Aug 30 02:07:20.366 INFO checking specs_engine-0.0.3 against master#545f22340f72ee0efaf6463efb43a2840e3d35db for pr-53699
Aug 30 02:07:20.367 INFO running: cargo +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets
Aug 30 02:07:20.367 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53699/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-0/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/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 +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 02:07:20.561 INFO blam! d4083b5f3258962d026048c7f0fb7d58f81690fb325b9f58d4adef9a77b6a83e
Aug 30 02:07:20.564 INFO running `"docker" "start" "-a" "d4083b5f3258962d026048c7f0fb7d58f81690fb325b9f58d4adef9a77b6a83e"`
Aug 30 02:07:21.261 INFO kablam!     Checking slog v1.7.1
Aug 30 02:07:21.263 INFO kablam!     Checking specs v0.7.1
Aug 30 02:07:22.200 INFO kablam!     Checking slog-extra v0.1.2
Aug 30 02:07:22.624 INFO kablam!     Checking slog-stream v1.2.1
Aug 30 02:07:23.003 INFO kablam!     Checking slog-term v1.5.0
Aug 30 02:07:25.476 INFO kablam!     Checking specs_engine v0.0.3 (file:///source)
Aug 30 02:07:26.545 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:26.546 INFO kablam!   --> src/machine.rs:39:17
Aug 30 02:07:26.546 INFO kablam!    |
Aug 30 02:07:26.546 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Aug 30 02:07:26.546 INFO kablam!    |                 ----^^^^^
Aug 30 02:07:26.546 INFO kablam!    |                 |
Aug 30 02:07:26.546 INFO kablam!    |                 help: remove this `mut`
Aug 30 02:07:26.546 INFO kablam!    |
Aug 30 02:07:26.546 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 02:07:26.546 INFO kablam! 
Aug 30 02:07:26.551 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:26.551 INFO kablam!   --> src/machine.rs:73:30
Aug 30 02:07:26.551 INFO kablam!    |
Aug 30 02:07:26.551 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Aug 30 02:07:26.551 INFO kablam!    |                              ----^^^^^
Aug 30 02:07:26.551 INFO kablam!    |                              |
Aug 30 02:07:26.551 INFO kablam!    |                              help: remove this `mut`
Aug 30 02:07:26.551 INFO kablam! 
Aug 30 02:07:26.747 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:26.747 INFO kablam!   --> src/machine.rs:39:17
Aug 30 02:07:26.747 INFO kablam!    |
Aug 30 02:07:26.747 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Aug 30 02:07:26.747 INFO kablam!    |                 ----^^^^^
Aug 30 02:07:26.747 INFO kablam!    |                 |
Aug 30 02:07:26.747 INFO kablam!    |                 help: remove this `mut`
Aug 30 02:07:26.747 INFO kablam!    |
Aug 30 02:07:26.747 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 02:07:26.747 INFO kablam! 
Aug 30 02:07:26.752 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:26.752 INFO kablam!   --> src/machine.rs:73:30
Aug 30 02:07:26.752 INFO kablam!    |
Aug 30 02:07:26.752 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Aug 30 02:07:26.752 INFO kablam!    |                              ----^^^^^
Aug 30 02:07:26.752 INFO kablam!    |                              |
Aug 30 02:07:26.752 INFO kablam!    |                              help: remove this `mut`
Aug 30 02:07:26.752 INFO kablam! 
Aug 30 02:07:27.574 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.39s
Aug 30 02:07:27.580 INFO kablam! su: No module specific data is present
Aug 30 02:07:27.985 INFO running `"docker" "rm" "-f" "d4083b5f3258962d026048c7f0fb7d58f81690fb325b9f58d4adef9a77b6a83e"`
Aug 30 02:07:28.099 INFO blam! d4083b5f3258962d026048c7f0fb7d58f81690fb325b9f58d4adef9a77b6a83e