[INFO] cloning repository https://github.com/johnkangw/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnkangw/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnkangw%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnkangw%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca5e4b62facb7623ae847ea4f287d069a2f7e81e
[INFO] testing johnkangw/rustlings against beta-2025-02-18 for beta-1.86-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnkangw%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] [stderr] error: unable to write file .gitpod.yml
[INFO] [stderr] error: unable to write file .markdownlint.yml
[INFO] [stderr] fatal: cannot create directory at '.vscode': No space left on device
[INFO] [stderr] warning: Clone succeeded, but checkout failed.
[INFO] [stderr] You can inspect what was checked out with 'git status'
[INFO] [stderr] and retry with 'git restore --source=HEAD :/'
[INFO] [stderr] 
[INFO] testing johnkangw/rustlings against beta-2025-02-18 for beta-1.86-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnkangw%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/johnkangw/rustlings on toolchain beta-2025-02-18
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-02-18" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnkangw/rustlings
[INFO] finished tweaking git repo https://github.com/johnkangw/rustlings
[INFO] tweaked toml for git repo https://github.com/johnkangw/rustlings written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/johnkangw/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" "+beta-2025-02-18" "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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-02-18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c241592cfdb0410ed60e51fb41834fdb33c22e6c134582fd9c106115fd7568e
[INFO] running `Command { std: "docker" "start" "-a" "7c241592cfdb0410ed60e51fb41834fdb33c22e6c134582fd9c106115fd7568e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c241592cfdb0410ed60e51fb41834fdb33c22e6c134582fd9c106115fd7568e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c241592cfdb0410ed60e51fb41834fdb33c22e6c134582fd9c106115fd7568e", kill_on_drop: false }`
[INFO] [stdout] 7c241592cfdb0410ed60e51fb41834fdb33c22e6c134582fd9c106115fd7568e
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-02-18" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a392a7c53d5befc98b0c7c1128185a26b3f4ae798c8e9841c11f554b3656fd6
[INFO] running `Command { std: "docker" "start" "-a" "9a392a7c53d5befc98b0c7c1128185a26b3f4ae798c8e9841c11f554b3656fd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.81
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde v1.0.198
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling portable-atomic v1.6.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle-query v1.0.2
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling serde_json v1.0.116
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling winnow v0.6.6
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.23
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling console v0.15.8
[INFO] [stderr]    Compiling inotify v0.9.6
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]    Compiling notify v6.1.1
[INFO] [stderr]    Compiling indicatif v0.17.8
[INFO] [stderr]    Compiling notify-debouncer-mini v0.4.1
[INFO] [stderr]    Compiling which v6.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.198
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]    Compiling clap v4.5.4
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling toml_edit v0.22.11
[INFO] [stderr]    Compiling rustlings v5.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.61s
[INFO] running `Command { std: "docker" "inspect" "9a392a7c53d5befc98b0c7c1128185a26b3f4ae798c8e9841c11f554b3656fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a392a7c53d5befc98b0c7c1128185a26b3f4ae798c8e9841c11f554b3656fd6", kill_on_drop: false }`
[INFO] [stdout] 9a392a7c53d5befc98b0c7c1128185a26b3f4ae798c8e9841c11f554b3656fd6
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-02-18" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc10e5af87349f87d9ceb6827663b974ee8b6f6e8491955746e4b652000eed9a
[INFO] running `Command { std: "docker" "start" "-a" "fc10e5af87349f87d9ceb6827663b974ee8b6f6e8491955746e4b652000eed9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling predicates-core v1.0.6
[INFO] [stderr]    Compiling termtree v0.4.1
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling assert_cmd v2.0.14
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling predicates-tree v1.0.9
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling bstr v1.9.1
[INFO] [stderr]    Compiling predicates v3.1.0
[INFO] [stderr]    Compiling rustlings v5.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 13.65s
[INFO] running `Command { std: "docker" "inspect" "fc10e5af87349f87d9ceb6827663b974ee8b6f6e8491955746e4b652000eed9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc10e5af87349f87d9ceb6827663b974ee8b6f6e8491955746e4b652000eed9a", kill_on_drop: false }`
[INFO] [stdout] fc10e5af87349f87d9ceb6827663b974ee8b6f6e8491955746e4b652000eed9a
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-02-18" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f4ab59e35c1ad2a30a3a81baed4c7e1dbea572fa5d816351e554ffed5beab081
[INFO] running `Command { std: "docker" "start" "-a" "f4ab59e35c1ad2a30a3a81baed4c7e1dbea572fa5d816351e554ffed5beab081", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-9adc3adac8097236)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test exercise::test::test_pending_state ... ok
[INFO] [stdout] test exercise::test::test_finished_exercise ... ok
[INFO] [stdout] test exercise::test::test_not_done ... ok
[INFO] [stdout] test exercise::test::test_clean ... FAILED
[INFO] [stdout] test exercise::test::test_exercise_with_output ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_clean stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::test::test_clean' panicked at src/exercise.rs:354:35:
[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:     0x5fa90bd27dc0 - std::backtrace_rs::backtrace::libunwind::trace::h8ddfbb338e69e199
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5fa90bd27dc0 - std::backtrace_rs::backtrace::trace_unsynchronized::h4b42ed801e8ee862
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5fa90bd27dc0 - std::sys::backtrace::_print_fmt::hb90198f2c10bf707
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5fa90bd27dc0 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h0f123f0656f13ecf
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5fa90bd4e703 - core::fmt::rt::Argument::fmt::h12e51c1529489cd8
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5fa90bd4e703 - core::fmt::write::h0abcdef7aa759353
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/fmt/mod.rs:1449:21
[INFO] [stdout]    6:     0x5fa90bd24db3 - std::io::Write::write_fmt::h7dca996477fd2572
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/io/mod.rs:1890:15
[INFO] [stdout]    7:     0x5fa90bd27c12 - std::sys::backtrace::BacktraceLock::print::h759bdab738e31d9d
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5fa90bd291ef - std::panicking::default_hook::{{closure}}::h0616f7020c8b9e0d
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:298:22
[INFO] [stdout]    9:     0x5fa90bd29008 - std::panicking::default_hook::hcb4bf3fe9044f7f6
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:322:9
[INFO] [stdout]   10:     0x5fa90bce5435 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h279e54743b3b5624
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1990:9
[INFO] [stdout]   11:     0x5fa90bce5435 - test::test_main::{{closure}}::h1534cf01c0e4ff40
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:135:21
[INFO] [stdout]   12:     0x5fa90bd29c63 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1e945e436dfc22a7
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1990:9
[INFO] [stdout]   13:     0x5fa90bd29c63 - std::panicking::rust_panic_with_hook::h2fd8d6252462d800
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:839:13
[INFO] [stdout]   14:     0x5fa90bd2993a - std::panicking::begin_panic_handler::{{closure}}::h746cf6ba43e1c73f
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:704:13
[INFO] [stdout]   15:     0x5fa90bd282d9 - std::sys::backtrace::__rust_end_short_backtrace::hba3f7b171935b491
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   16:     0x5fa90bd295cd - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:695:5
[INFO] [stdout]   17:     0x5fa90bc99d90 - core::panicking::panic_fmt::h34cc4efb1683329b
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/panicking.rs:75:14
[INFO] [stdout]   18:     0x5fa90bc9a206 - core::result::unwrap_failed::h7658f905fcb0751c
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/result.rs:1704:5
[INFO] [stdout]   19:     0x5fa90bcaa402 - core::result::Result<T,E>::unwrap::h0234f1716e1347b0
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/result.rs:1109:23
[INFO] [stdout]   20:     0x5fa90bcaa402 - rustlings::exercise::test::test_clean::h0939f7a78c89509f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:354:9
[INFO] [stdout]   21:     0x5fa90bcaa387 - rustlings::exercise::test::test_clean::{{closure}}::h2c9964ba32ecb75f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:353:20
[INFO] [stdout]   22:     0x5fa90bca4346 - core::ops::function::FnOnce::call_once::hafeaef3925032dd6
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5fa90bceac2b - core::ops::function::FnOnce::call_once::h646a81b1a0ee3114
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5fa90bceac2b - test::__rust_begin_short_backtrace::h9737b749cdf20b73
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:637:18
[INFO] [stdout]   25:     0x5fa90bce9aa8 - test::run_test_in_process::{{closure}}::hc9246156bf12c5e3
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:660:60
[INFO] [stdout]   26:     0x5fa90bce9aa8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd187ec090a91a453
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5fa90bce9aa8 - std::panicking::try::do_call::hb7490276b7008401
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:587:40
[INFO] [stdout]   28:     0x5fa90bce9aa8 - std::panicking::try::hde59a334d39e511f
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:550:19
[INFO] [stdout]   29:     0x5fa90bce9aa8 - std::panic::catch_unwind::h777cbed9f782814a
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x5fa90bce9aa8 - test::run_test_in_process::h6282ed78cab70f02
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:660:27
[INFO] [stdout]   31:     0x5fa90bce9aa8 - test::run_test::{{closure}}::ha4e6ef53f436d64b
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:581:43
[INFO] [stdout]   32:     0x5fa90bcada35 - test::run_test::{{closure}}::he11a461bf23e93a3
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:611:41
[INFO] [stdout]   33:     0x5fa90bcada35 - std::sys::backtrace::__rust_begin_short_backtrace::h25c92ff64d2c4388
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   34:     0x5fa90bcb140a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h6e893de0bbdcdcce
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5fa90bcb140a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h2b3c3ff4a3a96573
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5fa90bcb140a - std::panicking::try::do_call::hcc3185a4abc5431b
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:587:40
[INFO] [stdout]   37:     0x5fa90bcb140a - std::panicking::try::hc832a415a1d2ee28
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:550:19
[INFO] [stdout]   38:     0x5fa90bcb140a - std::panic::catch_unwind::h5e16acac36e3f225
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panic.rs:358:14
[INFO] [stdout]   39:     0x5fa90bcb140a - std::thread::Builder::spawn_unchecked_::{{closure}}::h9863d22f929fcd53
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5fa90bcb140a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h707ec2cca9db5939
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5fa90bd2dc1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5f64cf9bc27988da
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1976:9
[INFO] [stdout]   42:     0x5fa90bd2dc1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2964712f7a7284c7
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1976:9
[INFO] [stdout]   43:     0x5fa90bd2dc1b - std::sys::pal::unix::thread::Thread::new::thread_start::h22ff3573f90e72f2
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/pal/unix/thread.rs:106:17
[INFO] [stdout]   44:     0x74d648a51ac3 - <unknown>
[INFO] [stdout]   45:     0x74d648ae2a04 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at src/exercise.rs:445:38:
[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/./rmetaF0H4TF\"\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:     0x5fa90bd27dc0 - std::backtrace_rs::backtrace::libunwind::trace::h8ddfbb338e69e199
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5fa90bd27dc0 - std::backtrace_rs::backtrace::trace_unsynchronized::h4b42ed801e8ee862
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5fa90bd27dc0 - std::sys::backtrace::_print_fmt::hb90198f2c10bf707
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5fa90bd27dc0 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h0f123f0656f13ecf
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5fa90bd4e703 - core::fmt::rt::Argument::fmt::h12e51c1529489cd8
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x5fa90bd4e703 - core::fmt::write::h0abcdef7aa759353
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/fmt/mod.rs:1449:21
[INFO] [stdout]    6:     0x5fa90bd24db3 - std::io::Write::write_fmt::h7dca996477fd2572
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/io/mod.rs:1890:15
[INFO] [stdout]    7:     0x5fa90bd27c12 - std::sys::backtrace::BacktraceLock::print::h759bdab738e31d9d
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x5fa90bd291ef - std::panicking::default_hook::{{closure}}::h0616f7020c8b9e0d
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:298:22
[INFO] [stdout]    9:     0x5fa90bd29008 - std::panicking::default_hook::hcb4bf3fe9044f7f6
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:322:9
[INFO] [stdout]   10:     0x5fa90bce5435 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h279e54743b3b5624
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1990:9
[INFO] [stdout]   11:     0x5fa90bce5435 - test::test_main::{{closure}}::h1534cf01c0e4ff40
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:135:21
[INFO] [stdout]   12:     0x5fa90bd29c63 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1e945e436dfc22a7
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1990:9
[INFO] [stdout]   13:     0x5fa90bd29c63 - std::panicking::rust_panic_with_hook::h2fd8d6252462d800
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:839:13
[INFO] [stdout]   14:     0x5fa90bd2993a - std::panicking::begin_panic_handler::{{closure}}::h746cf6ba43e1c73f
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:704:13
[INFO] [stdout]   15:     0x5fa90bd282d9 - std::sys::backtrace::__rust_end_short_backtrace::hba3f7b171935b491
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   16:     0x5fa90bd295cd - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:695:5
[INFO] [stdout]   17:     0x5fa90bc99d90 - core::panicking::panic_fmt::h34cc4efb1683329b
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/panicking.rs:75:14
[INFO] [stdout]   18:     0x5fa90bc9a206 - core::result::unwrap_failed::h7658f905fcb0751c
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/result.rs:1704:5
[INFO] [stdout]   19:     0x5fa90bcab256 - core::result::Result<T,E>::unwrap::ha7340bb98250654b
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/result.rs:1109:23
[INFO] [stdout]   20:     0x5fa90bcab256 - rustlings::exercise::test::test_exercise_with_output::he7716e4ab118f9ea
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:445:19
[INFO] [stdout]   21:     0x5fa90bcab067 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h4b4e47ec00ea818f
[INFO] [stdout]                                at /opt/rustwide/workdir/src/exercise.rs:438:35
[INFO] [stdout]   22:     0x5fa90bca4446 - core::ops::function::FnOnce::call_once::he234c337b3d9a1fa
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5fa90bceac2b - core::ops::function::FnOnce::call_once::h646a81b1a0ee3114
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5fa90bceac2b - test::__rust_begin_short_backtrace::h9737b749cdf20b73
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:637:18
[INFO] [stdout]   25:     0x5fa90bce9aa8 - test::run_test_in_process::{{closure}}::hc9246156bf12c5e3
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:660:60
[INFO] [stdout]   26:     0x5fa90bce9aa8 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd187ec090a91a453
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5fa90bce9aa8 - std::panicking::try::do_call::hb7490276b7008401
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:587:40
[INFO] [stdout]   28:     0x5fa90bce9aa8 - std::panicking::try::hde59a334d39e511f
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:550:19
[INFO] [stdout]   29:     0x5fa90bce9aa8 - std::panic::catch_unwind::h777cbed9f782814a
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x5fa90bce9aa8 - test::run_test_in_process::h6282ed78cab70f02
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:660:27
[INFO] [stdout]   31:     0x5fa90bce9aa8 - test::run_test::{{closure}}::ha4e6ef53f436d64b
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:581:43
[INFO] [stdout]   32:     0x5fa90bcada35 - test::run_test::{{closure}}::he11a461bf23e93a3
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/test/src/lib.rs:611:41
[INFO] [stdout]   33:     0x5fa90bcada35 - std::sys::backtrace::__rust_begin_short_backtrace::h25c92ff64d2c4388
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   34:     0x5fa90bcb140a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h6e893de0bbdcdcce
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5fa90bcb140a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h2b3c3ff4a3a96573
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5fa90bcb140a - std::panicking::try::do_call::hcc3185a4abc5431b
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:587:40
[INFO] [stdout]   37:     0x5fa90bcb140a - std::panicking::try::hc832a415a1d2ee28
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panicking.rs:550:19
[INFO] [stdout]   38:     0x5fa90bcb140a - std::panic::catch_unwind::h5e16acac36e3f225
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/panic.rs:358:14
[INFO] [stdout]   39:     0x5fa90bcb140a - std::thread::Builder::spawn_unchecked_::{{closure}}::h9863d22f929fcd53
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5fa90bcb140a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h707ec2cca9db5939
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5fa90bd2dc1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5f64cf9bc27988da
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1976:9
[INFO] [stdout]   42:     0x5fa90bd2dc1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2964712f7a7284c7
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/alloc/src/boxed.rs:1976:9
[INFO] [stdout]   43:     0x5fa90bd2dc1b - std::sys::pal::unix::thread::Thread::new::thread_start::h22ff3573f90e72f2
[INFO] [stdout]                                at /rustc/f0cb41030579cd1a6f72bd23f38e677052d5d485/library/std/src/sys/pal/unix/thread.rs:106:17
[INFO] [stdout]   44:     0x74d648a51ac3 - <unknown>
[INFO] [stdout]   45:     0x74d648ae2a04 - clone
[INFO] [stdout]   46:                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. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.19s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rustlings`
[INFO] running `Command { std: "docker" "inspect" "f4ab59e35c1ad2a30a3a81baed4c7e1dbea572fa5d816351e554ffed5beab081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4ab59e35c1ad2a30a3a81baed4c7e1dbea572fa5d816351e554ffed5beab081", kill_on_drop: false }`
[INFO] [stdout] f4ab59e35c1ad2a30a3a81baed4c7e1dbea572fa5d816351e554ffed5beab081