [stderr] Downloaded float-cmp v0.8.0 [INFO] [stderr] Downloaded serde_json v1.0.66 [INFO] [stderr] Downloaded filetime v0.2.15 [INFO] [stderr] Downloaded syn v1.0.75 [INFO] [stderr] Downloaded clicolors-control v1.0.1 [INFO] [stderr] Downloaded encode_unicode v0.3.6 [INFO] [stderr] Downloaded termios v0.3.3 [INFO] [stderr] Downloaded instant v0.1.10 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ad511a77775324fa09d20fb7e61b1284bed3a9575dea4d01f2ebeb8077dcd46c [INFO] running `Command { std: "docker" "start" "-a" "ad511a77775324fa09d20fb7e61b1284bed3a9575dea4d01f2ebeb8077dcd46c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ad511a77775324fa09d20fb7e61b1284bed3a9575dea4d01f2ebeb8077dcd46c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad511a77775324fa09d20fb7e61b1284bed3a9575dea4d01f2ebeb8077dcd46c", kill_on_drop: false }` [INFO] [stdout] ad511a77775324fa09d20fb7e61b1284bed3a9575dea4d01f2ebeb8077dcd46c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 972f0333c24741178642d7c25760134f767d36f99fbc4c18c3cd970bed86938c [INFO] running `Command { std: "docker" "start" "-a" "972f0333c24741178642d7c25760134f767d36f99fbc4c18c3cd970bed86938c", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling regex-syntax v0.6.25 [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 serde v1.0.129 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling instant v0.1.10 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [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 termios v0.3.3 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling console v0.14.1 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v4.6.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2m 35s [INFO] running `Command { std: "docker" "inspect" "972f0333c24741178642d7c25760134f767d36f99fbc4c18c3cd970bed86938c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "972f0333c24741178642d7c25760134f767d36f99fbc4c18c3cd970bed86938c", kill_on_drop: false }` [INFO] [stdout] 972f0333c24741178642d7c25760134f767d36f99fbc4c18c3cd970bed86938c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3e7e6dfd033960dc0d13a21ca9002c66ea7112b497ebb2e198b8ab79e402959d [INFO] running `Command { std: "docker" "start" "-a" "3e7e6dfd033960dc0d13a21ca9002c66ea7112b497ebb2e198b8ab79e402959d", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v4.6.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 27.09s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-93d7dd7975bb1321) [INFO] [stderr] Executable tests/integration_tests.rs (/opt/rustwide/target/debug/deps/integration_tests-9c553f6e8b723465) [INFO] running `Command { std: "docker" "inspect" "3e7e6dfd033960dc0d13a21ca9002c66ea7112b497ebb2e198b8ab79e402959d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e7e6dfd033960dc0d13a21ca9002c66ea7112b497ebb2e198b8ab79e402959d", kill_on_drop: false }` [INFO] [stdout] 3e7e6dfd033960dc0d13a21ca9002c66ea7112b497ebb2e198b8ab79e402959d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+61469b682c2b0bf9cebc4622f1859e2bb3b7ebca" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 520a6400df1272ba75e455b518a7a78c9262dfb40adbbc92f4ea761ee02e2ac2 [INFO] running `Command { std: "docker" "start" "-a" "520a6400df1272ba75e455b518a7a78c9262dfb40adbbc92f4ea761ee02e2ac2", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 5.84s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-93d7dd7975bb1321) [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] thread 'exercise::test::test_clean' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }', src/exercise.rs:270:36 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55f3d62c551d - std::backtrace_rs::backtrace::libunwind::trace::h44a778e1067a5f21 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stdout] 1: 0x55f3d62c551d - std::backtrace_rs::backtrace::trace_unsynchronized::h16574a507425748e [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55f3d62c551d - std::sys_common::backtrace::_print_fmt::h861b0076a4de945a [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stdout] 3: 0x55f3d62c551d - ::fmt::h9ce5da3cd6da43a8 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stdout] 4: 0x55f3d62e841c - core::fmt::write::h1390c9a652e8cdd1 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/fmt/mod.rs:1194:17 [INFO] [stdout] 5: 0x55f3d62c1ff1 - std::io::Write::write_fmt::ha442f32f8d5414d6 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/io/mod.rs:1655:15 [INFO] [stdout] 6: 0x55f3d62c6ff5 - std::sys_common::backtrace::_print::hd97319905e74a1cc [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stdout] 7: 0x55f3d62c6ff5 - std::sys_common::backtrace::print::hf2b7c3f20e1fcf0f [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stdout] 8: 0x55f3d62c6ff5 - std::panicking::default_hook::{{closure}}::ha3cefa7731ebf0d7 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:295:22 [INFO] [stdout] 9: 0x55f3d62c6ca0 - std::panicking::default_hook::h81ad71c1a6c711df [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:311:9 [INFO] [stdout] 10: 0x55f3d62c75c8 - std::panicking::rust_panic_with_hook::haf30755e05c3fb67 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:698:17 [INFO] [stdout] 11: 0x55f3d62c7477 - std::panicking::begin_panic_handler::{{closure}}::h1e6281abfdd9b154 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:588:13 [INFO] [stdout] 12: 0x55f3d62c59d4 - std::sys_common::backtrace::__rust_end_short_backtrace::hda73270e8e0a5e6c [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:138:18 [INFO] [stdout] 13: 0x55f3d62c71a9 - rust_begin_unwind [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:584:5 [INFO] [stdout] 14: 0x55f3d60bbb53 - core::panicking::panic_fmt::hba45c7c62f73c42f [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/panicking.rs:142:14 [INFO] [stdout] 15: 0x55f3d60bbc43 - core::result::unwrap_failed::hc8d9a4215bc46297 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/result.rs:1785:5 [INFO] [stdout] 16: 0x55f3d60c6af0 - core::result::Result::unwrap::h48dff7df61993ad9 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/result.rs:1078:23 [INFO] [stdout] 17: 0x55f3d60bfc39 - rustlings::exercise::test::test_clean::h64de7f90d8fa9493 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:270:9 [INFO] [stdout] 18: 0x55f3d60bfbca - rustlings::exercise::test::test_clean::{{closure}}::hf370b567e4cbb2db [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:5 [INFO] [stdout] 19: 0x55f3d60c90fe - core::ops::function::FnOnce::call_once::h3f0c3637630d6398 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 20: 0x55f3d6105d73 - core::ops::function::FnOnce::call_once::h3468a0bc33c62b42 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 21: 0x55f3d6105d73 - test::__rust_begin_short_backtrace::h6b24e52f00415b3b [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:573:5 [INFO] [stdout] 22: 0x55f3d6104aca - as core::ops::function::FnOnce>::call_once::h583f8ba824895d37 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 23: 0x55f3d6104aca - as core::ops::function::FnOnce<()>>::call_once::h5c3fd26646ab1aea [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x55f3d6104aca - std::panicking::try::do_call::hfc597aa6e93ef09a [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:492:40 [INFO] [stdout] 25: 0x55f3d6104aca - std::panicking::try::h20e466446f96d50b [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:456:19 [INFO] [stdout] 26: 0x55f3d6104aca - std::panic::catch_unwind::h753a1457bfe71e06 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panic.rs:137:14 [INFO] [stdout] 27: 0x55f3d6104aca - test::run_test_in_process::h8086fc04ce8e70cd [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:596:18 [INFO] [stdout] 28: 0x55f3d6104aca - test::run_test::run_test_inner::{{closure}}::h232ee16799391e53 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:490:39 [INFO] [stdout] 29: 0x55f3d60d0d5d - test::run_test::run_test_inner::{{closure}}::h62f39ad8e395c3cb [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:517:37 [INFO] [stdout] 30: 0x55f3d60d0d5d - std::sys_common::backtrace::__rust_begin_short_backtrace::h0cd18bbd90281594 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:122:18 [INFO] [stdout] 31: 0x55f3d60d68a8 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h76faf0b8f9438144 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/thread/mod.rs:500:17 [INFO] [stdout] 32: 0x55f3d60d68a8 - as core::ops::function::FnOnce<()>>::call_once::h619ec609d9f91257 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x55f3d60d68a8 - std::panicking::try::do_call::h6b524da958203db0 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:492:40 [INFO] [stdout] 34: 0x55f3d60d68a8 - std::panicking::try::ha7714f4b12ef18a3 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:456:19 [INFO] [stdout] 35: 0x55f3d60d68a8 - std::panic::catch_unwind::haf6b76dc26ebe248 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panic.rs:137:14 [INFO] [stdout] 36: 0x55f3d60d68a8 - std::thread::Builder::spawn_unchecked_::{{closure}}::h9a9adb11173e1aec [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/thread/mod.rs:499:30 [INFO] [stdout] 37: 0x55f3d60d68a8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb64423196fd10803 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 38: 0x55f3d62cbee3 - as core::ops::function::FnOnce>::call_once::h1937631430e9c124 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 39: 0x55f3d62cbee3 - as core::ops::function::FnOnce>::call_once::h7f819e94dbb3f33d [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 40: 0x55f3d62cbee3 - std::sys::unix::thread::Thread::new::thread_start::h523d89aeadfd693e [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 41: 0x7fe9a9b77609 - start_thread [INFO] [stdout] 42: 0x7fe9a9ccc163 - clone [INFO] [stdout] 43: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at '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: could not write output to ./temp_8_ThreadId3.3pjitpbvd57ixq59.rcgu.o: Read-only file system\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 previous error\u{1b}[0m\n\n" }', src/exercise.rs:343:38 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55f3d62c551d - std::backtrace_rs::backtrace::libunwind::trace::h44a778e1067a5f21 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stdout] 1: 0x55f3d62c551d - std::backtrace_rs::backtrace::trace_unsynchronized::h16574a507425748e [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55f3d62c551d - std::sys_common::backtrace::_print_fmt::h861b0076a4de945a [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stdout] 3: 0x55f3d62c551d - ::fmt::h9ce5da3cd6da43a8 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stdout] 4: 0x55f3d62e841c - core::fmt::write::h1390c9a652e8cdd1 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/fmt/mod.rs:1194:17 [INFO] [stdout] 5: 0x55f3d62c1ff1 - std::io::Write::write_fmt::ha442f32f8d5414d6 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/io/mod.rs:1655:15 [INFO] [stdout] 6: 0x55f3d62c6ff5 - std::sys_common::backtrace::_print::hd97319905e74a1cc [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stdout] 7: 0x55f3d62c6ff5 - std::sys_common::backtrace::print::hf2b7c3f20e1fcf0f [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stdout] 8: 0x55f3d62c6ff5 - std::panicking::default_hook::{{closure}}::ha3cefa7731ebf0d7 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:295:22 [INFO] [stdout] 9: 0x55f3d62c6ca0 - std::panicking::default_hook::h81ad71c1a6c711df [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:311:9 [INFO] [stdout] 10: 0x55f3d62c75c8 - std::panicking::rust_panic_with_hook::haf30755e05c3fb67 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:698:17 [INFO] [stdout] 11: 0x55f3d62c7477 - std::panicking::begin_panic_handler::{{closure}}::h1e6281abfdd9b154 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:588:13 [INFO] [stdout] 12: 0x55f3d62c59d4 - std::sys_common::backtrace::__rust_end_short_backtrace::hda73270e8e0a5e6c [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:138:18 [INFO] [stdout] 13: 0x55f3d62c71a9 - rust_begin_unwind [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:584:5 [INFO] [stdout] 14: 0x55f3d60bbb53 - core::panicking::panic_fmt::hba45c7c62f73c42f [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/panicking.rs:142:14 [INFO] [stdout] 15: 0x55f3d60bbc43 - core::result::unwrap_failed::hc8d9a4215bc46297 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/result.rs:1785:5 [INFO] [stdout] 16: 0x55f3d60c6ba2 - core::result::Result::unwrap::hb063e29c14bd4f99 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/result.rs:1078:23 [INFO] [stdout] 17: 0x55f3d60c089c - rustlings::exercise::test::test_exercise_with_output::hd7c49f214254a4f8 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:343:19 [INFO] [stdout] 18: 0x55f3d60c072a - rustlings::exercise::test::test_exercise_with_output::{{closure}}::ha14811b162dc2cb9 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:336:5 [INFO] [stdout] 19: 0x55f3d60c913e - core::ops::function::FnOnce::call_once::h6097b6187e17b893 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 20: 0x55f3d6105d73 - core::ops::function::FnOnce::call_once::h3468a0bc33c62b42 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 21: 0x55f3d6105d73 - test::__rust_begin_short_backtrace::h6b24e52f00415b3b [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:573:5 [INFO] [stdout] 22: 0x55f3d6104aca - as core::ops::function::FnOnce>::call_once::h583f8ba824895d37 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 23: 0x55f3d6104aca - as core::ops::function::FnOnce<()>>::call_once::h5c3fd26646ab1aea [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 24: 0x55f3d6104aca - std::panicking::try::do_call::hfc597aa6e93ef09a [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:492:40 [INFO] [stdout] 25: 0x55f3d6104aca - std::panicking::try::h20e466446f96d50b [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:456:19 [INFO] [stdout] 26: 0x55f3d6104aca - std::panic::catch_unwind::h753a1457bfe71e06 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panic.rs:137:14 [INFO] [stdout] 27: 0x55f3d6104aca - test::run_test_in_process::h8086fc04ce8e70cd [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:596:18 [INFO] [stdout] 28: 0x55f3d6104aca - test::run_test::run_test_inner::{{closure}}::h232ee16799391e53 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:490:39 [INFO] [stdout] 29: 0x55f3d60d0d5d - test::run_test::run_test_inner::{{closure}}::h62f39ad8e395c3cb [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/test/src/lib.rs:517:37 [INFO] [stdout] 30: 0x55f3d60d0d5d - std::sys_common::backtrace::__rust_begin_short_backtrace::h0cd18bbd90281594 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys_common/backtrace.rs:122:18 [INFO] [stdout] 31: 0x55f3d60d68a8 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h76faf0b8f9438144 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/thread/mod.rs:500:17 [INFO] [stdout] 32: 0x55f3d60d68a8 - as core::ops::function::FnOnce<()>>::call_once::h619ec609d9f91257 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 33: 0x55f3d60d68a8 - std::panicking::try::do_call::h6b524da958203db0 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:492:40 [INFO] [stdout] 34: 0x55f3d60d68a8 - std::panicking::try::ha7714f4b12ef18a3 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panicking.rs:456:19 [INFO] [stdout] 35: 0x55f3d60d68a8 - std::panic::catch_unwind::haf6b76dc26ebe248 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/panic.rs:137:14 [INFO] [stdout] 36: 0x55f3d60d68a8 - std::thread::Builder::spawn_unchecked_::{{closure}}::h9a9adb11173e1aec [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/thread/mod.rs:499:30 [INFO] [stdout] 37: 0x55f3d60d68a8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb64423196fd10803 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/core/src/ops/function.rs:248:5 [INFO] [stdout] 38: 0x55f3d62cbee3 - as core::ops::function::FnOnce>::call_once::h1937631430e9c124 [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 39: 0x55f3d62cbee3 - as core::ops::function::FnOnce>::call_once::h7f819e94dbb3f33d [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/alloc/src/boxed.rs:1866:9 [INFO] [stdout] 40: 0x55f3d62cbee3 - std::sys::unix::thread::Thread::new::thread_start::h523d89aeadfd693e [INFO] [stdout] at /rustc/61469b682c2b0bf9cebc4622f1859e2bb3b7ebca/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 41: 0x7fe9a9b77609 - start_thread [INFO] [stdout] 42: 0x7fe9a9ccc163 - clone [INFO] [stdout] 43: 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 0.12s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--bin rustlings' [INFO] running `Command { std: "docker" "inspect" "520a6400df1272ba75e455b518a7a78c9262dfb40adbbc92f4ea761ee02e2ac2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "520a6400df1272ba75e455b518a7a78c9262dfb40adbbc92f4ea761ee02e2ac2", kill_on_drop: false }` [INFO] [stdout] 520a6400df1272ba75e455b518a7a78c9262dfb40adbbc92f4ea761ee02e2ac2