Dec 11 20:15:11.265 INFO checking dahlia/gitter-slack against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 20:15:11.266 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 11 20:15:11.680 INFO [stdout] c07a8729385a6bf4388a836a908098e99b627e05168c38aa7be51407c26df2cc
Dec 11 20:15:11.688 INFO running `"docker" "start" "-a" "c07a8729385a6bf4388a836a908098e99b627e05168c38aa7be51407c26df2cc"`
Dec 11 20:15:13.276 INFO [stderr] usermod: no changes
Dec 11 20:15:13.340 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 11 20:15:13.550 INFO [stderr]    Compiling openssl-sys v0.9.17
Dec 11 20:15:13.550 INFO [stderr]     Checking tokio-io v0.1.3
Dec 11 20:15:13.558 INFO [stderr]     Checking chrono v0.4.0
Dec 11 20:15:16.844 INFO [stderr]     Checking tokio-core v0.1.9
Dec 11 20:15:17.200 INFO [stderr]    Compiling openssl v0.9.17
Dec 11 20:15:20.481 INFO [stderr]     Checking tokio-proto v0.1.1
Dec 11 20:15:23.804 INFO [stderr]     Checking hyper v0.11.2
Dec 11 20:15:24.327 INFO [stderr]     Checking native-tls v0.1.4
Dec 11 20:15:25.536 INFO [stderr]     Checking tokio-tls v0.1.3
Dec 11 20:15:29.592 INFO [stderr]     Checking hyper-tls v0.1.2
Dec 11 20:15:31.188 INFO [stderr]     Checking gitter-slack v0.1.1 (/source)
Dec 11 20:15:33.448 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:15:33.448 INFO [stderr]    --> src/main.rs:139:17
Dec 11 20:15:33.448 INFO [stderr]     |
Dec 11 20:15:33.448 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 11 20:15:33.448 INFO [stderr]     |                 ----^^
Dec 11 20:15:33.448 INFO [stderr]     |                 |
Dec 11 20:15:33.448 INFO [stderr]     |                 help: remove this `mut`
Dec 11 20:15:33.448 INFO [stderr]     |
Dec 11 20:15:33.448 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 20:15:33.448 INFO [stderr] 
Dec 11 20:15:33.567 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:15:33.567 INFO [stderr]    --> src/main.rs:139:17
Dec 11 20:15:33.567 INFO [stderr]     |
Dec 11 20:15:33.567 INFO [stderr] 139 |             let mut bf = &mut buffer;
Dec 11 20:15:33.567 INFO [stderr]     |                 ----^^
Dec 11 20:15:33.567 INFO [stderr]     |                 |
Dec 11 20:15:33.567 INFO [stderr]     |                 help: remove this `mut`
Dec 11 20:15:33.567 INFO [stderr]     |
Dec 11 20:15:33.567 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 20:15:33.567 INFO [stderr] 
Dec 11 20:15:33.616 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.30s
Dec 11 20:15:33.632 INFO [stderr] su: No module specific data is present
Dec 11 20:15:34.055 INFO running `"docker" "inspect" "c07a8729385a6bf4388a836a908098e99b627e05168c38aa7be51407c26df2cc"`
Dec 11 20:15:34.178 INFO running `"docker" "rm" "-f" "c07a8729385a6bf4388a836a908098e99b627e05168c38aa7be51407c26df2cc"`
Dec 11 20:15:34.339 INFO [stdout] c07a8729385a6bf4388a836a908098e99b627e05168c38aa7be51407c26df2cc