Sep 17 12:02:18.413 INFO checking muktakosh/unicorn against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 17 12:02:18.413 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 17 12:02:18.413 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-2/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 12:02:18.840 INFO blam! a58ce176c14d1d6601b54f5eff6b49ddbb5ac2545f17c47f6f549640f8a1d9b4
Sep 17 12:02:18.843 INFO running `"docker" "start" "-a" "a58ce176c14d1d6601b54f5eff6b49ddbb5ac2545f17c47f6f549640f8a1d9b4"`
Sep 17 12:02:20.118 INFO kablam! usermod: no changes
Sep 17 12:02:20.343 INFO kablam!    Compiling rustc-serialize v0.3.22
Sep 17 12:02:20.343 INFO kablam!    Compiling log v0.3.6
Sep 17 12:02:20.343 INFO kablam!    Compiling libc v0.2.18
Sep 17 12:02:20.351 INFO kablam!     Checking unicode-normalization v0.1.3
Sep 17 12:02:20.391 INFO kablam!     Checking serde v0.8.21
Sep 17 12:02:20.391 INFO kablam!    Compiling syn v0.10.5
Sep 17 12:02:20.391 INFO kablam!     Checking unicode-bidi v0.2.4
Sep 17 12:02:20.391 INFO kablam!     Checking net2 v0.2.26
Sep 17 12:02:23.763 INFO kablam!     Checking rand v0.3.15
Sep 17 12:02:23.804 INFO kablam!     Checking nix v0.5.1
Sep 17 12:02:24.224 INFO kablam!     Checking clap v2.19.2
Sep 17 12:02:26.387 INFO kablam!    Compiling term v0.4.4
Sep 17 12:02:31.383 INFO kablam!     Checking miow v0.1.5
Sep 17 12:02:32.459 INFO kablam!     Checking idna v0.1.0
Sep 17 12:02:49.448 INFO kablam!     Checking url v1.2.4
Sep 17 12:02:49.535 INFO kablam!     Checking mio v0.5.1
Sep 17 12:02:50.192 INFO kablam!    Compiling serde_codegen_internals v0.11.3
Sep 17 12:02:57.619 INFO kablam!     Checking ws v0.5.3
Sep 17 12:02:59.760 INFO kablam!     Checking serde_json v0.8.4
Sep 17 12:03:01.255 INFO kablam!    Compiling syntex_pos v0.52.0
Sep 17 12:03:03.559 INFO kablam!    Compiling syntex_errors v0.52.0
Sep 17 12:03:07.493 INFO kablam!    Compiling syntex_syntax v0.52.0
Sep 17 12:03:58.799 INFO kablam!    Compiling syntex v0.52.0
Sep 17 12:04:00.346 INFO kablam!    Compiling serde_codegen v0.8.21
Sep 17 12:04:07.123 INFO kablam!    Compiling libunicorn v0.0.1 (/source)
Sep 17 12:04:12.235 INFO kablam! warning: variable does not need to be mutable
Sep 17 12:04:12.236 INFO kablam!   --> src/router.rs:80:21
Sep 17 12:04:12.236 INFO kablam!    |
Sep 17 12:04:12.236 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 17 12:04:12.237 INFO kablam!    |                     ----^
Sep 17 12:04:12.237 INFO kablam!    |                     |
Sep 17 12:04:12.238 INFO kablam!    |                     help: remove this `mut`
Sep 17 12:04:12.238 INFO kablam!    |
Sep 17 12:04:12.238 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 12:04:12.239 INFO kablam! 
Sep 17 12:04:12.400 INFO kablam! warning: variable does not need to be mutable
Sep 17 12:04:12.400 INFO kablam!   --> src/router.rs:80:21
Sep 17 12:04:12.401 INFO kablam!    |
Sep 17 12:04:12.401 INFO kablam! 80 |         if let Some(mut t) = self.topics.get_mut(topic_id) {
Sep 17 12:04:12.402 INFO kablam!    |                     ----^
Sep 17 12:04:12.402 INFO kablam!    |                     |
Sep 17 12:04:12.402 INFO kablam!    |                     help: remove this `mut`
Sep 17 12:04:12.403 INFO kablam!    |
Sep 17 12:04:12.403 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 12:04:12.403 INFO kablam! 
Sep 17 12:04:13.487 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
Sep 17 12:04:13.494 INFO kablam! su: No module specific data is present
Sep 17 12:04:14.822 INFO running `"docker" "rm" "-f" "a58ce176c14d1d6601b54f5eff6b49ddbb5ac2545f17c47f6f549640f8a1d9b4"`
Sep 17 12:04:15.167 INFO blam! a58ce176c14d1d6601b54f5eff6b49ddbb5ac2545f17c47f6f549640f8a1d9b4