Sep 21 05:51:01.243 INFO checking peggler-0.1.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 05:51:01.243 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 05:51:01.243 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-5/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 05:51:01.382 INFO blam! ea56176100c119d14143f7b87ccce942d9d3aa339ea97bc1787a1515665fda37
Sep 21 05:51:01.385 INFO running `"docker" "start" "-a" "ea56176100c119d14143f7b87ccce942d9d3aa339ea97bc1787a1515665fda37"`
Sep 21 05:51:02.324 INFO kablam! usermod: no changes
Sep 21 05:51:02.410 INFO kablam!     Checking peggler v0.1.0 (/source)
Sep 21 05:51:04.575 INFO kablam! warning: variable does not need to be mutable
Sep 21 05:51:04.575 INFO kablam!  --> tests/arithmetic.rs:9:9
Sep 21 05:51:04.575 INFO kablam!   |
Sep 21 05:51:04.575 INFO kablam! 9 |     let mut end : usize;
Sep 21 05:51:04.575 INFO kablam!   |         ----^^^
Sep 21 05:51:04.575 INFO kablam!   |         |
Sep 21 05:51:04.575 INFO kablam!   |         help: remove this `mut`
Sep 21 05:51:04.575 INFO kablam!   |
Sep 21 05:51:04.575 INFO kablam!   = note: #[warn(unused_mut)] on by default
Sep 21 05:51:04.575 INFO kablam! 
Sep 21 05:51:05.562 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.20s
Sep 21 05:51:05.570 INFO kablam! su: No module specific data is present
Sep 21 05:51:06.234 INFO running `"docker" "rm" "-f" "ea56176100c119d14143f7b87ccce942d9d3aa339ea97bc1787a1515665fda37"`
Sep 21 05:51:06.348 INFO blam! ea56176100c119d14143f7b87ccce942d9d3aa339ea97bc1787a1515665fda37