Sep 14 03:32:29.306 INFO checking muktakosh/unicorn against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 03:32:29.306 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 03:32:29.306 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-4/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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=1000" "-e" "CMD=cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 03:32:29.749 INFO blam! ae3c0406f315b655200b441d1d44926b572d41a0fa24fbad925052a29567edf9
Sep 14 03:32:29.750 INFO running `"docker" "start" "-a" "ae3c0406f315b655200b441d1d44926b572d41a0fa24fbad925052a29567edf9"`
Sep 14 03:32:31.371 INFO kablam! usermod: no changes
Sep 14 03:32:31.655 INFO kablam!    Compiling rustc-serialize v0.3.22
Sep 14 03:32:31.659 INFO kablam!    Compiling unicode-xid v0.0.3
Sep 14 03:32:31.659 INFO kablam!    Compiling libc v0.2.18
Sep 14 03:32:31.668 INFO kablam!     Checking unicode-normalization v0.1.3
Sep 14 03:32:31.680 INFO kablam!     Checking serde v0.8.21
Sep 14 03:32:31.680 INFO kablam!     Checking net2 v0.2.26
Sep 14 03:32:31.680 INFO kablam!     Checking unicode-bidi v0.2.4
Sep 14 03:32:31.680 INFO kablam!     Checking nix v0.5.1
Sep 14 03:32:33.359 INFO kablam!    Compiling syn v0.10.5
Sep 14 03:32:33.486 INFO kablam!    Compiling term v0.4.4
Sep 14 03:32:34.752 INFO kablam!     Checking time v0.1.35
Sep 14 03:32:36.672 INFO kablam!     Checking miow v0.1.5
Sep 14 03:32:41.507 INFO kablam!     Checking idna v0.1.0
Sep 14 03:32:49.181 INFO kablam!     Checking mio v0.5.1
Sep 14 03:32:49.592 INFO kablam!     Checking url v1.2.4
Sep 14 03:32:57.659 INFO kablam!    Compiling serde_codegen_internals v0.11.3
Sep 14 03:32:58.659 INFO kablam!     Checking ws v0.5.3
Sep 14 03:33:03.428 INFO kablam!     Checking serde_json v0.8.4
Sep 14 03:33:04.752 INFO kablam!    Compiling syntex_pos v0.52.0
Sep 14 03:33:07.736 INFO kablam!    Compiling syntex_errors v0.52.0
Sep 14 03:33:12.132 INFO kablam!    Compiling syntex_syntax v0.52.0
Sep 14 03:34:01.396 INFO kablam!    Compiling syntex v0.52.0
Sep 14 03:34:02.811 INFO kablam!    Compiling serde_codegen v0.8.21
Sep 14 03:34:09.590 INFO kablam!    Compiling libunicorn v0.0.1 (file:///source)
Sep 14 03:34:14.409 INFO kablam! warning: variable does not need to be mutable
Sep 14 03:34:14.409 INFO kablam!   --> src/router.rs:80:21
Sep 14 03:34:14.409 INFO kablam!    |
Sep 14 03:34:14.409 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 14 03:34:14.409 INFO kablam!    |                     ----^
Sep 14 03:34:14.409 INFO kablam!    |                     |
Sep 14 03:34:14.409 INFO kablam!    |                     help: remove this `mut`
Sep 14 03:34:14.415 INFO kablam!    |
Sep 14 03:34:14.415 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 03:34:14.415 INFO kablam! 
Sep 14 03:34:14.535 INFO kablam! warning: variable does not need to be mutable
Sep 14 03:34:14.535 INFO kablam!   --> src/router.rs:80:21
Sep 14 03:34:14.535 INFO kablam!    |
Sep 14 03:34:14.535 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 14 03:34:14.535 INFO kablam!    |                     ----^
Sep 14 03:34:14.535 INFO kablam!    |                     |
Sep 14 03:34:14.535 INFO kablam!    |                     help: remove this `mut`
Sep 14 03:34:14.535 INFO kablam!    |
Sep 14 03:34:14.535 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 03:34:14.535 INFO kablam! 
Sep 14 03:34:15.529 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 44s
Sep 14 03:34:15.542 INFO kablam! su: No module specific data is present
Sep 14 03:34:17.038 INFO running `"docker" "rm" "-f" "ae3c0406f315b655200b441d1d44926b572d41a0fa24fbad925052a29567edf9"`
Sep 14 03:34:17.325 INFO blam! ae3c0406f315b655200b441d1d44926b572d41a0fa24fbad925052a29567edf9