Nov 28 00:06:42.206 INFO checking muktakosh/unicorn against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 00:06:42.206 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 00:06:42.720 INFO [stdout] fdef818688fc4b874fbe10df3e465d144ed1636e9766cd28b451b14f9be96b62
Nov 28 00:06:42.722 INFO running `"docker" "start" "-a" "fdef818688fc4b874fbe10df3e465d144ed1636e9766cd28b451b14f9be96b62"`
Nov 28 00:06:44.824 INFO [stderr] usermod: no changes
Nov 28 00:06:45.096 INFO [stderr]    Compiling unicode-xid v0.0.3
Nov 28 00:06:45.096 INFO [stderr]    Compiling libc v0.2.18
Nov 28 00:06:45.099 INFO [stderr]    Compiling quote v0.3.10
Nov 28 00:06:45.108 INFO [stderr]     Checking unicode-normalization v0.1.3
Nov 28 00:06:45.108 INFO [stderr]    Compiling syntex_pos v0.52.0
Nov 28 00:06:45.108 INFO [stderr]     Checking unicode-bidi v0.2.4
Nov 28 00:06:45.108 INFO [stderr]     Checking net2 v0.2.26
Nov 28 00:06:45.108 INFO [stderr]     Checking nix v0.5.1
Nov 28 00:06:46.985 INFO [stderr]     Checking clap v2.19.2
Nov 28 00:06:47.119 INFO [stderr]    Compiling term v0.4.4
Nov 28 00:06:48.305 INFO [stderr]     Checking miow v0.1.5
Nov 28 00:06:49.833 INFO [stderr]    Compiling syn v0.10.5
Nov 28 00:06:51.748 INFO [stderr]     Checking idna v0.1.0
Nov 28 00:06:57.308 INFO [stderr]    Compiling syntex_errors v0.52.0
Nov 28 00:07:00.165 INFO [stderr]     Checking url v1.2.4
Nov 28 00:07:09.244 INFO [stderr]     Checking mio v0.5.1
Nov 28 00:07:09.920 INFO [stderr]    Compiling syntex_syntax v0.52.0
Nov 28 00:07:09.925 INFO [stderr]    Compiling serde_codegen_internals v0.11.3
Nov 28 00:07:12.320 INFO [stderr]     Checking ws v0.5.3
Nov 28 00:07:54.732 INFO [stderr]    Compiling syntex v0.52.0
Nov 28 00:07:56.346 INFO [stderr]    Compiling serde_codegen v0.8.21
Nov 28 00:08:03.178 INFO [stderr]    Compiling libunicorn v0.0.1 (/source)
Nov 28 00:08:08.648 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:08:08.648 INFO [stderr]   --> src/router.rs:80:21
Nov 28 00:08:08.648 INFO [stderr]    |
Nov 28 00:08:08.648 INFO [stderr] 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Nov 28 00:08:08.648 INFO [stderr]    |                     ----^
Nov 28 00:08:08.648 INFO [stderr]    |                     |
Nov 28 00:08:08.648 INFO [stderr]    |                     help: remove this `mut`
Nov 28 00:08:08.648 INFO [stderr]    |
Nov 28 00:08:08.648 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 00:08:08.648 INFO [stderr] 
Nov 28 00:08:09.150 INFO [stderr] warning: variable does not need to be mutable
Nov 28 00:08:09.150 INFO [stderr]   --> src/router.rs:80:21
Nov 28 00:08:09.150 INFO [stderr]    |
Nov 28 00:08:09.150 INFO [stderr] 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Nov 28 00:08:09.150 INFO [stderr]    |                     ----^
Nov 28 00:08:09.150 INFO [stderr]    |                     |
Nov 28 00:08:09.150 INFO [stderr]    |                     help: remove this `mut`
Nov 28 00:08:09.168 INFO [stderr]    |
Nov 28 00:08:09.168 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 00:08:09.168 INFO [stderr] 
Nov 28 00:08:10.671 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
Nov 28 00:08:10.689 INFO [stderr] su: No module specific data is present
Nov 28 00:08:12.112 INFO running `"docker" "inspect" "fdef818688fc4b874fbe10df3e465d144ed1636e9766cd28b451b14f9be96b62"`
Nov 28 00:08:12.518 INFO running `"docker" "rm" "-f" "fdef818688fc4b874fbe10df3e465d144ed1636e9766cd28b451b14f9be96b62"`
Nov 28 00:08:12.917 INFO [stdout] fdef818688fc4b874fbe10df3e465d144ed1636e9766cd28b451b14f9be96b62