[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-Sunrisepeak
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-Sunrisepeak" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-Sunrisepeak", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-Sunrisepeak'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d08702c96d0e37cce948fe709a87217334731d0
[INFO] testing LearningOS/rust-rustlings-Sunrisepeak against try#17092ad00ed8fe1e7f81a7e38238ff70779034b1 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-Sunrisepeak" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-Sunrisepeak on toolchain 17092ad00ed8fe1e7f81a7e38238ff70779034b1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LearningOS/rust-rustlings-Sunrisepeak
[INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-Sunrisepeak
[INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-Sunrisepeak written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LearningOS/rust-rustlings-Sunrisepeak 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" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2451256caa5bcde9fbe3e2652d29d1d98f1402cffb43b58f18e419d8907db197
[INFO] running `Command { std: "docker" "start" "-a" "2451256caa5bcde9fbe3e2652d29d1d98f1402cffb43b58f18e419d8907db197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2451256caa5bcde9fbe3e2652d29d1d98f1402cffb43b58f18e419d8907db197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2451256caa5bcde9fbe3e2652d29d1d98f1402cffb43b58f18e419d8907db197", kill_on_drop: false }`
[INFO] [stdout] 2451256caa5bcde9fbe3e2652d29d1d98f1402cffb43b58f18e419d8907db197
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2c55f4dc5c8d9a0437f3b7e8f06b82a9857564c77f3cffe60f1556722424531
[INFO] running `Command { std: "docker" "start" "-a" "a2c55f4dc5c8d9a0437f3b7e8f06b82a9857564c77f3cffe60f1556722424531", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "a2c55f4dc5c8d9a0437f3b7e8f06b82a9857564c77f3cffe60f1556722424531", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2c55f4dc5c8d9a0437f3b7e8f06b82a9857564c77f3cffe60f1556722424531", kill_on_drop: false }`
[INFO] [stdout] a2c55f4dc5c8d9a0437f3b7e8f06b82a9857564c77f3cffe60f1556722424531
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce2611235113d849c668955ee38ae84c6a24789233a799535ba67a31354966eb
[INFO] running `Command { std: "docker" "start" "-a" "ce2611235113d849c668955ee38ae84c6a24789233a799535ba67a31354966eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `Command { std: "docker" "inspect" "ce2611235113d849c668955ee38ae84c6a24789233a799535ba67a31354966eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce2611235113d849c668955ee38ae84c6a24789233a799535ba67a31354966eb", kill_on_drop: false }`
[INFO] [stdout] ce2611235113d849c668955ee38ae84c6a24789233a799535ba67a31354966eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+17092ad00ed8fe1e7f81a7e38238ff70779034b1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2205953e2fb8b754ad2dd6dbe48ffd98aed654f0582423b60f0122f203b78c6d
[INFO] running `Command { std: "docker" "start" "-a" "2205953e2fb8b754ad2dd6dbe48ffd98aed654f0582423b60f0122f203b78c6d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-6e8f68f3cfba7ee7)
[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:     0x589d90be5442 - std::backtrace_rs::backtrace::libunwind::trace::h2bdbdb423cc746ad
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x589d90be5442 - std::backtrace_rs::backtrace::trace_unsynchronized::h876081fa48c0856a
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x589d90be5442 - std::sys::backtrace::_print_fmt::h744638bebbff2806
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x589d90be5442 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::he6e74fa9d0076b5d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x589d90c09dc3 - core::fmt::rt::Argument::fmt::hf88a3177e76af877
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x589d90c09dc3 - core::fmt::write::h6442196e41589522
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/fmt/mod.rs:1446:25
[INFO] [stdout]    6:     0x589d90be23a3 - std::io::default_write_fmt::h19b804dc75596022
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x589d90be23a3 - std::io::Write::write_fmt::h561df7c669043671
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/io/mod.rs:1914:13
[INFO] [stdout]    8:     0x589d90be5292 - std::sys::backtrace::BacktraceLock::print::h25e1ce4c29150054
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x589d90be6a7c - std::panicking::default_hook::{{closure}}::h36663bdaae83f2bb
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:300:22
[INFO] [stdout]   10:     0x589d90be68d2 - std::panicking::default_hook::hb9d7c40580cf1835
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x589d90a7fd64 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h53bdf3f1ac68020f
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1980:9
[INFO] [stdout]   12:     0x589d90a7fd64 - test::test_main_with_exit_callback::{{closure}}::h3ae9af1665ff5b7d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x589d90be7573 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha3a705c6ebc0f8fb
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1980:9
[INFO] [stdout]   14:     0x589d90be7573 - std::panicking::rust_panic_with_hook::h2d703857e4ba629f
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x589d90be722a - std::panicking::begin_panic_handler::{{closure}}::h53dd12a17ad784b1
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x589d90be5949 - std::sys::backtrace::__rust_end_short_backtrace::hf54a874920d38937
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x589d90be6ebd - __rustc[22d03d94d4da23d0]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x589d90c08830 - core::panicking::panic_fmt::hb74c170c8276d1d6
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x589d90c08c96 - core::result::unwrap_failed::hc1dbbc53e2530a6b
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/result.rs:1732:5
[INFO] [stdout]   20:     0x589d90a3c53c - core::result::Result<T,E>::unwrap::hd5c75ad29b1c57a1
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/result.rs:1137:23
[INFO] [stdout]   21:     0x589d90a3c53c - rustlings::exercise::test::test_clean::h6c5ff2f9f077fa40
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:269:9
[INFO] [stdout]   22:     0x589d90a3c477 - rustlings::exercise::test::test_clean::{{closure}}::hd80c831b94b8fad2
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:268:20
[INFO] [stdout]   23:     0x589d90a3a176 - core::ops::function::FnOnce::call_once::ha2f3823827ed3ea0
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x589d90a8555b - core::ops::function::FnOnce::call_once::h0c81d2c7e362685a
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x589d90a8555b - test::__rust_begin_short_backtrace::hc62049913de4b9c6
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x589d90a84772 - test::run_test_in_process::{{closure}}::h906d61461feea06d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:671:60
[INFO] [stdout]   27:     0x589d90a84772 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h962d8c24a3ec06f1
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x589d90a84772 - std::panicking::try::do_call::h88e304055018b07f
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x589d90a84772 - std::panicking::try::h34046f0780b49f58
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x589d90a84772 - std::panic::catch_unwind::h7d7ad4d133a51a76
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x589d90a84772 - test::run_test_in_process::h0871d7f888d1f41c
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x589d90a84772 - test::run_test::{{closure}}::h696f8114d8bae20e
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x589d90a47b64 - test::run_test::{{closure}}::h632082d0bd36bde1
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x589d90a47b64 - std::sys::backtrace::__rust_begin_short_backtrace::hf4db03c672d46ea2
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   35:     0x589d90a4b63a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h571ce7b4ea6fba0e
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x589d90a4b63a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h79478c2f2b0b4ed6
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x589d90a4b63a - std::panicking::try::do_call::hdfb524d8b1c5ea5d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x589d90a4b63a - std::panicking::try::hb57ee69084fa6c6a
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x589d90a4b63a - std::panic::catch_unwind::h1fcc7dadd90dd47c
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x589d90a4b63a - std::thread::Builder::spawn_unchecked_::{{closure}}::h7201710e36d47c29
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x589d90a4b63a - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha75b12b48ae5b3d2
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x589d90be8e1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h02517bb8c2b8e279
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1966:9
[INFO] [stdout]   43:     0x589d90be8e1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h760bb73d54d4c118
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1966:9
[INFO] [stdout]   44:     0x589d90be8e1b - std::sys::pal::unix::thread::Thread::new::thread_start::h91ff250566269b77
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   45:     0x74b9e06fdaa4 - <unknown>
[INFO] [stdout]   46:     0x74b9e078aa34 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[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/./rmetabF1Hch\"\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:     0x589d90be5442 - std::backtrace_rs::backtrace::libunwind::trace::h2bdbdb423cc746ad
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x589d90be5442 - std::backtrace_rs::backtrace::trace_unsynchronized::h876081fa48c0856a
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x589d90be5442 - std::sys::backtrace::_print_fmt::h744638bebbff2806
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x589d90be5442 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::he6e74fa9d0076b5d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x589d90c09dc3 - core::fmt::rt::Argument::fmt::hf88a3177e76af877
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x589d90c09dc3 - core::fmt::write::h6442196e41589522
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/fmt/mod.rs:1446:25
[INFO] [stdout]    6:     0x589d90be23a3 - std::io::default_write_fmt::h19b804dc75596022
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x589d90be23a3 - std::io::Write::write_fmt::h561df7c669043671
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/io/mod.rs:1914:13
[INFO] [stdout]    8:     0x589d90be5292 - std::sys::backtrace::BacktraceLock::print::h25e1ce4c29150054
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x589d90be6a7c - std::panicking::default_hook::{{closure}}::h36663bdaae83f2bb
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:300:22
[INFO] [stdout]   10:     0x589d90be68d2 - std::panicking::default_hook::hb9d7c40580cf1835
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x589d90a7fd64 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h53bdf3f1ac68020f
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1980:9
[INFO] [stdout]   12:     0x589d90a7fd64 - test::test_main_with_exit_callback::{{closure}}::h3ae9af1665ff5b7d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x589d90be7573 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha3a705c6ebc0f8fb
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1980:9
[INFO] [stdout]   14:     0x589d90be7573 - std::panicking::rust_panic_with_hook::h2d703857e4ba629f
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x589d90be722a - std::panicking::begin_panic_handler::{{closure}}::h53dd12a17ad784b1
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x589d90be5949 - std::sys::backtrace::__rust_end_short_backtrace::hf54a874920d38937
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x589d90be6ebd - __rustc[22d03d94d4da23d0]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x589d90c08830 - core::panicking::panic_fmt::hb74c170c8276d1d6
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x589d90c08c96 - core::result::unwrap_failed::hc1dbbc53e2530a6b
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/result.rs:1732:5
[INFO] [stdout]   20:     0x589d90a3d3d6 - core::result::Result<T,E>::unwrap::h85bbbee91d7c166b
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/result.rs:1137:23
[INFO] [stdout]   21:     0x589d90a3d3d6 - rustlings::exercise::test::test_exercise_with_output::h2bfb59f1419b18f7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:342:19
[INFO] [stdout]   22:     0x589d90a3d1d7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h8b67d9f4eafdb6ba
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:335:35
[INFO] [stdout]   23:     0x589d90a3a0a6 - core::ops::function::FnOnce::call_once::h04b5b90cc3cce8e4
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x589d90a8555b - core::ops::function::FnOnce::call_once::h0c81d2c7e362685a
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x589d90a8555b - test::__rust_begin_short_backtrace::hc62049913de4b9c6
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x589d90a84772 - test::run_test_in_process::{{closure}}::h906d61461feea06d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:671:60
[INFO] [stdout]   27:     0x589d90a84772 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h962d8c24a3ec06f1
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x589d90a84772 - std::panicking::try::do_call::h88e304055018b07f
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x589d90a84772 - std::panicking::try::h34046f0780b49f58
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x589d90a84772 - std::panic::catch_unwind::h7d7ad4d133a51a76
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x589d90a84772 - test::run_test_in_process::h0871d7f888d1f41c
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x589d90a84772 - test::run_test::{{closure}}::h696f8114d8bae20e
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x589d90a47b64 - test::run_test::{{closure}}::h632082d0bd36bde1
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x589d90a47b64 - std::sys::backtrace::__rust_begin_short_backtrace::hf4db03c672d46ea2
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   35:     0x589d90a4b63a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h571ce7b4ea6fba0e
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x589d90a4b63a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h79478c2f2b0b4ed6
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x589d90a4b63a - std::panicking::try::do_call::hdfb524d8b1c5ea5d
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x589d90a4b63a - std::panicking::try::hb57ee69084fa6c6a
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x589d90a4b63a - std::panic::catch_unwind::h1fcc7dadd90dd47c
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x589d90a4b63a - std::thread::Builder::spawn_unchecked_::{{closure}}::h7201710e36d47c29
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x589d90a4b63a - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha75b12b48ae5b3d2
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x589d90be8e1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h02517bb8c2b8e279
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1966:9
[INFO] [stdout]   43:     0x589d90be8e1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h760bb73d54d4c118
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/alloc/src/boxed.rs:1966:9
[INFO] [stdout]   44:     0x589d90be8e1b - std::sys::pal::unix::thread::Thread::new::thread_start::h91ff250566269b77
[INFO] [stdout]                                at /rustc/17092ad00ed8fe1e7f81a7e38238ff70779034b1/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   45:     0x74b9e06fdaa4 - <unknown>
[INFO] [stdout]   46:     0x74b9e078aa34 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[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 0.18s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "2205953e2fb8b754ad2dd6dbe48ffd98aed654f0582423b60f0122f203b78c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2205953e2fb8b754ad2dd6dbe48ffd98aed654f0582423b60f0122f203b78c6d", kill_on_drop: false }`
[INFO] [stdout] 2205953e2fb8b754ad2dd6dbe48ffd98aed654f0582423b60f0122f203b78c6d