Oct 13 14:46:58.143 INFO checking gitter-slack-0.1.1 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 14:46:58.145 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 13 14:46:58.660 INFO blam! e03bcad4ea913fcd9836de8ac78257139d0be17d2d6e5c161d54d046859a5824
Oct 13 14:46:58.668 INFO running `"docker" "start" "-a" "e03bcad4ea913fcd9836de8ac78257139d0be17d2d6e5c161d54d046859a5824"`
Oct 13 14:46:59.983 INFO kablam! usermod: no changes
Oct 13 14:47:00.064 INFO kablam! warning: only one of `license` or `license-file` is necessary
Oct 13 14:47:00.354 INFO kablam!     Checking gitter-slack v0.1.1 (/source)
Oct 13 14:47:11.770 INFO kablam! warning: variable does not need to be mutable
Oct 13 14:47:11.770 INFO kablam!    --> src/main.rs:139:17
Oct 13 14:47:11.770 INFO kablam!     |
Oct 13 14:47:11.770 INFO kablam! 139 |             let mut bf = &mut buffer;
Oct 13 14:47:11.770 INFO kablam!     |                 ----^^
Oct 13 14:47:11.770 INFO kablam!     |                 |
Oct 13 14:47:11.770 INFO kablam!     |                 help: remove this `mut`
Oct 13 14:47:11.770 INFO kablam!     |
Oct 13 14:47:11.770 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 14:47:11.770 INFO kablam! 
Oct 13 14:47:12.087 INFO kablam! warning: variable does not need to be mutable
Oct 13 14:47:12.087 INFO kablam!    --> src/main.rs:139:17
Oct 13 14:47:12.087 INFO kablam!     |
Oct 13 14:47:12.087 INFO kablam! 139 |             let mut bf = &mut buffer;
Oct 13 14:47:12.088 INFO kablam!     |                 ----^^
Oct 13 14:47:12.088 INFO kablam!     |                 |
Oct 13 14:47:12.088 INFO kablam!     |                 help: remove this `mut`
Oct 13 14:47:12.088 INFO kablam!     |
Oct 13 14:47:12.088 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 14:47:12.088 INFO kablam! 
Oct 13 14:47:12.169 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 12.16s
Oct 13 14:47:12.195 INFO kablam! su: No module specific data is present
Oct 13 14:47:12.980 INFO running `"docker" "rm" "-f" "e03bcad4ea913fcd9836de8ac78257139d0be17d2d6e5c161d54d046859a5824"`
Oct 13 14:47:13.320 INFO blam! e03bcad4ea913fcd9836de8ac78257139d0be17d2d6e5c161d54d046859a5824