[INFO] fetching crate mcs 0.1.1... [INFO] extracting crate mcs 0.1.1 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/mcs/0.1.1 [INFO] extracting crate mcs 0.1.1 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mcs/0.1.1 [INFO] validating manifest of mcs-0.1.1 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of mcs-0.1.1 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing mcs-0.1.1 [INFO] finished frobbing mcs-0.1.1 [INFO] frobbed toml for mcs-0.1.1 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/mcs/0.1.1/Cargo.toml [INFO] started frobbing mcs-0.1.1 [INFO] finished frobbing mcs-0.1.1 [INFO] frobbed toml for mcs-0.1.1 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mcs/0.1.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing mcs-0.1.1 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mcs/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"` [INFO] [stdout] 16f30c92ab5f2b198db095c551dd49823c3b7cb5a4c6ef78b2f390510819c5b4 [INFO] running `"docker" "start" "-a" "16f30c92ab5f2b198db095c551dd49823c3b7cb5a4c6ef78b2f390510819c5b4"` [INFO] [stderr] Compiling mcs v0.1.1 (/opt/crater/workdir) [INFO] [stderr] warning: unnecessary `unsafe` block [INFO] [stderr] --> src/mutex.rs:117:9 [INFO] [stderr] | [INFO] [stderr] 117 | unsafe { [INFO] [stderr] | ^^^^^^ unnecessary `unsafe` block [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_unsafe)] on by default [INFO] [stderr] [INFO] [stderr] warning: the feature `generic_param_attrs` has been stable since 1.27.0 and no longer requires an attribute to enable [INFO] [stderr] --> src/lib.rs:1:58 [INFO] [stderr] | [INFO] [stderr] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(stable_features)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.15s [INFO] running `"docker" "inspect" "16f30c92ab5f2b198db095c551dd49823c3b7cb5a4c6ef78b2f390510819c5b4"` [INFO] running `"docker" "rm" "-f" "16f30c92ab5f2b198db095c551dd49823c3b7cb5a4c6ef78b2f390510819c5b4"` [INFO] [stdout] 16f30c92ab5f2b198db095c551dd49823c3b7cb5a4c6ef78b2f390510819c5b4 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mcs/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"` [INFO] [stdout] 4e199bf45f9cb51b8dbfb05a4706cec5a06dd10bde197ecdda09702e4762f22d [INFO] running `"docker" "start" "-a" "4e199bf45f9cb51b8dbfb05a4706cec5a06dd10bde197ecdda09702e4762f22d"` [INFO] [stderr] Compiling mcs v0.1.1 (/opt/crater/workdir) [INFO] [stderr] warning: unnecessary `unsafe` block [INFO] [stderr] --> src/mutex.rs:117:9 [INFO] [stderr] | [INFO] [stderr] 117 | unsafe { [INFO] [stderr] | ^^^^^^ unnecessary `unsafe` block [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_unsafe)] on by default [INFO] [stderr] [INFO] [stderr] warning: the feature `generic_param_attrs` has been stable since 1.27.0 and no longer requires an attribute to enable [INFO] [stderr] --> src/lib.rs:1:58 [INFO] [stderr] | [INFO] [stderr] 1 | #![cfg_attr(feature = "unstable", feature(asm, const_fn, generic_param_attrs, dropck_eyepatch))] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(stable_features)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.17s [INFO] running `"docker" "inspect" "4e199bf45f9cb51b8dbfb05a4706cec5a06dd10bde197ecdda09702e4762f22d"` [INFO] running `"docker" "rm" "-f" "4e199bf45f9cb51b8dbfb05a4706cec5a06dd10bde197ecdda09702e4762f22d"` [INFO] [stdout] 4e199bf45f9cb51b8dbfb05a4706cec5a06dd10bde197ecdda09702e4762f22d [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mcs/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"` [INFO] [stdout] 6bdad6ce30c46158514921e99481aad7ea040565d5bc5e3340ab74f2b15c89ba [INFO] running `"docker" "start" "-a" "6bdad6ce30c46158514921e99481aad7ea040565d5bc5e3340ab74f2b15c89ba"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/crater/target/debug/deps/mcs-4a508c066e0d8017 [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test mutex::test::smoke ... ok [INFO] [stdout] test mutex::test::test_lock_unsized ... ok [INFO] [stdout] test mutex::test::try_lock ... ok [INFO] [stdout] test mutex::test::test_lock_arc_nested ... ok [INFO] [stdout] test mutex::test::test_into_inner_drop ... ok [INFO] [stdout] test mutex::test::test_into_inner ... ok [INFO] [stdout] test mutex::test::test_get_mut ... ok [INFO] [stdout] test mutex::test::lots_and_lots ... ok [INFO] [stderr] thread '' panicked at 'explicit panic', src/mutex.rs:384:13 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x556a2e6452eb - backtrace::backtrace::libunwind::trace::h98ebe34dc63b52e3 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x556a2e6452eb - backtrace::backtrace::trace_unsynchronized::hd041341a38fdc1ca [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x556a2e6452eb - std::sys_common::backtrace::_print::hc8c584aa09df5c15 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x556a2e6452eb - std::sys_common::backtrace::print::h4828f56ae571c1ad [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x556a2e6452eb - std::panicking::default_hook::{{closure}}::h69fce690c9f4b3d3 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x556a2e644fec - std::panicking::default_hook::h231e0e11400caad4 [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x556a2e645a60 - std::panicking::rust_panic_with_hook::h8c0d039880f491f2 [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x556a2e6455e2 - std::panicking::continue_panic_fmt::hd71af4da4e8103ab [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x556a2e6454c6 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x556a2e65baed - core::panicking::panic_fmt::h5b6e1f42b8cc12be [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x556a2e65ba2c - core::panicking::panic::hd245c691f8d145ad [INFO] [stderr] at src/libcore/panicking.rs:49 [INFO] [stderr] 11: 0x556a2e5f1c53 - mcs::mutex::test::test_lock_arc_access_in_unwind::{{closure}}::h1bf30fe164633ff3 [INFO] [stderr] at src/mutex.rs:384 [INFO] [stderr] 12: 0x556a2e5f49d3 - std::sys_common::backtrace::__rust_begin_short_backtrace::h05f421f1e09ce23f [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 13: 0x556a2e5eb35e - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::he8158f7fb713f4c7 [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libstd/thread/mod.rs:470 [INFO] [stderr] 14: 0x556a2e5e56f1 - as core::ops::function::FnOnce<()>>::call_once::h24cee72d85277223 [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libstd/panic.rs:309 [INFO] [stderr] 15: 0x556a2e5f2a35 - std::panicking::try::do_call::he398e539ad3f37cd [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libstd/panicking.rs:294 [INFO] [stderr] 16: 0x556a2e64867a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 17: 0x556a2e5f22e1 - std::panicking::try::ha5aecdecf4c3b468 [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libstd/panicking.rs:273 [INFO] [stderr] 18: 0x556a2e5e78b3 - std::panic::catch_unwind::hae96d1610f862cbe [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libstd/panic.rs:388 [INFO] [stderr] 19: 0x556a2e5ea7c6 - std::thread::Builder::spawn_unchecked::{{closure}}::h0172c6dc5237899a [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libstd/thread/mod.rs:469 [INFO] [stderr] 20: 0x556a2e5f6223 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9daa6c588c7b5a93 [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/libcore/ops/function.rs:231 [INFO] [stderr] 21: 0x556a2e63b37f - as core::ops::function::FnOnce>::call_once::h146d737fe1c8556c [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/liballoc/boxed.rs:746 [INFO] [stderr] 22: 0x556a2e647d30 - as core::ops::function::FnOnce>::call_once::h44ec2de830c4be09 [INFO] [stderr] at /rustc/e212b7d492c96d3837691ba29d32d5f468933fb8/src/liballoc/boxed.rs:746 [INFO] [stderr] 23: 0x556a2e647d30 - std::sys_common::thread::start_thread::hed7ed434f3e17f57 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 24: 0x556a2e647d30 - std::sys::unix::thread::Thread::new::thread_start::h62b89907378dc35b [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 25: 0x7fe73f4934a4 - start_thread [INFO] [stderr] 26: 0x7fe73efbed0f - __clone [INFO] [stderr] 27: 0x0 - [INFO] [stdout] test mutex::test::test_lock_arc_access_in_unwind ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests mcs [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/mutex.rs - mutex::Mutex (line 34) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "6bdad6ce30c46158514921e99481aad7ea040565d5bc5e3340ab74f2b15c89ba"` [INFO] running `"docker" "rm" "-f" "6bdad6ce30c46158514921e99481aad7ea040565d5bc5e3340ab74f2b15c89ba"` [INFO] [stdout] 6bdad6ce30c46158514921e99481aad7ea040565d5bc5e3340ab74f2b15c89ba