Aug 30 02:07:17.984 INFO checking specs_engine-0.0.3 against try#bc5a74802bb3ffc82f51ef04bca58d64220124c4 for pr-53699
Aug 30 02:07:17.985 INFO running: cargo +bc5a74802bb3ffc82f51ef04bca58d64220124c4-alt check --frozen --all --all-targets
Aug 30 02:07:17.985 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53699/try#bc5a74802bb3ffc82f51ef04bca58d64220124c4:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-2/try#bc5a74802bb3ffc82f51ef04bca58d64220124c4:/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 +bc5a74802bb3ffc82f51ef04bca58d64220124c4-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 02:07:18.185 INFO blam! 0ea6146ecfb15778631a995183a90e126e1abf15d9e133d1519eeede26ea690c
Aug 30 02:07:18.187 INFO running `"docker" "start" "-a" "0ea6146ecfb15778631a995183a90e126e1abf15d9e133d1519eeede26ea690c"`
Aug 30 02:07:19.006 INFO kablam!     Checking slog v1.7.1
Aug 30 02:07:19.016 INFO kablam!     Checking pulse v0.5.3
Aug 30 02:07:19.945 INFO kablam!     Checking specs v0.7.1
Aug 30 02:07:19.977 INFO kablam!     Checking slog-extra v0.1.2
Aug 30 02:07:20.432 INFO kablam!     Checking slog-stream v1.2.1
Aug 30 02:07:20.893 INFO kablam!     Checking slog-term v1.5.0
Aug 30 02:07:24.351 INFO kablam!     Checking specs_engine v0.0.3 (file:///source)
Aug 30 02:07:25.534 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:25.534 INFO kablam!   --> src/machine.rs:39:17
Aug 30 02:07:25.534 INFO kablam!    |
Aug 30 02:07:25.534 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Aug 30 02:07:25.534 INFO kablam!    |                 ----^^^^^
Aug 30 02:07:25.534 INFO kablam!    |                 |
Aug 30 02:07:25.534 INFO kablam!    |                 help: remove this `mut`
Aug 30 02:07:25.534 INFO kablam!    |
Aug 30 02:07:25.534 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 02:07:25.534 INFO kablam! 
Aug 30 02:07:25.539 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:25.539 INFO kablam!   --> src/machine.rs:73:30
Aug 30 02:07:25.539 INFO kablam!    |
Aug 30 02:07:25.539 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Aug 30 02:07:25.539 INFO kablam!    |                              ----^^^^^
Aug 30 02:07:25.539 INFO kablam!    |                              |
Aug 30 02:07:25.539 INFO kablam!    |                              help: remove this `mut`
Aug 30 02:07:25.539 INFO kablam! 
Aug 30 02:07:25.805 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:25.805 INFO kablam!   --> src/machine.rs:39:17
Aug 30 02:07:25.806 INFO kablam!    |
Aug 30 02:07:25.806 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Aug 30 02:07:25.806 INFO kablam!    |                 ----^^^^^
Aug 30 02:07:25.806 INFO kablam!    |                 |
Aug 30 02:07:25.806 INFO kablam!    |                 help: remove this `mut`
Aug 30 02:07:25.806 INFO kablam!    |
Aug 30 02:07:25.806 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 02:07:25.806 INFO kablam! 
Aug 30 02:07:25.810 INFO kablam! warning: variable does not need to be mutable
Aug 30 02:07:25.810 INFO kablam!   --> src/machine.rs:73:30
Aug 30 02:07:25.810 INFO kablam!    |
Aug 30 02:07:25.810 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Aug 30 02:07:25.810 INFO kablam!    |                              ----^^^^^
Aug 30 02:07:25.811 INFO kablam!    |                              |
Aug 30 02:07:25.811 INFO kablam!    |                              help: remove this `mut`
Aug 30 02:07:25.811 INFO kablam! 
Aug 30 02:07:26.729 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 7.82s
Aug 30 02:07:26.734 INFO kablam! su: No module specific data is present
Aug 30 02:07:27.096 INFO running `"docker" "rm" "-f" "0ea6146ecfb15778631a995183a90e126e1abf15d9e133d1519eeede26ea690c"`
Aug 30 02:07:27.201 INFO blam! 0ea6146ecfb15778631a995183a90e126e1abf15d9e133d1519eeede26ea690c