Dec 19 22:19:14.343 INFO checking PlasmaPower/kmer-counter against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 22:19:14.343 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/PlasmaPower/kmer-counter:/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 22:19:14.762 INFO [stdout] 8ecbd6c0e65ba86d91649be87d331d8613328f6a9085f67e1491d692cb199f73
Dec 19 22:19:14.764 INFO running `"docker" "start" "-a" "8ecbd6c0e65ba86d91649be87d331d8613328f6a9085f67e1491d692cb199f73"`
Dec 19 22:19:16.200 INFO [stderr]    Compiling backtrace-sys v0.1.5
Dec 19 22:19:16.200 INFO [stderr]     Checking memmap v0.5.0
Dec 19 22:19:16.200 INFO [stderr]     Checking clap v2.19.0
Dec 19 22:19:16.200 INFO [stderr]     Checking jobsteal v0.5.1
Dec 19 22:19:16.202 INFO [stderr]     Checking env_logger v0.3.5
Dec 19 22:19:17.933 INFO [stderr]     Checking backtrace v0.3.0
Dec 19 22:19:18.576 INFO [stderr]     Checking error-chain v0.7.1
Dec 19 22:19:22.178 INFO [stderr]     Checking kmer-counter v0.1.0 (/opt/crater/workdir)
Dec 19 22:19:23.745 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:19:23.745 INFO [stderr]   --> src/kmer_tree.rs:42:24
Dec 19 22:19:23.745 INFO [stderr]    |
Dec 19 22:19:23.745 INFO [stderr] 42 |         while let Some(mut count) = self.counts.get_mut(self.index) {
Dec 19 22:19:23.745 INFO [stderr]    |                        ----^^^^^
Dec 19 22:19:23.745 INFO [stderr]    |                        |
Dec 19 22:19:23.745 INFO [stderr]    |                        help: remove this `mut`
Dec 19 22:19:23.745 INFO [stderr]    |
Dec 19 22:19:23.745 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 22:19:23.745 INFO [stderr] 
Dec 19 22:19:23.796 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:19:23.796 INFO [stderr]   --> src/kmer_tree.rs:42:24
Dec 19 22:19:23.796 INFO [stderr]    |
Dec 19 22:19:23.796 INFO [stderr] 42 |         while let Some(mut count) = self.counts.get_mut(self.index) {
Dec 19 22:19:23.796 INFO [stderr]    |                        ----^^^^^
Dec 19 22:19:23.796 INFO [stderr]    |                        |
Dec 19 22:19:23.796 INFO [stderr]    |                        help: remove this `mut`
Dec 19 22:19:23.797 INFO [stderr]    |
Dec 19 22:19:23.797 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 22:19:23.797 INFO [stderr] 
Dec 19 22:19:24.001 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.91s
Dec 19 22:19:25.355 INFO running `"docker" "inspect" "8ecbd6c0e65ba86d91649be87d331d8613328f6a9085f67e1491d692cb199f73"`
Dec 19 22:19:25.708 INFO running `"docker" "rm" "-f" "8ecbd6c0e65ba86d91649be87d331d8613328f6a9085f67e1491d692cb199f73"`
Dec 19 22:19:26.060 INFO [stdout] 8ecbd6c0e65ba86d91649be87d331d8613328f6a9085f67e1491d692cb199f73