[INFO] updating cached repository https://github.com/rjdellecese/rustlings_solutions [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 70c00a34b033a04442d1ba10393dac22063d3dc4 [INFO] testing rjdellecese/rustlings_solutions against 1.45.2 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjdellecese%2Frustlings_solutions" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rjdellecese/rustlings_solutions on toolchain 1.45.2 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rjdellecese/rustlings_solutions [INFO] finished tweaking git repo https://github.com/rjdellecese/rustlings_solutions [INFO] tweaked toml for git repo https://github.com/rjdellecese/rustlings_solutions written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/rjdellecese/rustlings_solutions already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 67f523632a611b9df045ceff5ce2faaa5212e1a44a1e593c42f441595132256e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "67f523632a611b9df045ceff5ce2faaa5212e1a44a1e593c42f441595132256e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "67f523632a611b9df045ceff5ce2faaa5212e1a44a1e593c42f441595132256e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "67f523632a611b9df045ceff5ce2faaa5212e1a44a1e593c42f441595132256e", kill_on_drop: false }` [INFO] [stdout] 67f523632a611b9df045ceff5ce2faaa5212e1a44a1e593c42f441595132256e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aa47f1dc81c5c2af16b08295c35647baaa9c34ef0f2699e55f4180f6c3ac09a7 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "aa47f1dc81c5c2af16b08295c35647baaa9c34ef0f2699e55f4180f6c3ac09a7", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.92 [INFO] [stderr] Compiling lock_api v0.2.0 [INFO] [stderr] Compiling regex-syntax v0.5.6 [INFO] [stderr] Compiling atty v0.2.11 [INFO] [stderr] Compiling termios v0.3.1 [INFO] [stderr] Compiling clicolors-control v1.0.0 [INFO] [stderr] Compiling inotify-sys v0.1.3 [INFO] [stderr] Compiling clicolors-control v0.2.0 [INFO] [stderr] Compiling filetime v0.2.5 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Compiling aho-corasick v0.6.10 [INFO] [stderr] Compiling mio-extras v2.0.5 [INFO] [stderr] Compiling serde_derive v1.0.92 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling inotify v0.6.1 [INFO] [stderr] Compiling notify v4.0.12 [INFO] [stderr] Compiling console v0.7.5 [INFO] [stderr] Compiling console v0.6.2 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Compiling indicatif v0.9.0 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v1.4.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 12s [INFO] running `Command { std: "docker" "inspect" "aa47f1dc81c5c2af16b08295c35647baaa9c34ef0f2699e55f4180f6c3ac09a7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa47f1dc81c5c2af16b08295c35647baaa9c34ef0f2699e55f4180f6c3ac09a7", kill_on_drop: false }` [INFO] [stdout] aa47f1dc81c5c2af16b08295c35647baaa9c34ef0f2699e55f4180f6c3ac09a7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 5f27566d3e5786bd1103220dfcf451ae32dcfe296fcd9b9cee13b11b3eaa0f4b [INFO] running `Command { std: "docker" "start" "-a" "5f27566d3e5786bd1103220dfcf451ae32dcfe296fcd9b9cee13b11b3eaa0f4b", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v0.2.8 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling predicates v1.0.1 [INFO] [stderr] Compiling serde_json v1.0.39 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v1.4.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 15.37s [INFO] running `Command { std: "docker" "inspect" "5f27566d3e5786bd1103220dfcf451ae32dcfe296fcd9b9cee13b11b3eaa0f4b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5f27566d3e5786bd1103220dfcf451ae32dcfe296fcd9b9cee13b11b3eaa0f4b", kill_on_drop: false }` [INFO] [stdout] 5f27566d3e5786bd1103220dfcf451ae32dcfe296fcd9b9cee13b11b3eaa0f4b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 18912f10ae43947fcfa99623ac69164eab225b53917151441fb9afc6a1fb7b1a [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "18912f10ae43947fcfa99623ac69164eab225b53917151441fb9afc6a1fb7b1a", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.15s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rustlings-ee1be2b7bb12f4fa [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test exercise::test::test_clean ... 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: Other, message: "Read-only file system" }', src/exercise.rs:71:9 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x5639d95ce985 - backtrace::backtrace::libunwind::trace::ha215bbf14e328799 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stdout] 1: 0x5639d95ce985 - backtrace::backtrace::trace_unsynchronized::h3384b099b135857a [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x5639d95ce985 - std::sys_common::backtrace::_print_fmt::hfec93740f7294682 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stdout] 3: 0x5639d95ce985 - ::fmt::h5fe20777f4174074 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] 4: 0x5639d95f68ec - core::fmt::write::he14c3177144df275 [INFO] [stdout] at src/libcore/fmt/mod.rs:1076 [INFO] [stdout] 5: 0x5639d9580085 - std::io::Write::write_fmt::ha866504c9998fe5e [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/io/mod.rs:1537 [INFO] [stdout] 6: 0x5639d95c8ca1 - std::io::impls::>::write_fmt::h8f0a2af895559593 [INFO] [stdout] at src/libstd/io/impls.rs:176 [INFO] [stdout] 7: 0x5639d95d11b0 - std::sys_common::backtrace::_print::h9cfa4c87526ba064 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stdout] 8: 0x5639d95d11b0 - std::sys_common::backtrace::print::h94936584848b3272 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x5639d95d11b0 - std::panicking::default_hook::{{closure}}::h733b20cc9b496e46 [INFO] [stdout] at src/libstd/panicking.rs:198 [INFO] [stdout] 10: 0x5639d95d0eaa - std::panicking::default_hook::h556d8cff6c12a651 [INFO] [stdout] at src/libstd/panicking.rs:215 [INFO] [stdout] 11: 0x5639d95d17e7 - std::panicking::rust_panic_with_hook::ha0c7ca5b39baa9d5 [INFO] [stdout] at src/libstd/panicking.rs:486 [INFO] [stdout] 12: 0x5639d95d13eb - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:388 [INFO] [stdout] 13: 0x5639d95f5281 - core::panicking::panic_fmt::h106d7128cbbc7cd2 [INFO] [stdout] at src/libcore/panicking.rs:101 [INFO] [stdout] 14: 0x5639d95f50a3 - core::option::expect_none_failed::hfcafefc70a7975bb [INFO] [stdout] at src/libcore/option.rs:1272 [INFO] [stdout] 15: 0x5639d957ed2b - core::result::Result::unwrap::h8828088c5c7bb1d1 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libcore/result.rs:1005 [INFO] [stdout] 16: 0x5639d957e524 - rustlings::exercise::test::test_clean::hbb2d255f17b2da12 [INFO] [stdout] at src/exercise.rs:71 [INFO] [stdout] 17: 0x5639d957e4ca - rustlings::exercise::test::test_clean::{{closure}}::h2109d796c649c9d2 [INFO] [stdout] at src/exercise.rs:70 [INFO] [stdout] 18: 0x5639d957ee5e - core::ops::function::FnOnce::call_once::h8a1eafcc23f76b9a [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libcore/ops/function.rs:232 [INFO] [stdout] 19: 0x5639d95a7272 - as core::ops::function::FnOnce>::call_once::h1efcc6525b6aa145 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/liballoc/boxed.rs:1076 [INFO] [stdout] 20: 0x5639d95a7272 - as core::ops::function::FnOnce<()>>::call_once::hafd7ae2f3c23f399 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panic.rs:318 [INFO] [stdout] 21: 0x5639d95a7272 - std::panicking::try::do_call::h83baf26f5fc8b0a5 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panicking.rs:297 [INFO] [stdout] 22: 0x5639d95a7272 - std::panicking::try::h8d28a678b90bb6ac [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panicking.rs:274 [INFO] [stdout] 23: 0x5639d95a7272 - std::panic::catch_unwind::h20734e8710644f59 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panic.rs:394 [INFO] [stdout] 24: 0x5639d95a7272 - test::run_test_in_process::h2c1fb2dd0c9013bb [INFO] [stdout] at src/libtest/lib.rs:541 [INFO] [stdout] 25: 0x5639d95a7272 - test::run_test::run_test_inner::{{closure}}::h7c58b7aefdb9adf3 [INFO] [stdout] at src/libtest/lib.rs:450 [INFO] [stdout] 26: 0x5639d957f546 - std::sys_common::backtrace::__rust_begin_short_backtrace::h498f21fd16bdff05 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/sys_common/backtrace.rs:130 [INFO] [stdout] 27: 0x5639d9584885 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hb35336a0a0430e6d [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/thread/mod.rs:475 [INFO] [stdout] 28: 0x5639d9584885 - as core::ops::function::FnOnce<()>>::call_once::h8569a86268e08ad1 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panic.rs:318 [INFO] [stdout] 29: 0x5639d9584885 - std::panicking::try::do_call::hcc5472a0f1ff31ac [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panicking.rs:297 [INFO] [stdout] 30: 0x5639d9584885 - std::panicking::try::h774b0c4fd770945c [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panicking.rs:274 [INFO] [stdout] 31: 0x5639d9584885 - std::panic::catch_unwind::hfaf7c6beb53320e7 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/panic.rs:394 [INFO] [stdout] 32: 0x5639d9584885 - std::thread::Builder::spawn_unchecked::{{closure}}::h481343a824704446 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libstd/thread/mod.rs:474 [INFO] [stdout] 33: 0x5639d9584885 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9dcbc7fc2c4c6c48 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libcore/ops/function.rs:232 [INFO] [stdout] 34: 0x5639d95d7bca - as core::ops::function::FnOnce>::call_once::hf311c88f1fadb9b8 [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/liballoc/boxed.rs:1076 [INFO] [stdout] 35: 0x5639d95d7bca - as core::ops::function::FnOnce>::call_once::h8cfb7235b81393ef [INFO] [stdout] at /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/liballoc/boxed.rs:1076 [INFO] [stdout] 36: 0x5639d95d7bca - std::sys::unix::thread::Thread::new::thread_start::hf745c8cf29a89648 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:87 [INFO] [stdout] 37: 0x7f83ce0e3609 - start_thread [INFO] [stdout] 38: 0x7f83ce225103 - __clone [INFO] [stdout] 39: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] exercise::test::test_clean [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--bin rustlings' [INFO] running `Command { std: "docker" "inspect" "18912f10ae43947fcfa99623ac69164eab225b53917151441fb9afc6a1fb7b1a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "18912f10ae43947fcfa99623ac69164eab225b53917151441fb9afc6a1fb7b1a", kill_on_drop: false }` [INFO] [stdout] 18912f10ae43947fcfa99623ac69164eab225b53917151441fb9afc6a1fb7b1a