Sep 01 23:11:34.022 INFO checking specs_engine-0.0.3 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 01 23:11:34.022 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 01 23:11:34.022 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-1/try#952c7dbfa2628309f557b367929ffc17af20b332:/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 +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 23:11:34.205 INFO blam! 86aa2f13607b60f0a264a8eccd0b89a501827cb5b8dbbbf163189383411dd1b4
Sep 01 23:11:34.207 INFO running `"docker" "start" "-a" "86aa2f13607b60f0a264a8eccd0b89a501827cb5b8dbbbf163189383411dd1b4"`
Sep 01 23:11:34.943 INFO kablam!     Checking slog v1.7.1
Sep 01 23:11:34.945 INFO kablam!     Checking specs v0.7.1
Sep 01 23:11:35.951 INFO kablam!     Checking slog-extra v0.1.2
Sep 01 23:11:36.445 INFO kablam!     Checking slog-stream v1.2.1
Sep 01 23:11:36.912 INFO kablam!     Checking slog-term v1.5.0
Sep 01 23:11:38.616 INFO kablam!     Checking specs_engine v0.0.3 (file:///source)
Sep 01 23:11:39.554 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:39.554 INFO kablam!   --> src/machine.rs:39:17
Sep 01 23:11:39.554 INFO kablam!    |
Sep 01 23:11:39.554 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 01 23:11:39.554 INFO kablam!    |                 ----^^^^^
Sep 01 23:11:39.554 INFO kablam!    |                 |
Sep 01 23:11:39.554 INFO kablam!    |                 help: remove this `mut`
Sep 01 23:11:39.554 INFO kablam!    |
Sep 01 23:11:39.554 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 23:11:39.554 INFO kablam! 
Sep 01 23:11:39.559 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:39.559 INFO kablam!   --> src/machine.rs:73:30
Sep 01 23:11:39.559 INFO kablam!    |
Sep 01 23:11:39.559 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 01 23:11:39.559 INFO kablam!    |                              ----^^^^^
Sep 01 23:11:39.559 INFO kablam!    |                              |
Sep 01 23:11:39.559 INFO kablam!    |                              help: remove this `mut`
Sep 01 23:11:39.559 INFO kablam! 
Sep 01 23:11:40.220 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:40.220 INFO kablam!   --> src/machine.rs:39:17
Sep 01 23:11:40.220 INFO kablam!    |
Sep 01 23:11:40.220 INFO kablam! 39 |             let mut state = self._stack.last_mut().expect("Called long update without a state in the stack!");
Sep 01 23:11:40.220 INFO kablam!    |                 ----^^^^^
Sep 01 23:11:40.220 INFO kablam!    |                 |
Sep 01 23:11:40.220 INFO kablam!    |                 help: remove this `mut`
Sep 01 23:11:40.220 INFO kablam!    |
Sep 01 23:11:40.220 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 01 23:11:40.220 INFO kablam! 
Sep 01 23:11:40.225 INFO kablam! warning: variable does not need to be mutable
Sep 01 23:11:40.225 INFO kablam!   --> src/machine.rs:73:30
Sep 01 23:11:40.225 INFO kablam!    |
Sep 01 23:11:40.225 INFO kablam! 73 |                  if let Some(mut state) = self._stack.last_mut() {
Sep 01 23:11:40.225 INFO kablam!    |                              ----^^^^^
Sep 01 23:11:40.225 INFO kablam!    |                              |
Sep 01 23:11:40.225 INFO kablam!    |                              help: remove this `mut`
Sep 01 23:11:40.226 INFO kablam! 
Sep 01 23:11:40.585 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.68s
Sep 01 23:11:40.591 INFO kablam! su: No module specific data is present
Sep 01 23:11:40.972 INFO running `"docker" "rm" "-f" "86aa2f13607b60f0a264a8eccd0b89a501827cb5b8dbbbf163189383411dd1b4"`
Sep 01 23:11:41.104 INFO blam! 86aa2f13607b60f0a264a8eccd0b89a501827cb5b8dbbbf163189383411dd1b4