[INFO] cloning repository https://github.com/os2edu/rustlings-huangchenzhao [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/os2edu/rustlings-huangchenzhao" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-huangchenzhao", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-huangchenzhao'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f5a800d7e492ce3a9a4fd726541f4565915dbd95 [INFO] testing os2edu/rustlings-huangchenzhao against 1.90.0 for beta-1.91-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-huangchenzhao" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/os2edu/rustlings-huangchenzhao [INFO] finished tweaking git repo https://github.com/os2edu/rustlings-huangchenzhao [INFO] tweaked toml for git repo https://github.com/os2edu/rustlings-huangchenzhao written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/os2edu/rustlings-huangchenzhao on toolchain 1.90.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/os2edu/rustlings-huangchenzhao 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded proc-macro2 v1.0.28 [INFO] [stderr] Downloaded argh_shared v0.1.5 [INFO] [stderr] Downloaded predicates-core v1.0.2 [INFO] [stderr] Downloaded treeline v0.1.0 [INFO] [stderr] Downloaded predicates-tree v1.0.3 [INFO] [stderr] Downloaded home v0.5.3 [INFO] [stderr] Downloaded argh_derive v0.1.5 [INFO] [stderr] Downloaded argh v0.1.5 [INFO] [stderr] Downloaded serde_derive v1.0.129 [INFO] [stderr] Downloaded once_cell v1.10.0 [INFO] [stderr] Downloaded serde v1.0.129 [INFO] [stderr] Downloaded console v0.15.0 [INFO] [stderr] Downloaded filetime v0.2.15 [INFO] [stderr] Downloaded net2 v0.2.37 [INFO] [stderr] Downloaded regex v1.5.5 [INFO] [stderr] Downloaded unicode-segmentation v1.8.0 [INFO] [stderr] Downloaded serde_json v1.0.81 [INFO] [stderr] Downloaded syn v1.0.75 [INFO] [stderr] Downloaded slab v0.4.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a59ba1618e11470816f1576f6d4959c346755d018e1816333974d05e2d4e2bb2 [INFO] running `Command { std: "docker" "start" "-a" "a59ba1618e11470816f1576f6d4959c346755d018e1816333974d05e2d4e2bb2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a59ba1618e11470816f1576f6d4959c346755d018e1816333974d05e2d4e2bb2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a59ba1618e11470816f1576f6d4959c346755d018e1816333974d05e2d4e2bb2", kill_on_drop: false }` [INFO] [stdout] a59ba1618e11470816f1576f6d4959c346755d018e1816333974d05e2d4e2bb2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c438e7b3805a0faefdb5eb48017363fb5af5d9f7bf21e70b347d25886805895d [INFO] running `Command { std: "docker" "start" "-a" "c438e7b3805a0faefdb5eb48017363fb5af5d9f7bf21e70b347d25886805895d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.137 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling parking_lot_core v0.9.4 [INFO] [stderr] Compiling serde v1.0.129 [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 smallvec v1.10.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling argh_shared v0.1.5 [INFO] [stderr] Compiling serde_json v1.0.81 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling lazycell v1.3.0 [INFO] [stderr] Compiling bytes v1.2.1 [INFO] [stderr] Compiling number_prefix v0.4.0 [INFO] [stderr] Compiling itoa v1.0.2 [INFO] [stderr] Compiling pin-project-lite v0.2.9 [INFO] [stderr] Compiling home v0.5.3 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Compiling lock_api v0.4.9 [INFO] [stderr] Compiling tokio v1.21.2 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.9 [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 num_cpus v1.13.1 [INFO] [stderr] Compiling filetime v0.2.15 [INFO] [stderr] Compiling socket2 v0.4.7 [INFO] [stderr] Compiling mio v0.8.5 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling parking_lot v0.12.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex v1.5.5 [INFO] [stderr] Compiling console v0.15.0 [INFO] [stderr] Compiling indicatif v0.16.2 [INFO] [stderr] Compiling tokio-macros v1.8.0 [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] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.02s [INFO] running `Command { std: "docker" "inspect" "c438e7b3805a0faefdb5eb48017363fb5af5d9f7bf21e70b347d25886805895d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c438e7b3805a0faefdb5eb48017363fb5af5d9f7bf21e70b347d25886805895d", kill_on_drop: false }` [INFO] [stdout] c438e7b3805a0faefdb5eb48017363fb5af5d9f7bf21e70b347d25886805895d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6a8214c7440ff51c582040e2a5146f437a75ec64c043e262533ea0b2fe11c48c [INFO] running `Command { std: "docker" "start" "-a" "6a8214c7440ff51c582040e2a5146f437a75ec64c043e262533ea0b2fe11c48c", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling predicates-tree v1.0.3 [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] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/exercise.rs:109:20 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result { [INFO] [stdout] | ^^^^^ ---------------- the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 5.14s [INFO] running `Command { std: "docker" "inspect" "6a8214c7440ff51c582040e2a5146f437a75ec64c043e262533ea0b2fe11c48c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a8214c7440ff51c582040e2a5146f437a75ec64c043e262533ea0b2fe11c48c", kill_on_drop: false }` [INFO] [stdout] 6a8214c7440ff51c582040e2a5146f437a75ec64c043e262533ea0b2fe11c48c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b65c1a5139ae64cd03d043bca966249f2f2620975719c5d11267c0f3a2eaf08e [INFO] running `Command { std: "docker" "start" "-a" "b65c1a5139ae64cd03d043bca966249f2f2620975719c5d11267c0f3a2eaf08e", kill_on_drop: false }` [INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stderr] --> src/exercise.rs:109:20 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn compile(&self) -> Result { [INFO] [stderr] | ^^^^^ ---------------- the same lifetime is hidden here [INFO] [stderr] | | [INFO] [stderr] | the lifetime is elided here [INFO] [stderr] | [INFO] [stderr] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: use `'_` for type paths [INFO] [stderr] | [INFO] [stderr] 109 | pub fn compile(&self) -> Result, ExerciseOutput> { [INFO] [stderr] | ++++ [INFO] [stderr] [INFO] [stderr] warning: `rustlings` (bin "rustlings" test) generated 1 warning [INFO] [stderr] warning: `rustlings` (bin "rustlings") generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-8da759d9546a61d7) [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] [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: 0x6446c4226d12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x6446c4226d12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x6446c4226d12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x6446c4226d12 - ::fmt::hdcfcb6d4c8489523 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x6446c424cb33 - core::fmt::rt::Argument::fmt::h2c56b3114963061a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x6446c424cb33 - core::fmt::write::h8a494366950f23bb [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x6446c4223bd3 - std::io::default_write_fmt::h7b8824096454f323 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x6446c4223bd3 - std::io::Write::write_fmt::h4e71294925c334d0 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x6446c4226b62 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x6446c4228349 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27 [INFO] [stdout] 10: 0x6446c422817e - std::panicking::default_hook::h2c66fc99e962531d [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x6446c40ba544 - as core::ops::function::Fn>::call::hb6bd65493727d71a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 12: 0x6446c40ba544 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x6446c4228e1e - as core::ops::function::Fn>::call::h318e4efb8c1a5689 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 14: 0x6446c4228e1e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x6446c4228aea - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x6446c4227219 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x6446c422877d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x6446c424b580 - core::panicking::panic_fmt::h62f63d096dd276af [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x6446c424b9e6 - core::result::unwrap_failed::h95bc3f5a607b2c95 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1765:5 [INFO] [stdout] 20: 0x6446c407666c - core::result::Result::unwrap::hb0d84aff588e37f4 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1167:23 [INFO] [stdout] 21: 0x6446c407666c - rustlings::exercise::test::test_clean::ha13ed8128823c24a [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:36 [INFO] [stdout] 22: 0x6446c40765a7 - rustlings::exercise::test::test_clean::{{closure}}::hfb5d92702020a787 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:268:20 [INFO] [stdout] 23: 0x6446c4071066 - core::ops::function::FnOnce::call_once::hcff119725e9b3dcd [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 24: 0x6446c40bfdab - core::ops::function::FnOnce::call_once::h1f9474f1347fff52 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 25: 0x6446c40bfdab - test::__rust_begin_short_backtrace::ha52ab26e77157f03 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x6446c40beee5 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74 [INFO] [stdout] 27: 0x6446c40beee5 - as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x6446c40beee5 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x6446c40beee5 - std::panicking::catch_unwind::h6deb5fe1e91873c9 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x6446c40beee5 - std::panic::catch_unwind::hea0829b6b565654b [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x6446c40beee5 - test::run_test_in_process::hdc44dfecea3db21b [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x6446c40beee5 - test::run_test::{{closure}}::h0364ba59bf23f652 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x6446c4082ae4 - test::run_test::{{closure}}::h32730b304eec05da [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x6446c4082ae4 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x6446c40864ba - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x6446c40864ba - as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x6446c40864ba - std::panicking::catch_unwind::do_call::h163fe12cca9901c2 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x6446c40864ba - std::panicking::catch_unwind::he81557d0e17cc1bc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x6446c40864ba - std::panic::catch_unwind::hc2b8e79c20593955 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x6446c40864ba - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x6446c40864ba - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 42: 0x6446c422bd9f - as core::ops::function::FnOnce>::call_once::h5924238c754de3b8 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 43: 0x6446c422bd9f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17 [INFO] [stdout] 44: 0x732c6b5e3aa4 - [INFO] [stdout] 45: 0x732c6b670a34 - clone [INFO] [stdout] 46: 0x0 - [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: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/./rmetaSoRBBR\"\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: 0x6446c4226d12 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x6446c4226d12 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x6446c4226d12 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x6446c4226d12 - ::fmt::hdcfcb6d4c8489523 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x6446c424cb33 - core::fmt::rt::Argument::fmt::h2c56b3114963061a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x6446c424cb33 - core::fmt::write::h8a494366950f23bb [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x6446c4223bd3 - std::io::default_write_fmt::h7b8824096454f323 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x6446c4223bd3 - std::io::Write::write_fmt::h4e71294925c334d0 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x6446c4226b62 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x6446c4228349 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27 [INFO] [stdout] 10: 0x6446c422817e - std::panicking::default_hook::h2c66fc99e962531d [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9 [INFO] [stdout] 11: 0x6446c40ba544 - as core::ops::function::Fn>::call::hb6bd65493727d71a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 12: 0x6446c40ba544 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x6446c4228e1e - as core::ops::function::Fn>::call::h318e4efb8c1a5689 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9 [INFO] [stdout] 14: 0x6446c4228e1e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13 [INFO] [stdout] 15: 0x6446c4228aea - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13 [INFO] [stdout] 16: 0x6446c4227219 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x6446c422877d - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5 [INFO] [stdout] 18: 0x6446c424b580 - core::panicking::panic_fmt::h62f63d096dd276af [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14 [INFO] [stdout] 19: 0x6446c424b9e6 - core::result::unwrap_failed::h95bc3f5a607b2c95 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1765:5 [INFO] [stdout] 20: 0x6446c40774b8 - core::result::Result::unwrap::h3531a5745f41c15f [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1167:23 [INFO] [stdout] 21: 0x6446c40774b8 - rustlings::exercise::test::test_exercise_with_output::hb062218ad8c1974a [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:342:38 [INFO] [stdout] 22: 0x6446c40772c7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::ha565a31413120931 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:335:35 [INFO] [stdout] 23: 0x6446c4071026 - core::ops::function::FnOnce::call_once::hb0f0c6ed690b10fc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 24: 0x6446c40bfdab - core::ops::function::FnOnce::call_once::h1f9474f1347fff52 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 25: 0x6446c40bfdab - test::__rust_begin_short_backtrace::ha52ab26e77157f03 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18 [INFO] [stdout] 26: 0x6446c40beee5 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74 [INFO] [stdout] 27: 0x6446c40beee5 - as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 28: 0x6446c40beee5 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40 [INFO] [stdout] 29: 0x6446c40beee5 - std::panicking::catch_unwind::h6deb5fe1e91873c9 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19 [INFO] [stdout] 30: 0x6446c40beee5 - std::panic::catch_unwind::hea0829b6b565654b [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x6446c40beee5 - test::run_test_in_process::hdc44dfecea3db21b [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27 [INFO] [stdout] 32: 0x6446c40beee5 - test::run_test::{{closure}}::h0364ba59bf23f652 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43 [INFO] [stdout] 33: 0x6446c4082ae4 - test::run_test::{{closure}}::h32730b304eec05da [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41 [INFO] [stdout] 34: 0x6446c4082ae4 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x6446c40864ba - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x6446c40864ba - as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9 [INFO] [stdout] 37: 0x6446c40864ba - std::panicking::catch_unwind::do_call::h163fe12cca9901c2 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40 [INFO] [stdout] 38: 0x6446c40864ba - std::panicking::catch_unwind::he81557d0e17cc1bc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19 [INFO] [stdout] 39: 0x6446c40864ba - std::panic::catch_unwind::hc2b8e79c20593955 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x6446c40864ba - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x6446c40864ba - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5 [INFO] [stdout] 42: 0x6446c422bd9f - as core::ops::function::FnOnce>::call_once::h5924238c754de3b8 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9 [INFO] [stdout] 43: 0x6446c422bd9f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8 [INFO] [stdout] at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17 [INFO] [stdout] 44: 0x732c6b5e3aa4 - [INFO] [stdout] 45: 0x732c6b670a34 - clone [INFO] [stdout] 46: 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 0.25s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "b65c1a5139ae64cd03d043bca966249f2f2620975719c5d11267c0f3a2eaf08e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b65c1a5139ae64cd03d043bca966249f2f2620975719c5d11267c0f3a2eaf08e", kill_on_drop: false }` [INFO] [stdout] b65c1a5139ae64cd03d043bca966249f2f2620975719c5d11267c0f3a2eaf08e