Dec 02 23:55:08.909 INFO testing oncemutex-0.1.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 23:55:08.909 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 23:55:09.137 INFO [stdout] d58b155c4ae8f3f8faf84c2a9b3f153a196e19d110dc1c8cab39367354899dbe
Dec 02 23:55:09.137 INFO running `"docker" "start" "-a" "d58b155c4ae8f3f8faf84c2a9b3f153a196e19d110dc1c8cab39367354899dbe"`
Dec 02 23:55:09.759 INFO [stderr] usermod: no changes
Dec 02 23:55:09.802 INFO [stderr]    Compiling oncemutex v0.1.1 (/source)
Dec 02 23:55:10.375 INFO [stderr] warning: unnecessary `unsafe` block
Dec 02 23:55:10.375 INFO [stderr]   --> src/lib.rs:86:9
Dec 02 23:55:10.375 INFO [stderr]    |
Dec 02 23:55:10.375 INFO [stderr] 86 |         unsafe { self.data.into_inner() }
Dec 02 23:55:10.375 INFO [stderr]    |         ^^^^^^ unnecessary `unsafe` block
Dec 02 23:55:10.375 INFO [stderr]    |
Dec 02 23:55:10.375 INFO [stderr] note: lint level defined here
Dec 02 23:55:10.375 INFO [stderr]   --> src/lib.rs:1:23
Dec 02 23:55:10.375 INFO [stderr]    |
Dec 02 23:55:10.375 INFO [stderr] 1  | #![deny(missing_docs, warnings)]
Dec 02 23:55:10.375 INFO [stderr]    |                       ^^^^^^^^
Dec 02 23:55:10.375 INFO [stderr]    = note: #[warn(unused_unsafe)] implied by #[warn(warnings)]
Dec 02 23:55:10.375 INFO [stderr] 
Dec 02 23:55:10.423 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Dec 02 23:55:10.423 INFO [stderr] su: No module specific data is present
Dec 02 23:55:10.968 INFO running `"docker" "inspect" "d58b155c4ae8f3f8faf84c2a9b3f153a196e19d110dc1c8cab39367354899dbe"`
Dec 02 23:55:11.277 INFO running `"docker" "rm" "-f" "d58b155c4ae8f3f8faf84c2a9b3f153a196e19d110dc1c8cab39367354899dbe"`
Dec 02 23:55:11.363 INFO [stdout] d58b155c4ae8f3f8faf84c2a9b3f153a196e19d110dc1c8cab39367354899dbe
Dec 02 23:55:11.364 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 23:55:11.632 INFO [stdout] 5db1a2a387d7a70588a55c3ae97b18f8d80e448060139741321c0482990e79a3
Dec 02 23:55:11.634 INFO running `"docker" "start" "-a" "5db1a2a387d7a70588a55c3ae97b18f8d80e448060139741321c0482990e79a3"`
Dec 02 23:55:12.284 INFO [stderr] usermod: no changes
Dec 02 23:55:12.333 INFO [stderr]    Compiling oncemutex v0.1.1 (/source)
Dec 02 23:55:12.973 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 23:55:12.973 INFO [stderr]  --> src/lib.rs:2:19
Dec 02 23:55:12.973 INFO [stderr]   |
Dec 02 23:55:12.973 INFO [stderr] 2 | #![cfg_attr(test, feature(test))]
Dec 02 23:55:12.973 INFO [stderr]   |                   ^^^^^^^^^^^^^
Dec 02 23:55:12.973 INFO [stderr] 
Dec 02 23:55:12.974 INFO [stderr] error: aborting due to previous error
Dec 02 23:55:12.974 INFO [stderr] 
Dec 02 23:55:12.974 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 23:55:12.980 INFO [stderr] error: Could not compile `oncemutex`.
Dec 02 23:55:12.980 INFO [stderr] 
Dec 02 23:55:12.980 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 23:55:12.982 INFO [stderr] su: No module specific data is present
Dec 02 23:55:13.315 INFO running `"docker" "inspect" "5db1a2a387d7a70588a55c3ae97b18f8d80e448060139741321c0482990e79a3"`
Dec 02 23:55:13.445 INFO running `"docker" "rm" "-f" "5db1a2a387d7a70588a55c3ae97b18f8d80e448060139741321c0482990e79a3"`
Dec 02 23:55:13.544 INFO [stdout] 5db1a2a387d7a70588a55c3ae97b18f8d80e448060139741321c0482990e79a3