Sep 01 14:06:29.488 INFO checking muktakosh/unicorn against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 01 14:06:29.488 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 14:06:29.488 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 14:06:29.713 INFO blam! 42081d44dc7c01db89c83cc3c479a2391b4acba03b2e06921326acac9d25bf28
Sep 01 14:06:29.716 INFO running `"docker" "start" "-a" "42081d44dc7c01db89c83cc3c479a2391b4acba03b2e06921326acac9d25bf28"`
Sep 01 14:06:30.749 INFO kablam!    Compiling rustc-serialize v0.3.22
Sep 01 14:06:30.765 INFO kablam!     Checking unicode-normalization v0.1.3
Sep 01 14:06:30.777 INFO kablam!     Checking serde v0.8.21
Sep 01 14:06:30.796 INFO kablam!    Compiling syn v0.10.5
Sep 01 14:06:30.800 INFO kablam!     Checking unicode-bidi v0.2.4
Sep 01 14:06:30.802 INFO kablam!     Checking net2 v0.2.26
Sep 01 14:06:30.809 INFO kablam!     Checking nix v0.5.1
Sep 01 14:06:30.819 INFO kablam!    Compiling term v0.4.4
Sep 01 14:06:34.265 INFO kablam!     Checking miow v0.1.5
Sep 01 14:06:40.335 INFO kablam!     Checking idna v0.1.0
Sep 01 14:06:49.550 INFO kablam!     Checking url v1.2.4
Sep 01 14:06:54.479 INFO kablam!     Checking mio v0.5.1
Sep 01 14:06:56.727 INFO kablam!    Compiling serde_codegen_internals v0.11.3
Sep 01 14:07:01.015 INFO kablam!     Checking ws v0.5.3
Sep 01 14:07:06.065 INFO kablam!     Checking serde_json v0.8.4
Sep 01 14:07:06.784 INFO kablam!    Compiling syntex_pos v0.52.0
Sep 01 14:07:09.757 INFO kablam!    Compiling syntex_errors v0.52.0
Sep 01 14:07:14.859 INFO kablam!    Compiling syntex_syntax v0.52.0
Sep 01 14:08:12.950 INFO kablam!    Compiling syntex v0.52.0
Sep 01 14:08:14.168 INFO kablam!    Compiling serde_codegen v0.8.21
Sep 01 14:08:19.080 INFO kablam!    Compiling libunicorn v0.0.1 (file:///source)
Sep 01 14:08:24.076 INFO kablam! warning: variable does not need to be mutable
Sep 01 14:08:24.076 INFO kablam!   --> src/router.rs:80:21
Sep 01 14:08:24.076 INFO kablam!    |
Sep 01 14:08:24.076 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 01 14:08:24.076 INFO kablam!    |                     ----^
Sep 01 14:08:24.076 INFO kablam!    |                     |
Sep 01 14:08:24.077 INFO kablam!    |                     help: remove this `mut`
Sep 01 14:08:24.077 INFO kablam!    |
Sep 01 14:08:24.077 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 14:08:24.077 INFO kablam! 
Sep 01 14:08:24.083 INFO kablam! warning: variable does not need to be mutable
Sep 01 14:08:24.083 INFO kablam!   --> src/router.rs:80:21
Sep 01 14:08:24.083 INFO kablam!    |
Sep 01 14:08:24.083 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 01 14:08:24.083 INFO kablam!    |                     ----^
Sep 01 14:08:24.083 INFO kablam!    |                     |
Sep 01 14:08:24.083 INFO kablam!    |                     help: remove this `mut`
Sep 01 14:08:24.084 INFO kablam!    |
Sep 01 14:08:24.084 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 14:08:24.085 INFO kablam! 
Sep 01 14:08:25.843 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 55s
Sep 01 14:08:25.858 INFO kablam! su: No module specific data is present
Sep 01 14:08:26.352 INFO running `"docker" "rm" "-f" "42081d44dc7c01db89c83cc3c479a2391b4acba03b2e06921326acac9d25bf28"`
Sep 01 14:08:26.518 INFO blam! 42081d44dc7c01db89c83cc3c479a2391b4acba03b2e06921326acac9d25bf28