Sep 17 16:58:14.973 INFO checking specs_engine-0.0.3 against master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690 for pr-54033
Sep 17 16:58:14.973 INFO running: cargo +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets
Sep 17 16:58:14.974 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54033/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-5/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/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 +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 16:58:15.467 INFO blam! a2d8f62bf3b7367ce9bb87a7ddf7591b689b47e46d3cb279c1487eccdeb8864b
Sep 17 16:58:15.469 INFO running `"docker" "start" "-a" "a2d8f62bf3b7367ce9bb87a7ddf7591b689b47e46d3cb279c1487eccdeb8864b"`
Sep 17 16:58:17.471 INFO kablam! usermod: no changes
Sep 17 16:58:17.619 INFO kablam!     Checking slog v1.7.1
Sep 17 16:58:17.627 INFO kablam!     Checking pulse v0.5.3
Sep 17 16:58:18.276 INFO kablam!     Checking specs v0.7.1
Sep 17 16:58:18.531 INFO kablam!     Checking slog-extra v0.1.2
Sep 17 16:58:19.166 INFO kablam!     Checking slog-stream v1.2.1
Sep 17 16:58:19.636 INFO kablam!     Checking slog-term v1.5.0
Sep 17 16:58:21.506 INFO kablam!     Checking specs_engine v0.0.3 (/source)
Sep 17 16:58:22.186 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:58:22.187 INFO kablam!   --> src/machine.rs:39:17
Sep 17 16:58:22.187 INFO kablam!    |
Sep 17 16:58:22.187 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 17 16:58:22.187 INFO kablam!    |                 ----^^^^^
Sep 17 16:58:22.187 INFO kablam!    |                 |
Sep 17 16:58:22.187 INFO kablam!    |                 help: remove this `mut`
Sep 17 16:58:22.187 INFO kablam!    |
Sep 17 16:58:22.187 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 16:58:22.187 INFO kablam! 
Sep 17 16:58:22.189 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:58:22.189 INFO kablam!   --> src/machine.rs:73:30
Sep 17 16:58:22.189 INFO kablam!    |
Sep 17 16:58:22.189 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 17 16:58:22.189 INFO kablam!    |                              ----^^^^^
Sep 17 16:58:22.189 INFO kablam!    |                              |
Sep 17 16:58:22.189 INFO kablam!    |                              help: remove this `mut`
Sep 17 16:58:22.189 INFO kablam! 
Sep 17 16:58:22.454 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:58:22.454 INFO kablam!   --> src/machine.rs:39:17
Sep 17 16:58:22.454 INFO kablam!    |
Sep 17 16:58:22.454 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 17 16:58:22.454 INFO kablam!    |                 ----^^^^^
Sep 17 16:58:22.454 INFO kablam!    |                 |
Sep 17 16:58:22.454 INFO kablam!    |                 help: remove this `mut`
Sep 17 16:58:22.454 INFO kablam!    |
Sep 17 16:58:22.454 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 17 16:58:22.454 INFO kablam! 
Sep 17 16:58:22.457 INFO kablam! warning: variable does not need to be mutable
Sep 17 16:58:22.457 INFO kablam!   --> src/machine.rs:73:30
Sep 17 16:58:22.457 INFO kablam!    |
Sep 17 16:58:22.457 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 17 16:58:22.457 INFO kablam!    |                              ----^^^^^
Sep 17 16:58:22.458 INFO kablam!    |                              |
Sep 17 16:58:22.458 INFO kablam!    |                              help: remove this `mut`
Sep 17 16:58:22.458 INFO kablam! 
Sep 17 16:58:22.860 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.35s
Sep 17 16:58:22.868 INFO kablam! su: No module specific data is present
Sep 17 16:58:23.467 INFO running `"docker" "rm" "-f" "a2d8f62bf3b7367ce9bb87a7ddf7591b689b47e46d3cb279c1487eccdeb8864b"`
Sep 17 16:58:23.625 INFO blam! a2d8f62bf3b7367ce9bb87a7ddf7591b689b47e46d3cb279c1487eccdeb8864b