Oct 12 16:57:11.175 INFO checking muktakosh/unicorn against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 16:57:11.175 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-0/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-0/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 16:57:11.658 INFO blam! 533195f0cb80733e986220420ff0914c1e8e64c634f0ce288e9c52a39888f81b
Oct 12 16:57:11.661 INFO running `"docker" "start" "-a" "533195f0cb80733e986220420ff0914c1e8e64c634f0ce288e9c52a39888f81b"`
Oct 12 16:57:12.937 INFO kablam! usermod: no changes
Oct 12 16:57:13.190 INFO kablam!    Compiling winapi v0.2.8
Oct 12 16:57:13.191 INFO kablam!    Compiling rustc-serialize v0.3.22
Oct 12 16:57:13.191 INFO kablam!    Compiling libc v0.2.18
Oct 12 16:57:13.197 INFO kablam!    Compiling syn v0.10.5
Oct 12 16:57:13.197 INFO kablam!     Checking net2 v0.2.26
Oct 12 16:57:13.198 INFO kablam!     Checking nix v0.5.1
Oct 12 16:57:13.198 INFO kablam!     Checking clap v2.19.2
Oct 12 16:57:16.410 INFO kablam!     Checking miow v0.1.5
Oct 12 16:57:17.100 INFO kablam!    Compiling kernel32-sys v0.2.2
Oct 12 16:57:18.570 INFO kablam!    Compiling term v0.4.4
Oct 12 16:57:27.703 INFO kablam!     Checking mio v0.5.1
Oct 12 16:57:31.339 INFO kablam!    Compiling serde_codegen_internals v0.11.3
Oct 12 16:57:31.456 INFO kablam!     Checking ws v0.5.3
Oct 12 16:57:36.722 INFO kablam!    Compiling syntex_pos v0.52.0
Oct 12 16:57:38.565 INFO kablam!    Compiling syntex_errors v0.52.0
Oct 12 16:57:41.850 INFO kablam!    Compiling syntex_syntax v0.52.0
Oct 12 16:58:29.173 INFO kablam!    Compiling syntex v0.52.0
Oct 12 16:58:30.774 INFO kablam!    Compiling serde_codegen v0.8.21
Oct 12 16:58:37.662 INFO kablam!    Compiling libunicorn v0.0.1 (/source)
Oct 12 16:58:42.840 INFO kablam! warning: variable does not need to be mutable
Oct 12 16:58:42.840 INFO kablam!   --> src/router.rs:80:21
Oct 12 16:58:42.840 INFO kablam!    |
Oct 12 16:58:42.840 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Oct 12 16:58:42.840 INFO kablam!    |                     ----^
Oct 12 16:58:42.840 INFO kablam!    |                     |
Oct 12 16:58:42.840 INFO kablam!    |                     help: remove this `mut`
Oct 12 16:58:42.840 INFO kablam!    |
Oct 12 16:58:42.840 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 16:58:42.840 INFO kablam! 
Oct 12 16:58:43.036 INFO kablam! warning: variable does not need to be mutable
Oct 12 16:58:43.036 INFO kablam!   --> src/router.rs:80:21
Oct 12 16:58:43.036 INFO kablam!    |
Oct 12 16:58:43.036 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Oct 12 16:58:43.036 INFO kablam!    |                     ----^
Oct 12 16:58:43.036 INFO kablam!    |                     |
Oct 12 16:58:43.036 INFO kablam!    |                     help: remove this `mut`
Oct 12 16:58:43.036 INFO kablam!    |
Oct 12 16:58:43.036 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 16:58:43.036 INFO kablam! 
Oct 12 16:58:44.828 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 31s
Oct 12 16:58:44.866 INFO kablam! su: No module specific data is present
Oct 12 16:58:46.048 INFO running `"docker" "rm" "-f" "533195f0cb80733e986220420ff0914c1e8e64c634f0ce288e9c52a39888f81b"`
Oct 12 16:58:46.361 INFO blam! 533195f0cb80733e986220420ff0914c1e8e64c634f0ce288e9c52a39888f81b