Dec 02 23:55:12.440 INFO testing oncemutex-0.1.1 against 1.30.1 for beta-1.31-5
Dec 02 23:55:12.440 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/1.30.1:/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 +1.30.1 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 23:55:12.622 INFO [stdout] d012c79e641ef39e0a922edf540df6eb0547a0f87846c8bb722f6bad7d23a762
Dec 02 23:55:12.624 INFO running `"docker" "start" "-a" "d012c79e641ef39e0a922edf540df6eb0547a0f87846c8bb722f6bad7d23a762"`
Dec 02 23:55:13.111 INFO [stderr] usermod: no changes
Dec 02 23:55:13.139 INFO [stderr]    Compiling oncemutex v0.1.1 (/source)
Dec 02 23:55:13.788 INFO [stderr] warning: unnecessary `unsafe` block
Dec 02 23:55:13.788 INFO [stderr]   --> src/lib.rs:86:9
Dec 02 23:55:13.788 INFO [stderr]    |
Dec 02 23:55:13.788 INFO [stderr] 86 |         unsafe { self.data.into_inner() }
Dec 02 23:55:13.788 INFO [stderr]    |         ^^^^^^ unnecessary `unsafe` block
Dec 02 23:55:13.788 INFO [stderr]    |
Dec 02 23:55:13.789 INFO [stderr] note: lint level defined here
Dec 02 23:55:13.789 INFO [stderr]   --> src/lib.rs:1:23
Dec 02 23:55:13.789 INFO [stderr]    |
Dec 02 23:55:13.789 INFO [stderr] 1  | #![deny(missing_docs, warnings)]
Dec 02 23:55:13.789 INFO [stderr]    |                       ^^^^^^^^
Dec 02 23:55:13.789 INFO [stderr]    = note: #[warn(unused_unsafe)] implied by #[warn(warnings)]
Dec 02 23:55:13.789 INFO [stderr] 
Dec 02 23:55:13.814 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
Dec 02 23:55:13.816 INFO [stderr] su: No module specific data is present
Dec 02 23:55:14.219 INFO running `"docker" "inspect" "d012c79e641ef39e0a922edf540df6eb0547a0f87846c8bb722f6bad7d23a762"`
Dec 02 23:55:14.340 INFO running `"docker" "rm" "-f" "d012c79e641ef39e0a922edf540df6eb0547a0f87846c8bb722f6bad7d23a762"`
Dec 02 23:55:14.549 INFO [stdout] d012c79e641ef39e0a922edf540df6eb0547a0f87846c8bb722f6bad7d23a762
Dec 02 23:55:14.551 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/1.30.1:/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 +1.30.1 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 23:55:14.775 INFO [stdout] 973223469c50afeb32fa206fc6d44c7bf8bd3244d64c9b254e9452e9572eca42
Dec 02 23:55:14.775 INFO running `"docker" "start" "-a" "973223469c50afeb32fa206fc6d44c7bf8bd3244d64c9b254e9452e9572eca42"`
Dec 02 23:55:15.416 INFO [stderr] usermod: no changes
Dec 02 23:55:15.445 INFO [stderr]    Compiling oncemutex v0.1.1 (/source)
Dec 02 23:55:16.080 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 23:55:16.080 INFO [stderr]  --> src/lib.rs:2:19
Dec 02 23:55:16.080 INFO [stderr]   |
Dec 02 23:55:16.080 INFO [stderr] 2 | #![cfg_attr(test, feature(test))]
Dec 02 23:55:16.080 INFO [stderr]   |                   ^^^^^^^^^^^^^^
Dec 02 23:55:16.080 INFO [stderr] 
Dec 02 23:55:16.080 INFO [stderr] error: aborting due to previous error
Dec 02 23:55:16.080 INFO [stderr] 
Dec 02 23:55:16.080 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 23:55:16.084 INFO [stderr] error: Could not compile `oncemutex`.
Dec 02 23:55:16.084 INFO [stderr] 
Dec 02 23:55:16.084 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 23:55:16.085 INFO [stderr] su: No module specific data is present
Dec 02 23:55:16.406 INFO running `"docker" "inspect" "973223469c50afeb32fa206fc6d44c7bf8bd3244d64c9b254e9452e9572eca42"`
Dec 02 23:55:16.556 INFO running `"docker" "rm" "-f" "973223469c50afeb32fa206fc6d44c7bf8bd3244d64c9b254e9452e9572eca42"`
Dec 02 23:55:16.838 INFO [stdout] 973223469c50afeb32fa206fc6d44c7bf8bd3244d64c9b254e9452e9572eca42