Aug 30 08:38:57.401 INFO checking peggler-0.1.0 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 08:38:57.401 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 08:38:57.401 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-2/try#2d477f9981361618ac78253c28051a66b6cea125:/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 +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 08:38:57.594 INFO blam! 897d4f43f1a5b5d34c279354d9f71ca3cdab1bca5508f29c9295dcbe5d49685b
Aug 30 08:38:57.596 INFO running `"docker" "start" "-a" "897d4f43f1a5b5d34c279354d9f71ca3cdab1bca5508f29c9295dcbe5d49685b"`
Aug 30 08:38:58.210 INFO kablam!     Checking peggler v0.1.0 (file:///source)
Aug 30 08:39:00.270 INFO kablam! warning: variable does not need to be mutable
Aug 30 08:39:00.271 INFO kablam!  --> tests/arithmetic.rs:9:9
Aug 30 08:39:00.271 INFO kablam!   |
Aug 30 08:39:00.271 INFO kablam! 9 |     let mut end : usize;
Aug 30 08:39:00.271 INFO kablam!   |         ----^^^
Aug 30 08:39:00.271 INFO kablam!   |         |
Aug 30 08:39:00.271 INFO kablam!   |         help: remove this `mut`
Aug 30 08:39:00.271 INFO kablam!   |
Aug 30 08:39:00.271 INFO kablam!   = note: #[warn(unused_mut)] on by default
Aug 30 08:39:00.271 INFO kablam! 
Aug 30 08:39:02.111 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.92s
Aug 30 08:39:02.115 INFO kablam! su: No module specific data is present
Aug 30 08:39:02.684 INFO running `"docker" "rm" "-f" "897d4f43f1a5b5d34c279354d9f71ca3cdab1bca5508f29c9295dcbe5d49685b"`
Aug 30 08:39:02.862 INFO blam! 897d4f43f1a5b5d34c279354d9f71ca3cdab1bca5508f29c9295dcbe5d49685b