Sep 19 19:51:50.941 INFO checking specs_engine-0.0.3 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 19:51:50.941 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 19:51:50.941 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-2/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 19:51:51.178 INFO blam! f485ca76143a25f12a5ce6c21fa9344bbe22dbadf181633e8bd66c970afd6ca3
Sep 19 19:51:51.180 INFO running `"docker" "start" "-a" "f485ca76143a25f12a5ce6c21fa9344bbe22dbadf181633e8bd66c970afd6ca3"`
Sep 19 19:51:52.830 INFO kablam! usermod: no changes
Sep 19 19:51:52.982 INFO kablam!     Checking slog v1.7.1
Sep 19 19:51:52.983 INFO kablam!     Checking pulse v0.5.3
Sep 19 19:51:52.983 INFO kablam!     Checking threadpool v1.7.1
Sep 19 19:51:54.086 INFO kablam!     Checking specs v0.7.1
Sep 19 19:51:54.123 INFO kablam!     Checking slog-extra v0.1.2
Sep 19 19:51:54.766 INFO kablam!     Checking slog-stream v1.2.1
Sep 19 19:51:55.286 INFO kablam!     Checking slog-term v1.5.0
Sep 19 19:51:56.798 INFO kablam!     Checking specs_engine v0.0.3 (/source)
Sep 19 19:51:57.455 INFO kablam! warning: variable does not need to be mutable
Sep 19 19:51:57.455 INFO kablam!   --> src/machine.rs:39:17
Sep 19 19:51:57.455 INFO kablam!    |
Sep 19 19:51:57.455 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 19 19:51:57.455 INFO kablam!    |                 ----^^^^^
Sep 19 19:51:57.455 INFO kablam!    |                 |
Sep 19 19:51:57.456 INFO kablam!    |                 help: remove this `mut`
Sep 19 19:51:57.456 INFO kablam!    |
Sep 19 19:51:57.456 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 19 19:51:57.456 INFO kablam! 
Sep 19 19:51:57.459 INFO kablam! warning: variable does not need to be mutable
Sep 19 19:51:57.459 INFO kablam!   --> src/machine.rs:73:30
Sep 19 19:51:57.459 INFO kablam!    |
Sep 19 19:51:57.459 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 19 19:51:57.460 INFO kablam!    |                              ----^^^^^
Sep 19 19:51:57.460 INFO kablam!    |                              |
Sep 19 19:51:57.460 INFO kablam!    |                              help: remove this `mut`
Sep 19 19:51:57.460 INFO kablam! 
Sep 19 19:51:57.535 INFO kablam! warning: variable does not need to be mutable
Sep 19 19:51:57.535 INFO kablam!   --> src/machine.rs:39:17
Sep 19 19:51:57.535 INFO kablam!    |
Sep 19 19:51:57.535 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 19 19:51:57.535 INFO kablam!    |                 ----^^^^^
Sep 19 19:51:57.535 INFO kablam!    |                 |
Sep 19 19:51:57.535 INFO kablam!    |                 help: remove this `mut`
Sep 19 19:51:57.535 INFO kablam!    |
Sep 19 19:51:57.536 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 19 19:51:57.536 INFO kablam! 
Sep 19 19:51:57.537 INFO kablam! warning: variable does not need to be mutable
Sep 19 19:51:57.537 INFO kablam!   --> src/machine.rs:73:30
Sep 19 19:51:57.537 INFO kablam!    |
Sep 19 19:51:57.537 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 19 19:51:57.537 INFO kablam!    |                              ----^^^^^
Sep 19 19:51:57.537 INFO kablam!    |                              |
Sep 19 19:51:57.537 INFO kablam!    |                              help: remove this `mut`
Sep 19 19:51:57.537 INFO kablam! 
Sep 19 19:51:57.893 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.04s
Sep 19 19:51:57.898 INFO kablam! su: No module specific data is present
Sep 19 19:51:58.312 INFO running `"docker" "rm" "-f" "f485ca76143a25f12a5ce6c21fa9344bbe22dbadf181633e8bd66c970afd6ca3"`
Sep 19 19:51:58.429 INFO blam! f485ca76143a25f12a5ce6c21fa9344bbe22dbadf181633e8bd66c970afd6ca3