Dec 19 07:14:12.668 INFO checking thephred/aoc2015 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 07:14:12.668 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/thephred/aoc2015:/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 07:14:12.866 INFO [stdout] 72f3faa5f5ede6b5fb8b7dbbbeff4593167e6d21c9db9f21d18a802aaf29c7f2
Dec 19 07:14:12.868 INFO running `"docker" "start" "-a" "72f3faa5f5ede6b5fb8b7dbbbeff4593167e6d21c9db9f21d18a802aaf29c7f2"`
Dec 19 07:14:13.494 INFO [stderr]     Checking md5 v0.3.6
Dec 19 07:14:13.494 INFO [stderr]     Checking itertools v0.7.4
Dec 19 07:14:15.008 INFO [stderr]     Checking aoc2015 v0.1.0 (/opt/crater/workdir)
Dec 19 07:14:15.420 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.420 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 07:14:15.420 INFO [stderr]   |
Dec 19 07:14:15.420 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 19 07:14:15.420 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:14:15.420 INFO [stderr]   |
Dec 19 07:14:15.420 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 07:14:15.420 INFO [stderr] 
Dec 19 07:14:15.420 INFO [stderr] warning: the feature `universal_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.420 INFO [stderr]  --> src/lib.rs:2:12
Dec 19 07:14:15.420 INFO [stderr]   |
Dec 19 07:14:15.420 INFO [stderr] 2 | #![feature(universal_impl_trait)]
Dec 19 07:14:15.420 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 19 07:14:15.420 INFO [stderr] 
Dec 19 07:14:15.420 INFO [stderr] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.420 INFO [stderr]  --> src/lib.rs:3:12
Dec 19 07:14:15.421 INFO [stderr]   |
Dec 19 07:14:15.421 INFO [stderr] 3 | #![feature(inclusive_range_syntax)]
Dec 19 07:14:15.421 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:14:15.421 INFO [stderr] 
Dec 19 07:14:15.421 INFO [stderr] warning: the feature `entry_and_modify` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.421 INFO [stderr]  --> src/lib.rs:5:12
Dec 19 07:14:15.421 INFO [stderr]   |
Dec 19 07:14:15.421 INFO [stderr] 5 | #![feature(entry_and_modify)]
Dec 19 07:14:15.421 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 07:14:15.421 INFO [stderr] 
Dec 19 07:14:15.421 INFO [stderr] warning: the feature `entry_or_default` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 19 07:14:15.421 INFO [stderr]  --> src/lib.rs:4:12
Dec 19 07:14:15.421 INFO [stderr]   |
Dec 19 07:14:15.421 INFO [stderr] 4 | #![feature(entry_or_default)]
Dec 19 07:14:15.421 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 07:14:15.421 INFO [stderr] 
Dec 19 07:14:15.676 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.676 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 07:14:15.676 INFO [stderr]   |
Dec 19 07:14:15.676 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 19 07:14:15.676 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:14:15.676 INFO [stderr]   |
Dec 19 07:14:15.676 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 07:14:15.676 INFO [stderr] 
Dec 19 07:14:15.676 INFO [stderr] warning: the feature `universal_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.676 INFO [stderr]  --> src/lib.rs:2:12
Dec 19 07:14:15.676 INFO [stderr]   |
Dec 19 07:14:15.676 INFO [stderr] 2 | #![feature(universal_impl_trait)]
Dec 19 07:14:15.676 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 19 07:14:15.676 INFO [stderr] 
Dec 19 07:14:15.676 INFO [stderr] warning: the feature `inclusive_range_syntax` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.676 INFO [stderr]  --> src/lib.rs:3:12
Dec 19 07:14:15.676 INFO [stderr]   |
Dec 19 07:14:15.676 INFO [stderr] 3 | #![feature(inclusive_range_syntax)]
Dec 19 07:14:15.677 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:14:15.677 INFO [stderr] 
Dec 19 07:14:15.677 INFO [stderr] warning: the feature `entry_and_modify` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 07:14:15.677 INFO [stderr]  --> src/lib.rs:5:12
Dec 19 07:14:15.677 INFO [stderr]   |
Dec 19 07:14:15.677 INFO [stderr] 5 | #![feature(entry_and_modify)]
Dec 19 07:14:15.677 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 07:14:15.677 INFO [stderr] 
Dec 19 07:14:15.677 INFO [stderr] warning: the feature `entry_or_default` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 19 07:14:15.677 INFO [stderr]  --> src/lib.rs:4:12
Dec 19 07:14:15.677 INFO [stderr]   |
Dec 19 07:14:15.677 INFO [stderr] 4 | #![feature(entry_or_default)]
Dec 19 07:14:15.677 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 07:14:15.677 INFO [stderr] 
Dec 19 07:14:15.713 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
Dec 19 07:14:16.268 INFO running `"docker" "inspect" "72f3faa5f5ede6b5fb8b7dbbbeff4593167e6d21c9db9f21d18a802aaf29c7f2"`
Dec 19 07:14:16.626 INFO running `"docker" "rm" "-f" "72f3faa5f5ede6b5fb8b7dbbbeff4593167e6d21c9db9f21d18a802aaf29c7f2"`
Dec 19 07:14:16.908 INFO [stdout] 72f3faa5f5ede6b5fb8b7dbbbeff4593167e6d21c9db9f21d18a802aaf29c7f2