Sep 04 11:28:49.624 INFO checking peggler-0.1.0 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 11:28:49.624 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 11:28:49.624 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-3/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 11:28:49.882 INFO blam! f9b12e94058f0295fe18871758f98f219d8d25d6166694d3a319c64b5c0f0f4c
Sep 04 11:28:49.885 INFO running `"docker" "start" "-a" "f9b12e94058f0295fe18871758f98f219d8d25d6166694d3a319c64b5c0f0f4c"`
Sep 04 11:28:50.706 INFO kablam!     Checking peggler v0.1.0 (file:///source)
Sep 04 11:28:53.465 INFO kablam! warning: variable does not need to be mutable
Sep 04 11:28:53.465 INFO kablam!  --> tests/arithmetic.rs:9:9
Sep 04 11:28:53.465 INFO kablam!   |
Sep 04 11:28:53.465 INFO kablam! 9 |     let mut end : usize;
Sep 04 11:28:53.465 INFO kablam!   |         ----^^^
Sep 04 11:28:53.465 INFO kablam!   |         |
Sep 04 11:28:53.465 INFO kablam!   |         help: remove this `mut`
Sep 04 11:28:53.472 INFO kablam!   |
Sep 04 11:28:53.472 INFO kablam!   = note: #[warn(unused_mut)] on by default
Sep 04 11:28:53.472 INFO kablam! 
Sep 04 11:28:54.628 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.94s
Sep 04 11:28:54.631 INFO kablam! su: No module specific data is present
Sep 04 11:28:55.194 INFO running `"docker" "rm" "-f" "f9b12e94058f0295fe18871758f98f219d8d25d6166694d3a319c64b5c0f0f4c"`
Sep 04 11:28:55.285 INFO blam! f9b12e94058f0295fe18871758f98f219d8d25d6166694d3a319c64b5c0f0f4c