Sep 01 23:11:35.638 INFO checking specs_engine-0.0.3 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 01 23:11:35.638 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 23:11:35.638 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-0/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 23:11:35.865 INFO blam! 139fdd635823649b0d727a768032e164c05c958b1224150dda89d7da553a7565
Sep 01 23:11:35.867 INFO running `"docker" "start" "-a" "139fdd635823649b0d727a768032e164c05c958b1224150dda89d7da553a7565"`
Sep 01 23:11:36.757 INFO kablam!     Checking slog v1.7.1
Sep 01 23:11:36.759 INFO kablam!     Checking pulse v0.5.3
Sep 01 23:11:37.532 INFO kablam!     Checking slog-extra v0.1.2
Sep 01 23:11:37.606 INFO kablam!     Checking specs v0.7.1
Sep 01 23:11:38.218 INFO kablam!     Checking slog-stream v1.2.1
Sep 01 23:11:38.743 INFO kablam!     Checking slog-term v1.5.0
Sep 01 23:11:41.136 INFO kablam!     Checking specs_engine v0.0.3 (file:///source)
Sep 01 23:11:42.432 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:42.432 INFO kablam!   --> src/machine.rs:39:17
Sep 01 23:11:42.432 INFO kablam!    |
Sep 01 23:11:42.432 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 01 23:11:42.432 INFO kablam!    |                 ----^^^^^
Sep 01 23:11:42.432 INFO kablam!    |                 |
Sep 01 23:11:42.432 INFO kablam!    |                 help: remove this `mut`
Sep 01 23:11:42.432 INFO kablam!    |
Sep 01 23:11:42.432 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 23:11:42.432 INFO kablam! 
Sep 01 23:11:42.436 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:42.437 INFO kablam!   --> src/machine.rs:73:30
Sep 01 23:11:42.437 INFO kablam!    |
Sep 01 23:11:42.437 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 01 23:11:42.437 INFO kablam!    |                              ----^^^^^
Sep 01 23:11:42.437 INFO kablam!    |                              |
Sep 01 23:11:42.437 INFO kablam!    |                              help: remove this `mut`
Sep 01 23:11:42.437 INFO kablam! 
Sep 01 23:11:42.488 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:42.488 INFO kablam!   --> src/machine.rs:39:17
Sep 01 23:11:42.488 INFO kablam!    |
Sep 01 23:11:42.488 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 01 23:11:42.488 INFO kablam!    |                 ----^^^^^
Sep 01 23:11:42.488 INFO kablam!    |                 |
Sep 01 23:11:42.488 INFO kablam!    |                 help: remove this `mut`
Sep 01 23:11:42.488 INFO kablam!    |
Sep 01 23:11:42.488 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 23:11:42.488 INFO kablam! 
Sep 01 23:11:42.496 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:42.496 INFO kablam!   --> src/machine.rs:73:30
Sep 01 23:11:42.496 INFO kablam!    |
Sep 01 23:11:42.496 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 01 23:11:42.496 INFO kablam!    |                              ----^^^^^
Sep 01 23:11:42.496 INFO kablam!    |                              |
Sep 01 23:11:42.496 INFO kablam!    |                              help: remove this `mut`
Sep 01 23:11:42.496 INFO kablam! 
Sep 01 23:11:43.603 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.92s
Sep 01 23:11:43.609 INFO kablam! su: No module specific data is present
Sep 01 23:11:44.018 INFO running `"docker" "rm" "-f" "139fdd635823649b0d727a768032e164c05c958b1224150dda89d7da553a7565"`
Sep 01 23:11:44.141 INFO blam! 139fdd635823649b0d727a768032e164c05c958b1224150dda89d7da553a7565