Dec 12 14:26:04.312 INFO checking gitter-slack-0.1.1 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 14:26:04.312 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 14:26:04.796 INFO [stdout] a0d3efb462ddf43c4a8eb1bf379cfa10739c2596729bf2c9912a5b908f779e84
Dec 12 14:26:04.802 INFO running `"docker" "start" "-a" "a0d3efb462ddf43c4a8eb1bf379cfa10739c2596729bf2c9912a5b908f779e84"`
Dec 12 14:26:06.144 INFO [stderr] usermod: no changes
Dec 12 14:26:06.200 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 12 14:26:06.472 INFO [stderr]     Checking chrono v0.4.6
Dec 12 14:26:08.751 INFO [stderr]     Checking gitter-slack v0.1.1 (/source)
Dec 12 14:26:19.829 INFO [stderr] warning: variable does not need to be mutable
Dec 12 14:26:19.829 INFO [stderr]    --> src/main.rs:139:17
Dec 12 14:26:19.829 INFO [stderr]     |
Dec 12 14:26:19.829 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 12 14:26:19.829 INFO [stderr]     |                 ----^^
Dec 12 14:26:19.829 INFO [stderr]     |                 |
Dec 12 14:26:19.829 INFO [stderr]     |                 help: remove this `mut`
Dec 12 14:26:19.829 INFO [stderr]     |
Dec 12 14:26:19.836 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 14:26:19.836 INFO [stderr] 
Dec 12 14:26:19.943 INFO [stderr] warning: variable does not need to be mutable
Dec 12 14:26:19.943 INFO [stderr]    --> src/main.rs:139:17
Dec 12 14:26:19.943 INFO [stderr]     |
Dec 12 14:26:19.944 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 12 14:26:19.944 INFO [stderr]     |                 ----^^
Dec 12 14:26:19.948 INFO [stderr]     |                 |
Dec 12 14:26:19.948 INFO [stderr]     |                 help: remove this `mut`
Dec 12 14:26:19.948 INFO [stderr]     |
Dec 12 14:26:19.948 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 14:26:19.948 INFO [stderr] 
Dec 12 14:26:20.033 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.87s
Dec 12 14:26:20.050 INFO [stderr] su: No module specific data is present
Dec 12 14:26:21.208 INFO running `"docker" "inspect" "a0d3efb462ddf43c4a8eb1bf379cfa10739c2596729bf2c9912a5b908f779e84"`
Dec 12 14:26:21.526 INFO running `"docker" "rm" "-f" "a0d3efb462ddf43c4a8eb1bf379cfa10739c2596729bf2c9912a5b908f779e84"`
Dec 12 14:26:21.932 INFO [stdout] a0d3efb462ddf43c4a8eb1bf379cfa10739c2596729bf2c9912a5b908f779e84