Sep 01 11:39:33.094 INFO checking peggler-0.1.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 11:39:33.095 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 11:39:33.095 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 11:39:33.407 INFO blam! b7887e505b5a9446d6a841a9bf6bed73f592101f560e8c2a965424673f40bc0d
Sep 01 11:39:33.410 INFO running `"docker" "start" "-a" "b7887e505b5a9446d6a841a9bf6bed73f592101f560e8c2a965424673f40bc0d"`
Sep 01 11:39:34.239 INFO kablam!     Checking peggler v0.1.0 (file:///source)
Sep 01 11:39:35.945 INFO kablam! warning: variable does not need to be mutable
Sep 01 11:39:35.945 INFO kablam!  --> tests/arithmetic.rs:9:9
Sep 01 11:39:35.945 INFO kablam!   |
Sep 01 11:39:35.945 INFO kablam! 9 |     let mut end : usize;
Sep 01 11:39:35.945 INFO kablam!   |         ----^^^
Sep 01 11:39:35.945 INFO kablam!   |         |
Sep 01 11:39:35.945 INFO kablam!   |         help: remove this `mut`
Sep 01 11:39:35.945 INFO kablam!   |
Sep 01 11:39:35.945 INFO kablam!   = note: #[warn(unused_mut)] on by default
Sep 01 11:39:35.945 INFO kablam! 
Sep 01 11:39:36.780 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
Sep 01 11:39:36.786 INFO kablam! su: No module specific data is present
Sep 01 11:39:37.249 INFO running `"docker" "rm" "-f" "b7887e505b5a9446d6a841a9bf6bed73f592101f560e8c2a965424673f40bc0d"`
Sep 01 11:39:37.357 INFO blam! b7887e505b5a9446d6a841a9bf6bed73f592101f560e8c2a965424673f40bc0d