[INFO] crate mcs 0.1.1 is already in cache [INFO] testing mcs-0.1.1 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274 [INFO] extracting crate mcs 0.1.1 into /workspace/builds/worker-6/source [INFO] validating manifest of crates.io crate mcs 0.1.1 on toolchain 28742a1146f10a4f09369baad027a464acb7a766 [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate mcs 0.1.1 [INFO] finished tweaking crates.io crate mcs 0.1.1 [INFO] tweaked toml for crates.io crate mcs 0.1.1 written to /workspace/builds/worker-6/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 31d3224dac02e9ec485f4c55ff530bd762e03715980e7090680d921d35fdbd0f [INFO] running `"docker" "start" "-a" "31d3224dac02e9ec485f4c55ff530bd762e03715980e7090680d921d35fdbd0f"` [INFO] [stderr] Compiling mcs v0.1.1 (/opt/rustwide/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] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.44s [INFO] running `"docker" "inspect" "31d3224dac02e9ec485f4c55ff530bd762e03715980e7090680d921d35fdbd0f"` [INFO] running `"docker" "rm" "-f" "31d3224dac02e9ec485f4c55ff530bd762e03715980e7090680d921d35fdbd0f"` [INFO] [stdout] 31d3224dac02e9ec485f4c55ff530bd762e03715980e7090680d921d35fdbd0f [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] a383cbb87a8103e7a50c191f9911dfa2e43727458cfc30284e6baa3848d92087 [INFO] running `"docker" "start" "-a" "a383cbb87a8103e7a50c191f9911dfa2e43727458cfc30284e6baa3848d92087"` [INFO] [stderr] Compiling lazy_static v0.2.11 [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] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Compiling mcs v0.1.1 (/opt/rustwide/workdir) [INFO] [stderr] warning: use of deprecated item 'lazy_static::lazy::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/mutex.rs:281:9 [INFO] [stderr] | [INFO] [stderr] 281 | / lazy_static! { [INFO] [stderr] 282 | | static ref LOCK: Mutex = Mutex::new(0); [INFO] [stderr] 283 | | } [INFO] [stderr] | |_________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [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] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.97s [INFO] running `"docker" "inspect" "a383cbb87a8103e7a50c191f9911dfa2e43727458cfc30284e6baa3848d92087"` [INFO] running `"docker" "rm" "-f" "a383cbb87a8103e7a50c191f9911dfa2e43727458cfc30284e6baa3848d92087"` [INFO] [stdout] a383cbb87a8103e7a50c191f9911dfa2e43727458cfc30284e6baa3848d92087 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c65a31d0f0391f727421d7e577669cd064854c3256e0ad5a0a56cec9e1f8eaa6 [INFO] running `"docker" "start" "-a" "c65a31d0f0391f727421d7e577669cd064854c3256e0ad5a0a56cec9e1f8eaa6"` [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] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'lazy_static::lazy::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/mutex.rs:281:9 [INFO] [stderr] | [INFO] [stderr] 281 | / lazy_static! { [INFO] [stderr] 282 | | static ref LOCK: Mutex = Mutex::new(0); [INFO] [stderr] 283 | | } [INFO] [stderr] | |_________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [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] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/mcs-4b9c840d9eac448a [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test mutex::test::test_into_inner_drop ... ok [INFO] [stdout] test mutex::test::test_into_inner ... ok [INFO] [stdout] test mutex::test::smoke ... ok [INFO] [stdout] test mutex::test::test_get_mut ... ok [INFO] [stdout] test mutex::test::test_lock_unsized ... ok [INFO] [stderr] thread '' panicked at 'explicit panic', src/mutex.rs:384:13 [INFO] [stderr] stack backtrace: [INFO] [stdout] test mutex::test::try_lock ... ok [INFO] [stdout] test mutex::test::test_lock_arc_nested ... ok [INFO] [stdout] test mutex::test::lots_and_lots ... ok [INFO] [stderr] 0: 0x5609f5d10ba4 - backtrace::backtrace::libunwind::trace::hbb4ce8c04526962e [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stderr] 1: 0x5609f5d10ba4 - backtrace::backtrace::trace_unsynchronized::h79251c088e7be038 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x5609f5d10ba4 - std::sys_common::backtrace::_print_fmt::h6b0ea30a9223acae [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x5609f5d10ba4 - ::fmt::h4d51ef07ce58e54b [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x5609f5d3984c - core::fmt::write::he16b9c1345d8565e [INFO] [stderr] at src/libcore/fmt/mod.rs:1069 [INFO] [stderr] 5: 0x5609f5d0d783 - std::io::Write::write_fmt::h35d873b9ce1f02a8 [INFO] [stderr] at src/libstd/io/mod.rs:1504 [INFO] [stderr] 6: 0x5609f5d13475 - std::sys_common::backtrace::_print::h9288fa7d9f6629cb [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x5609f5d13475 - std::sys_common::backtrace::print::h82e606e62781d8af [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x5609f5d13475 - std::panicking::default_hook::{{closure}}::h1fe350ecbf7604e4 [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 9: 0x5609f5d131b2 - std::panicking::default_hook::h1b8b42953fdc841d [INFO] [stderr] at src/libstd/panicking.rs:218 [INFO] [stderr] 10: 0x5609f5d13ad2 - std::panicking::rust_panic_with_hook::he73826f4bb75a21e [INFO] [stderr] at src/libstd/panicking.rs:511 [INFO] [stderr] 11: 0x5609f5d136bb - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:419 [INFO] [stderr] 12: 0x5609f5d38271 - core::panicking::panic_fmt::hc8f9a0b2af5fb585 [INFO] [stderr] at src/libcore/panicking.rs:111 [INFO] [stderr] 13: 0x5609f5d381bd - core::panicking::panic::hc3c435d4bc248f19 [INFO] [stderr] at src/libcore/panicking.rs:54 [INFO] [stderr] 14: 0x5609f5cb8d9a - mcs::mutex::test::test_lock_arc_access_in_unwind::{{closure}}::hd63ebda02dda0bc2 [INFO] [stderr] at src/mutex.rs:384 [INFO] [stderr] 15: 0x5609f5cb45ea - std::sys_common::backtrace::__rust_begin_short_backtrace::h0574fc12000349ae [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libstd/sys_common/backtrace.rs:130 [INFO] [stderr] 16: 0x5609f5cade6a - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h3c54e7d10ec04101 [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libstd/thread/mod.rs:475 [INFO] [stderr] 17: 0x5609f5cbee5e - as core::ops::function::FnOnce<()>>::call_once::h81c31c90f34afda7 [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libstd/panic.rs:318 [INFO] [stderr] 18: 0x5609f5caab6c - std::panicking::try::do_call::h0d78d3191abe7976 [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libstd/panicking.rs:331 [INFO] [stderr] 19: 0x5609f5cab85d - __rust_try [INFO] [stderr] 20: 0x5609f5caa897 - std::panicking::try::h3e458ced20a1b86a [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libstd/panicking.rs:274 [INFO] [stderr] 21: 0x5609f5cbf4be - std::panic::catch_unwind::hdded61bd5544f459 [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libstd/panic.rs:394 [INFO] [stderr] 22: 0x5609f5cad3ae - std::thread::Builder::spawn_unchecked::{{closure}}::h2103a28ff2a63a6e [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libstd/thread/mod.rs:474 [INFO] [stderr] 23: 0x5609f5cbf63e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8fc990331a4d67c6 [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/libcore/ops/function.rs:232 [INFO] [stderr] 24: 0x5609f5d073cf - as core::ops::function::FnOnce>::call_once::h48069b269ca48108 [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/liballoc/boxed.rs:1008 [INFO] [stderr] 25: 0x5609f5d1a2b3 - as core::ops::function::FnOnce>::call_once::heff660b32cd3afd8 [INFO] [stderr] at /rustc/28742a1146f10a4f09369baad027a464acb7a766/src/liballoc/boxed.rs:1008 [INFO] [stderr] 26: 0x5609f5d1a2b3 - std::sys::unix::thread::Thread::new::thread_start::ha538939ed1e2e958 [INFO] [stderr] at src/libstd/sys/unix/thread.rs:87 [INFO] [stderr] 27: 0x7f963f0bd6db - start_thread [INFO] [stderr] 28: 0x7f963ebce88f - __clone [INFO] [stderr] 29: 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" "c65a31d0f0391f727421d7e577669cd064854c3256e0ad5a0a56cec9e1f8eaa6"` [INFO] running `"docker" "rm" "-f" "c65a31d0f0391f727421d7e577669cd064854c3256e0ad5a0a56cec9e1f8eaa6"` [INFO] [stdout] c65a31d0f0391f727421d7e577669cd064854c3256e0ad5a0a56cec9e1f8eaa6