Nov 01 22:32:02.607 INFO checking gitter-slack-0.1.1 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 22:32:02.607 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-0/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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"`
Nov 01 22:32:03.144 INFO blam! 44ebdd3a55303f7916aa0afe41c2391d37be6a5c55f2ee742248839934e5e46d
Nov 01 22:32:03.156 INFO running `"docker" "start" "-a" "44ebdd3a55303f7916aa0afe41c2391d37be6a5c55f2ee742248839934e5e46d"`
Nov 01 22:32:04.303 INFO kablam! usermod: no changes
Nov 01 22:32:04.384 INFO kablam! warning: only one of `license` or `license-file` is necessary
Nov 01 22:32:04.673 INFO kablam!     Checking chrono v0.4.6
Nov 01 22:32:07.549 INFO kablam!     Checking gitter-slack v0.1.1 (/source)
Nov 01 22:32:17.726 INFO kablam! warning: variable does not need to be mutable
Nov 01 22:32:17.726 INFO kablam!    --> src/main.rs:139:17
Nov 01 22:32:17.727 INFO kablam!     |
Nov 01 22:32:17.727 INFO kablam! 139 |             let mut bf = &mut buffer;
Nov 01 22:32:17.727 INFO kablam!     |                 ----^^
Nov 01 22:32:17.727 INFO kablam!     |                 |
Nov 01 22:32:17.727 INFO kablam!     |                 help: remove this `mut`
Nov 01 22:32:17.727 INFO kablam!     |
Nov 01 22:32:17.727 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 01 22:32:17.727 INFO kablam! 
Nov 01 22:32:17.860 INFO kablam! warning: variable does not need to be mutable
Nov 01 22:32:17.860 INFO kablam!    --> src/main.rs:139:17
Nov 01 22:32:17.860 INFO kablam!     |
Nov 01 22:32:17.860 INFO kablam! 139 |             let mut bf = &mut buffer;
Nov 01 22:32:17.860 INFO kablam!     |                 ----^^
Nov 01 22:32:17.860 INFO kablam!     |                 |
Nov 01 22:32:17.860 INFO kablam!     |                 help: remove this `mut`
Nov 01 22:32:17.860 INFO kablam!     |
Nov 01 22:32:17.860 INFO kablam!     = note: #[warn(unused_mut)] on by default
Nov 01 22:32:17.860 INFO kablam! 
Nov 01 22:32:17.932 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 13.58s
Nov 01 22:32:17.947 INFO kablam! su: No module specific data is present
Nov 01 22:32:18.670 INFO running `"docker" "rm" "-f" "44ebdd3a55303f7916aa0afe41c2391d37be6a5c55f2ee742248839934e5e46d"`
Nov 01 22:32:18.976 INFO blam! 44ebdd3a55303f7916aa0afe41c2391d37be6a5c55f2ee742248839934e5e46d