[INFO] cloning repository https://github.com/zhijie-os/my-rustlings-solution [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhijie-os/my-rustlings-solution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhijie-os%2Fmy-rustlings-solution", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhijie-os%2Fmy-rustlings-solution'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cf26b5a4890fe115896d78d89acdfc04c049226b [INFO] testing zhijie-os/my-rustlings-solution/cf26b5a4890fe115896d78d89acdfc04c049226b against 1.77.0 for beta-1.78-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhijie-os%2Fmy-rustlings-solution" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zhijie-os/my-rustlings-solution on toolchain 1.77.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/zhijie-os/my-rustlings-solution [INFO] finished tweaking git repo https://github.com/zhijie-os/my-rustlings-solution [INFO] tweaked toml for git repo https://github.com/zhijie-os/my-rustlings-solution written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/zhijie-os/my-rustlings-solution 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" "+1.77.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ffd9452dc6d996997d5d1dbc2f53e203a2589a529abf764a930136e0ae4e06bd [INFO] running `Command { std: "docker" "start" "-a" "ffd9452dc6d996997d5d1dbc2f53e203a2589a529abf764a930136e0ae4e06bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ffd9452dc6d996997d5d1dbc2f53e203a2589a529abf764a930136e0ae4e06bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ffd9452dc6d996997d5d1dbc2f53e203a2589a529abf764a930136e0ae4e06bd", kill_on_drop: false }` [INFO] [stdout] ffd9452dc6d996997d5d1dbc2f53e203a2589a529abf764a930136e0ae4e06bd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4e5e320bdfc91afb630b9adda10f6272d119ff919cc0e9ce87916e698eb5798e [INFO] running `Command { std: "docker" "start" "-a" "4e5e320bdfc91afb630b9adda10f6272d119ff919cc0e9ce87916e698eb5798e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.100 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling bitflags v1.3.2 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.9 [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 inotify v0.7.1 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.5.9 [INFO] [stderr] Compiling rustlings v4.7.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.54s [INFO] running `Command { std: "docker" "inspect" "4e5e320bdfc91afb630b9adda10f6272d119ff919cc0e9ce87916e698eb5798e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4e5e320bdfc91afb630b9adda10f6272d119ff919cc0e9ce87916e698eb5798e", kill_on_drop: false }` [INFO] [stdout] 4e5e320bdfc91afb630b9adda10f6272d119ff919cc0e9ce87916e698eb5798e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5bb68ba8df7b4af44d22c6db589817289da17e62c5d2054079e0248e6f14cb3e [INFO] running `Command { std: "docker" "start" "-a" "5bb68ba8df7b4af44d22c6db589817289da17e62c5d2054079e0248e6f14cb3e", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling predicates-core v1.0.2 [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 predicates-tree v1.0.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling num-traits v0.2.14 [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 v4.7.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.20s [INFO] running `Command { std: "docker" "inspect" "5bb68ba8df7b4af44d22c6db589817289da17e62c5d2054079e0248e6f14cb3e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5bb68ba8df7b4af44d22c6db589817289da17e62c5d2054079e0248e6f14cb3e", kill_on_drop: false }` [INFO] [stdout] 5bb68ba8df7b4af44d22c6db589817289da17e62c5d2054079e0248e6f14cb3e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5b5aea313eb1bfd6794dac803d798ba95260387256bf7aa719ff0cd2172fd4ff [INFO] running `Command { std: "docker" "start" "-a" "5b5aea313eb1bfd6794dac803d798ba95260387256bf7aa719ff0cd2172fd4ff", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustlings-c4c1ad4c4deb3ced) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-52618330541f1d03) [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 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: 0x55e6a67fc6b6 - std::backtrace_rs::backtrace::libunwind::trace::h92ba5ac126ecc5ad [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55e6a67fc6b6 - std::backtrace_rs::backtrace::trace_unsynchronized::hfaa118b6e3a8f31a [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55e6a67fc6b6 - std::sys_common::backtrace::_print_fmt::h2075f185adf13bbd [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55e6a67fc6b6 - ::fmt::h9c4bd387f9f3f544 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55e6a68254f0 - core::fmt::rt::Argument::fmt::h018ecebdf268b5bb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55e6a68254f0 - core::fmt::write::h938c332fdab924eb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55e6a67f9f7f - std::io::Write::write_fmt::hf5d6d29a094a9ad9 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/io/mod.rs:1846:15 [INFO] [stdout] 7: 0x55e6a67fc494 - std::sys_common::backtrace::_print::h3595c0f4303f3ccd [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55e6a67fc494 - std::sys_common::backtrace::print::ha888e6736b0bc71f [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55e6a67fe207 - std::panicking::default_hook::{{closure}}::he19a7f79f7beab5e [INFO] [stdout] 10: 0x55e6a67fdeed - std::panicking::default_hook::h67efe04e9a5d446e [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55e6a667d6b7 - as core::ops::function::Fn>::call::ha485cc981b933d53 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 12: 0x55e6a667d6b7 - test::test_main::{{closure}}::h970c4d535211cea5 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:138:21 [INFO] [stdout] 13: 0x55e6a67fe826 - as core::ops::function::Fn>::call::h9c9759b104a0af15 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 14: 0x55e6a67fe826 - std::panicking::rust_panic_with_hook::h49021cdbc4b22349 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:785:13 [INFO] [stdout] 15: 0x55e6a67fe572 - std::panicking::begin_panic_handler::{{closure}}::hfbf601f3d8c62d13 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:659:13 [INFO] [stdout] 16: 0x55e6a67fcbb6 - std::sys_common::backtrace::__rust_end_short_backtrace::h98dd020b6e913806 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55e6a67fe2c4 - rust_begin_unwind [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:647:5 [INFO] [stdout] 18: 0x55e6a6634d35 - core::panicking::panic_fmt::h0d3f1893e38be419 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55e6a6635313 - core::result::unwrap_failed::h1356562ef8bc898c [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/result.rs:1649:5 [INFO] [stdout] 20: 0x55e6a663fe9a - core::result::Result::unwrap::h465c7bae67de0e02 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/result.rs:1073:23 [INFO] [stdout] 21: 0x55e6a663fe9a - rustlings::exercise::test::test_clean::ha2f802c82f369e29 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:9 [INFO] [stdout] 22: 0x55e6a663fdd7 - rustlings::exercise::test::test_clean::{{closure}}::h560f6ab610045575 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x55e6a6636c56 - core::ops::function::FnOnce::call_once::hbc21954f36b00f9c [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55e6a66832af - core::ops::function::FnOnce::call_once::hc4365f2905c13fb3 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55e6a66832af - test::__rust_begin_short_backtrace::h23efa09c82420171 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:621:18 [INFO] [stdout] 26: 0x55e6a66820d1 - test::run_test_in_process::{{closure}}::hf1473bb1a6c04edb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:60 [INFO] [stdout] 27: 0x55e6a66820d1 - as core::ops::function::FnOnce<()>>::call_once::hff07c3f39ec1a940 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55e6a66820d1 - std::panicking::try::do_call::h344a2a0d830f8cdb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40 [INFO] [stdout] 29: 0x55e6a66820d1 - std::panicking::try::h307dc78c49c41dfc [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19 [INFO] [stdout] 30: 0x55e6a66820d1 - std::panic::catch_unwind::h09ff4c41f37beb25 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55e6a66820d1 - test::run_test_in_process::h25a8f909b68e3831 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:27 [INFO] [stdout] 32: 0x55e6a66820d1 - test::run_test::{{closure}}::h9934b77d061da8ff [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:567:43 [INFO] [stdout] 33: 0x55e6a66494b6 - test::run_test::{{closure}}::hc3fe15393b08198a [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:595:41 [INFO] [stdout] 34: 0x55e6a66494b6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2751c43450246c92 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55e6a664e4f7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h1c68a4efdf3a14d2 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:529:17 [INFO] [stdout] 36: 0x55e6a664e4f7 - as core::ops::function::FnOnce<()>>::call_once::he4aa23e023cec824 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55e6a664e4f7 - std::panicking::try::do_call::hb75ff41794a19e9d [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40 [INFO] [stdout] 38: 0x55e6a664e4f7 - std::panicking::try::ha7903bccf307108c [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19 [INFO] [stdout] 39: 0x55e6a664e4f7 - std::panic::catch_unwind::h85a1dff12b1bcadc [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55e6a664e4f7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h2c9f92cbe6cfd7e3 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:528:30 [INFO] [stdout] 41: 0x55e6a664e4f7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7d4afe73c576828a [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55e6a6802d55 - as core::ops::function::FnOnce>::call_once::h4f08d401a486e446 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 43: 0x55e6a6802d55 - as core::ops::function::FnOnce>::call_once::h3476dfcdba628abc [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 44: 0x55e6a6802d55 - std::sys::pal::unix::thread::Thread::new::thread_start::h2770ac7f8882db09 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys/pal/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f3cdf476ac3 - [INFO] [stdout] 46: 0x7f3cdf507bf4 - __clone [INFO] [stdout] 47: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output 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/./rmetaPFtNDA\"\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: 0x55e6a67fc6b6 - std::backtrace_rs::backtrace::libunwind::trace::h92ba5ac126ecc5ad [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stdout] 1: 0x55e6a67fc6b6 - std::backtrace_rs::backtrace::trace_unsynchronized::hfaa118b6e3a8f31a [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x55e6a67fc6b6 - std::sys_common::backtrace::_print_fmt::h2075f185adf13bbd [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stdout] 3: 0x55e6a67fc6b6 - ::fmt::h9c4bd387f9f3f544 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x55e6a68254f0 - core::fmt::rt::Argument::fmt::h018ecebdf268b5bb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/rt.rs:142:9 [INFO] [stdout] 5: 0x55e6a68254f0 - core::fmt::write::h938c332fdab924eb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/fmt/mod.rs:1120:17 [INFO] [stdout] 6: 0x55e6a67f9f7f - std::io::Write::write_fmt::hf5d6d29a094a9ad9 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/io/mod.rs:1846:15 [INFO] [stdout] 7: 0x55e6a67fc494 - std::sys_common::backtrace::_print::h3595c0f4303f3ccd [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 8: 0x55e6a67fc494 - std::sys_common::backtrace::print::ha888e6736b0bc71f [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 9: 0x55e6a67fe207 - std::panicking::default_hook::{{closure}}::he19a7f79f7beab5e [INFO] [stdout] 10: 0x55e6a67fdeed - std::panicking::default_hook::h67efe04e9a5d446e [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:289:9 [INFO] [stdout] 11: 0x55e6a667d6b7 - as core::ops::function::Fn>::call::ha485cc981b933d53 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 12: 0x55e6a667d6b7 - test::test_main::{{closure}}::h970c4d535211cea5 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:138:21 [INFO] [stdout] 13: 0x55e6a67fe826 - as core::ops::function::Fn>::call::h9c9759b104a0af15 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2029:9 [INFO] [stdout] 14: 0x55e6a67fe826 - std::panicking::rust_panic_with_hook::h49021cdbc4b22349 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:785:13 [INFO] [stdout] 15: 0x55e6a67fe572 - std::panicking::begin_panic_handler::{{closure}}::hfbf601f3d8c62d13 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:659:13 [INFO] [stdout] 16: 0x55e6a67fcbb6 - std::sys_common::backtrace::__rust_end_short_backtrace::h98dd020b6e913806 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stdout] 17: 0x55e6a67fe2c4 - rust_begin_unwind [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:647:5 [INFO] [stdout] 18: 0x55e6a6634d35 - core::panicking::panic_fmt::h0d3f1893e38be419 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panicking.rs:72:14 [INFO] [stdout] 19: 0x55e6a6635313 - core::result::unwrap_failed::h1356562ef8bc898c [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/result.rs:1649:5 [INFO] [stdout] 20: 0x55e6a6640d56 - core::result::Result::unwrap::hac825b1382a1f57d [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/result.rs:1073:23 [INFO] [stdout] 21: 0x55e6a6640d56 - rustlings::exercise::test::test_exercise_with_output::h06656de6bf72e39c [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:19 [INFO] [stdout] 22: 0x55e6a6640b67 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hcf0d411f574d56a7 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x55e6a6636cf6 - core::ops::function::FnOnce::call_once::hf467d614c7a28296 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x55e6a66832af - core::ops::function::FnOnce::call_once::hc4365f2905c13fb3 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x55e6a66832af - test::__rust_begin_short_backtrace::h23efa09c82420171 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:621:18 [INFO] [stdout] 26: 0x55e6a66820d1 - test::run_test_in_process::{{closure}}::hf1473bb1a6c04edb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:60 [INFO] [stdout] 27: 0x55e6a66820d1 - as core::ops::function::FnOnce<()>>::call_once::hff07c3f39ec1a940 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x55e6a66820d1 - std::panicking::try::do_call::h344a2a0d830f8cdb [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40 [INFO] [stdout] 29: 0x55e6a66820d1 - std::panicking::try::h307dc78c49c41dfc [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19 [INFO] [stdout] 30: 0x55e6a66820d1 - std::panic::catch_unwind::h09ff4c41f37beb25 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14 [INFO] [stdout] 31: 0x55e6a66820d1 - test::run_test_in_process::h25a8f909b68e3831 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:644:27 [INFO] [stdout] 32: 0x55e6a66820d1 - test::run_test::{{closure}}::h9934b77d061da8ff [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:567:43 [INFO] [stdout] 33: 0x55e6a66494b6 - test::run_test::{{closure}}::hc3fe15393b08198a [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/test/src/lib.rs:595:41 [INFO] [stdout] 34: 0x55e6a66494b6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2751c43450246c92 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys_common/backtrace.rs:155:18 [INFO] [stdout] 35: 0x55e6a664e4f7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h1c68a4efdf3a14d2 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:529:17 [INFO] [stdout] 36: 0x55e6a664e4f7 - as core::ops::function::FnOnce<()>>::call_once::he4aa23e023cec824 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x55e6a664e4f7 - std::panicking::try::do_call::hb75ff41794a19e9d [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:554:40 [INFO] [stdout] 38: 0x55e6a664e4f7 - std::panicking::try::ha7903bccf307108c [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panicking.rs:518:19 [INFO] [stdout] 39: 0x55e6a664e4f7 - std::panic::catch_unwind::h85a1dff12b1bcadc [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/panic.rs:142:14 [INFO] [stdout] 40: 0x55e6a664e4f7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h2c9f92cbe6cfd7e3 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/thread/mod.rs:528:30 [INFO] [stdout] 41: 0x55e6a664e4f7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7d4afe73c576828a [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x55e6a6802d55 - as core::ops::function::FnOnce>::call_once::h4f08d401a486e446 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 43: 0x55e6a6802d55 - as core::ops::function::FnOnce>::call_once::h3476dfcdba628abc [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/alloc/src/boxed.rs:2015:9 [INFO] [stdout] 44: 0x55e6a6802d55 - std::sys::pal::unix::thread::Thread::new::thread_start::h2770ac7f8882db09 [INFO] [stdout] at /rustc/aedd173a2c086e558c2b66d3743b344f977621a7/library/std/src/sys/pal/unix/thread.rs:108:17 [INFO] [stdout] 45: 0x7f3cdf476ac3 - [INFO] [stdout] 46: 0x7f3cdf507bf4 - __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] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "5b5aea313eb1bfd6794dac803d798ba95260387256bf7aa719ff0cd2172fd4ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5b5aea313eb1bfd6794dac803d798ba95260387256bf7aa719ff0cd2172fd4ff", kill_on_drop: false }` [INFO] [stdout] 5b5aea313eb1bfd6794dac803d798ba95260387256bf7aa719ff0cd2172fd4ff