Sep 01 11:39:32.242 INFO checking peggler-0.1.0 against try#aa245a5862056b681d2ccdb178f58891108cd3a6 for pr-53831
Sep 01 11:39:32.242 INFO running: cargo +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets
Sep 01 11:39:32.242 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53831/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-2/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/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 +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 11:39:32.518 INFO blam! f62d32712cf0c7140f7c7118ee97627b2fe57c1a0eaa9556240b98c8d56eecdb
Sep 01 11:39:32.521 INFO running `"docker" "start" "-a" "f62d32712cf0c7140f7c7118ee97627b2fe57c1a0eaa9556240b98c8d56eecdb"`
Sep 01 11:39:33.726 INFO kablam!     Checking peggler v0.1.0 (file:///source)
Sep 01 11:39:35.196 INFO kablam! warning: variable does not need to be mutable
Sep 01 11:39:35.196 INFO kablam!  --> tests/arithmetic.rs:9:9
Sep 01 11:39:35.196 INFO kablam!   |
Sep 01 11:39:35.196 INFO kablam! 9 |     let mut end : usize;
Sep 01 11:39:35.196 INFO kablam!   |         ----^^^
Sep 01 11:39:35.196 INFO kablam!   |         |
Sep 01 11:39:35.196 INFO kablam!   |         help: remove this `mut`
Sep 01 11:39:35.196 INFO kablam!   |
Sep 01 11:39:35.196 INFO kablam!   = note: #[warn(unused_mut)] on by default
Sep 01 11:39:35.196 INFO kablam! 
Sep 01 11:39:36.337 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
Sep 01 11:39:36.340 INFO kablam! su: No module specific data is present
Sep 01 11:39:36.807 INFO running `"docker" "rm" "-f" "f62d32712cf0c7140f7c7118ee97627b2fe57c1a0eaa9556240b98c8d56eecdb"`
Sep 01 11:39:36.927 INFO blam! f62d32712cf0c7140f7c7118ee97627b2fe57c1a0eaa9556240b98c8d56eecdb