Sep 02 05:07:20.264 INFO checking pdf-0.5.2 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 02 05:07:20.264 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 02 05:07:20.265 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-1/try#952c7dbfa2628309f557b367929ffc17af20b332:/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 +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 05:07:20.428 INFO blam! 82df9dd1f84512e7b5e26077b61d180e15535b60c69f675df616a523e4d92e72
Sep 02 05:07:20.430 INFO running `"docker" "start" "-a" "82df9dd1f84512e7b5e26077b61d180e15535b60c69f675df616a523e4d92e72"`
Sep 02 05:07:21.067 INFO kablam!    Compiling pdf v0.5.2 (file:///source)
Sep 02 05:07:21.767 INFO kablam! warning: variable does not need to be mutable
Sep 02 05:07:21.767 INFO kablam!   --> src/build_metrics.rs:37:9
Sep 02 05:07:21.767 INFO kablam!    |
Sep 02 05:07:21.767 INFO kablam! 37 |     let mut f = &mut File::create(&dst).unwrap();
Sep 02 05:07:21.767 INFO kablam!    |         ----^
Sep 02 05:07:21.767 INFO kablam!    |         |
Sep 02 05:07:21.767 INFO kablam!    |         help: remove this `mut`
Sep 02 05:07:21.767 INFO kablam!    |
Sep 02 05:07:21.767 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 02 05:07:21.767 INFO kablam! 
Sep 02 05:07:28.013 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.98s
Sep 02 05:07:28.018 INFO kablam! su: No module specific data is present
Sep 02 05:07:28.370 INFO running `"docker" "rm" "-f" "82df9dd1f84512e7b5e26077b61d180e15535b60c69f675df616a523e4d92e72"`
Sep 02 05:07:28.478 INFO blam! 82df9dd1f84512e7b5e26077b61d180e15535b60c69f675df616a523e4d92e72