[INFO] cloning repository https://github.com/mdmmn378/rustlings-solutions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdmmn378/rustlings-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdmmn378%2Frustlings-solutions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdmmn378%2Frustlings-solutions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a68d76ba33a17c97c94f296c7ff7b6cc936363f
[INFO] testing mdmmn378/rustlings-solutions against master#d7bd9cd469ff6871420007f091ef52fc32d2ca99 for pr-121417
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdmmn378%2Frustlings-solutions" "/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/mdmmn378/rustlings-solutions on toolchain d7bd9cd469ff6871420007f091ef52fc32d2ca99
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mdmmn378/rustlings-solutions
[INFO] finished tweaking git repo https://github.com/mdmmn378/rustlings-solutions
[INFO] tweaked toml for git repo https://github.com/mdmmn378/rustlings-solutions written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mdmmn378/rustlings-solutions 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" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing mdmmn378/rustlings-solutions against try#393ef12c970fbc7f294cd96c35cb76f9591bc1d6 for pr-121417
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdmmn378%2Frustlings-solutions" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdmmn378/rustlings-solutions on toolchain 393ef12c970fbc7f294cd96c35cb76f9591bc1d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mdmmn378/rustlings-solutions
[INFO] finished tweaking git repo https://github.com/mdmmn378/rustlings-solutions
[INFO] tweaked toml for git repo https://github.com/mdmmn378/rustlings-solutions written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mdmmn378/rustlings-solutions 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" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88e3d8eb3d467731ad739c0d120d98b9466719b452eb2b06c0dfc169f50d387c
[INFO] running `Command { std: "docker" "start" "-a" "88e3d8eb3d467731ad739c0d120d98b9466719b452eb2b06c0dfc169f50d387c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88e3d8eb3d467731ad739c0d120d98b9466719b452eb2b06c0dfc169f50d387c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88e3d8eb3d467731ad739c0d120d98b9466719b452eb2b06c0dfc169f50d387c", kill_on_drop: false }`
[INFO] [stdout] 88e3d8eb3d467731ad739c0d120d98b9466719b452eb2b06c0dfc169f50d387c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5c8dc136228bc7bf7bf4c9d4b0e75031c4f7231db757031aaac392366c38d99
[INFO] running `Command { std: "docker" "start" "-a" "e5c8dc136228bc7bf7bf4c9d4b0e75031c4f7231db757031aaac392366c38d99", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling console v0.15.0
[INFO] [stderr]    Compiling indicatif v0.16.2
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]    Compiling argh v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.89s
[INFO] running `Command { std: "docker" "inspect" "e5c8dc136228bc7bf7bf4c9d4b0e75031c4f7231db757031aaac392366c38d99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c8dc136228bc7bf7bf4c9d4b0e75031c4f7231db757031aaac392366c38d99", kill_on_drop: false }`
[INFO] [stdout] e5c8dc136228bc7bf7bf4c9d4b0e75031c4f7231db757031aaac392366c38d99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b739ae4896fe2c61a4b0929a01fa425e417a98c1d07d1e3ad21248a251922ff
[INFO] running `Command { std: "docker" "start" "-a" "0b739ae4896fe2c61a4b0929a01fa425e417a98c1d07d1e3ad21248a251922ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling predicates-tree v1.0.3
[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 v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.73s
[INFO] running `Command { std: "docker" "inspect" "0b739ae4896fe2c61a4b0929a01fa425e417a98c1d07d1e3ad21248a251922ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b739ae4896fe2c61a4b0929a01fa425e417a98c1d07d1e3ad21248a251922ff", kill_on_drop: false }`
[INFO] [stdout] 0b739ae4896fe2c61a4b0929a01fa425e417a98c1d07d1e3ad21248a251922ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e68150e9a41cb899d7951a7f335546402a26cb136307ae9f7d1b93db9d3e2896
[INFO] running `Command { std: "docker" "start" "-a" "e68150e9a41cb899d7951a7f335546402a26cb136307ae9f7d1b93db9d3e2896", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-77b0ddad1ddbf7fd)
[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:     0x55dd2faf3436 - std::backtrace_rs::backtrace::libunwind::trace::h5c10df0b519d962f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55dd2faf3436 - std::backtrace_rs::backtrace::trace_unsynchronized::h56122ec150da225d
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55dd2faf3436 - std::sys_common::backtrace::_print_fmt::h8e5f02953967e039
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55dd2faf3436 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h736f584a9f3f7d78
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55dd2fb1aebc - core::fmt::rt::Argument::fmt::h0eca9e37bebd875b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55dd2fb1aebc - core::fmt::write::h57172937379ae112
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55dd2faf0c4f - std::io::Write::write_fmt::h48e0063b56f825c3
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x55dd2faf31e4 - std::sys_common::backtrace::_print::ha0fb9ef3018dd67f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55dd2faf31e4 - std::sys_common::backtrace::print::h97bc00c4f471ee58
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55dd2faf4edb - std::panicking::default_hook::{{closure}}::had669b8c5eb766ef
[INFO] [stdout]   10:     0x55dd2faf4bad - std::panicking::default_hook::hee79edbbfe503541
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55dd2f986077 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbce7bcf7a5291663
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   12:     0x55dd2f986077 - test::test_main::{{closure}}::hbf7bf4b112234627
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55dd2faf5510 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h283d0ebbebe64c72
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   14:     0x55dd2faf5510 - std::panicking::rust_panic_with_hook::ha824647abef1aff2
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:786:13
[INFO] [stdout]   15:     0x55dd2faf5252 - std::panicking::begin_panic_handler::{{closure}}::h34c7493359eae8d6
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:660:13
[INFO] [stdout]   16:     0x55dd2faf3916 - std::sys_common::backtrace::__rust_end_short_backtrace::h8f5a11b92972236f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55dd2faf4f84 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:648:5
[INFO] [stdout]   18:     0x55dd2f93fe55 - core::panicking::panic_fmt::h4f7dd4ba7fa8b3c9
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55dd2f940433 - core::result::unwrap_failed::h797e1b8c8b568bfb
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/result.rs:1653:5
[INFO] [stdout]   20:     0x55dd2f94219b - core::result::Result<T,E>::unwrap::h26924302dfe780db
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/result.rs:1077:23
[INFO] [stdout]   21:     0x55dd2f945931 - rustlings::exercise::test::test_clean::hb6a33e5ebf80e637
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:269:9
[INFO] [stdout]   22:     0x55dd2f9458b7 - rustlings::exercise::test::test_clean::{{closure}}::h55115c4c5a49ed3c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:268:20
[INFO] [stdout]   23:     0x55dd2f9476c6 - core::ops::function::FnOnce::call_once::hbd58d2635994dabe
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55dd2f98b87f - core::ops::function::FnOnce::call_once::h263d60e66e97ae21
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55dd2f98b87f - test::__rust_begin_short_backtrace::hfd27401b46e2c35b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:620:18
[INFO] [stdout]   26:     0x55dd2f98a3f0 - test::run_test_in_process::{{closure}}::h6f15adc4862466a2
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:643:60
[INFO] [stdout]   27:     0x55dd2f98a3f0 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haaf085868eec590b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55dd2f98a3f0 - std::panicking::try::do_call::he863b9ffdd9dccd8
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:555:40
[INFO] [stdout]   29:     0x55dd2f98a3f0 - std::panicking::try::h00518ddc92157d69
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:519:19
[INFO] [stdout]   30:     0x55dd2f98a3f0 - std::panic::catch_unwind::ha54d881a3136a844
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55dd2f98a3f0 - test::run_test_in_process::he6969e4cdcd00ab9
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:643:27
[INFO] [stdout]   32:     0x55dd2f98a3f0 - test::run_test::{{closure}}::ha7bd2350e4208460
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:566:43
[INFO] [stdout]   33:     0x55dd2f952783 - test::run_test::{{closure}}::h7e4f6d8c61dc1fc5
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:594:41
[INFO] [stdout]   34:     0x55dd2f952783 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7971b3168cdfe030
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55dd2f95741f - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h940fea02fa91722e
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/thread/mod.rs:528:17
[INFO] [stdout]   36:     0x55dd2f95741f - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc9108612b0b55d6f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55dd2f95741f - std::panicking::try::do_call::h088487cc7181ed41
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:555:40
[INFO] [stdout]   38:     0x55dd2f95741f - std::panicking::try::hbe658ba86d10aeac
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:519:19
[INFO] [stdout]   39:     0x55dd2f95741f - std::panic::catch_unwind::hbcfe75becdd3312a
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55dd2f95741f - std::thread::Builder::spawn_unchecked_::{{closure}}::h5da9b0997b04a0b6
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/thread/mod.rs:527:30
[INFO] [stdout]   41:     0x55dd2f95741f - core::ops::function::FnOnce::call_once{{vtable.shim}}::h282e25baa8bce548
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55dd2faf9945 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7b00d7973698e306
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   43:     0x55dd2faf9945 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha210a4482bc8347c
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   44:     0x55dd2faf9945 - std::sys::pal::unix::thread::Thread::new::thread_start::h2e04f672130bcc99
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f876bc0aac3 - <unknown>
[INFO] [stdout]   46:     0x7f876bc9bbf4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[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/./rmetauWpRYN\"\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:     0x55dd2faf3436 - std::backtrace_rs::backtrace::libunwind::trace::h5c10df0b519d962f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55dd2faf3436 - std::backtrace_rs::backtrace::trace_unsynchronized::h56122ec150da225d
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55dd2faf3436 - std::sys_common::backtrace::_print_fmt::h8e5f02953967e039
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55dd2faf3436 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h736f584a9f3f7d78
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55dd2fb1aebc - core::fmt::rt::Argument::fmt::h0eca9e37bebd875b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55dd2fb1aebc - core::fmt::write::h57172937379ae112
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55dd2faf0c4f - std::io::Write::write_fmt::h48e0063b56f825c3
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x55dd2faf31e4 - std::sys_common::backtrace::_print::ha0fb9ef3018dd67f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55dd2faf31e4 - std::sys_common::backtrace::print::h97bc00c4f471ee58
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55dd2faf4edb - std::panicking::default_hook::{{closure}}::had669b8c5eb766ef
[INFO] [stdout]   10:     0x55dd2faf4bad - std::panicking::default_hook::hee79edbbfe503541
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55dd2f986077 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbce7bcf7a5291663
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   12:     0x55dd2f986077 - test::test_main::{{closure}}::hbf7bf4b112234627
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55dd2faf5510 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h283d0ebbebe64c72
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2030:9
[INFO] [stdout]   14:     0x55dd2faf5510 - std::panicking::rust_panic_with_hook::ha824647abef1aff2
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:786:13
[INFO] [stdout]   15:     0x55dd2faf5252 - std::panicking::begin_panic_handler::{{closure}}::h34c7493359eae8d6
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:660:13
[INFO] [stdout]   16:     0x55dd2faf3916 - std::sys_common::backtrace::__rust_end_short_backtrace::h8f5a11b92972236f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55dd2faf4f84 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:648:5
[INFO] [stdout]   18:     0x55dd2f93fe55 - core::panicking::panic_fmt::h4f7dd4ba7fa8b3c9
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55dd2f940433 - core::result::unwrap_failed::h797e1b8c8b568bfb
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/result.rs:1653:5
[INFO] [stdout]   20:     0x55dd2f942101 - core::result::Result<T,E>::unwrap::h01e30e63feca4323
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/result.rs:1077:23
[INFO] [stdout]   21:     0x55dd2f946623 - rustlings::exercise::test::test_exercise_with_output::h8597168c0332d559
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:342:19
[INFO] [stdout]   22:     0x55dd2f9464b7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::ha3188f69d9fe71c7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:335:35
[INFO] [stdout]   23:     0x55dd2f947706 - core::ops::function::FnOnce::call_once::hc7e1610ad82cab75
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55dd2f98b87f - core::ops::function::FnOnce::call_once::h263d60e66e97ae21
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55dd2f98b87f - test::__rust_begin_short_backtrace::hfd27401b46e2c35b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:620:18
[INFO] [stdout]   26:     0x55dd2f98a3f0 - test::run_test_in_process::{{closure}}::h6f15adc4862466a2
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:643:60
[INFO] [stdout]   27:     0x55dd2f98a3f0 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haaf085868eec590b
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55dd2f98a3f0 - std::panicking::try::do_call::he863b9ffdd9dccd8
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:555:40
[INFO] [stdout]   29:     0x55dd2f98a3f0 - std::panicking::try::h00518ddc92157d69
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:519:19
[INFO] [stdout]   30:     0x55dd2f98a3f0 - std::panic::catch_unwind::ha54d881a3136a844
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55dd2f98a3f0 - test::run_test_in_process::he6969e4cdcd00ab9
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:643:27
[INFO] [stdout]   32:     0x55dd2f98a3f0 - test::run_test::{{closure}}::ha7bd2350e4208460
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:566:43
[INFO] [stdout]   33:     0x55dd2f952783 - test::run_test::{{closure}}::h7e4f6d8c61dc1fc5
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/test/src/lib.rs:594:41
[INFO] [stdout]   34:     0x55dd2f952783 - std::sys_common::backtrace::__rust_begin_short_backtrace::h7971b3168cdfe030
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55dd2f95741f - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h940fea02fa91722e
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/thread/mod.rs:528:17
[INFO] [stdout]   36:     0x55dd2f95741f - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc9108612b0b55d6f
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55dd2f95741f - std::panicking::try::do_call::h088487cc7181ed41
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:555:40
[INFO] [stdout]   38:     0x55dd2f95741f - std::panicking::try::hbe658ba86d10aeac
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panicking.rs:519:19
[INFO] [stdout]   39:     0x55dd2f95741f - std::panic::catch_unwind::hbcfe75becdd3312a
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55dd2f95741f - std::thread::Builder::spawn_unchecked_::{{closure}}::h5da9b0997b04a0b6
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/thread/mod.rs:527:30
[INFO] [stdout]   41:     0x55dd2f95741f - core::ops::function::FnOnce::call_once{{vtable.shim}}::h282e25baa8bce548
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55dd2faf9945 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7b00d7973698e306
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   43:     0x55dd2faf9945 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha210a4482bc8347c
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/alloc/src/boxed.rs:2016:9
[INFO] [stdout]   44:     0x55dd2faf9945 - std::sys::pal::unix::thread::Thread::new::thread_start::h2e04f672130bcc99
[INFO] [stdout]                                at /rustc/393ef12c970fbc7f294cd96c35cb76f9591bc1d6/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f876bc0aac3 - <unknown>
[INFO] [stdout]   46:     0x7f876bc9bbf4 - __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 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "e68150e9a41cb899d7951a7f335546402a26cb136307ae9f7d1b93db9d3e2896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e68150e9a41cb899d7951a7f335546402a26cb136307ae9f7d1b93db9d3e2896", kill_on_drop: false }`
[INFO] [stdout] e68150e9a41cb899d7951a7f335546402a26cb136307ae9f7d1b93db9d3e2896