Dec 15 00:55:15.797 INFO testing proptest-0.8.7 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 15 00:55:15.798 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 15 00:55:16.307 INFO [stdout] 651504eeb00c7ed67c7ae8ae6fd28a8033f2545a711c739ecc36778896158a00
Dec 15 00:55:16.309 INFO running `"docker" "start" "-a" "651504eeb00c7ed67c7ae8ae6fd28a8033f2545a711c739ecc36778896158a00"`
Dec 15 00:55:18.110 INFO [stderr] usermod: no changes
Dec 15 00:55:18.257 INFO [stderr]    Compiling wait-timeout v0.1.5
Dec 15 00:55:18.257 INFO [stderr]    Compiling rand v0.5.5
Dec 15 00:55:20.263 INFO [stderr]    Compiling rusty-fork v0.2.1
Dec 15 00:55:25.634 INFO [stderr]    Compiling proptest v0.8.7 (/source)
Dec 15 00:55:34.746 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 15 00:55:34.746 INFO [stderr]    --> src/test_runner/failure_persistence/file.rs:308:5
Dec 15 00:55:34.746 INFO [stderr]     |
Dec 15 00:55:34.746 INFO [stderr] 308 |     write!(buf, "{}", format_basic_seed_line(seed));
Dec 15 00:55:34.746 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 15 00:55:34.746 INFO [stderr]     |
Dec 15 00:55:34.746 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 15 00:55:34.747 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 15 00:55:34.747 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 15 00:55:34.747 INFO [stderr] 
Dec 15 00:55:42.459 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.30s
Dec 15 00:55:42.467 INFO [stderr] su: No module specific data is present
Dec 15 00:55:43.413 INFO running `"docker" "inspect" "651504eeb00c7ed67c7ae8ae6fd28a8033f2545a711c739ecc36778896158a00"`
Dec 15 00:55:43.750 INFO running `"docker" "rm" "-f" "651504eeb00c7ed67c7ae8ae6fd28a8033f2545a711c739ecc36778896158a00"`
Dec 15 00:55:44.047 INFO [stdout] 651504eeb00c7ed67c7ae8ae6fd28a8033f2545a711c739ecc36778896158a00
Dec 15 00:55:44.053 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 15 00:55:44.537 INFO [stdout] 7ffe7bc5109e748a735f150f3ade42e4635e4da0670568f5f9abee2d8b810d35
Dec 15 00:55:44.540 INFO running `"docker" "start" "-a" "7ffe7bc5109e748a735f150f3ade42e4635e4da0670568f5f9abee2d8b810d35"`
Dec 15 00:55:46.562 INFO [stderr] usermod: no changes
Dec 15 00:55:46.671 INFO [stderr]    Compiling proptest v0.8.7 (/source)
Dec 15 00:56:17.483 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 15 00:56:17.483 INFO [stderr]    --> src/test_runner/failure_persistence/file.rs:308:5
Dec 15 00:56:17.483 INFO [stderr]     |
Dec 15 00:56:17.483 INFO [stderr] 308 |     write!(buf, "{}", format_basic_seed_line(seed));
Dec 15 00:56:17.483 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 15 00:56:17.483 INFO [stderr]     |
Dec 15 00:56:17.483 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 15 00:56:17.483 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 15 00:56:17.483 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 15 00:56:17.483 INFO [stderr] 
Dec 15 00:56:54.525 INFO [stderr] error: Could not compile `proptest`.
Dec 15 00:56:54.525 INFO [stderr] 
Dec 15 00:56:54.525 INFO [stderr] Caused by:
Dec 15 00:56:54.525 INFO [stderr]   process didn't exit successfully: `rustc --crate-name proptest src/lib.rs --color never --emit=dep-info,link -C debuginfo=2 --test --cfg 'feature="bit-set"' --cfg 'feature="byteorder"' --cfg 'feature="default"' --cfg 'feature="fork"' --cfg 'feature="num-traits"' --cfg 'feature="quick-error"' --cfg 'feature="rand"' --cfg 'feature="regex-syntax"' --cfg 'feature="rusty-fork"' --cfg 'feature="std"' --cfg 'feature="tempfile"' --cfg 'feature="timeout"' -C metadata=fef74a3e3bed17b1 -C extra-filename=-fef74a3e3bed17b1 --out-dir /target/debug/deps -L dependency=/target/debug/deps --extern bit_set=/target/debug/deps/libbit_set-b27f891d53a13806.rlib --extern bitflags=/target/debug/deps/libbitflags-76f8cac62d4979aa.rlib --extern byteorder=/target/debug/deps/libbyteorder-0b4924c4dc04cafc.rlib --extern lazy_static=/target/debug/deps/liblazy_static-07be44a957344fa4.rlib --extern num_traits=/target/debug/deps/libnum_traits-c90c2fb0721b8193.rlib --extern quick_error=/target/debug/deps/libquick_error-b6654df2085a0cff.rlib --extern rand=/target/debug/deps/librand-4120e42db7734eda.rlib --extern regex=/target/debug/deps/libregex-b284bfe4208d8683.rlib --extern regex_syntax=/target/debug/deps/libregex_syntax-3c2499fbc6a64b3e.rlib --extern rusty_fork=/target/debug/deps/librusty_fork-08697f6d7f7d3fec.rlib --extern tempfile=/target/debug/deps/libtempfile-11d0bc9962c655a5.rlib --cap-lints=forbid` (signal: 9, SIGKILL: kill)
Dec 15 00:56:54.526 INFO [stderr] su: No module specific data is present
Dec 15 00:56:54.761 INFO running `"docker" "inspect" "7ffe7bc5109e748a735f150f3ade42e4635e4da0670568f5f9abee2d8b810d35"`
Dec 15 00:56:54.834 INFO running `"docker" "rm" "-f" "7ffe7bc5109e748a735f150f3ade42e4635e4da0670568f5f9abee2d8b810d35"`
Dec 15 00:56:54.917 INFO [stdout] 7ffe7bc5109e748a735f150f3ade42e4635e4da0670568f5f9abee2d8b810d35