Dec 19 12:38:30.053 INFO checking milesand/calculator-the-solver against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:38:30.053 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/milesand/calculator-the-solver:/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=forbid" "-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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:38:30.548 INFO [stdout] b266873269c9f6b67c40d6fe7494e8cbb0a69d404163eb1b9d4b215392cafb5e
Dec 19 12:38:30.550 INFO running `"docker" "start" "-a" "b266873269c9f6b67c40d6fe7494e8cbb0a69d404163eb1b9d4b215392cafb5e"`
Dec 19 12:38:32.067 INFO [stderr]     Checking rand v0.4.2
Dec 19 12:38:32.067 INFO [stderr]     Checking num-complex v0.1.41
Dec 19 12:38:34.053 INFO [stderr]     Checking rand v0.3.22
Dec 19 12:38:34.280 INFO [stderr]     Checking num-bigint v0.1.41
Dec 19 12:38:35.940 INFO [stderr]     Checking num-rational v0.1.41
Dec 19 12:38:36.540 INFO [stderr]     Checking num v0.1.41
Dec 19 12:38:36.820 INFO [stderr]     Checking calculator-the-solver v0.0.1 (/opt/crater/workdir)
Dec 19 12:38:37.372 INFO [stderr] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
Dec 19 12:38:37.372 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 12:38:37.372 INFO [stderr]   |
Dec 19 12:38:37.372 INFO [stderr] 1 | #![feature(option_filter)]
Dec 19 12:38:37.372 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 19 12:38:37.372 INFO [stderr]   |
Dec 19 12:38:37.372 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 12:38:37.372 INFO [stderr] 
Dec 19 12:38:37.768 INFO [stderr] warning: the feature `option_filter` has been stable since 1.27.0 and no longer requires an attribute to enable
Dec 19 12:38:37.768 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 12:38:37.768 INFO [stderr]   |
Dec 19 12:38:37.768 INFO [stderr] 1 | #![feature(option_filter)]
Dec 19 12:38:37.768 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 19 12:38:37.768 INFO [stderr]   |
Dec 19 12:38:37.768 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 12:38:37.768 INFO [stderr] 
Dec 19 12:38:38.032 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.03s
Dec 19 12:38:38.938 INFO running `"docker" "inspect" "b266873269c9f6b67c40d6fe7494e8cbb0a69d404163eb1b9d4b215392cafb5e"`
Dec 19 12:38:39.188 INFO running `"docker" "rm" "-f" "b266873269c9f6b67c40d6fe7494e8cbb0a69d404163eb1b9d4b215392cafb5e"`
Dec 19 12:38:39.544 INFO [stdout] b266873269c9f6b67c40d6fe7494e8cbb0a69d404163eb1b9d4b215392cafb5e