Sep 03 17:16:12.673 INFO checking muktakosh/unicorn against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 03 17:16:12.673 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 03 17:16:12.673 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 03 17:16:12.929 INFO blam! 25ec4495d1a8b52ef5a93b461e2874bee7139f6445b586d2503c20e4116bd616
Sep 03 17:16:12.932 INFO running `"docker" "start" "-a" "25ec4495d1a8b52ef5a93b461e2874bee7139f6445b586d2503c20e4116bd616"`
Sep 03 17:16:14.062 INFO kablam!    Compiling rustc-serialize v0.3.22
Sep 03 17:16:14.062 INFO kablam!    Compiling libc v0.2.18
Sep 03 17:16:14.070 INFO kablam!    Compiling quote v0.3.10
Sep 03 17:16:14.110 INFO kablam!     Checking unicode-normalization v0.1.3
Sep 03 17:16:14.138 INFO kablam!     Checking dtoa v0.2.2
Sep 03 17:16:14.162 INFO kablam!     Checking serde v0.8.21
Sep 03 17:16:14.207 INFO kablam!     Checking httparse v1.2.1
Sep 03 17:16:14.239 INFO kablam!     Checking itoa v0.1.1
Sep 03 17:16:16.155 INFO kablam!     Checking unicode-bidi v0.2.4
Sep 03 17:16:17.667 INFO kablam!     Checking net2 v0.2.26
Sep 03 17:16:17.756 INFO kablam!     Checking nix v0.5.1
Sep 03 17:16:19.921 INFO kablam!    Compiling syn v0.10.5
Sep 03 17:16:20.688 INFO kablam!    Compiling term v0.4.4
Sep 03 17:16:21.293 INFO kablam!     Checking time v0.1.35
Sep 03 17:16:22.305 INFO kablam!     Checking miow v0.1.5
Sep 03 17:16:24.160 INFO kablam!     Checking idna v0.1.0
Sep 03 17:16:35.238 INFO kablam!     Checking url v1.2.4
Sep 03 17:16:43.026 INFO kablam!     Checking mio v0.5.1
Sep 03 17:16:45.407 INFO kablam!    Compiling serde_codegen_internals v0.11.3
Sep 03 17:16:48.174 INFO kablam!     Checking ws v0.5.3
Sep 03 17:16:52.413 INFO kablam!     Checking serde_json v0.8.4
Sep 03 17:16:52.786 INFO kablam!    Compiling syntex_pos v0.52.0
Sep 03 17:16:55.433 INFO kablam!    Compiling syntex_errors v0.52.0
Sep 03 17:17:00.600 INFO kablam!    Compiling syntex_syntax v0.52.0
Sep 03 17:17:57.272 INFO kablam!    Compiling syntex v0.52.0
Sep 03 17:17:58.386 INFO kablam!    Compiling serde_codegen v0.8.21
Sep 03 17:18:06.582 INFO kablam!    Compiling libunicorn v0.0.1 (file:///source)
Sep 03 17:18:11.501 INFO kablam! warning: variable does not need to be mutable
Sep 03 17:18:11.501 INFO kablam!   --> src/router.rs:80:21
Sep 03 17:18:11.502 INFO kablam!    |
Sep 03 17:18:11.502 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 03 17:18:11.502 INFO kablam!    |                     ----^
Sep 03 17:18:11.502 INFO kablam!    |                     |
Sep 03 17:18:11.502 INFO kablam!    |                     help: remove this `mut`
Sep 03 17:18:11.502 INFO kablam!    |
Sep 03 17:18:11.502 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 03 17:18:11.502 INFO kablam! 
Sep 03 17:18:11.523 INFO kablam! warning: variable does not need to be mutable
Sep 03 17:18:11.523 INFO kablam!   --> src/router.rs:80:21
Sep 03 17:18:11.523 INFO kablam!    |
Sep 03 17:18:11.523 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 03 17:18:11.523 INFO kablam!    |                     ----^
Sep 03 17:18:11.523 INFO kablam!    |                     |
Sep 03 17:18:11.523 INFO kablam!    |                     help: remove this `mut`
Sep 03 17:18:11.523 INFO kablam!    |
Sep 03 17:18:11.523 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 03 17:18:11.523 INFO kablam! 
Sep 03 17:18:12.434 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 58s
Sep 03 17:18:12.449 INFO kablam! su: No module specific data is present
Sep 03 17:18:12.839 INFO running `"docker" "rm" "-f" "25ec4495d1a8b52ef5a93b461e2874bee7139f6445b586d2503c20e4116bd616"`
Sep 03 17:18:12.952 INFO blam! 25ec4495d1a8b52ef5a93b461e2874bee7139f6445b586d2503c20e4116bd616