Sep 01 06:20:43.322 INFO checking difference-2.0.0 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Sep 01 06:20:43.322 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Sep 01 06:20:43.322 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-3/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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 +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 06:20:43.558 INFO blam! 2927def6cfae74f17ff760e570b59ddc4492ef64afd96ad8ed4f162cbfa2d009
Sep 01 06:20:43.560 INFO running `"docker" "start" "-a" "2927def6cfae74f17ff760e570b59ddc4492ef64afd96ad8ed4f162cbfa2d009"`
Sep 01 06:20:44.365 INFO kablam!     Checking difference v2.0.0 (file:///source)
Sep 01 06:20:45.400 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 01 06:20:45.400 INFO kablam!    --> tests/quickcheck.rs:103:9
Sep 01 06:20:45.400 INFO kablam!     |
Sep 01 06:20:45.400 INFO kablam! 103 | #[allow(needless_pass_by_value)]
Sep 01 06:20:45.400 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 01 06:20:45.401 INFO kablam!     |
Sep 01 06:20:45.402 INFO kablam!     = note: #[warn(unknown_lints)] on by default
Sep 01 06:20:45.402 INFO kablam! 
Sep 01 06:20:47.955 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.66s
Sep 01 06:20:47.959 INFO kablam! su: No module specific data is present
Sep 01 06:20:48.324 INFO running `"docker" "rm" "-f" "2927def6cfae74f17ff760e570b59ddc4492ef64afd96ad8ed4f162cbfa2d009"`
Sep 01 06:20:48.439 INFO blam! 2927def6cfae74f17ff760e570b59ddc4492ef64afd96ad8ed4f162cbfa2d009