[INFO] updating cached repository https://github.com/simonschmoll/rustling-solution [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] 5876783fe023a8cd8d9167550f7773de4f47346e [INFO] testing simonschmoll/rustling-solution against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimonschmoll%2Frustling-solution" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/simonschmoll/rustling-solution on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/simonschmoll/rustling-solution [INFO] finished tweaking git repo https://github.com/simonschmoll/rustling-solution [INFO] tweaked toml for git repo https://github.com/simonschmoll/rustling-solution written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/simonschmoll/rustling-solution already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f5b0276aa635c4b1af6bc35cc505a0a0e3e2cb6459666e9f0e467a1d6b9ba8da [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" "f5b0276aa635c4b1af6bc35cc505a0a0e3e2cb6459666e9f0e467a1d6b9ba8da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f5b0276aa635c4b1af6bc35cc505a0a0e3e2cb6459666e9f0e467a1d6b9ba8da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5b0276aa635c4b1af6bc35cc505a0a0e3e2cb6459666e9f0e467a1d6b9ba8da", kill_on_drop: false }` [INFO] [stdout] f5b0276aa635c4b1af6bc35cc505a0a0e3e2cb6459666e9f0e467a1d6b9ba8da [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] abbb026661602c019f58d0e901677a947c45bb5646480f2aa96a771a7f24a6c8 [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" "abbb026661602c019f58d0e901677a947c45bb5646480f2aa96a771a7f24a6c8", kill_on_drop: false }` [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling regex-syntax v0.5.6 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling aho-corasick v0.6.10 [INFO] [stderr] Compiling quote v0.6.12 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling clicolors-control v1.0.0 [INFO] [stderr] Compiling clicolors-control v0.2.0 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling inotify v0.6.1 [INFO] [stderr] Compiling syn v0.15.34 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling mio-extras v2.0.5 [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 serde_derive v1.0.92 [INFO] [stderr] Compiling indicatif v0.9.0 [INFO] [stderr] Compiling serde v1.0.92 [INFO] [stderr] Compiling toml v0.4.10 [INFO] [stderr] Compiling rustlings v2.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 06s [INFO] running `Command { std: "docker" "inspect" "abbb026661602c019f58d0e901677a947c45bb5646480f2aa96a771a7f24a6c8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "abbb026661602c019f58d0e901677a947c45bb5646480f2aa96a771a7f24a6c8", kill_on_drop: false }` [INFO] [stdout] abbb026661602c019f58d0e901677a947c45bb5646480f2aa96a771a7f24a6c8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c269fca34dbf7c26691ac7e20d5d5bc00ebfd65db918fa529fd4f84cc7c765ea [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" "c269fca34dbf7c26691ac7e20d5d5bc00ebfd65db918fa529fd4f84cc7c765ea", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling serde_json v1.0.39 [INFO] [stderr] Compiling float-cmp v0.4.0 [INFO] [stderr] Compiling predicates v1.0.1 [INFO] [stderr] Compiling escargot v0.4.0 [INFO] [stderr] Compiling assert_cmd v0.11.1 [INFO] [stderr] Compiling rustlings v2.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 18.09s [INFO] running `Command { std: "docker" "inspect" "c269fca34dbf7c26691ac7e20d5d5bc00ebfd65db918fa529fd4f84cc7c765ea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c269fca34dbf7c26691ac7e20d5d5bc00ebfd65db918fa529fd4f84cc7c765ea", kill_on_drop: false }` [INFO] [stdout] c269fca34dbf7c26691ac7e20d5d5bc00ebfd65db918fa529fd4f84cc7c765ea [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 13960c9319a9b0b66677520546774753af9ec4e1c505f5a29d4571facb94e1e7 [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" "13960c9319a9b0b66677520546774753af9ec4e1c505f5a29d4571facb94e1e7", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.45s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/rustlings-6d8c74122373af40 [INFO] [stdout] [INFO] [stdout] running 3 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] [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:131:36 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55fe9c403665 - backtrace::backtrace::libunwind::trace::hea89dfbbfe67f40d [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stdout] 1: 0x55fe9c403665 - backtrace::backtrace::trace_unsynchronized::h0513dd713d7644d4 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x55fe9c403665 - std::sys_common::backtrace::_print_fmt::h040abae64e4a24a9 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stdout] 3: 0x55fe9c403665 - ::fmt::hb4bdb37c3c335733 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] 4: 0x55fe9c42b8ec - core::fmt::write::h540ac4a6a1232abc [INFO] [stdout] at src/libcore/fmt/mod.rs:1076 [INFO] [stdout] 5: 0x55fe9c22a065 - std::io::Write::write_fmt::h4be0daababb55bba [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/io/mod.rs:1539 [INFO] [stdout] 6: 0x55fe9c3fdc81 - std::io::impls::>::write_fmt::h83c1e1aa73f374f5 [INFO] [stdout] at src/libstd/io/impls.rs:176 [INFO] [stdout] 7: 0x55fe9c405dc0 - std::sys_common::backtrace::_print::hb55cc635eaf1882e [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stdout] 8: 0x55fe9c405dc0 - std::sys_common::backtrace::print::h2b2218fa55714084 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x55fe9c405dc0 - std::panicking::default_hook::{{closure}}::h578517c025765cf3 [INFO] [stdout] at src/libstd/panicking.rs:198 [INFO] [stdout] 10: 0x55fe9c405aba - std::panicking::default_hook::h4cafc94c2fc640fb [INFO] [stdout] at src/libstd/panicking.rs:214 [INFO] [stdout] 11: 0x55fe9c406403 - std::panicking::rust_panic_with_hook::h3eeb5001beeca5c3 [INFO] [stdout] at src/libstd/panicking.rs:526 [INFO] [stdout] 12: 0x55fe9c405ffb - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:437 [INFO] [stdout] 13: 0x55fe9c42a281 - core::panicking::panic_fmt::h78830ea6a34e7206 [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 14: 0x55fe9c42a0a3 - core::option::expect_none_failed::hf79bbb5ca7e09e08 [INFO] [stdout] at src/libcore/option.rs:1269 [INFO] [stdout] 15: 0x55fe9c2264db - core::result::Result::unwrap::hdf07b4d121ebdda6 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libcore/result.rs:1005 [INFO] [stdout] 16: 0x55fe9c2223e4 - rustlings::exercise::test::test_clean::h52cb2c527f8189d6 [INFO] [stdout] at src/exercise.rs:131 [INFO] [stdout] 17: 0x55fe9c22238a - rustlings::exercise::test::test_clean::{{closure}}::h2473e10c40494ae7 [INFO] [stdout] at src/exercise.rs:130 [INFO] [stdout] 18: 0x55fe9c225e3e - core::ops::function::FnOnce::call_once::h4dc10fd2ab9d65a3 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libcore/ops/function.rs:233 [INFO] [stdout] 19: 0x55fe9c2515dc - as core::ops::function::FnOnce>::call_once::h8340ba6798e0c4ff [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/liballoc/boxed.rs:1081 [INFO] [stdout] 20: 0x55fe9c2515dc - as core::ops::function::FnOnce<()>>::call_once::h5590e98676605094 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panic.rs:318 [INFO] [stdout] 21: 0x55fe9c2515dc - std::panicking::try::do_call::hd8680a2dbb0ed3c4 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panicking.rs:348 [INFO] [stdout] 22: 0x55fe9c2515dc - std::panicking::try::h46b4de2d705e7a8d [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panicking.rs:325 [INFO] [stdout] 23: 0x55fe9c2515dc - std::panic::catch_unwind::h059b3f06991e0a9c [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panic.rs:394 [INFO] [stdout] 24: 0x55fe9c2515dc - test::run_test_in_process::h5ae08a65430494a4 [INFO] [stdout] at src/libtest/lib.rs:541 [INFO] [stdout] 25: 0x55fe9c2515dc - test::run_test::run_test_inner::{{closure}}::h4b36073838376ae8 [INFO] [stdout] at src/libtest/lib.rs:450 [INFO] [stdout] 26: 0x55fe9c229556 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0169d0be588b8bf0 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/sys_common/backtrace.rs:130 [INFO] [stdout] 27: 0x55fe9c22e545 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h71bfc37e887d3973 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/thread/mod.rs:475 [INFO] [stdout] 28: 0x55fe9c22e545 - as core::ops::function::FnOnce<()>>::call_once::h36c65072907dc180 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panic.rs:318 [INFO] [stdout] 29: 0x55fe9c22e545 - std::panicking::try::do_call::h4e0f426e17cd216c [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panicking.rs:348 [INFO] [stdout] 30: 0x55fe9c22e545 - std::panicking::try::hd05e4ef6b4303d29 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panicking.rs:325 [INFO] [stdout] 31: 0x55fe9c22e545 - std::panic::catch_unwind::h19a1127ec729c5dd [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panic.rs:394 [INFO] [stdout] 32: 0x55fe9c22e545 - std::thread::Builder::spawn_unchecked::{{closure}}::h011300735f06b1e2 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/thread/mod.rs:474 [INFO] [stdout] 33: 0x55fe9c22e545 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h1e3c55f31f1d122e [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libcore/ops/function.rs:233 [INFO] [stdout] 34: 0x55fe9c40c6ea - as core::ops::function::FnOnce>::call_once::hc0e15d78a519721e [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/liballoc/boxed.rs:1081 [INFO] [stdout] 35: 0x55fe9c40c6ea - as core::ops::function::FnOnce>::call_once::h211da8fffb09f192 [INFO] [stdout] at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/liballoc/boxed.rs:1081 [INFO] [stdout] 36: 0x55fe9c40c6ea - std::sys::unix::thread::Thread::new::thread_start::h29594ddebf23e421 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:87 [INFO] [stdout] 37: 0x7f7f421d5609 - start_thread [INFO] [stdout] 38: 0x7f7f42317103 - __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. 2 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" "13960c9319a9b0b66677520546774753af9ec4e1c505f5a29d4571facb94e1e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "13960c9319a9b0b66677520546774753af9ec4e1c505f5a29d4571facb94e1e7", kill_on_drop: false }` [INFO] [stdout] 13960c9319a9b0b66677520546774753af9ec4e1c505f5a29d4571facb94e1e7