Dec 18 01:54:55.332 INFO checking dahlia/gitter-slack against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 01:54:55.332 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 01:54:55.850 INFO [stdout] 7a5e4249af03cafba4a771c46c500ab39e4f7cfb720a88efd2b6c8ca66f7ac8d
Dec 18 01:54:55.852 INFO running `"docker" "start" "-a" "7a5e4249af03cafba4a771c46c500ab39e4f7cfb720a88efd2b6c8ca66f7ac8d"`
Dec 18 01:54:57.100 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 18 01:54:57.297 INFO [stderr]     Checking net2 v0.2.31
Dec 18 01:54:57.303 INFO [stderr]     Checking bytes v0.4.5
Dec 18 01:54:57.303 INFO [stderr]     Checking openssl-sys v0.9.17
Dec 18 01:54:57.303 INFO [stderr]     Checking chrono v0.4.0
Dec 18 01:54:58.389 INFO [stderr]     Checking openssl v0.9.17
Dec 18 01:54:58.426 INFO [stderr]     Checking mio v0.6.10
Dec 18 01:54:58.596 INFO [stderr]     Checking tokio-io v0.1.3
Dec 18 01:55:00.176 INFO [stderr]     Checking tokio-core v0.1.9
Dec 18 01:55:01.820 INFO [stderr]     Checking tokio-proto v0.1.1
Dec 18 01:55:02.408 INFO [stderr]     Checking native-tls v0.1.4
Dec 18 01:55:02.961 INFO [stderr]     Checking tokio-tls v0.1.3
Dec 18 01:55:04.430 INFO [stderr]     Checking hyper v0.11.2
Dec 18 01:55:07.797 INFO [stderr]     Checking hyper-tls v0.1.2
Dec 18 01:55:08.243 INFO [stderr]     Checking gitter-slack v0.1.1 (/opt/crater/workdir)
Dec 18 01:55:09.560 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:55:09.560 INFO [stderr]    --> src/main.rs:139:17
Dec 18 01:55:09.560 INFO [stderr]     |
Dec 18 01:55:09.560 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 18 01:55:09.560 INFO [stderr]     |                 ----^^
Dec 18 01:55:09.560 INFO [stderr]     |                 |
Dec 18 01:55:09.560 INFO [stderr]     |                 help: remove this `mut`
Dec 18 01:55:09.560 INFO [stderr]     |
Dec 18 01:55:09.562 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 01:55:09.562 INFO [stderr] 
Dec 18 01:55:09.572 INFO [stderr] warning: variable does not need to be mutable
Dec 18 01:55:09.572 INFO [stderr]    --> src/main.rs:139:17
Dec 18 01:55:09.573 INFO [stderr]     |
Dec 18 01:55:09.573 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 18 01:55:09.573 INFO [stderr]     |                 ----^^
Dec 18 01:55:09.573 INFO [stderr]     |                 |
Dec 18 01:55:09.573 INFO [stderr]     |                 help: remove this `mut`
Dec 18 01:55:09.573 INFO [stderr]     |
Dec 18 01:55:09.573 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 01:55:09.573 INFO [stderr] 
Dec 18 01:55:09.732 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.65s
Dec 18 01:55:10.610 INFO running `"docker" "inspect" "7a5e4249af03cafba4a771c46c500ab39e4f7cfb720a88efd2b6c8ca66f7ac8d"`
Dec 18 01:55:10.958 INFO running `"docker" "rm" "-f" "7a5e4249af03cafba4a771c46c500ab39e4f7cfb720a88efd2b6c8ca66f7ac8d"`
Dec 18 01:55:11.212 INFO [stdout] 7a5e4249af03cafba4a771c46c500ab39e4f7cfb720a88efd2b6c8ca66f7ac8d