[INFO] cloning repository https://github.com/crabfishxy/rustlings-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crabfishxy/rustlings-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrabfishxy%2Frustlings-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrabfishxy%2Frustlings-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e313cffaaacc17716e0c9b95ef91b5520fa7824
[INFO] testing crabfishxy/rustlings-exercises against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrabfishxy%2Frustlings-exercises" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crabfishxy/rustlings-exercises on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crabfishxy/rustlings-exercises
[INFO] finished tweaking git repo https://github.com/crabfishxy/rustlings-exercises
[INFO] tweaked toml for git repo https://github.com/crabfishxy/rustlings-exercises written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/crabfishxy/rustlings-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d55e2f99976c5e43b77b31ef3baad347afd0885feb87b095654b60e4cea0540
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5d55e2f99976c5e43b77b31ef3baad347afd0885feb87b095654b60e4cea0540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d55e2f99976c5e43b77b31ef3baad347afd0885feb87b095654b60e4cea0540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d55e2f99976c5e43b77b31ef3baad347afd0885feb87b095654b60e4cea0540", kill_on_drop: false }`
[INFO] [stdout] 5d55e2f99976c5e43b77b31ef3baad347afd0885feb87b095654b60e4cea0540
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c35d54ddaa084d37b9e8e9d222c7136786a4e04447f7cb75ff9b1c1ff6b29bf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3c35d54ddaa084d37b9e8e9d222c7136786a4e04447f7cb75ff9b1c1ff6b29bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling argh_shared v0.1.4
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling lock_api v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling terminal_size v0.1.16
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling clicolors-control v1.0.1
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling number_prefix v0.2.8
[INFO] [stderr]    Compiling notify v4.0.16
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling console v0.7.7
[INFO] [stderr]    Compiling indicatif v0.10.3
[INFO] [stderr]    Compiling argh_derive v0.1.4
[INFO] [stderr]    Compiling argh v0.1.4
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling rustlings v4.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.26s
[INFO] running `Command { std: "docker" "inspect" "3c35d54ddaa084d37b9e8e9d222c7136786a4e04447f7cb75ff9b1c1ff6b29bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c35d54ddaa084d37b9e8e9d222c7136786a4e04447f7cb75ff9b1c1ff6b29bf", kill_on_drop: false }`
[INFO] [stdout] 3c35d54ddaa084d37b9e8e9d222c7136786a4e04447f7cb75ff9b1c1ff6b29bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dcbe435235a175ff00a6ef0c76c600d42d6be8f3ac66b0097ddbab91b9d11e5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0dcbe435235a175ff00a6ef0c76c600d42d6be8f3ac66b0097ddbab91b9d11e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling predicates v1.0.7
[INFO] [stderr]    Compiling assert_cmd v0.11.1
[INFO] [stderr]    Compiling rustlings v4.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.08s
[INFO] running `Command { std: "docker" "inspect" "0dcbe435235a175ff00a6ef0c76c600d42d6be8f3ac66b0097ddbab91b9d11e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dcbe435235a175ff00a6ef0c76c600d42d6be8f3ac66b0097ddbab91b9d11e5", kill_on_drop: false }`
[INFO] [stdout] 0dcbe435235a175ff00a6ef0c76c600d42d6be8f3ac66b0097ddbab91b9d11e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f604fe3ad5e395784242fad0c443b127015560e9c193f44fc80b80080393e48f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f604fe3ad5e395784242fad0c443b127015560e9c193f44fc80b80080393e48f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustlings-dbb390f64741c71d)
[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] [stderr] error: test failed, to rerun pass '--bin rustlings'
[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:     0x5627c7cfc560 - std::backtrace_rs::backtrace::libunwind::trace::h99dbb39dca18857d
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x5627c7cfc560 - std::backtrace_rs::backtrace::trace_unsynchronized::h832861927e9cfedf
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5627c7cfc560 - std::sys_common::backtrace::_print_fmt::h3d18154c77dcf310
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x5627c7cfc560 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he312f4ad5b9bb346
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x5627c7d1f24c - core::fmt::write::h9a6d9c74526a6c1b
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/fmt/mod.rs:1115:17
[INFO] [stdout]    5:     0x5627c7cf94a5 - std::io::Write::write_fmt::h65d36b96410d80d7
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/io/mod.rs:1665:15
[INFO] [stdout]    6:     0x5627c7cfe6db - std::sys_common::backtrace::_print::h65d996766de40da4
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x5627c7cfe6db - std::sys_common::backtrace::print::h40df9727e635f303
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x5627c7cfe6db - std::panicking::default_hook::{{closure}}::hd2da4327dea91a51
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x5627c7cfe1ec - std::panicking::default_hook::h3d55120ad6ada158
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x5627c7cfeda4 - std::panicking::rust_panic_with_hook::hf85dd0bb545e3b55
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x5627c7cfe887 - std::panicking::begin_panic_handler::{{closure}}::h736ae969434da9fa
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x5627c7cfca3c - std::sys_common::backtrace::__rust_end_short_backtrace::h6133bb80b1d6c3e0
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x5627c7cfe7e9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x5627c7b0b8c1 - core::panicking::panic_fmt::hcf5f6d96e1dd7099
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x5627c7b0b9b3 - core::result::unwrap_failed::he898b02f57993c42
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/result.rs:1599:5
[INFO] [stdout]   16:     0x5627c7b14dce - core::result::Result<T,E>::unwrap::h690802ec5f968aff
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/result.rs:1281:23
[INFO] [stdout]   17:     0x5627c7b100a3 - rustlings::exercise::test::test_clean::hde56b1fda0854185
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:270:9
[INFO] [stdout]   18:     0x5627c7b1005a - rustlings::exercise::test::test_clean::{{closure}}::h9a63c46d75fced4c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:269:5
[INFO] [stdout]   19:     0x5627c7b1963e - core::ops::function::FnOnce::call_once::h018f17ccbcf4b047
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x5627c7b56023 - core::ops::function::FnOnce::call_once::h227fa683a5745bd3
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x5627c7b56023 - test::__rust_begin_short_backtrace::h3a193bd570ada00a
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:578:5
[INFO] [stdout]   22:     0x5627c7b54a98 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h262d2f411717179a
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   23:     0x5627c7b54a98 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfec00caec3e52a7b
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:347:9
[INFO] [stdout]   24:     0x5627c7b54a98 - std::panicking::try::do_call::ha5f42e76ffda569d
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:401:40
[INFO] [stdout]   25:     0x5627c7b54a98 - std::panicking::try::h53f36df0935b9500
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:365:19
[INFO] [stdout]   26:     0x5627c7b54a98 - std::panic::catch_unwind::h5a497f74b0ce006f
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:434:14
[INFO] [stdout]   27:     0x5627c7b54a98 - test::run_test_in_process::hab0aead337f48a88
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:601:18
[INFO] [stdout]   28:     0x5627c7b54a98 - test::run_test::run_test_inner::{{closure}}::h632c383164d4cba2
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:493:39
[INFO] [stdout]   29:     0x5627c7b2321d - test::run_test::run_test_inner::{{closure}}::h7c4b3612891a4b58
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:520:37
[INFO] [stdout]   30:     0x5627c7b2321d - std::sys_common::backtrace::__rust_begin_short_backtrace::habf7d8a08419d00e
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   31:     0x5627c7b27948 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h3acba502e2068204
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/thread/mod.rs:476:17
[INFO] [stdout]   32:     0x5627c7b27948 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h526ef819c1964a35
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:347:9
[INFO] [stdout]   33:     0x5627c7b27948 - std::panicking::try::do_call::hc0b5663d6373cec8
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:401:40
[INFO] [stdout]   34:     0x5627c7b27948 - std::panicking::try::ha9007ede9d35dcd6
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:365:19
[INFO] [stdout]   35:     0x5627c7b27948 - std::panic::catch_unwind::hf60d56329ebbb81c
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:434:14
[INFO] [stdout]   36:     0x5627c7b27948 - std::thread::Builder::spawn_unchecked::{{closure}}::hb1722d498f4ce777
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/thread/mod.rs:475:30
[INFO] [stdout]   37:     0x5627c7b27948 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h15eb01325730c962
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x5627c7d03c07 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h09f167e08fc945ff
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   39:     0x5627c7d03c07 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf814fe85eeb118e0
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   40:     0x5627c7d03c07 - std::sys::unix::thread::Thread::new::thread_start::hb71b17934c5f5e68
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys/unix/thread.rs:91:17
[INFO] [stdout]   41:     0x7fbd3ac92609 - start_thread
[INFO] [stdout]   42:     0x7fbd3ade9293 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[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_10_ThreadId3.4yb83bihoeyrwl19.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:     0x5627c7cfc560 - std::backtrace_rs::backtrace::libunwind::trace::h99dbb39dca18857d
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x5627c7cfc560 - std::backtrace_rs::backtrace::trace_unsynchronized::h832861927e9cfedf
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5627c7cfc560 - std::sys_common::backtrace::_print_fmt::h3d18154c77dcf310
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x5627c7cfc560 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he312f4ad5b9bb346
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x5627c7d1f24c - core::fmt::write::h9a6d9c74526a6c1b
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/fmt/mod.rs:1115:17
[INFO] [stdout]    5:     0x5627c7cf94a5 - std::io::Write::write_fmt::h65d36b96410d80d7
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/io/mod.rs:1665:15
[INFO] [stdout]    6:     0x5627c7cfe6db - std::sys_common::backtrace::_print::h65d996766de40da4
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x5627c7cfe6db - std::sys_common::backtrace::print::h40df9727e635f303
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x5627c7cfe6db - std::panicking::default_hook::{{closure}}::hd2da4327dea91a51
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x5627c7cfe1ec - std::panicking::default_hook::h3d55120ad6ada158
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x5627c7cfeda4 - std::panicking::rust_panic_with_hook::hf85dd0bb545e3b55
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x5627c7cfe887 - std::panicking::begin_panic_handler::{{closure}}::h736ae969434da9fa
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x5627c7cfca3c - std::sys_common::backtrace::__rust_end_short_backtrace::h6133bb80b1d6c3e0
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x5627c7cfe7e9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x5627c7b0b8c1 - core::panicking::panic_fmt::hcf5f6d96e1dd7099
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x5627c7b0b9b3 - core::result::unwrap_failed::he898b02f57993c42
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/result.rs:1599:5
[INFO] [stdout]   16:     0x5627c7b14e73 - core::result::Result<T,E>::unwrap::h85ac143cbb95b95a
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/result.rs:1281:23
[INFO] [stdout]   17:     0x5627c7b10cdc - rustlings::exercise::test::test_exercise_with_output::h394cc1cce9223b27
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:343:19
[INFO] [stdout]   18:     0x5627c7b10b9a - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h9ed720637229f265
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:336:5
[INFO] [stdout]   19:     0x5627c7b1971e - core::ops::function::FnOnce::call_once::h92d6e103d75788c5
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x5627c7b56023 - core::ops::function::FnOnce::call_once::h227fa683a5745bd3
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x5627c7b56023 - test::__rust_begin_short_backtrace::h3a193bd570ada00a
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:578:5
[INFO] [stdout]   22:     0x5627c7b54a98 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h262d2f411717179a
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   23:     0x5627c7b54a98 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfec00caec3e52a7b
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:347:9
[INFO] [stdout]   24:     0x5627c7b54a98 - std::panicking::try::do_call::ha5f42e76ffda569d
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:401:40
[INFO] [stdout]   25:     0x5627c7b54a98 - std::panicking::try::h53f36df0935b9500
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:365:19
[INFO] [stdout]   26:     0x5627c7b54a98 - std::panic::catch_unwind::h5a497f74b0ce006f
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:434:14
[INFO] [stdout]   27:     0x5627c7b54a98 - test::run_test_in_process::hab0aead337f48a88
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:601:18
[INFO] [stdout]   28:     0x5627c7b54a98 - test::run_test::run_test_inner::{{closure}}::h632c383164d4cba2
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:493:39
[INFO] [stdout]   29:     0x5627c7b2321d - test::run_test::run_test_inner::{{closure}}::h7c4b3612891a4b58
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/test/src/lib.rs:520:37
[INFO] [stdout]   30:     0x5627c7b2321d - std::sys_common::backtrace::__rust_begin_short_backtrace::habf7d8a08419d00e
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   31:     0x5627c7b27948 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h3acba502e2068204
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/thread/mod.rs:476:17
[INFO] [stdout]   32:     0x5627c7b27948 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h526ef819c1964a35
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:347:9
[INFO] [stdout]   33:     0x5627c7b27948 - std::panicking::try::do_call::hc0b5663d6373cec8
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:401:40
[INFO] [stdout]   34:     0x5627c7b27948 - std::panicking::try::ha9007ede9d35dcd6
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panicking.rs:365:19
[INFO] [stdout]   35:     0x5627c7b27948 - std::panic::catch_unwind::hf60d56329ebbb81c
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/panic.rs:434:14
[INFO] [stdout]   36:     0x5627c7b27948 - std::thread::Builder::spawn_unchecked::{{closure}}::hb1722d498f4ce777
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/thread/mod.rs:475:30
[INFO] [stdout]   37:     0x5627c7b27948 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h15eb01325730c962
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x5627c7d03c07 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h09f167e08fc945ff
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   39:     0x5627c7d03c07 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf814fe85eeb118e0
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   40:     0x5627c7d03c07 - std::sys::unix::thread::Thread::new::thread_start::hb71b17934c5f5e68
[INFO] [stdout]                                at /rustc/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/library/std/src/sys/unix/thread.rs:91:17
[INFO] [stdout]   41:     0x7fbd3ac92609 - start_thread
[INFO] [stdout]   42:     0x7fbd3ade9293 - clone
[INFO] [stdout]   43:                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 0.14s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f604fe3ad5e395784242fad0c443b127015560e9c193f44fc80b80080393e48f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f604fe3ad5e395784242fad0c443b127015560e9c193f44fc80b80080393e48f", kill_on_drop: false }`
[INFO] [stdout] f604fe3ad5e395784242fad0c443b127015560e9c193f44fc80b80080393e48f