[INFO] crate simsearch 0.1.4 is already in cache [INFO] extracting crate simsearch 0.1.4 into work/ex/beta-1.37-6/sources/1.36.0/reg/simsearch/0.1.4 [INFO] extracting crate simsearch 0.1.4 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simsearch/0.1.4 [INFO] validating manifest of simsearch-0.1.4 on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of simsearch-0.1.4 on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing simsearch-0.1.4 [INFO] finished frobbing simsearch-0.1.4 [INFO] frobbed toml for simsearch-0.1.4 written to work/ex/beta-1.37-6/sources/1.36.0/reg/simsearch/0.1.4/Cargo.toml [INFO] started frobbing simsearch-0.1.4 [INFO] finished frobbing simsearch-0.1.4 [INFO] frobbed toml for simsearch-0.1.4 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simsearch/0.1.4/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing simsearch-0.1.4 against 1.36.0 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/simsearch/0.1.4:/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=warn" "-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" "+1.36.0" "build" "--frozen"` [INFO] [stdout] d7f11c4b3f3188476d3328b2b41ce5f8891eeb8573a7c45279972d78577a05bc [INFO] running `"docker" "start" "-a" "d7f11c4b3f3188476d3328b2b41ce5f8891eeb8573a7c45279972d78577a05bc"` [INFO] [stderr] Compiling simsearch v0.1.4 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.44s [INFO] running `"docker" "inspect" "d7f11c4b3f3188476d3328b2b41ce5f8891eeb8573a7c45279972d78577a05bc"` [INFO] running `"docker" "rm" "-f" "d7f11c4b3f3188476d3328b2b41ce5f8891eeb8573a7c45279972d78577a05bc"` [INFO] [stdout] d7f11c4b3f3188476d3328b2b41ce5f8891eeb8573a7c45279972d78577a05bc [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/simsearch/0.1.4:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 60d58c49a390626228829c44bebf26efb2f668bea7067caf9660761780d09582 [INFO] running `"docker" "start" "-a" "60d58c49a390626228829c44bebf26efb2f668bea7067caf9660761780d09582"` [INFO] [stderr] Compiling quickcheck_macros v0.8.0 [INFO] [stderr] Compiling env_logger v0.6.2 [INFO] [stderr] Compiling criterion v0.2.11 [INFO] [stderr] Compiling quickcheck v0.8.5 [INFO] [stderr] Compiling simsearch v0.1.4 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 19.55s [INFO] running `"docker" "inspect" "60d58c49a390626228829c44bebf26efb2f668bea7067caf9660761780d09582"` [INFO] running `"docker" "rm" "-f" "60d58c49a390626228829c44bebf26efb2f668bea7067caf9660761780d09582"` [INFO] [stdout] 60d58c49a390626228829c44bebf26efb2f668bea7067caf9660761780d09582 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/simsearch/0.1.4:/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=warn" "-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" "+1.36.0" "test" "--frozen"` [INFO] [stdout] 652d365bfed4278cb3da2caee9af74535ebe336d74ecf9e58d0924abd3d31d5a [INFO] running `"docker" "start" "-a" "652d365bfed4278cb3da2caee9af74535ebe336d74ecf9e58d0924abd3d31d5a"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.11s [INFO] [stderr] Running /opt/crater/target/debug/deps/simsearch-9056e89adcda9e39 [INFO] [stderr] Running /opt/crater/target/debug/deps/lib-8f16f1934425769f [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test test_quickcheck ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- test_quickcheck stdout ---- [INFO] [stdout] thread 'test_quickcheck' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/libcore/result.rs:999:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55abef6d12c3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6485381528590a55 [INFO] [stdout] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stdout] 1: 0x55abef6ccbab - std::sys_common::backtrace::_print::h49a82ae9552e35c7 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:71 [INFO] [stdout] 2: 0x55abef6cffb6 - std::panicking::default_hook::{{closure}}::he20974adbefcc046 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] at src/libstd/panicking.rs:197 [INFO] [stdout] 3: 0x55abef6cfcde - std::panicking::default_hook::he4af6af4ac7fef7b [INFO] [stdout] at src/libstd/panicking.rs:208 [INFO] [stdout] 4: 0x55abef6d06bf - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f [INFO] [stdout] at src/libstd/panicking.rs:474 [INFO] [stdout] 5: 0x55abef6d0241 - std::panicking::continue_panic_fmt::ha6d6ae144369025b [INFO] [stdout] at src/libstd/panicking.rs:381 [INFO] [stdout] 6: 0x55abef6d0125 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:308 [INFO] [stdout] 7: 0x55abef6e2f0c - core::panicking::panic_fmt::hc4f83bfed80aeabd [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 8: 0x55abef6bacc7 - core::result::unwrap_failed::he815a7093e293823 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/macros.rs:18 [INFO] [stdout] 9: 0x55abef40389a - core::result::Result::unwrap::h111830edd58328e9 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/result.rs:800 [INFO] [stdout] 10: 0x55abef4068c7 - lib::populate_engine::h28cead93923d3df7 [INFO] [stdout] at tests/lib.rs:19 [INFO] [stdout] 11: 0x55abef42be4f - core::ops::function::FnOnce::call_once::hc0e17a738377aa2c [INFO] [stdout] at tests/lib.rs:13 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 12: 0x55abef41f9e8 - lazy_static::lazy::Lazy::get::{{closure}}::h64f5f1d7dcc02d82 [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.3.0/src/inline_lazy.rs:28 [INFO] [stdout] 13: 0x55abef41fc9a - std::sync::once::Once::call_once::{{closure}}::h7b147517c33fee15 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sync/once.rs:220 [INFO] [stdout] 14: 0x55abef6cbe15 - std::sync::once::Once::call_inner::h179d1a2b131ce906 [INFO] [stdout] at src/libstd/sync/once.rs:387 [INFO] [stdout] 15: 0x55abef41fc2c - std::sync::once::Once::call_once::h6c7c5dad57fee6b6 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sync/once.rs:220 [INFO] [stdout] 16: 0x55abef406c64 - ::deref::hd1210c9d8773ce6e [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.3.0/src/inline_lazy.rs:27 [INFO] [stdout] at /opt/crater/workdir/<::lazy_static::__lazy_static_internal macros>:12 [INFO] [stdout] at /opt/crater/workdir/<::lazy_static::__lazy_static_internal macros>:13 [INFO] [stdout] 17: 0x55abef406d27 - lib::test_quickcheck::test_quickcheck::h8425bc2c0967cab3 [INFO] [stdout] at tests/lib.rs:35 [INFO] [stdout] 18: 0x55abef409765 - T as quickcheck::tester::Testable>::result::{{closure}}::h7a12e8767568565d [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:366 [INFO] [stdout] 19: 0x55abef40eab0 - as core::ops::function::FnOnce<()>>::call_once::hc837d8175631a352 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:315 [INFO] [stdout] 20: 0x55abef429ef9 - std::panicking::try::do_call::h16d223bac76c96d9 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:293 [INFO] [stdout] 21: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 22: 0x55abef429d3e - std::panicking::try::hfcf84292a88e5bd7 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] 23: 0x55abef40eb90 - std::panic::catch_unwind::hd52f22e019f29235 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] 24: 0x55abef407818 - quickcheck::tester::safe::haf99da3a7c067e5d [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:393 [INFO] [stdout] 25: 0x55abef409399 - T as quickcheck::tester::Testable>::result::h0f89ddea0c30bbc1 [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:366 [INFO] [stdout] 26: 0x55abef4075a3 - quickcheck::tester::QuickCheck::quicktest::h8738152a083fdea2 [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:135 [INFO] [stdout] 27: 0x55abef4070ca - quickcheck::tester::QuickCheck::quickcheck::h33b946bb3811cb3b [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:174 [INFO] [stdout] 28: 0x55abef40703f - quickcheck::tester::quickcheck::h8d04eef782ec950f [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:193 [INFO] [stdout] 29: 0x55abef406d0c - lib::test_quickcheck::hd1ef63e2b7dd8624 [INFO] [stdout] at tests/lib.rs:33 [INFO] [stdout] 30: 0x55abef406ce9 - lib::test_quickcheck::{{closure}}::hcef1b46c6f35dcce [INFO] [stdout] at tests/lib.rs:33 [INFO] [stdout] 31: 0x55abef42bd7d - core::ops::function::FnOnce::call_once::h3eee1d4bddcb2a40 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 32: 0x55abef6675ae - as core::ops::function::FnOnce>::call_once::h6b004fa8f4fc1608 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 33: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 34: 0x55abef681ea7 - test::run_test::run_test_inner::{{closure}}::h9a4d23c41d058d37 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at src/libtest/lib.rs:1468 [INFO] [stdout] 35: 0x55abef65c8c4 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3765d76361a33ff7 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sys_common/backtrace.rs:136 [INFO] [stdout] 36: 0x55abef660974 - std::panicking::try::do_call::h6f86e980b52f74d5 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:470 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:315 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:293 [INFO] [stdout] 37: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 38: 0x55abef660f81 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h760b8a2b155f54c3 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:469 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 39: 0x55abef6c471e - as core::ops::function::FnOnce>::call_once::h805c3cc89d534c05 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 40: 0x55abef6d2b5f - std::sys::unix::thread::Thread::new::thread_start::h6f10b78f26c98dc6 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 41: 0x7f4ffeb1a4a3 - start_thread [INFO] [stdout] 42: 0x7f4ffe645d0e - __clone [INFO] [stdout] 43: 0x0 - [INFO] [stdout] thread 'test_quickcheck' panicked at 'Once instance has previously been poisoned', src/libstd/sync/once.rs:362:21 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55abef6d12c3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6485381528590a55 [INFO] [stdout] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stdout] 1: 0x55abef6ccbab - std::sys_common::backtrace::_print::h49a82ae9552e35c7 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:71 [INFO] [stdout] 2: 0x55abef6cffb6 - std::panicking::default_hook::{{closure}}::he20974adbefcc046 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] at src/libstd/panicking.rs:197 [INFO] [stdout] 3: 0x55abef6cfcde - std::panicking::default_hook::he4af6af4ac7fef7b [INFO] [stdout] at src/libstd/panicking.rs:208 [INFO] [stdout] 4: 0x55abef6d06bf - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f [INFO] [stdout] at src/libstd/panicking.rs:474 [INFO] [stdout] 5: 0x55abef6d0484 - std::panicking::begin_panic::h69ca2154dadf09c7 [INFO] [stdout] at src/libstd/panicking.rs:408 [INFO] [stdout] 6: 0x55abef6cbe7a - std::sync::once::Once::call_inner::h179d1a2b131ce906 [INFO] [stdout] at src/libstd/sync/once.rs:362 [INFO] [stdout] 7: 0x55abef41fc2c - std::sync::once::Once::call_once::h6c7c5dad57fee6b6 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sync/once.rs:220 [INFO] [stdout] 8: 0x55abef406c64 - ::deref::hd1210c9d8773ce6e [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.3.0/src/inline_lazy.rs:27 [INFO] [stdout] at /opt/crater/workdir/<::lazy_static::__lazy_static_internal macros>:12 [INFO] [stdout] at /opt/crater/workdir/<::lazy_static::__lazy_static_internal macros>:13 [INFO] [stdout] 9: 0x55abef406d27 - lib::test_quickcheck::test_quickcheck::h8425bc2c0967cab3 [INFO] [stdout] at tests/lib.rs:35 [INFO] [stdout] 10: 0x55abef4092a5 - T as quickcheck::tester::Testable>::result::shrink_failure::{{closure}}::hdbb652ec18032f1d [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:344 [INFO] [stdout] 11: 0x55abef40ea70 - as core::ops::function::FnOnce<()>>::call_once::hc6c434567f1f3e0c [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:315 [INFO] [stdout] 12: 0x55abef429f79 - std::panicking::try::do_call::hbc7088895115397c [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:293 [INFO] [stdout] 13: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 14: 0x55abef429b5e - std::panicking::try::hb92b2bf3c38a1cd9 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] 15: 0x55abef40eb40 - std::panic::catch_unwind::h036fd38392b29d36 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] 16: 0x55abef407788 - quickcheck::tester::safe::h2a6b7cab79cbccf5 [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:393 [INFO] [stdout] 17: 0x55abef408d8b - T as quickcheck::tester::Testable>::result::shrink_failure::heac2b613556c9b70 [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:344 [INFO] [stdout] 18: 0x55abef4094d3 - T as quickcheck::tester::Testable>::result::h0f89ddea0c30bbc1 [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:375 [INFO] [stdout] 19: 0x55abef4075a3 - quickcheck::tester::QuickCheck::quicktest::h8738152a083fdea2 [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:135 [INFO] [stdout] 20: 0x55abef4070ca - quickcheck::tester::QuickCheck::quickcheck::h33b946bb3811cb3b [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:174 [INFO] [stdout] 21: 0x55abef40703f - quickcheck::tester::quickcheck::h8d04eef782ec950f [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:193 [INFO] [stdout] 22: 0x55abef406d0c - lib::test_quickcheck::hd1ef63e2b7dd8624 [INFO] [stdout] at tests/lib.rs:33 [INFO] [stdout] 23: 0x55abef406ce9 - lib::test_quickcheck::{{closure}}::hcef1b46c6f35dcce [INFO] [stdout] at tests/lib.rs:33 [INFO] [stdout] 24: 0x55abef42bd7d - core::ops::function::FnOnce::call_once::h3eee1d4bddcb2a40 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 25: 0x55abef6675ae - as core::ops::function::FnOnce>::call_once::h6b004fa8f4fc1608 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 26: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 27: 0x55abef681ea7 - test::run_test::run_test_inner::{{closure}}::h9a4d23c41d058d37 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at src/libtest/lib.rs:1468 [INFO] [stdout] 28: 0x55abef65c8c4 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3765d76361a33ff7 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sys_common/backtrace.rs:136 [INFO] [stdout] 29: 0x55abef660974 - std::panicking::try::do_call::h6f86e980b52f74d5 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:470 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:315 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:293 [INFO] [stdout] 30: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 31: 0x55abef660f81 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h760b8a2b155f54c3 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:469 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 32: 0x55abef6c471e - as core::ops::function::FnOnce>::call_once::h805c3cc89d534c05 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 33: 0x55abef6d2b5f - std::sys::unix::thread::Thread::new::thread_start::h6f10b78f26c98dc6 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 34: 0x7f4ffeb1a4a3 - start_thread [INFO] [stdout] 35: 0x7f4ffe645d0e - __clone [INFO] [stdout] 36: 0x0 - [INFO] [stdout] thread 'test_quickcheck' panicked at '[quickcheck] TEST FAILED (runtime error). Arguments: ([]) [INFO] [stdout] Error: "Once instance has previously been poisoned"', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:176:28 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55abef6d12c3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6485381528590a55 [INFO] [stdout] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stdout] 1: 0x55abef6ccbab - std::sys_common::backtrace::_print::h49a82ae9552e35c7 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:71 [INFO] [stdout] 2: 0x55abef6cffb6 - std::panicking::default_hook::{{closure}}::he20974adbefcc046 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] at src/libstd/panicking.rs:197 [INFO] [stdout] 3: 0x55abef6cfcde - std::panicking::default_hook::he4af6af4ac7fef7b [INFO] [stdout] at src/libstd/panicking.rs:208 [INFO] [stdout] 4: 0x55abef6d06bf - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f [INFO] [stdout] at src/libstd/panicking.rs:474 [INFO] [stdout] 5: 0x55abef429a22 - std::panicking::begin_panic::hedabcd8dc003dab2 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:408 [INFO] [stdout] 6: 0x55abef40719d - quickcheck::tester::QuickCheck::quickcheck::h33b946bb3811cb3b [INFO] [stdout] at /opt/crater/workdir/<::std::macros::panic macros>:4 [INFO] [stdout] 7: 0x55abef40703f - quickcheck::tester::quickcheck::h8d04eef782ec950f [INFO] [stdout] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.8.5/src/tester.rs:193 [INFO] [stdout] 8: 0x55abef406d0c - lib::test_quickcheck::hd1ef63e2b7dd8624 [INFO] [stdout] at tests/lib.rs:33 [INFO] [stdout] 9: 0x55abef406ce9 - lib::test_quickcheck::{{closure}}::hcef1b46c6f35dcce [INFO] [stdout] at tests/lib.rs:33 [INFO] [stdout] 10: 0x55abef42bd7d - core::ops::function::FnOnce::call_once::h3eee1d4bddcb2a40 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 11: 0x55abef6675ae - as core::ops::function::FnOnce>::call_once::h6b004fa8f4fc1608 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 12: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 13: 0x55abef681ea7 - test::run_test::run_test_inner::{{closure}}::h9a4d23c41d058d37 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at src/libtest/lib.rs:1468 [INFO] [stdout] 14: 0x55abef65c8c4 - std::sys_common::backtrace::__rust_begin_short_backtrace::h3765d76361a33ff7 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/sys_common/backtrace.rs:136 [INFO] [stdout] 15: 0x55abef660974 - std::panicking::try::do_call::h6f86e980b52f74d5 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:470 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:315 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:293 [INFO] [stdout] 16: 0x55abef6d3799 - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:85 [INFO] [stdout] 17: 0x55abef660f81 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h760b8a2b155f54c3 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panicking.rs:272 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/panic.rs:394 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/thread/mod.rs:469 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/ops/function.rs:231 [INFO] [stdout] 18: 0x55abef6c471e - as core::ops::function::FnOnce>::call_once::h805c3cc89d534c05 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] 19: 0x55abef6d2b5f - std::sys::unix::thread::Thread::new::thread_start::h6f10b78f26c98dc6 [INFO] [stdout] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/liballoc/boxed.rs:704 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 20: 0x7f4ffeb1a4a3 - start_thread [INFO] [stdout] 21: 0x7f4ffe645d0e - __clone [INFO] [stdout] 22: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] test_quickcheck [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 '--test lib' [INFO] running `"docker" "inspect" "652d365bfed4278cb3da2caee9af74535ebe336d74ecf9e58d0924abd3d31d5a"` [INFO] running `"docker" "rm" "-f" "652d365bfed4278cb3da2caee9af74535ebe336d74ecf9e58d0924abd3d31d5a"` [INFO] [stdout] 652d365bfed4278cb3da2caee9af74535ebe336d74ecf9e58d0924abd3d31d5a