[INFO] cloning repository https://github.com/joychae/rustlings-answers [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joychae/rustlings-answers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoychae%2Frustlings-answers", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoychae%2Frustlings-answers'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5b5c38266caf986aeaa666269aff76455d10ace5 [INFO] testing joychae/rustlings-answers against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoychae%2Frustlings-answers" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/joychae/rustlings-answers [INFO] finished tweaking git repo https://github.com/joychae/rustlings-answers [INFO] tweaked toml for git repo https://github.com/joychae/rustlings-answers written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/joychae/rustlings-answers on toolchain caccb4d0368bd918ef6668af8e13834d07040417 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/joychae/rustlings-answers 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded net2 v0.2.37 [INFO] [stderr] Downloaded predicates v1.0.8 [INFO] [stderr] Downloaded notify v4.0.17 [INFO] [stderr] Downloaded toml v0.4.10 [INFO] [stderr] Downloaded argh_derive v0.1.5 [INFO] [stderr] Downloaded serde_derive v1.0.129 [INFO] [stderr] Downloaded escargot v0.4.0 [INFO] [stderr] Downloaded argh_shared v0.1.5 [INFO] [stderr] Downloaded assert_cmd v0.11.1 [INFO] [stderr] Downloaded inotify v0.7.1 [INFO] [stderr] Downloaded indicatif v0.10.3 [INFO] [stderr] Downloaded redox_syscall v0.2.10 [INFO] [stderr] Downloaded serde_json v1.0.66 [INFO] [stderr] Downloaded syn v1.0.75 [INFO] [stderr] Downloaded termios v0.3.3 [INFO] [stderr] Downloaded filetime v0.2.15 [INFO] [stderr] Downloaded fsevent v0.4.0 [INFO] [stderr] Downloaded fsevent-sys v2.0.1 [INFO] [stderr] Downloaded serde v1.0.129 [INFO] [stderr] Downloaded predicates-tree v1.0.3 [INFO] [stderr] Downloaded clicolors-control v1.0.1 [INFO] [stderr] Downloaded libc v0.2.100 [INFO] [stderr] Downloaded number_prefix v0.2.8 [INFO] [stderr] Downloaded argh v0.1.5 [INFO] [stderr] Downloaded instant v0.1.10 [INFO] [stderr] Downloaded slab v0.4.4 [INFO] [stderr] Downloaded console v0.7.7 [INFO] [stderr] Downloaded memchr v2.4.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 36cba3aee75e1ee7ebad72e036e0e330829b7468ac5d2370c90c3f98f7568171 [INFO] running `Command { std: "docker" "start" "-a" "36cba3aee75e1ee7ebad72e036e0e330829b7468ac5d2370c90c3f98f7568171", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "36cba3aee75e1ee7ebad72e036e0e330829b7468ac5d2370c90c3f98f7568171", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "36cba3aee75e1ee7ebad72e036e0e330829b7468ac5d2370c90c3f98f7568171", kill_on_drop: false }` [INFO] [stdout] 36cba3aee75e1ee7ebad72e036e0e330829b7468ac5d2370c90c3f98f7568171 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8c4d86252b379a36380a33b0fb00772d5db4c0deb9976c8ec3cec4bea89f5ca5 [INFO] running `Command { std: "docker" "start" "-a" "8c4d86252b379a36380a33b0fb00772d5db4c0deb9976c8ec3cec4bea89f5ca5", 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 memchr v2.4.1 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling serde_derive v1.0.129 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling serde v1.0.129 [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 lazycell v1.3.0 [INFO] [stderr] Compiling walkdir v2.3.2 [INFO] [stderr] Compiling num-traits v0.2.14 [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 iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling terminal_size v0.1.17 [INFO] [stderr] Compiling inotify-sys v0.1.5 [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 atty v0.2.14 [INFO] [stderr] Compiling inotify v0.7.1 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling number_prefix v0.2.8 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v4.0.17 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling console v0.14.1 [INFO] [stderr] Compiling console v0.7.7 [INFO] [stderr] Compiling argh_derive v0.1.5 [INFO] [stderr] Compiling indicatif v0.10.3 [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] [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 7.76s [INFO] running `Command { std: "docker" "inspect" "8c4d86252b379a36380a33b0fb00772d5db4c0deb9976c8ec3cec4bea89f5ca5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8c4d86252b379a36380a33b0fb00772d5db4c0deb9976c8ec3cec4bea89f5ca5", kill_on_drop: false }` [INFO] [stdout] 8c4d86252b379a36380a33b0fb00772d5db4c0deb9976c8ec3cec4bea89f5ca5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 368440f9ffbb405f32e20be89aa38bf4ed155059f58275a1a5ee807ecb821f44 [INFO] running `Command { std: "docker" "start" "-a" "368440f9ffbb405f32e20be89aa38bf4ed155059f58275a1a5ee807ecb821f44", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_json v1.0.66 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling predicates-core v1.0.2 [INFO] [stderr] Compiling float-cmp v0.8.0 [INFO] [stderr] Compiling treeline v0.1.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling difference v2.0.0 [INFO] [stderr] Compiling glob 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 predicates v1.0.8 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v4.6.0 (/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 1.73s [INFO] running `Command { std: "docker" "inspect" "368440f9ffbb405f32e20be89aa38bf4ed155059f58275a1a5ee807ecb821f44", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "368440f9ffbb405f32e20be89aa38bf4ed155059f58275a1a5ee807ecb821f44", kill_on_drop: false }` [INFO] [stdout] 368440f9ffbb405f32e20be89aa38bf4ed155059f58275a1a5ee807ecb821f44 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] f5b11d5d96b7cf12fb0d2a13c7f225c24d246fb2091e63d0ea6151ba2cba318d [INFO] running `Command { std: "docker" "start" "-a" "f5b11d5d96b7cf12fb0d2a13c7f225c24d246fb2091e63d0ea6151ba2cba318d", 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") generated 1 warning (run `cargo fix --bin "rustlings"` to apply 1 suggestion) [INFO] [stderr] warning: `rustlings` (bin "rustlings" test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustlings-7390ecdb511260a9) [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' (25) panicked at src/exercise.rs:270:36: [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: 0x5728d01e0562 - std::backtrace_rs::backtrace::libunwind::trace::h76861be37b31432e [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5728d01e0562 - std::backtrace_rs::backtrace::trace_unsynchronized::h58d4003082192c17 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5728d01e0562 - std::sys::backtrace::_print_fmt::hfe5857a399620d2a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5728d01e0562 - ::fmt::h52160e9da139e442 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5728d01f13df - core::fmt::rt::Argument::fmt::h66fe6fef9ecca14a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5728d01f13df - core::fmt::write::hf09a056a304e021a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x5728d01ad211 - std::io::default_write_fmt::hf1a3645468226e09 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5728d01ad211 - std::io::Write::write_fmt::ha5ada6d6a18bde33 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5728d01b9522 - std::sys::backtrace::BacktraceLock::print::h15104dbcf0fd1f14 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5728d01be11f - std::panicking::default_hook::{{closure}}::h0fa6cd8dbe0dd76b [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5728d01bdfb1 - std::panicking::default_hook::h8d20506cf72e4831 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x5728d0048afe - as core::ops::function::Fn>::call::h3d020961abd83a77 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1987:9 [INFO] [stdout] 12: 0x5728d0048afe - test::test_main_with_exit_callback::{{closure}}::h720dd2fdb2ddcdca [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5728d01be7df - as core::ops::function::Fn>::call::h75334a5fed245bca [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1987:9 [INFO] [stdout] 14: 0x5728d01be7df - std::panicking::panic_with_hook::h746880a052e02c85 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x5728d01be63a - std::panicking::panic_handler::{{closure}}::h14b95830f89d14b3 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x5728d01b9659 - std::sys::backtrace::__rust_end_short_backtrace::h7ddaac0e9609a83d [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x5728d01a155d - __rustc[76f7e7187978e2f8]::rust_begin_unwind [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x5728d01f97a0 - core::panicking::panic_fmt::heb245a301f4395db [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panicking.rs:78:14 [INFO] [stdout] 19: 0x5728d01f8bc6 - core::result::unwrap_failed::h91bd1e1731f928fc [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/result.rs:1855:5 [INFO] [stdout] 20: 0x5728d002041c - core::result::Result::unwrap::h41c4297e169c3068 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/result.rs:1226:23 [INFO] [stdout] 21: 0x5728d002041c - rustlings::exercise::test::test_clean::h27672f34c61b342e [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:270:36 [INFO] [stdout] 22: 0x5728d00207f7 - rustlings::exercise::test::test_clean::{{closure}}::h6ea9a4b71237d9f0 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:269:20 [INFO] [stdout] 23: 0x5728d0017f46 - core::ops::function::FnOnce::call_once::h3f2e55105ce743f2 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5728d004892b - core::ops::function::FnOnce::call_once::h933a5d67211adff2 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5728d004892b - test::__rust_begin_short_backtrace::h2157af19b0990ffb [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x5728d005e505 - test::run_test_in_process::{{closure}}::hc3b17e0f313c900a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x5728d005e505 - as core::ops::function::FnOnce<()>>::call_once::ha23e4b490259273c [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x5728d005e505 - std::panicking::catch_unwind::do_call::h8dc9d5da83792f7a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x5728d005e505 - std::panicking::catch_unwind::h0d8461330de4a18b [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x5728d005e505 - std::panic::catch_unwind::h0321b51397bf9811 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5728d005e505 - test::run_test_in_process::hcaaa440fdbe4a513 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x5728d005e505 - test::run_test::{{closure}}::h6345da602b85d6c3 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x5728d0034d14 - test::run_test::{{closure}}::h90a3b75194d37b5d [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x5728d0034d14 - std::sys::backtrace::__rust_begin_short_backtrace::hae41a17001f53ede [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x5728d00385da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h6ea895368381e0b1 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x5728d00385da - as core::ops::function::FnOnce<()>>::call_once::h9c39013633bb9237 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x5728d00385da - std::panicking::catch_unwind::do_call::hac7dba9ee4d99108 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x5728d00385da - std::panicking::catch_unwind::h73015d00e4866ebc [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x5728d00385da - std::panic::catch_unwind::h6f7b38e188aa4f62 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5728d00385da - std::thread::Builder::spawn_unchecked_::{{closure}}::h969a6a2dc1856df7 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x5728d00385da - core::ops::function::FnOnce::call_once{{vtable.shim}}::h269ad1ff23e72122 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5728d01b46bf - as core::ops::function::FnOnce>::call_once::hdd09a470c130e806 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1973:9 [INFO] [stdout] 43: 0x5728d01b46bf - std::sys::thread::unix::Thread::new::thread_start::h14ea1ba6e320367c [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 44: 0x7d579cbbaaa4 - [INFO] [stdout] 45: 0x7d579cc47a34 - 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' (26) panicked at src/exercise.rs:343:38: [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/./rmetaSSrFzL\"\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: 0x5728d01e0562 - std::backtrace_rs::backtrace::libunwind::trace::h76861be37b31432e [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stdout] 1: 0x5728d01e0562 - std::backtrace_rs::backtrace::trace_unsynchronized::h58d4003082192c17 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stdout] 2: 0x5728d01e0562 - std::sys::backtrace::_print_fmt::hfe5857a399620d2a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:66:9 [INFO] [stdout] 3: 0x5728d01e0562 - ::fmt::h52160e9da139e442 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:39:26 [INFO] [stdout] 4: 0x5728d01f13df - core::fmt::rt::Argument::fmt::h66fe6fef9ecca14a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/rt.rs:173:76 [INFO] [stdout] 5: 0x5728d01f13df - core::fmt::write::hf09a056a304e021a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/fmt/mod.rs:1468:25 [INFO] [stdout] 6: 0x5728d01ad211 - std::io::default_write_fmt::hf1a3645468226e09 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:639:11 [INFO] [stdout] 7: 0x5728d01ad211 - std::io::Write::write_fmt::ha5ada6d6a18bde33 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/io/mod.rs:1954:13 [INFO] [stdout] 8: 0x5728d01b9522 - std::sys::backtrace::BacktraceLock::print::h15104dbcf0fd1f14 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:42:9 [INFO] [stdout] 9: 0x5728d01be11f - std::panicking::default_hook::{{closure}}::h0fa6cd8dbe0dd76b [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:301:27 [INFO] [stdout] 10: 0x5728d01bdfb1 - std::panicking::default_hook::h8d20506cf72e4831 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:325:9 [INFO] [stdout] 11: 0x5728d0048afe - as core::ops::function::Fn>::call::h3d020961abd83a77 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1987:9 [INFO] [stdout] 12: 0x5728d0048afe - test::test_main_with_exit_callback::{{closure}}::h720dd2fdb2ddcdca [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:145:21 [INFO] [stdout] 13: 0x5728d01be7df - as core::ops::function::Fn>::call::h75334a5fed245bca [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1987:9 [INFO] [stdout] 14: 0x5728d01be7df - std::panicking::panic_with_hook::h746880a052e02c85 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:842:13 [INFO] [stdout] 15: 0x5728d01be63a - std::panicking::panic_handler::{{closure}}::h14b95830f89d14b3 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:707:13 [INFO] [stdout] 16: 0x5728d01b9659 - std::sys::backtrace::__rust_end_short_backtrace::h7ddaac0e9609a83d [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:174:18 [INFO] [stdout] 17: 0x5728d01a155d - __rustc[76f7e7187978e2f8]::rust_begin_unwind [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:698:5 [INFO] [stdout] 18: 0x5728d01f97a0 - core::panicking::panic_fmt::heb245a301f4395db [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panicking.rs:78:14 [INFO] [stdout] 19: 0x5728d01f8bc6 - core::result::unwrap_failed::h91bd1e1731f928fc [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/result.rs:1855:5 [INFO] [stdout] 20: 0x5728d0021254 - core::result::Result::unwrap::hbb466acef9a45250 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/result.rs:1226:23 [INFO] [stdout] 21: 0x5728d0021254 - rustlings::exercise::test::test_exercise_with_output::h984338f999634456 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:343:38 [INFO] [stdout] 22: 0x5728d00214d7 - rustlings::exercise::test::test_exercise_with_output::{{closure}}::h22122ae124c50cc4 [INFO] [stdout] at /opt/rustwide/workdir/src/exercise.rs:336:35 [INFO] [stdout] 23: 0x5728d0018016 - core::ops::function::FnOnce::call_once::h8b6c8feed7fb74a1 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 24: 0x5728d004892b - core::ops::function::FnOnce::call_once::h933a5d67211adff2 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 25: 0x5728d004892b - test::__rust_begin_short_backtrace::h2157af19b0990ffb [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:663:18 [INFO] [stdout] 26: 0x5728d005e505 - test::run_test_in_process::{{closure}}::hc3b17e0f313c900a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:686:74 [INFO] [stdout] 27: 0x5728d005e505 - as core::ops::function::FnOnce<()>>::call_once::ha23e4b490259273c [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 28: 0x5728d005e505 - std::panicking::catch_unwind::do_call::h8dc9d5da83792f7a [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40 [INFO] [stdout] 29: 0x5728d005e505 - std::panicking::catch_unwind::h0d8461330de4a18b [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19 [INFO] [stdout] 30: 0x5728d005e505 - std::panic::catch_unwind::h0321b51397bf9811 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14 [INFO] [stdout] 31: 0x5728d005e505 - test::run_test_in_process::hcaaa440fdbe4a513 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:686:27 [INFO] [stdout] 32: 0x5728d005e505 - test::run_test::{{closure}}::h6345da602b85d6c3 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:607:43 [INFO] [stdout] 33: 0x5728d0034d14 - test::run_test::{{closure}}::h90a3b75194d37b5d [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/test/src/lib.rs:637:41 [INFO] [stdout] 34: 0x5728d0034d14 - std::sys::backtrace::__rust_begin_short_backtrace::hae41a17001f53ede [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/backtrace.rs:158:18 [INFO] [stdout] 35: 0x5728d00385da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h6ea895368381e0b1 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/thread/mod.rs:559:17 [INFO] [stdout] 36: 0x5728d00385da - as core::ops::function::FnOnce<()>>::call_once::h9c39013633bb9237 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/panic/unwind_safe.rs:274:9 [INFO] [stdout] 37: 0x5728d00385da - std::panicking::catch_unwind::do_call::hac7dba9ee4d99108 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:590:40 [INFO] [stdout] 38: 0x5728d00385da - std::panicking::catch_unwind::h73015d00e4866ebc [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panicking.rs:553:19 [INFO] [stdout] 39: 0x5728d00385da - std::panic::catch_unwind::h6f7b38e188aa4f62 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/panic.rs:359:14 [INFO] [stdout] 40: 0x5728d00385da - std::thread::Builder::spawn_unchecked_::{{closure}}::h969a6a2dc1856df7 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/thread/mod.rs:557:30 [INFO] [stdout] 41: 0x5728d00385da - core::ops::function::FnOnce::call_once{{vtable.shim}}::h269ad1ff23e72122 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/core/src/ops/function.rs:250:5 [INFO] [stdout] 42: 0x5728d01b46bf - as core::ops::function::FnOnce>::call_once::hdd09a470c130e806 [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/alloc/src/boxed.rs:1973:9 [INFO] [stdout] 43: 0x5728d01b46bf - std::sys::thread::unix::Thread::new::thread_start::h14ea1ba6e320367c [INFO] [stdout] at /rustc/caccb4d0368bd918ef6668af8e13834d07040417/library/std/src/sys/thread/unix.rs:126:17 [INFO] [stdout] 44: 0x7d579cbbaaa4 - [INFO] [stdout] 45: 0x7d579cc47a34 - 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 0.04s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass `--bin rustlings` [INFO] running `Command { std: "docker" "inspect" "f5b11d5d96b7cf12fb0d2a13c7f225c24d246fb2091e63d0ea6151ba2cba318d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5b11d5d96b7cf12fb0d2a13c7f225c24d246fb2091e63d0ea6151ba2cba318d", kill_on_drop: false }` [INFO] [stdout] f5b11d5d96b7cf12fb0d2a13c7f225c24d246fb2091e63d0ea6151ba2cba318d