Aug 31 03:47:57.484 INFO checking muktakosh/unicorn against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Aug 31 03:47:57.484 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Aug 31 03:47:57.484 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-2/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 03:47:57.749 INFO blam! ad396a999ace927517c812d7ef6112971abda6f486825f13597d752cc319b60e
Aug 31 03:47:57.751 INFO running `"docker" "start" "-a" "ad396a999ace927517c812d7ef6112971abda6f486825f13597d752cc319b60e"`
Aug 31 03:47:58.822 INFO kablam!    Compiling unicode-xid v0.0.3
Aug 31 03:47:58.822 INFO kablam!    Compiling quote v0.3.10
Aug 31 03:47:58.871 INFO kablam!     Checking unicode-normalization v0.1.3
Aug 31 03:47:58.881 INFO kablam!     Checking slab v0.1.3
Aug 31 03:47:58.884 INFO kablam!     Checking bytes v0.3.0
Aug 31 03:47:58.892 INFO kablam!     Checking serde v0.8.21
Aug 31 03:47:58.896 INFO kablam!     Checking itoa v0.1.1
Aug 31 03:47:58.899 INFO kablam!     Checking dtoa v0.2.2
Aug 31 03:48:00.840 INFO kablam!    Compiling ws2_32-sys v0.2.1
Aug 31 03:48:01.028 INFO kablam!    Compiling syntex_pos v0.52.0
Aug 31 03:48:01.085 INFO kablam!     Checking unicode-bidi v0.2.4
Aug 31 03:48:02.647 INFO kablam!     Checking net2 v0.2.26
Aug 31 03:48:03.418 INFO kablam!     Checking nix v0.5.1
Aug 31 03:48:05.888 INFO kablam!    Compiling term v0.4.4
Aug 31 03:48:05.932 INFO kablam!    Compiling syn v0.10.5
Aug 31 03:48:06.743 INFO kablam!     Checking miow v0.1.5
Aug 31 03:48:09.274 INFO kablam!     Checking idna v0.1.0
Aug 31 03:48:18.020 INFO kablam!    Compiling syntex_errors v0.52.0
Aug 31 03:48:19.026 INFO kablam!     Checking url v1.2.4
Aug 31 03:48:26.561 INFO kablam!     Checking mio v0.5.1
Aug 31 03:48:31.396 INFO kablam!    Compiling syntex_syntax v0.52.0
Aug 31 03:48:32.109 INFO kablam!    Compiling serde_codegen_internals v0.11.3
Aug 31 03:48:33.355 INFO kablam!     Checking ws v0.5.3
Aug 31 03:48:34.865 INFO kablam!     Checking serde_json v0.8.4
Aug 31 03:49:38.994 INFO kablam!    Compiling syntex v0.52.0
Aug 31 03:49:41.182 INFO kablam!    Compiling serde_codegen v0.8.21
Aug 31 03:49:50.495 INFO kablam!    Compiling libunicorn v0.0.1 (file:///source)
Aug 31 03:49:56.282 INFO kablam! warning: variable does not need to be mutable
Aug 31 03:49:56.282 INFO kablam!   --> src/router.rs:80:21
Aug 31 03:49:56.282 INFO kablam!    |
Aug 31 03:49:56.282 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Aug 31 03:49:56.282 INFO kablam!    |                     ----^
Aug 31 03:49:56.282 INFO kablam!    |                     |
Aug 31 03:49:56.282 INFO kablam!    |                     help: remove this `mut`
Aug 31 03:49:56.283 INFO kablam!    |
Aug 31 03:49:56.283 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 31 03:49:56.283 INFO kablam! 
Aug 31 03:49:56.349 INFO kablam! warning: variable does not need to be mutable
Aug 31 03:49:56.350 INFO kablam!   --> src/router.rs:80:21
Aug 31 03:49:56.350 INFO kablam!    |
Aug 31 03:49:56.350 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Aug 31 03:49:56.350 INFO kablam!    |                     ----^
Aug 31 03:49:56.350 INFO kablam!    |                     |
Aug 31 03:49:56.350 INFO kablam!    |                     help: remove this `mut`
Aug 31 03:49:56.350 INFO kablam!    |
Aug 31 03:49:56.350 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 31 03:49:56.350 INFO kablam! 
Aug 31 03:49:57.835 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 59s
Aug 31 03:49:57.853 INFO kablam! su: No module specific data is present
Aug 31 03:49:58.399 INFO running `"docker" "rm" "-f" "ad396a999ace927517c812d7ef6112971abda6f486825f13597d752cc319b60e"`
Aug 31 03:49:58.560 INFO blam! ad396a999ace927517c812d7ef6112971abda6f486825f13597d752cc319b60e