[INFO] cloning repository https://github.com/tydanny/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tydanny/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftydanny%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftydanny%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75afa6a4372d94d41f7f096c39d3ccd7633066e8
[INFO] testing tydanny/rustlings against master#2fe50cd72c476ebacdedb14893e9632b4de961c2 for pr-116088-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftydanny%2Frustlings" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tydanny/rustlings on toolchain 2fe50cd72c476ebacdedb14893e9632b4de961c2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tydanny/rustlings
[INFO] finished tweaking git repo https://github.com/tydanny/rustlings
[INFO] tweaked toml for git repo https://github.com/tydanny/rustlings written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tydanny/rustlings 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" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-xid v0.2.2
[INFO] [stderr]   Downloaded lazycell v1.3.0
[INFO] [stderr]   Downloaded same-file v1.0.6
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded fsevent-sys v2.0.1
[INFO] [stderr]   Downloaded argh_shared v0.1.5
[INFO] [stderr]   Downloaded encode_unicode v0.3.6
[INFO] [stderr]   Downloaded mio-extras v2.0.6
[INFO] [stderr]   Downloaded number_prefix v0.4.0
[INFO] [stderr]   Downloaded winapi-util v0.1.5
[INFO] [stderr]   Downloaded filetime v0.2.15
[INFO] [stderr]   Downloaded home v0.5.3
[INFO] [stderr]   Downloaded unicode-width v0.1.8
[INFO] [stderr]   Downloaded inotify v0.7.1
[INFO] [stderr]   Downloaded escargot v0.4.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.28
[INFO] [stderr]   Downloaded serde v1.0.129
[INFO] [stderr]   Downloaded difference v2.0.0
[INFO] [stderr]   Downloaded regex v1.5.5
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded serde_json v1.0.81
[INFO] [stderr]   Downloaded syn v1.0.75
[INFO] [stderr]   Downloaded libc v0.2.100
[INFO] [stderr]   Downloaded regex-syntax v0.6.25
[INFO] [stderr]   Downloaded unicode-segmentation v1.8.0
[INFO] [stderr]   Downloaded serde_derive v1.0.129
[INFO] [stderr]   Downloaded toml v0.5.9
[INFO] [stderr]   Downloaded glob v0.3.0
[INFO] [stderr]   Downloaded ryu v1.0.5
[INFO] [stderr]   Downloaded redox_syscall v0.2.10
[INFO] [stderr]   Downloaded log v0.4.14
[INFO] [stderr]   Downloaded indicatif v0.16.2
[INFO] [stderr]   Downloaded notify v4.0.17
[INFO] [stderr]   Downloaded num-traits v0.2.14
[INFO] [stderr]   Downloaded memchr v2.4.1
[INFO] [stderr]   Downloaded aho-corasick v0.7.18
[INFO] [stderr]   Downloaded argh_derive v0.1.5
[INFO] [stderr]   Downloaded argh v0.1.5
[INFO] [stderr]   Downloaded assert_cmd v0.11.1
[INFO] [stderr]   Downloaded once_cell v1.10.0
[INFO] [stderr]   Downloaded autocfg v1.0.1
[INFO] [stderr]   Downloaded predicates-tree v1.0.3
[INFO] [stderr]   Downloaded treeline v0.1.0
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded terminal_size v0.1.17
[INFO] [stderr]   Downloaded net2 v0.2.37
[INFO] [stderr]   Downloaded predicates-core v1.0.2
[INFO] [stderr]   Downloaded itoa v1.0.2
[INFO] [stderr]   Downloaded predicates v1.0.8
[INFO] [stderr]   Downloaded quote v1.0.9
[INFO] [stderr]   Downloaded console v0.15.0
[INFO] [stderr]   Downloaded miow v0.2.2
[INFO] [stderr]   Downloaded walkdir v2.3.2
[INFO] [stderr]   Downloaded fuchsia-zircon v0.3.3
[INFO] [stderr]   Downloaded float-cmp v0.8.0
[INFO] [stderr]   Downloaded slab v0.4.4
[INFO] [stderr]   Downloaded fsevent v0.4.0
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.3.3
[INFO] [stderr]   Downloaded inotify-sys v0.1.5
[INFO] [stderr]   Downloaded normalize-line-endings v0.3.0
[INFO] [stderr]   Downloaded ws2_32-sys v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb
[INFO] running `Command { std: "docker" "start" "-a" "b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb", kill_on_drop: false }`
[INFO] [stdout] b865904a51b9c0c8d91fb2543d2aadfd6ad6cf9e2a2cb0c9b3022be9375103fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9
[INFO] running `Command { std: "docker" "start" "-a" "3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.129
[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 bitflags v1.3.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling console v0.15.0
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]    Compiling indicatif v0.16.2
[INFO] [stderr]    Compiling argh v0.1.5
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.42s
[INFO] running `Command { std: "docker" "inspect" "3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9", kill_on_drop: false }`
[INFO] [stdout] 3f65c99b5eeff7f911c64a565c335c112c4156bae4ddbe378482764c97e917a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7
[INFO] running `Command { std: "docker" "start" "-a" "e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7", 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 treeline v0.1.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[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 [unoptimized + debuginfo] target(s) in 4.75s
[INFO] running `Command { std: "docker" "inspect" "e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7", kill_on_drop: false }`
[INFO] [stdout] e79d52bdc4403b906bb4587f1b99b09e779506fa34a8f15198bfe8ca68c232b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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" "+2fe50cd72c476ebacdedb14893e9632b4de961c2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1
[INFO] running `Command { std: "docker" "start" "-a" "6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-77b0ddad1ddbf7fd)
[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:     0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::libunwind::trace::hd7a456af414d63de
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::trace_unsynchronized::h64867240ea973bd5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ef0a9eb7b6 - std::sys_common::backtrace::_print_fmt::h2808b222ea4d26d0
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55ef0a9eb7b6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h03f74bc036e21c80
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55ef0aa148a0 - core::fmt::rt::Argument::fmt::h8121cad32ccb67f1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55ef0aa148a0 - core::fmt::write::hba6738a49cae548f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55ef0a9e932f - std::io::Write::write_fmt::h998dc49ddc9bbda8
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55ef0a9eb594 - std::sys_common::backtrace::_print::h12e2732351687df5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55ef0a9eb594 - std::sys_common::backtrace::print::h3977ff4fa70d37c3
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55ef0a9ed307 - std::panicking::default_hook::{{closure}}::h3649b42de801f190
[INFO] [stdout]   10:     0x55ef0a9ecfed - std::panicking::default_hook::h3fb7ccab350417f5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55ef0a86cfe7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcac2ee49c7d5205e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55ef0a86cfe7 - test::test_main::{{closure}}::ha6dc19c93a11f2d1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55ef0a9ed926 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h29b8e785b856bb23
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55ef0a9ed926 - std::panicking::rust_panic_with_hook::h5efc89ef996de810
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55ef0a9ed672 - std::panicking::begin_panic_handler::{{closure}}::h6289f51ae1ae9efc
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55ef0a9ebcb6 - std::sys_common::backtrace::__rust_end_short_backtrace::h9f143e0a9d826e65
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55ef0a9ed3d0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55ef0a8262a5 - core::panicking::panic_fmt::h5b9d04f36fd68862
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55ef0a826883 - core::result::unwrap_failed::h51ff08a68f0aec4a
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1649:5
[INFO] [stdout]   20:     0x55ef0a82845b - core::result::Result<T,E>::unwrap::h55968752bd23e96f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1073:23
[INFO] [stdout]   21:     0x55ef0a82d401 - rustlings::exercise::test::test_clean::habe8eaa378259128
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:269:9
[INFO] [stdout]   22:     0x55ef0a82d387 - rustlings::exercise::test::test_clean::{{closure}}::h32b1e158de767298
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:268:20
[INFO] [stdout]   23:     0x55ef0a82f876 - core::ops::function::FnOnce::call_once::h8639849da792536a
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ef0a8727ef - core::ops::function::FnOnce::call_once::h547df4cc4781c42c
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55ef0a8727ef - test::__rust_begin_short_backtrace::h0751f8da0df8afc9
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x55ef0a871641 - test::run_test_in_process::{{closure}}::h08b7e2b944f5d3bf
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x55ef0a871641 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4eabe934da23f6d3
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55ef0a871641 - std::panicking::try::do_call::h8bce2a819a83d75f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x55ef0a871641 - std::panicking::try::h8d0ad43ca1e9dfe4
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x55ef0a871641 - std::panic::catch_unwind::h80c407981483a27f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55ef0a871641 - test::run_test_in_process::h34f4f1cf26878dcc
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x55ef0a871641 - test::run_test::{{closure}}::hf98423759bd4e4de
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x55ef0a8389d6 - test::run_test::{{closure}}::h31f9214a9865a468
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x55ef0a8389d6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h97eebf57e64e4a3e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h10343cc6e645d5a7
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55ef0a83dad7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7676f5746d51f304
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55ef0a83dad7 - std::panicking::try::do_call::h76c69ddb47b6692d
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x55ef0a83dad7 - std::panicking::try::h231004126786543e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x55ef0a83dad7 - std::panic::catch_unwind::h519133dc1360745e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h7c96b1538d88533f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55ef0a83dad7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h90e3a916fbad66da
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ef0a9f2565 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12c26c313019b755
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x55ef0a9f2565 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3a7c22937eaa10d1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55ef0a9f2565 - std::sys::unix::thread::Thread::new::thread_start::h1ce303acc71f2e7d
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f53da99cac3 - <unknown>
[INFO] [stdout]   46:     0x7f53daa2dbf4 - __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/./rmeta14jhHB\"\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:     0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::libunwind::trace::hd7a456af414d63de
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55ef0a9eb7b6 - std::backtrace_rs::backtrace::trace_unsynchronized::h64867240ea973bd5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55ef0a9eb7b6 - std::sys_common::backtrace::_print_fmt::h2808b222ea4d26d0
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55ef0a9eb7b6 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h03f74bc036e21c80
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55ef0aa148a0 - core::fmt::rt::Argument::fmt::h8121cad32ccb67f1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55ef0aa148a0 - core::fmt::write::hba6738a49cae548f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55ef0a9e932f - std::io::Write::write_fmt::h998dc49ddc9bbda8
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55ef0a9eb594 - std::sys_common::backtrace::_print::h12e2732351687df5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55ef0a9eb594 - std::sys_common::backtrace::print::h3977ff4fa70d37c3
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55ef0a9ed307 - std::panicking::default_hook::{{closure}}::h3649b42de801f190
[INFO] [stdout]   10:     0x55ef0a9ecfed - std::panicking::default_hook::h3fb7ccab350417f5
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55ef0a86cfe7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcac2ee49c7d5205e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55ef0a86cfe7 - test::test_main::{{closure}}::ha6dc19c93a11f2d1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55ef0a9ed926 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h29b8e785b856bb23
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55ef0a9ed926 - std::panicking::rust_panic_with_hook::h5efc89ef996de810
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55ef0a9ed672 - std::panicking::begin_panic_handler::{{closure}}::h6289f51ae1ae9efc
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55ef0a9ebcb6 - std::sys_common::backtrace::__rust_end_short_backtrace::h9f143e0a9d826e65
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55ef0a9ed3d0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55ef0a8262a5 - core::panicking::panic_fmt::h5b9d04f36fd68862
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55ef0a826883 - core::result::unwrap_failed::h51ff08a68f0aec4a
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1649:5
[INFO] [stdout]   20:     0x55ef0a828301 - core::result::Result<T,E>::unwrap::h0777c05b464ca65b
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/result.rs:1073:23
[INFO] [stdout]   21:     0x55ef0a82e0ec - rustlings::exercise::test::test_exercise_with_output::h160adf85eb3b4c04
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:342:19
[INFO] [stdout]   22:     0x55ef0a82df87 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hb7a499237334baf6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:335:35
[INFO] [stdout]   23:     0x55ef0a82f806 - core::ops::function::FnOnce::call_once::h3f8effdb9583f011
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55ef0a8727ef - core::ops::function::FnOnce::call_once::h547df4cc4781c42c
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55ef0a8727ef - test::__rust_begin_short_backtrace::h0751f8da0df8afc9
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x55ef0a871641 - test::run_test_in_process::{{closure}}::h08b7e2b944f5d3bf
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x55ef0a871641 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4eabe934da23f6d3
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55ef0a871641 - std::panicking::try::do_call::h8bce2a819a83d75f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x55ef0a871641 - std::panicking::try::h8d0ad43ca1e9dfe4
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x55ef0a871641 - std::panic::catch_unwind::h80c407981483a27f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55ef0a871641 - test::run_test_in_process::h34f4f1cf26878dcc
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x55ef0a871641 - test::run_test::{{closure}}::hf98423759bd4e4de
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x55ef0a8389d6 - test::run_test::{{closure}}::h31f9214a9865a468
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x55ef0a8389d6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h97eebf57e64e4a3e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h10343cc6e645d5a7
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55ef0a83dad7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7676f5746d51f304
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55ef0a83dad7 - std::panicking::try::do_call::h76c69ddb47b6692d
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x55ef0a83dad7 - std::panicking::try::h231004126786543e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x55ef0a83dad7 - std::panic::catch_unwind::h519133dc1360745e
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55ef0a83dad7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h7c96b1538d88533f
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55ef0a83dad7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h90e3a916fbad66da
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55ef0a9f2565 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12c26c313019b755
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x55ef0a9f2565 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3a7c22937eaa10d1
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55ef0a9f2565 - std::sys::unix::thread::Thread::new::thread_start::h1ce303acc71f2e7d
[INFO] [stdout]                                at /rustc/2fe50cd72c476ebacdedb14893e9632b4de961c2/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f53da99cac3 - <unknown>
[INFO] [stdout]   46:     0x7f53daa2dbf4 - __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 0.10s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1", kill_on_drop: false }`
[INFO] [stdout] 6bd10779c571e27c5d8101bb65c47db929e9b672fb947da00425409332bfe7a1
[INFO] testing tydanny/rustlings against try#9c1665de5d324fe858dc15371578d6f928bfc123 for pr-116088-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftydanny%2Frustlings" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tydanny/rustlings on toolchain 9c1665de5d324fe858dc15371578d6f928bfc123
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c1665de5d324fe858dc15371578d6f928bfc123" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tydanny/rustlings
[INFO] finished tweaking git repo https://github.com/tydanny/rustlings
[INFO] tweaked toml for git repo https://github.com/tydanny/rustlings written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tydanny/rustlings 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" "+9c1665de5d324fe858dc15371578d6f928bfc123" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+9c1665de5d324fe858dc15371578d6f928bfc123" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 344327ff76ee43089ea0d38d45284d4f521e7f3f9cf486e34e7653d26cf1df85
[INFO] running `Command { std: "docker" "start" "-a" "344327ff76ee43089ea0d38d45284d4f521e7f3f9cf486e34e7653d26cf1df85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "344327ff76ee43089ea0d38d45284d4f521e7f3f9cf486e34e7653d26cf1df85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "344327ff76ee43089ea0d38d45284d4f521e7f3f9cf486e34e7653d26cf1df85", kill_on_drop: false }`
[INFO] [stdout] 344327ff76ee43089ea0d38d45284d4f521e7f3f9cf486e34e7653d26cf1df85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+9c1665de5d324fe858dc15371578d6f928bfc123" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0073c71bf9459122c13304c622a779004f7bb555e99fb8a8b576124c5143086d
[INFO] running `Command { std: "docker" "start" "-a" "0073c71bf9459122c13304c622a779004f7bb555e99fb8a8b576124c5143086d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling number_prefix v0.4.0
[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 toml v0.5.9
[INFO] [stderr]    Compiling rustlings v5.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.33s
[INFO] running `Command { std: "docker" "inspect" "0073c71bf9459122c13304c622a779004f7bb555e99fb8a8b576124c5143086d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0073c71bf9459122c13304c622a779004f7bb555e99fb8a8b576124c5143086d", kill_on_drop: false }`
[INFO] [stdout] 0073c71bf9459122c13304c622a779004f7bb555e99fb8a8b576124c5143086d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+9c1665de5d324fe858dc15371578d6f928bfc123" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5824101f5215e89157ad299cf0e0aaf578ad2299012045c54e4f97087f7e879
[INFO] running `Command { std: "docker" "start" "-a" "c5824101f5215e89157ad299cf0e0aaf578ad2299012045c54e4f97087f7e879", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling escargot v0.4.0
[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 [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `Command { std: "docker" "inspect" "c5824101f5215e89157ad299cf0e0aaf578ad2299012045c54e4f97087f7e879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5824101f5215e89157ad299cf0e0aaf578ad2299012045c54e4f97087f7e879", kill_on_drop: false }`
[INFO] [stdout] c5824101f5215e89157ad299cf0e0aaf578ad2299012045c54e4f97087f7e879
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+9c1665de5d324fe858dc15371578d6f928bfc123" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6b6cf268a363a555cefaedd4cd553314ac9de257e52a0082e4cf8ecf13027310
[INFO] running `Command { std: "docker" "start" "-a" "6b6cf268a363a555cefaedd4cd553314ac9de257e52a0082e4cf8ecf13027310", kill_on_drop: false }`
[INFO] [stderr]     Finished test [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:     0x564dd8084086 - std::backtrace_rs::backtrace::libunwind::trace::h91c8d54ed99a4c55
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x564dd8084086 - std::backtrace_rs::backtrace::trace_unsynchronized::h715a9230a8fcfb93
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x564dd8084086 - std::sys_common::backtrace::_print_fmt::hbab9610f7b3c51a4
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x564dd8084086 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h56c55e88977fc622
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x564dd80ad170 - core::fmt::rt::Argument::fmt::heebe33f1e8c6d0f8
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x564dd80ad170 - core::fmt::write::h73e5b8b14759e609
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x564dd8081c8f - std::io::Write::write_fmt::hc6810e91f58091ef
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x564dd8083e64 - std::sys_common::backtrace::_print::h835c23092b2371d8
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x564dd8083e64 - std::sys_common::backtrace::print::h220bc735ac93468b
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x564dd8085bd7 - std::panicking::default_hook::{{closure}}::h13e5c81c71823f66
[INFO] [stdout]   10:     0x564dd80858bd - std::panicking::default_hook::h49decadd8f3385a7
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x564dd7f04bf7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h948fb53b8b08f768
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x564dd7f04bf7 - test::test_main::{{closure}}::hb4f3e5071c7080f1
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x564dd80861f6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcd5802f61674126e
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x564dd80861f6 - std::panicking::rust_panic_with_hook::hd27f6b49984c37db
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x564dd8085f42 - std::panicking::begin_panic_handler::{{closure}}::h3cbc731df9d96e4d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x564dd8084586 - std::sys_common::backtrace::__rust_end_short_backtrace::hc27809f103d211f0
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x564dd8085ca0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x564dd7eba2a5 - core::panicking::panic_fmt::ha729e53058547cad
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x564dd7eba883 - core::result::unwrap_failed::h94a3ea7a3449b5ea
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/result.rs:1649:5
[INFO] [stdout]   20:     0x564dd7ebc2fb - core::result::Result<T,E>::unwrap::hd4898f97c31b0004
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/result.rs:1073:23
[INFO] [stdout]   21:     0x564dd7ec1401 - rustlings::exercise::test::test_clean::h450b738ef4eae590
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:269:9
[INFO] [stdout]   22:     0x564dd7ec1387 - rustlings::exercise::test::test_clean::{{closure}}::hc812ef90ad88a93d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:268:20
[INFO] [stdout]   23:     0x564dd7ec3896 - core::ops::function::FnOnce::call_once::h9310ae5a3c5281a6
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x564dd7f0a4cf - core::ops::function::FnOnce::call_once::hc0fe9d49e29a8147
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x564dd7f0a4cf - test::__rust_begin_short_backtrace::haa61ceb70470fb3e
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x564dd7f09251 - test::run_test_in_process::{{closure}}::h8585fae9636dddb2
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x564dd7f09251 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb7a42bf7326d90ad
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x564dd7f09251 - std::panicking::try::do_call::h9063f39381e190d5
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x564dd7f09251 - std::panicking::try::h1e696c55679552ba
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x564dd7f09251 - std::panic::catch_unwind::ha638c57cde7bcebd
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x564dd7f09251 - test::run_test_in_process::h87d13783dd3d2492
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x564dd7f09251 - test::run_test::{{closure}}::hbfb7402b4584e0f1
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x564dd7ed06f6 - test::run_test::{{closure}}::h6b5a8e7824747db3
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x564dd7ed06f6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd4768720b288897d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x564dd7ed5757 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha03eb79d3e2ff5a3
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x564dd7ed5757 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hec8051eee7bc5c29
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x564dd7ed5757 - std::panicking::try::do_call::ha639d9c4a070100b
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x564dd7ed5757 - std::panicking::try::ha45df3d3f6ed1370
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x564dd7ed5757 - std::panic::catch_unwind::hac44f4c50a87c82d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x564dd7ed5757 - std::thread::Builder::spawn_unchecked_::{{closure}}::hfecb7080eaed2a35
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x564dd7ed5757 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4739d9410aed0b36
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x564dd808ae35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf07182c172025753
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x564dd808ae35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hffcc280980d6bb6c
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x564dd808ae35 - std::sys::unix::thread::Thread::new::thread_start::h35e8c1dabb0282bb
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7ff3afa8dac3 - <unknown>
[INFO] [stdout]   46:     0x7ff3afb1ebf4 - __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/./rmetaJFmJtp\"\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:     0x564dd8084086 - std::backtrace_rs::backtrace::libunwind::trace::h91c8d54ed99a4c55
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x564dd8084086 - std::backtrace_rs::backtrace::trace_unsynchronized::h715a9230a8fcfb93
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x564dd8084086 - std::sys_common::backtrace::_print_fmt::hbab9610f7b3c51a4
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x564dd8084086 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h56c55e88977fc622
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x564dd80ad170 - core::fmt::rt::Argument::fmt::heebe33f1e8c6d0f8
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x564dd80ad170 - core::fmt::write::h73e5b8b14759e609
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x564dd8081c8f - std::io::Write::write_fmt::hc6810e91f58091ef
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x564dd8083e64 - std::sys_common::backtrace::_print::h835c23092b2371d8
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x564dd8083e64 - std::sys_common::backtrace::print::h220bc735ac93468b
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x564dd8085bd7 - std::panicking::default_hook::{{closure}}::h13e5c81c71823f66
[INFO] [stdout]   10:     0x564dd80858bd - std::panicking::default_hook::h49decadd8f3385a7
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x564dd7f04bf7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h948fb53b8b08f768
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x564dd7f04bf7 - test::test_main::{{closure}}::hb4f3e5071c7080f1
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x564dd80861f6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcd5802f61674126e
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x564dd80861f6 - std::panicking::rust_panic_with_hook::hd27f6b49984c37db
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x564dd8085f42 - std::panicking::begin_panic_handler::{{closure}}::h3cbc731df9d96e4d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x564dd8084586 - std::sys_common::backtrace::__rust_end_short_backtrace::hc27809f103d211f0
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x564dd8085ca0 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x564dd7eba2a5 - core::panicking::panic_fmt::ha729e53058547cad
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x564dd7eba883 - core::result::unwrap_failed::h94a3ea7a3449b5ea
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/result.rs:1649:5
[INFO] [stdout]   20:     0x564dd7ebc481 - core::result::Result<T,E>::unwrap::hff17924f497e5b9d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/result.rs:1073:23
[INFO] [stdout]   21:     0x564dd7ec20ec - rustlings::exercise::test::test_exercise_with_output::ha7234f142a4e479e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:342:19
[INFO] [stdout]   22:     0x564dd7ec1f87 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h165e5fcbf692259d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:335:35
[INFO] [stdout]   23:     0x564dd7ec37f6 - core::ops::function::FnOnce::call_once::h4317b6e7b8335e2d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x564dd7f0a4cf - core::ops::function::FnOnce::call_once::hc0fe9d49e29a8147
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x564dd7f0a4cf - test::__rust_begin_short_backtrace::haa61ceb70470fb3e
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x564dd7f09251 - test::run_test_in_process::{{closure}}::h8585fae9636dddb2
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x564dd7f09251 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb7a42bf7326d90ad
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x564dd7f09251 - std::panicking::try::do_call::h9063f39381e190d5
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x564dd7f09251 - std::panicking::try::h1e696c55679552ba
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x564dd7f09251 - std::panic::catch_unwind::ha638c57cde7bcebd
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x564dd7f09251 - test::run_test_in_process::h87d13783dd3d2492
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x564dd7f09251 - test::run_test::{{closure}}::hbfb7402b4584e0f1
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x564dd7ed06f6 - test::run_test::{{closure}}::h6b5a8e7824747db3
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x564dd7ed06f6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd4768720b288897d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x564dd7ed5757 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha03eb79d3e2ff5a3
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x564dd7ed5757 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hec8051eee7bc5c29
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x564dd7ed5757 - std::panicking::try::do_call::ha639d9c4a070100b
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x564dd7ed5757 - std::panicking::try::ha45df3d3f6ed1370
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x564dd7ed5757 - std::panic::catch_unwind::hac44f4c50a87c82d
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x564dd7ed5757 - std::thread::Builder::spawn_unchecked_::{{closure}}::hfecb7080eaed2a35
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x564dd7ed5757 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4739d9410aed0b36
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x564dd808ae35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf07182c172025753
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x564dd808ae35 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hffcc280980d6bb6c
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x564dd808ae35 - std::sys::unix::thread::Thread::new::thread_start::h35e8c1dabb0282bb
[INFO] [stdout]                                at /rustc/9c1665de5d324fe858dc15371578d6f928bfc123/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7ff3afa8dac3 - <unknown>
[INFO] [stdout]   46:     0x7ff3afb1ebf4 - __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 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "6b6cf268a363a555cefaedd4cd553314ac9de257e52a0082e4cf8ecf13027310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b6cf268a363a555cefaedd4cd553314ac9de257e52a0082e4cf8ecf13027310", kill_on_drop: false }`
[INFO] [stdout] 6b6cf268a363a555cefaedd4cd553314ac9de257e52a0082e4cf8ecf13027310
