Dec 04 13:37:40.856 INFO checking muktakosh/unicorn against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 13:37:40.856 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 04 13:37:41.308 INFO [stdout] 8fcd800a2339fda6f2ee05f921ca19b60749b4a336c77d3fef3336bbe854dee1
Dec 04 13:37:41.311 INFO running `"docker" "start" "-a" "8fcd800a2339fda6f2ee05f921ca19b60749b4a336c77d3fef3336bbe854dee1"`
Dec 04 13:37:43.255 INFO [stderr] usermod: no changes
Dec 04 13:37:43.454 INFO [stderr]     Checking serde v0.8.21
Dec 04 13:37:43.454 INFO [stderr]    Compiling syntex_pos v0.52.0
Dec 04 13:37:43.455 INFO [stderr]    Compiling syn v0.10.5
Dec 04 13:37:43.463 INFO [stderr]     Checking net2 v0.2.26
Dec 04 13:37:43.467 INFO [stderr]     Checking clap v2.19.2
Dec 04 13:37:43.467 INFO [stderr]    Compiling term v0.4.4
Dec 04 13:37:45.871 INFO [stderr]     Checking miow v0.1.5
Dec 04 13:37:49.151 INFO [stderr]     Checking mio v0.5.1
Dec 04 13:37:49.795 INFO [stderr]    Compiling syntex_errors v0.52.0
Dec 04 13:38:01.100 INFO [stderr]     Checking ws v0.5.3
Dec 04 13:38:01.345 INFO [stderr]    Compiling serde_codegen_internals v0.11.3
Dec 04 13:38:01.832 INFO [stderr]    Compiling syntex_syntax v0.52.0
Dec 04 13:38:06.892 INFO [stderr]     Checking serde_json v0.8.4
Dec 04 13:38:49.506 INFO [stderr]    Compiling syntex v0.52.0
Dec 04 13:38:51.043 INFO [stderr]    Compiling serde_codegen v0.8.21
Dec 04 13:38:56.626 INFO [stderr]    Compiling libunicorn v0.0.1 (/source)
Dec 04 13:39:02.896 INFO [stderr] warning: variable does not need to be mutable
Dec 04 13:39:02.896 INFO [stderr]   --> src/router.rs:80:21
Dec 04 13:39:02.896 INFO [stderr]    |
Dec 04 13:39:02.896 INFO [stderr] 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Dec 04 13:39:02.896 INFO [stderr]    |                     ----^
Dec 04 13:39:02.896 INFO [stderr]    |                     |
Dec 04 13:39:02.896 INFO [stderr]    |                     help: remove this `mut`
Dec 04 13:39:02.896 INFO [stderr]    |
Dec 04 13:39:02.896 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 13:39:02.896 INFO [stderr] 
Dec 04 13:39:03.151 INFO [stderr] warning: variable does not need to be mutable
Dec 04 13:39:03.151 INFO [stderr]   --> src/router.rs:80:21
Dec 04 13:39:03.152 INFO [stderr]    |
Dec 04 13:39:03.152 INFO [stderr] 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Dec 04 13:39:03.153 INFO [stderr]    |                     ----^
Dec 04 13:39:03.153 INFO [stderr]    |                     |
Dec 04 13:39:03.153 INFO [stderr]    |                     help: remove this `mut`
Dec 04 13:39:03.154 INFO [stderr]    |
Dec 04 13:39:03.154 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 13:39:03.154 INFO [stderr] 
Dec 04 13:39:05.164 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
Dec 04 13:39:05.183 INFO [stderr] su: No module specific data is present
Dec 04 13:39:06.321 INFO running `"docker" "inspect" "8fcd800a2339fda6f2ee05f921ca19b60749b4a336c77d3fef3336bbe854dee1"`
Dec 04 13:39:06.580 INFO running `"docker" "rm" "-f" "8fcd800a2339fda6f2ee05f921ca19b60749b4a336c77d3fef3336bbe854dee1"`
Dec 04 13:39:06.900 INFO [stdout] 8fcd800a2339fda6f2ee05f921ca19b60749b4a336c77d3fef3336bbe854dee1