[INFO] crate mcs 0.1.1 is already in cache [INFO] extracting crate mcs 0.1.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/mcs/0.1.1 [INFO] extracting crate mcs 0.1.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/mcs/0.1.1 [INFO] validating manifest of mcs-0.1.1 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of mcs-0.1.1 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-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-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/mcs/0.1.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing mcs-0.1.1 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"` [INFO] [stdout] 4b5e14e77d73fee13c1bc257af8214801bd227e915a9bdf06500e106c44ebd29 [INFO] running `"docker" "start" "-a" "4b5e14e77d73fee13c1bc257af8214801bd227e915a9bdf06500e106c44ebd29"` [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 0.23s [INFO] running `"docker" "inspect" "4b5e14e77d73fee13c1bc257af8214801bd227e915a9bdf06500e106c44ebd29"` [INFO] running `"docker" "rm" "-f" "4b5e14e77d73fee13c1bc257af8214801bd227e915a9bdf06500e106c44ebd29"` [INFO] [stdout] 4b5e14e77d73fee13c1bc257af8214801bd227e915a9bdf06500e106c44ebd29 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"` [INFO] [stdout] 6d815ded735cdb6349d98c929f3377f9fb897116bfb2cc540d585f60a6b023b7 [INFO] running `"docker" "start" "-a" "6d815ded735cdb6349d98c929f3377f9fb897116bfb2cc540d585f60a6b023b7"` [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 1.19s [INFO] running `"docker" "inspect" "6d815ded735cdb6349d98c929f3377f9fb897116bfb2cc540d585f60a6b023b7"` [INFO] running `"docker" "rm" "-f" "6d815ded735cdb6349d98c929f3377f9fb897116bfb2cc540d585f60a6b023b7"` [INFO] [stdout] 6d815ded735cdb6349d98c929f3377f9fb897116bfb2cc540d585f60a6b023b7 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"` [INFO] [stdout] 45f6dc3f53b19a910299b69087a67078110a2e3fe3e1565090190dc3bdc2fad9 [INFO] running `"docker" "start" "-a" "45f6dc3f53b19a910299b69087a67078110a2e3fe3e1565090190dc3bdc2fad9"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/crater/target/debug/deps/mcs-1a7cf7b71dc9d91b [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test mutex::test::test_into_inner_drop ... ok [INFO] [stdout] test mutex::test::test_get_mut ... ok [INFO] [stdout] test mutex::test::test_into_inner ... ok [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] [stderr] thread '' panicked at 'explicit panic', src/mutex.rs:384:13 [INFO] [stderr] stack backtrace: [INFO] [stdout] test mutex::test::lots_and_lots ... ok [INFO] [stderr] 0: 0x55c048e12db3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hb587d2734f1dc7c5 [INFO] [stderr] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stderr] 1: 0x55c048e0eb3b - std::sys_common::backtrace::_print::he39717f7cfbd122d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:70 [INFO] [stderr] 2: 0x55c048e11a66 - std::panicking::default_hook::{{closure}}::hb7f1ae5149814e5e [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:58 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 3: 0x55c048e117e4 - std::panicking::default_hook::hc2b73d8ffc772b35 [INFO] [stderr] at src/libstd/panicking.rs:215 [INFO] [stderr] 4: 0x55c048e12170 - std::panicking::rust_panic_with_hook::h625072734a147d22 [INFO] [stderr] at src/libstd/panicking.rs:478 [INFO] [stderr] 5: 0x55c048e11cf1 - std::panicking::continue_panic_fmt::h3d3b66f689c3e04e [INFO] [stderr] at src/libstd/panicking.rs:385 [INFO] [stderr] 6: 0x55c048e11bd5 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:312 [INFO] [stderr] 7: 0x55c048e2446c - core::panicking::panic_fmt::h3dc182ff7fefc0c0 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 8: 0x55c048e243ab - core::panicking::panic::hf094d9f2e36d0aa6 [INFO] [stderr] at src/libcore/panicking.rs:49 [INFO] [stderr] 9: 0x55c048dbb812 - mcs::mutex::test::test_lock_arc_access_in_unwind::{{closure}}::hbeb278e5c3fae0be [INFO] [stderr] at src/mutex.rs:384 [INFO] [stdout] test mutex::test::test_lock_arc_access_in_unwind ... ok [INFO] [stderr] 10: 0x55c048dc0452 - std::sys_common::backtrace::__rust_begin_short_backtrace::h8691f8cba8214517 [INFO] [stdout] [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/sys_common/backtrace.rs:135 [INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stderr] 11: 0x55c048db2c9d - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::he4c3ed1f628c9998 [INFO] [stdout] [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/thread/mod.rs:469 [INFO] [stderr] 12: 0x55c048dabff0 - as core::ops::function::FnOnce<()>>::call_once::h0be0e3fa91ef4d2d [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panic.rs:309 [INFO] [stderr] 13: 0x55c048dbc134 - std::panicking::try::do_call::h8776910b677baeb4 [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:297 [INFO] [stderr] 14: 0x55c048e15329 - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:92 [INFO] [stderr] 15: 0x55c048dbbf2d - std::panicking::try::hed1ef24ff18f0354 [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:276 [INFO] [stderr] 16: 0x55c048dac262 - std::panic::catch_unwind::h30aa23016d5de767 [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panic.rs:388 [INFO] [stderr] 17: 0x55c048db2405 - std::thread::Builder::spawn_unchecked::{{closure}}::h2f8755c571752280 [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/thread/mod.rs:468 [INFO] [stderr] 18: 0x55c048db30a6 - >::call_box::hd3a081e78d72d1bc [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/liballoc/boxed.rs:734 [INFO] [stderr] 19: 0x55c048e14a4d - std::sys::unix::thread::Thread::new::thread_start::h60ff5f253b4125d5 [INFO] [stderr] at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/liballoc/boxed.rs:744 [INFO] [stderr] at src/libstd/sys_common/thread.rs:14 [INFO] [stderr] at src/libstd/sys/unix/thread.rs:81 [INFO] [stderr] 20: 0x7fcb6e10a493 - start_thread [INFO] [stderr] 21: 0x7fcb6dc35ace - __clone [INFO] [stderr] 22: 0x0 - [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" "45f6dc3f53b19a910299b69087a67078110a2e3fe3e1565090190dc3bdc2fad9"` [INFO] running `"docker" "rm" "-f" "45f6dc3f53b19a910299b69087a67078110a2e3fe3e1565090190dc3bdc2fad9"` [INFO] [stdout] 45f6dc3f53b19a910299b69087a67078110a2e3fe3e1565090190dc3bdc2fad9