[INFO] cloning repository https://github.com/derpy4me/rustlings_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/derpy4me/rustlings_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderpy4me%2Frustlings_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderpy4me%2Frustlings_tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8e4b075d7a3d5126970d94f319abe578b6121eae [INFO] testing derpy4me/rustlings_tutorial against master#159ba8a92c9e2fa4121f106176309521f4af87e9+rustflags=-Copt-level=3 for pr-107051 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderpy4me%2Frustlings_tutorial" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/derpy4me/rustlings_tutorial on toolchain 159ba8a92c9e2fa4121f106176309521f4af87e9 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/derpy4me/rustlings_tutorial [INFO] finished tweaking git repo https://github.com/derpy4me/rustlings_tutorial [INFO] tweaked toml for git repo https://github.com/derpy4me/rustlings_tutorial written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/derpy4me/rustlings_tutorial 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" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6b3d21fbd78b606fd47ccd155449f4c0b0f88f794c66cdb99ccaf777eb016d39 [INFO] running `Command { std: "docker" "start" "-a" "6b3d21fbd78b606fd47ccd155449f4c0b0f88f794c66cdb99ccaf777eb016d39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6b3d21fbd78b606fd47ccd155449f4c0b0f88f794c66cdb99ccaf777eb016d39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b3d21fbd78b606fd47ccd155449f4c0b0f88f794c66cdb99ccaf777eb016d39", kill_on_drop: false }` [INFO] [stdout] 6b3d21fbd78b606fd47ccd155449f4c0b0f88f794c66cdb99ccaf777eb016d39 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Copt-level=3" "-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0ca14ea3a06b654c9033ec653a87671123660beac53c93cc66e4c12e9200779c [INFO] running `Command { std: "docker" "start" "-a" "0ca14ea3a06b654c9033ec653a87671123660beac53c93cc66e4c12e9200779c", 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 autocfg v1.0.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling serde v1.0.129 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling instant v0.1.10 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling inotify-sys v0.1.5 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling termios v0.3.3 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling clicolors-control v1.0.1 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling console v0.14.1 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling indicatif v0.10.3 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling argh v0.1.5 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v4.6.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 50s [INFO] running `Command { std: "docker" "inspect" "0ca14ea3a06b654c9033ec653a87671123660beac53c93cc66e4c12e9200779c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0ca14ea3a06b654c9033ec653a87671123660beac53c93cc66e4c12e9200779c", kill_on_drop: false }` [INFO] [stdout] 0ca14ea3a06b654c9033ec653a87671123660beac53c93cc66e4c12e9200779c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Copt-level=3" "-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9fd0cb07305ddb6d101d8d80e36cc252ed986e0a9ad67984fe6d64bb4a7be92b [INFO] running `Command { std: "docker" "start" "-a" "9fd0cb07305ddb6d101d8d80e36cc252ed986e0a9ad67984fe6d64bb4a7be92b", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling predicates-tree v1.0.3 [INFO] [stderr] Compiling predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v4.6.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 20.12s [INFO] running `Command { std: "docker" "inspect" "9fd0cb07305ddb6d101d8d80e36cc252ed986e0a9ad67984fe6d64bb4a7be92b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9fd0cb07305ddb6d101d8d80e36cc252ed986e0a9ad67984fe6d64bb4a7be92b", kill_on_drop: false }` [INFO] [stdout] 9fd0cb07305ddb6d101d8d80e36cc252ed986e0a9ad67984fe6d64bb4a7be92b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Copt-level=3" "-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@sha256:7c93e6f9a94679f34221d1005849d4c83862f85b14a264fa0883942f4d043a66" "/opt/rustwide/cargo-home/bin/cargo" "+159ba8a92c9e2fa4121f106176309521f4af87e9" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 0417d5d7f565287398e29e89596ee25b1cdfad6f0417c249e8116ca75e61f249 [INFO] running `Command { std: "docker" "start" "-a" "0417d5d7f565287398e29e89596ee25b1cdfad6f0417c249e8116ca75e61f249", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-93d7dd7975bb1321) [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 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }', src/exercise.rs:270:36 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5627efc6afba - std::backtrace_rs::backtrace::libunwind::trace::h66ee1baad70f162c [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stdout] 1: 0x5627efc6afba - std::backtrace_rs::backtrace::trace_unsynchronized::h3125ffde7ca4d99d [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x5627efc6afba - std::sys_common::backtrace::_print_fmt::hbdbfa23eed07e688 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:65:5 [INFO] [stdout] 3: 0x5627efc6afba - ::fmt::h9040fa46c3c21247 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x5627efc8eede - core::fmt::write::h19a3b12aeae2c539 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/fmt/mod.rs:1213:17 [INFO] [stdout] 5: 0x5627efc683d5 - std::io::Write::write_fmt::h09ebe1f248736025 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/io/mod.rs:1682:15 [INFO] [stdout] 6: 0x5627efc6ad85 - std::sys_common::backtrace::_print::hd1ad2573e05197ac [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 7: 0x5627efc6ad85 - std::sys_common::backtrace::print::h6c0cd3c6b401ec72 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 8: 0x5627efc6cb7f - std::panicking::default_hook::{{closure}}::hc09dc9f114375efd [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:267:22 [INFO] [stdout] 9: 0x5627efc6c83f - std::panicking::default_hook::hfef666cfe5862d3a [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:283:9 [INFO] [stdout] 10: 0x5627efbcd0b7 - as core::ops::function::Fn>::call::he38c0640087feffe [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:2002:9 [INFO] [stdout] 11: 0x5627efbcd0b7 - test::test_main::{{closure}}::h071363f8c705b257 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:135:21 [INFO] [stdout] 12: 0x5627efc6d2ad - as core::ops::function::Fn>::call::hc536ff91d276a16f [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:2002:9 [INFO] [stdout] 13: 0x5627efc6d2ad - std::panicking::rust_panic_with_hook::h09cdc27f5c472cc8 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:692:13 [INFO] [stdout] 14: 0x5627efc6d029 - std::panicking::begin_panic_handler::{{closure}}::h5f38ac8f9e3f3f74 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:579:13 [INFO] [stdout] 15: 0x5627efc6b46c - std::sys_common::backtrace::__rust_end_short_backtrace::hb85d55d699513ebd [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:137:18 [INFO] [stdout] 16: 0x5627efc6cd32 - rust_begin_unwind [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:575:5 [INFO] [stdout] 17: 0x5627efb973f3 - core::panicking::panic_fmt::hf0f695a991f65334 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/panicking.rs:64:14 [INFO] [stdout] 18: 0x5627efb978a3 - core::result::unwrap_failed::hd38b5d0bdcad8ef3 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/result.rs:1790:5 [INFO] [stdout] 19: 0x5627efb9c07b - core::result::Result::unwrap::hc2b7b369305771de [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/result.rs:1112:23 [INFO] [stdout] 20: 0x5627efb9c07b - rustlings::exercise::test::test_clean::hb582b3c386dadcad [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:270:9 [INFO] [stdout] 21: 0x5627efb98ac9 - rustlings::exercise::test::test_clean::{{closure}}::hfab0bb0cd5b39982 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:21 [INFO] [stdout] 22: 0x5627efb98ac9 - core::ops::function::FnOnce::call_once::h1ed03bd3e0e4ccbc [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x5627efbd254f - core::ops::function::FnOnce::call_once::hd02ae4551b605d89 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5627efbd254f - test::__rust_begin_short_backtrace::he067d58dbbe4eff7 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:656:18 [INFO] [stdout] 25: 0x5627efba3d6c - test::run_test::{{closure}}::h99317ada5450d4d1 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:647:30 [INFO] [stdout] 26: 0x5627efba3d6c - core::ops::function::FnOnce::call_once{{vtable.shim}}::hdbccb09ec15aa75d [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 27: 0x5627efbd14da - as core::ops::function::FnOnce>::call_once::hc712263f4579e1e7 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:1988:9 [INFO] [stdout] 28: 0x5627efbd14da - as core::ops::function::FnOnce<()>>::call_once::h3fdee2221c1ed465 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 29: 0x5627efbd14da - std::panicking::try::do_call::h974a87241ba6f765 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:483:40 [INFO] [stdout] 30: 0x5627efbd14da - std::panicking::try::hf1858fb4e3e6e1ba [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:447:19 [INFO] [stdout] 31: 0x5627efbd14da - std::panic::catch_unwind::h3fc10dff34553685 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panic.rs:140:14 [INFO] [stdout] 32: 0x5627efbd14da - test::run_test_in_process::h44fc06fdd04e007f [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:679:27 [INFO] [stdout] 33: 0x5627efbd14da - test::run_test::run_test_inner::{{closure}}::hc67e39cdf6272f40 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:573:39 [INFO] [stdout] 34: 0x5627efb9e431 - test::run_test::run_test_inner::{{closure}}::h1d1c6318c71d3046 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:600:37 [INFO] [stdout] 35: 0x5627efb9e431 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e2185d7b9c32705 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:121:18 [INFO] [stdout] 36: 0x5627efba3dfb - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf11e5bf7faafa3a6 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/thread/mod.rs:558:17 [INFO] [stdout] 37: 0x5627efba3dfb - as core::ops::function::FnOnce<()>>::call_once::h2a1d6b9f209466ea [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 38: 0x5627efba3dfb - std::panicking::try::do_call::he469b6a8fbe95fec [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:483:40 [INFO] [stdout] 39: 0x5627efba3dfb - std::panicking::try::h1f733fcf13a98585 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:447:19 [INFO] [stdout] 40: 0x5627efba3dfb - std::panic::catch_unwind::hecc42615914d8beb [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panic.rs:140:14 [INFO] [stdout] 41: 0x5627efba3dfb - std::thread::Builder::spawn_unchecked_::{{closure}}::h17668fadfa667920 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 42: 0x5627efba3dfb - core::ops::function::FnOnce::call_once{{vtable.shim}}::hfeec135cddf64dce [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 43: 0x5627efc71b13 - as core::ops::function::FnOnce>::call_once::h092bd1b4a0b89f07 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:1988:9 [INFO] [stdout] 44: 0x5627efc71b13 - as core::ops::function::FnOnce>::call_once::h54d7347fe39f45fd [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:1988:9 [INFO] [stdout] 45: 0x5627efc71b13 - std::sys::unix::thread::Thread::new::thread_start::hc8954c4997518988 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 46: 0x7f674b339b43 - [INFO] [stdout] 47: 0x7f674b3cabb4 - __clone [INFO] [stdout] 48: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- exercise::test::test_exercise_with_output stdout ---- [INFO] [stdout] thread 'exercise::test::test_exercise_with_output' panicked at 'called `Result::unwrap()` on an `Err` value: ExerciseOutput { stdout: "", stderr: "\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: couldn't create a temp dir: Read-only file system (os error 30) at path \"/opt/rustwide/workdir/./rmetapW23Si\"\u{1b}[0m\n\n\u{1b}[0m\u{1b}[1m\u{1b}[38;5;9merror\u{1b}[0m\u{1b}[0m\u{1b}[1m: aborting due to previous error\u{1b}[0m\n\n" }', src/exercise.rs:343:38 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5627efc6afba - std::backtrace_rs::backtrace::libunwind::trace::h66ee1baad70f162c [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stdout] 1: 0x5627efc6afba - std::backtrace_rs::backtrace::trace_unsynchronized::h3125ffde7ca4d99d [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stdout] 2: 0x5627efc6afba - std::sys_common::backtrace::_print_fmt::hbdbfa23eed07e688 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:65:5 [INFO] [stdout] 3: 0x5627efc6afba - ::fmt::h9040fa46c3c21247 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stdout] 4: 0x5627efc8eede - core::fmt::write::h19a3b12aeae2c539 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/fmt/mod.rs:1213:17 [INFO] [stdout] 5: 0x5627efc683d5 - std::io::Write::write_fmt::h09ebe1f248736025 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/io/mod.rs:1682:15 [INFO] [stdout] 6: 0x5627efc6ad85 - std::sys_common::backtrace::_print::hd1ad2573e05197ac [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stdout] 7: 0x5627efc6ad85 - std::sys_common::backtrace::print::h6c0cd3c6b401ec72 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stdout] 8: 0x5627efc6cb7f - std::panicking::default_hook::{{closure}}::hc09dc9f114375efd [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:267:22 [INFO] [stdout] 9: 0x5627efc6c83f - std::panicking::default_hook::hfef666cfe5862d3a [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:283:9 [INFO] [stdout] 10: 0x5627efbcd0b7 - as core::ops::function::Fn>::call::he38c0640087feffe [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:2002:9 [INFO] [stdout] 11: 0x5627efbcd0b7 - test::test_main::{{closure}}::h071363f8c705b257 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:135:21 [INFO] [stdout] 12: 0x5627efc6d2ad - as core::ops::function::Fn>::call::hc536ff91d276a16f [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:2002:9 [INFO] [stdout] 13: 0x5627efc6d2ad - std::panicking::rust_panic_with_hook::h09cdc27f5c472cc8 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:692:13 [INFO] [stdout] 14: 0x5627efc6d029 - std::panicking::begin_panic_handler::{{closure}}::h5f38ac8f9e3f3f74 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:579:13 [INFO] [stdout] 15: 0x5627efc6b46c - std::sys_common::backtrace::__rust_end_short_backtrace::hb85d55d699513ebd [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:137:18 [INFO] [stdout] 16: 0x5627efc6cd32 - rust_begin_unwind [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:575:5 [INFO] [stdout] 17: 0x5627efb973f3 - core::panicking::panic_fmt::hf0f695a991f65334 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/panicking.rs:64:14 [INFO] [stdout] 18: 0x5627efb978a3 - core::result::unwrap_failed::hd38b5d0bdcad8ef3 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/result.rs:1790:5 [INFO] [stdout] 19: 0x5627efb9d0a1 - core::result::Result::unwrap::h44ae07651f05db2e [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/result.rs:1112:23 [INFO] [stdout] 20: 0x5627efb9d0a1 - rustlings::exercise::test::test_exercise_with_output::hae5a21544ff7e7b5 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:343:19 [INFO] [stdout] 21: 0x5627efb98ae9 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::hb80ade49cef373f8 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:336:36 [INFO] [stdout] 22: 0x5627efb98ae9 - core::ops::function::FnOnce::call_once::h4ae06f0ff7fe455f [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 23: 0x5627efbd254f - core::ops::function::FnOnce::call_once::hd02ae4551b605d89 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5627efbd254f - test::__rust_begin_short_backtrace::he067d58dbbe4eff7 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:656:18 [INFO] [stdout] 25: 0x5627efba3d6c - test::run_test::{{closure}}::h99317ada5450d4d1 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:647:30 [INFO] [stdout] 26: 0x5627efba3d6c - core::ops::function::FnOnce::call_once{{vtable.shim}}::hdbccb09ec15aa75d [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 27: 0x5627efbd14da - as core::ops::function::FnOnce>::call_once::hc712263f4579e1e7 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:1988:9 [INFO] [stdout] 28: 0x5627efbd14da - as core::ops::function::FnOnce<()>>::call_once::h3fdee2221c1ed465 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 29: 0x5627efbd14da - std::panicking::try::do_call::h974a87241ba6f765 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:483:40 [INFO] [stdout] 30: 0x5627efbd14da - std::panicking::try::hf1858fb4e3e6e1ba [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:447:19 [INFO] [stdout] 31: 0x5627efbd14da - std::panic::catch_unwind::h3fc10dff34553685 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panic.rs:140:14 [INFO] [stdout] 32: 0x5627efbd14da - test::run_test_in_process::h44fc06fdd04e007f [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:679:27 [INFO] [stdout] 33: 0x5627efbd14da - test::run_test::run_test_inner::{{closure}}::hc67e39cdf6272f40 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:573:39 [INFO] [stdout] 34: 0x5627efb9e431 - test::run_test::run_test_inner::{{closure}}::h1d1c6318c71d3046 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/test/src/lib.rs:600:37 [INFO] [stdout] 35: 0x5627efb9e431 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e2185d7b9c32705 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys_common/backtrace.rs:121:18 [INFO] [stdout] 36: 0x5627efba3dfb - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf11e5bf7faafa3a6 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/thread/mod.rs:558:17 [INFO] [stdout] 37: 0x5627efba3dfb - as core::ops::function::FnOnce<()>>::call_once::h2a1d6b9f209466ea [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/panic/unwind_safe.rs:271:9 [INFO] [stdout] 38: 0x5627efba3dfb - std::panicking::try::do_call::he469b6a8fbe95fec [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:483:40 [INFO] [stdout] 39: 0x5627efba3dfb - std::panicking::try::h1f733fcf13a98585 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panicking.rs:447:19 [INFO] [stdout] 40: 0x5627efba3dfb - std::panic::catch_unwind::hecc42615914d8beb [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/panic.rs:140:14 [INFO] [stdout] 41: 0x5627efba3dfb - std::thread::Builder::spawn_unchecked_::{{closure}}::h17668fadfa667920 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 42: 0x5627efba3dfb - core::ops::function::FnOnce::call_once{{vtable.shim}}::hfeec135cddf64dce [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 43: 0x5627efc71b13 - as core::ops::function::FnOnce>::call_once::h092bd1b4a0b89f07 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:1988:9 [INFO] [stdout] 44: 0x5627efc71b13 - as core::ops::function::FnOnce>::call_once::h54d7347fe39f45fd [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/alloc/src/boxed.rs:1988:9 [INFO] [stdout] 45: 0x5627efc71b13 - std::sys::unix::thread::Thread::new::thread_start::hc8954c4997518988 [INFO] [stdout] at /rustc/159ba8a92c9e2fa4121f106176309521f4af87e9/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stdout] 46: 0x7f674b339b43 - [INFO] [stdout] 47: 0x7f674b3cabb4 - __clone [INFO] [stdout] 48: 0x0 - [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 0.13s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "0417d5d7f565287398e29e89596ee25b1cdfad6f0417c249e8116ca75e61f249", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0417d5d7f565287398e29e89596ee25b1cdfad6f0417c249e8116ca75e61f249", kill_on_drop: false }` [INFO] [stdout] 0417d5d7f565287398e29e89596ee25b1cdfad6f0417c249e8116ca75e61f249