Sep 18 01:39:49.901 INFO checking difference-2.0.0 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 18 01:39:49.901 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 18 01:39:49.901 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-2/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 18 01:39:50.359 INFO blam! fc439600d70106c776a2759331327e7926747ed383f832703c1dbab827ebe2da
Sep 18 01:39:50.361 INFO running `"docker" "start" "-a" "fc439600d70106c776a2759331327e7926747ed383f832703c1dbab827ebe2da"`
Sep 18 01:39:52.967 INFO kablam! usermod: no changes
Sep 18 01:39:53.107 INFO kablam!     Checking difference v2.0.0 (/source)
Sep 18 01:39:54.239 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 18 01:39:54.239 INFO kablam!    --> tests/quickcheck.rs:103:9
Sep 18 01:39:54.239 INFO kablam!     |
Sep 18 01:39:54.239 INFO kablam! 103 | #[allow(needless_pass_by_value)]
Sep 18 01:39:54.239 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 18 01:39:54.251 INFO kablam!     |
Sep 18 01:39:54.251 INFO kablam!     = note: #[warn(unknown_lints)] on by default
Sep 18 01:39:54.251 INFO kablam! 
Sep 18 01:39:56.099 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.08s
Sep 18 01:39:56.105 INFO kablam! su: No module specific data is present
Sep 18 01:39:57.225 INFO running `"docker" "rm" "-f" "fc439600d70106c776a2759331327e7926747ed383f832703c1dbab827ebe2da"`
Sep 18 01:39:57.575 INFO blam! fc439600d70106c776a2759331327e7926747ed383f832703c1dbab827ebe2da