Dec 19 18:31:01.401 INFO checking dahlia/gitter-slack against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 18:31:01.401 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/dahlia/gitter-slack:/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 18:31:01.948 INFO [stdout] e7c629a216d01d4a322dc4732b791d67bda6017861bb670d62c5fc77f8cde4d1
Dec 19 18:31:01.950 INFO running `"docker" "start" "-a" "e7c629a216d01d4a322dc4732b791d67bda6017861bb670d62c5fc77f8cde4d1"`
Dec 19 18:31:03.264 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 19 18:31:03.438 INFO [stderr]     Checking net2 v0.2.31
Dec 19 18:31:03.448 INFO [stderr]     Checking bytes v0.4.5
Dec 19 18:31:03.448 INFO [stderr]     Checking futures-cpupool v0.1.5
Dec 19 18:31:03.448 INFO [stderr]     Checking openssl v0.9.17
Dec 19 18:31:03.448 INFO [stderr]     Checking chrono v0.4.0
Dec 19 18:31:04.435 INFO [stderr]     Checking mio v0.6.10
Dec 19 18:31:04.624 INFO [stderr]     Checking tokio-io v0.1.3
Dec 19 18:31:06.355 INFO [stderr]     Checking tokio-core v0.1.9
Dec 19 18:31:07.560 INFO [stderr]     Checking native-tls v0.1.4
Dec 19 18:31:07.735 INFO [stderr]     Checking tokio-proto v0.1.1
Dec 19 18:31:08.164 INFO [stderr]     Checking tokio-tls v0.1.3
Dec 19 18:31:09.720 INFO [stderr]     Checking hyper v0.11.2
Dec 19 18:31:13.141 INFO [stderr]     Checking hyper-tls v0.1.2
Dec 19 18:31:13.600 INFO [stderr]     Checking gitter-slack v0.1.1 (/opt/crater/workdir)
Dec 19 18:31:14.749 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:31:14.750 INFO [stderr]    --> src/main.rs:139:17
Dec 19 18:31:14.750 INFO [stderr]     |
Dec 19 18:31:14.750 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 19 18:31:14.750 INFO [stderr]     |                 ----^^
Dec 19 18:31:14.750 INFO [stderr]     |                 |
Dec 19 18:31:14.750 INFO [stderr]     |                 help: remove this `mut`
Dec 19 18:31:14.750 INFO [stderr]     |
Dec 19 18:31:14.750 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 18:31:14.750 INFO [stderr] 
Dec 19 18:31:14.772 INFO [stderr] warning: variable does not need to be mutable
Dec 19 18:31:14.772 INFO [stderr]    --> src/main.rs:139:17
Dec 19 18:31:14.772 INFO [stderr]     |
Dec 19 18:31:14.772 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 19 18:31:14.772 INFO [stderr]     |                 ----^^
Dec 19 18:31:14.772 INFO [stderr]     |                 |
Dec 19 18:31:14.772 INFO [stderr]     |                 help: remove this `mut`
Dec 19 18:31:14.772 INFO [stderr]     |
Dec 19 18:31:14.772 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 18:31:14.772 INFO [stderr] 
Dec 19 18:31:14.827 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.58s
Dec 19 18:31:15.332 INFO running `"docker" "inspect" "e7c629a216d01d4a322dc4732b791d67bda6017861bb670d62c5fc77f8cde4d1"`
Dec 19 18:31:15.632 INFO running `"docker" "rm" "-f" "e7c629a216d01d4a322dc4732b791d67bda6017861bb670d62c5fc77f8cde4d1"`
Dec 19 18:31:15.898 INFO [stdout] e7c629a216d01d4a322dc4732b791d67bda6017861bb670d62c5fc77f8cde4d1