Aug 31 13:04:03.581 INFO checking specs_engine-0.0.3 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 13:04:03.581 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 13:04:03.581 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-2/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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 +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 13:04:03.822 INFO blam! cbc6a775a95dbd591b7559e2ed1044e6db6846fd2c2a7ee414ffb9f8c1bc2362
Aug 31 13:04:03.824 INFO running `"docker" "start" "-a" "cbc6a775a95dbd591b7559e2ed1044e6db6846fd2c2a7ee414ffb9f8c1bc2362"`
Aug 31 13:04:04.582 INFO kablam!     Checking slog v1.7.1
Aug 31 13:04:04.584 INFO kablam!     Checking pulse v0.5.3
Aug 31 13:04:05.469 INFO kablam!     Checking specs v0.7.1
Aug 31 13:04:05.596 INFO kablam!     Checking slog-extra v0.1.2
Aug 31 13:04:06.243 INFO kablam!     Checking slog-stream v1.2.1
Aug 31 13:04:06.949 INFO kablam!     Checking slog-term v1.5.0
Aug 31 13:04:09.560 INFO kablam!     Checking specs_engine v0.0.3 (file:///source)
Aug 31 13:04:10.346 INFO kablam! warning: variable does not need to be mutable
Aug 31 13:04:10.346 INFO kablam!   --> src/machine.rs:39:17
Aug 31 13:04:10.346 INFO kablam!    |
Aug 31 13:04:10.346 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Aug 31 13:04:10.346 INFO kablam!    |                 ----^^^^^
Aug 31 13:04:10.346 INFO kablam!    |                 |
Aug 31 13:04:10.346 INFO kablam!    |                 help: remove this `mut`
Aug 31 13:04:10.346 INFO kablam!    |
Aug 31 13:04:10.346 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 31 13:04:10.346 INFO kablam! 
Aug 31 13:04:10.350 INFO kablam! warning: variable does not need to be mutable
Aug 31 13:04:10.351 INFO kablam!   --> src/machine.rs:73:30
Aug 31 13:04:10.351 INFO kablam!    |
Aug 31 13:04:10.351 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Aug 31 13:04:10.351 INFO kablam!    |                              ----^^^^^
Aug 31 13:04:10.351 INFO kablam!    |                              |
Aug 31 13:04:10.351 INFO kablam!    |                              help: remove this `mut`
Aug 31 13:04:10.351 INFO kablam! 
Aug 31 13:04:11.087 INFO kablam! warning: variable does not need to be mutable
Aug 31 13:04:11.087 INFO kablam!   --> src/machine.rs:39:17
Aug 31 13:04:11.087 INFO kablam!    |
Aug 31 13:04:11.087 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Aug 31 13:04:11.087 INFO kablam!    |                 ----^^^^^
Aug 31 13:04:11.087 INFO kablam!    |                 |
Aug 31 13:04:11.087 INFO kablam!    |                 help: remove this `mut`
Aug 31 13:04:11.087 INFO kablam!    |
Aug 31 13:04:11.087 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 31 13:04:11.087 INFO kablam! 
Aug 31 13:04:11.095 INFO kablam! warning: variable does not need to be mutable
Aug 31 13:04:11.095 INFO kablam!   --> src/machine.rs:73:30
Aug 31 13:04:11.095 INFO kablam!    |
Aug 31 13:04:11.095 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Aug 31 13:04:11.095 INFO kablam!    |                              ----^^^^^
Aug 31 13:04:11.095 INFO kablam!    |                              |
Aug 31 13:04:11.095 INFO kablam!    |                              help: remove this `mut`
Aug 31 13:04:11.095 INFO kablam! 
Aug 31 13:04:11.185 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.66s
Aug 31 13:04:11.200 INFO kablam! su: No module specific data is present
Aug 31 13:04:11.612 INFO running `"docker" "rm" "-f" "cbc6a775a95dbd591b7559e2ed1044e6db6846fd2c2a7ee414ffb9f8c1bc2362"`
Aug 31 13:04:11.730 INFO blam! cbc6a775a95dbd591b7559e2ed1044e6db6846fd2c2a7ee414ffb9f8c1bc2362