Dec 07 03:46:23.381 INFO testing proptest-0.8.7 against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 07 03:46:23.381 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 07 03:46:23.869 INFO [stdout] 4b108f624dcff3c64404fe54fe49a3d9db618cd9d2a93517e6d08dbc333c556e
Dec 07 03:46:23.871 INFO running `"docker" "start" "-a" "4b108f624dcff3c64404fe54fe49a3d9db618cd9d2a93517e6d08dbc333c556e"`
Dec 07 03:46:25.372 INFO [stderr] usermod: no changes
Dec 07 03:46:25.469 INFO [stderr]    Compiling rand v0.5.5
Dec 07 03:46:29.740 INFO [stderr]    Compiling proptest v0.8.7 (/source)
Dec 07 03:46:39.013 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 07 03:46:39.013 INFO [stderr]    --> src/test_runner/failure_persistence/file.rs:308:5
Dec 07 03:46:39.013 INFO [stderr]     |
Dec 07 03:46:39.013 INFO [stderr] 308 |     write!(buf, "{}", format_basic_seed_line(seed));
Dec 07 03:46:39.013 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 03:46:39.013 INFO [stderr]     |
Dec 07 03:46:39.013 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 07 03:46:39.013 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 03:46:39.013 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 07 03:46:39.013 INFO [stderr] 
Dec 07 03:46:47.545 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.15s
Dec 07 03:46:47.551 INFO [stderr] su: No module specific data is present
Dec 07 03:46:48.336 INFO running `"docker" "inspect" "4b108f624dcff3c64404fe54fe49a3d9db618cd9d2a93517e6d08dbc333c556e"`
Dec 07 03:46:48.674 INFO running `"docker" "rm" "-f" "4b108f624dcff3c64404fe54fe49a3d9db618cd9d2a93517e6d08dbc333c556e"`
Dec 07 03:46:49.110 INFO [stdout] 4b108f624dcff3c64404fe54fe49a3d9db618cd9d2a93517e6d08dbc333c556e
Dec 07 03:46:49.114 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 07 03:46:49.704 INFO [stdout] 35d5242dbf100c1af6353324e2d73c3e056bb9d6b137dda1302e34459b410bf3
Dec 07 03:46:49.704 INFO running `"docker" "start" "-a" "35d5242dbf100c1af6353324e2d73c3e056bb9d6b137dda1302e34459b410bf3"`
Dec 07 03:46:50.764 INFO [stderr] usermod: no changes
Dec 07 03:46:50.968 INFO [stderr]    Compiling proptest v0.8.7 (/source)
Dec 07 03:47:21.649 INFO [stderr] warning: unused `core::result::Result` that must be used
Dec 07 03:47:21.649 INFO [stderr]    --> src/test_runner/failure_persistence/file.rs:308:5
Dec 07 03:47:21.649 INFO [stderr]     |
Dec 07 03:47:21.649 INFO [stderr] 308 |     write!(buf, "{}", format_basic_seed_line(seed));
Dec 07 03:47:21.649 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 03:47:21.649 INFO [stderr]     |
Dec 07 03:47:21.649 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 07 03:47:21.649 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 03:47:21.649 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 07 03:47:21.649 INFO [stderr] 
Dec 07 03:47:59.111 INFO [stderr] error: Could not compile `proptest`.
Dec 07 03:47:59.111 INFO [stderr] 
Dec 07 03:47:59.111 INFO [stderr] Caused by:
Dec 07 03:47:59.111 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=62594689ac4001ee -C extra-filename=-62594689ac4001ee --out-dir /target/debug/deps -L dependency=/target/debug/deps --extern bit_set=/target/debug/deps/libbit_set-b348bcd28e04fccf.rlib --extern bitflags=/target/debug/deps/libbitflags-69d0a04c3da2acff.rlib --extern byteorder=/target/debug/deps/libbyteorder-682159cd49dca1f9.rlib --extern lazy_static=/target/debug/deps/liblazy_static-31b1ea09d67d1701.rlib --extern num_traits=/target/debug/deps/libnum_traits-f69666671c81ecba.rlib --extern quick_error=/target/debug/deps/libquick_error-48fecbb8e767def6.rlib --extern rand=/target/debug/deps/librand-23c408c43cceb344.rlib --extern regex=/target/debug/deps/libregex-91a85099c5026c1b.rlib --extern regex_syntax=/target/debug/deps/libregex_syntax-05c82a1fe23a7ed9.rlib --extern rusty_fork=/target/debug/deps/librusty_fork-1ab603e196c629cb.rlib --extern tempfile=/target/debug/deps/libtempfile-42989f24649ba92e.rlib --cap-lints=forbid` (signal: 9, SIGKILL: kill)
Dec 07 03:47:59.115 INFO [stderr] su: No module specific data is present
Dec 07 03:47:59.762 INFO running `"docker" "inspect" "35d5242dbf100c1af6353324e2d73c3e056bb9d6b137dda1302e34459b410bf3"`
Dec 07 03:48:00.100 INFO running `"docker" "rm" "-f" "35d5242dbf100c1af6353324e2d73c3e056bb9d6b137dda1302e34459b410bf3"`
Dec 07 03:48:00.348 INFO [stdout] 35d5242dbf100c1af6353324e2d73c3e056bb9d6b137dda1302e34459b410bf3