Aug 30 08:40:51.271 INFO checking pdf-0.5.2 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 08:40:51.271 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 08:40:51.271 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-1/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 08:40:51.514 INFO blam! f4278c41ef5fcf7e5b2e939ebf4db9a9a6834f82d9545887aa533fd9b0553550
Aug 30 08:40:51.517 INFO running `"docker" "start" "-a" "f4278c41ef5fcf7e5b2e939ebf4db9a9a6834f82d9545887aa533fd9b0553550"`
Aug 30 08:40:52.473 INFO kablam!    Compiling pdf v0.5.2 (file:///source)
Aug 30 08:40:53.085 INFO kablam! warning: variable does not need to be mutable
Aug 30 08:40:53.085 INFO kablam!   --> src/build_metrics.rs:37:9
Aug 30 08:40:53.085 INFO kablam!    |
Aug 30 08:40:53.085 INFO kablam! 37 |     let mut f = &mut File::create(&dst).unwrap();
Aug 30 08:40:53.085 INFO kablam!    |         ----^
Aug 30 08:40:53.085 INFO kablam!    |         |
Aug 30 08:40:53.085 INFO kablam!    |         help: remove this `mut`
Aug 30 08:40:53.086 INFO kablam!    |
Aug 30 08:40:53.086 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 08:40:53.086 INFO kablam! 
Aug 30 08:40:57.523 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.08s
Aug 30 08:40:57.528 INFO kablam! su: No module specific data is present
Aug 30 08:40:57.994 INFO running `"docker" "rm" "-f" "f4278c41ef5fcf7e5b2e939ebf4db9a9a6834f82d9545887aa533fd9b0553550"`
Aug 30 08:40:58.100 INFO blam! f4278c41ef5fcf7e5b2e939ebf4db9a9a6834f82d9545887aa533fd9b0553550