Oct 12 23:07:56.711 INFO checking dahlia/gitter-slack against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 23:07:56.712 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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"`
Oct 12 23:07:57.128 INFO blam! da53c37d4f38e1592432eda93671279a98a989ec08d3fcbecda6cdf597dfbaf2
Oct 12 23:07:57.136 INFO running `"docker" "start" "-a" "da53c37d4f38e1592432eda93671279a98a989ec08d3fcbecda6cdf597dfbaf2"`
Oct 12 23:07:59.192 INFO kablam! usermod: no changes
Oct 12 23:07:59.256 INFO kablam! warning: only one of `license` or `license-file` is necessary
Oct 12 23:07:59.496 INFO kablam!     Checking serde_json v1.0.2
Oct 12 23:07:59.496 INFO kablam!     Checking futures-cpupool v0.1.5
Oct 12 23:07:59.509 INFO kablam!     Checking chrono v0.4.0
Oct 12 23:07:59.509 INFO kablam!     Checking mime v0.3.3
Oct 12 23:07:59.509 INFO kablam!     Checking tokio-proto v0.1.1
Oct 12 23:07:59.509 INFO kablam!     Checking tokio-tls v0.1.3
Oct 12 23:08:06.193 INFO kablam!     Checking hyper v0.11.2
Oct 12 23:08:11.373 INFO kablam!     Checking hyper-tls v0.1.2
Oct 12 23:08:13.248 INFO kablam!     Checking gitter-slack v0.1.1 (/source)
Oct 12 23:08:16.141 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:08:16.141 INFO kablam!    --> src/main.rs:139:17
Oct 12 23:08:16.141 INFO kablam!     |
Oct 12 23:08:16.142 INFO kablam! 139 |             let mut bf = &mut buffer;
Oct 12 23:08:16.142 INFO kablam!     |                 ----^^
Oct 12 23:08:16.142 INFO kablam!     |                 |
Oct 12 23:08:16.142 INFO kablam!     |                 help: remove this `mut`
Oct 12 23:08:16.143 INFO kablam!     |
Oct 12 23:08:16.143 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 23:08:16.143 INFO kablam! 
Oct 12 23:08:16.237 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:08:16.237 INFO kablam!    --> src/main.rs:139:17
Oct 12 23:08:16.237 INFO kablam!     |
Oct 12 23:08:16.237 INFO kablam! 139 |             let mut bf = &mut buffer;
Oct 12 23:08:16.238 INFO kablam!     |                 ----^^
Oct 12 23:08:16.238 INFO kablam!     |                 |
Oct 12 23:08:16.238 INFO kablam!     |                 help: remove this `mut`
Oct 12 23:08:16.238 INFO kablam!     |
Oct 12 23:08:16.239 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 23:08:16.239 INFO kablam! 
Oct 12 23:08:16.319 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 17.07s
Oct 12 23:08:16.337 INFO kablam! su: No module specific data is present
Oct 12 23:08:16.882 INFO running `"docker" "rm" "-f" "da53c37d4f38e1592432eda93671279a98a989ec08d3fcbecda6cdf597dfbaf2"`
Oct 12 23:08:17.224 INFO blam! da53c37d4f38e1592432eda93671279a98a989ec08d3fcbecda6cdf597dfbaf2