Nov 28 00:06:46.415 INFO checking muktakosh/unicorn against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 00:06:46.417 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-6/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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 28 00:06:46.844 INFO [stdout] 89b8309c816434dd75635c3a2e0a8981946a3d0893cb2e29b8bd06653169da72
Nov 28 00:06:46.850 INFO running `"docker" "start" "-a" "89b8309c816434dd75635c3a2e0a8981946a3d0893cb2e29b8bd06653169da72"`
Nov 28 00:06:48.449 INFO [stderr] usermod: no changes
Nov 28 00:06:48.684 INFO [stderr]    Compiling rustc-serialize v0.3.22
Nov 28 00:06:48.687 INFO [stderr]     Checking serde v0.8.21
Nov 28 00:06:48.687 INFO [stderr]    Compiling syn v0.10.5
Nov 28 00:06:48.687 INFO [stderr]     Checking net2 v0.2.26
Nov 28 00:06:48.688 INFO [stderr]     Checking nix v0.5.1
Nov 28 00:06:48.688 INFO [stderr]     Checking clap v2.19.2
Nov 28 00:06:48.688 INFO [stderr]    Compiling term v0.4.4
Nov 28 00:06:50.924 INFO [stderr]     Checking miow v0.1.5
Nov 28 00:07:03.377 INFO [stderr]     Checking mio v0.5.1
Nov 28 00:07:09.368 INFO [stderr]    Compiling serde_codegen_internals v0.11.3
Nov 28 00:07:10.245 INFO [stderr]     Checking ws v0.5.3
Nov 28 00:07:16.554 INFO [stderr]    Compiling syntex_pos v0.52.0
Nov 28 00:07:17.993 INFO [stderr]     Checking serde_json v0.8.4
Nov 28 00:07:19.267 INFO [stderr]    Compiling syntex_errors v0.52.0
Nov 28 00:07:23.221 INFO [stderr]    Compiling syntex_syntax v0.52.0
Nov 28 00:08:11.036 INFO [stderr]    Compiling syntex v0.52.0
Nov 28 00:08:12.417 INFO [stderr]    Compiling serde_codegen v0.8.21
Nov 28 00:08:18.681 INFO [stderr]    Compiling libunicorn v0.0.1 (/source)
Nov 28 00:08:23.875 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:08:23.875 INFO [stderr]   --> src/router.rs:80:21
Nov 28 00:08:23.876 INFO [stderr]    |
Nov 28 00:08:23.876 INFO [stderr] 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Nov 28 00:08:23.876 INFO [stderr]    |                     ----^
Nov 28 00:08:23.876 INFO [stderr]    |                     |
Nov 28 00:08:23.876 INFO [stderr]    |                     help: remove this `mut`
Nov 28 00:08:23.876 INFO [stderr]    |
Nov 28 00:08:23.877 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 00:08:23.877 INFO [stderr] 
Nov 28 00:08:23.902 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:08:23.902 INFO [stderr]   --> src/router.rs:80:21
Nov 28 00:08:23.903 INFO [stderr]    |
Nov 28 00:08:23.903 INFO [stderr] 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Nov 28 00:08:23.908 INFO [stderr]    |                     ----^
Nov 28 00:08:23.908 INFO [stderr]    |                     |
Nov 28 00:08:23.909 INFO [stderr]    |                     help: remove this `mut`
Nov 28 00:08:23.909 INFO [stderr]    |
Nov 28 00:08:23.909 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 00:08:23.909 INFO [stderr] 
Nov 28 00:08:25.368 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 36s
Nov 28 00:08:25.388 INFO [stderr] su: No module specific data is present
Nov 28 00:08:26.280 INFO running `"docker" "inspect" "89b8309c816434dd75635c3a2e0a8981946a3d0893cb2e29b8bd06653169da72"`
Nov 28 00:08:26.555 INFO running `"docker" "rm" "-f" "89b8309c816434dd75635c3a2e0a8981946a3d0893cb2e29b8bd06653169da72"`
Nov 28 00:08:26.836 INFO [stdout] 89b8309c816434dd75635c3a2e0a8981946a3d0893cb2e29b8bd06653169da72