Sep 04 19:43:45.608 INFO checking difference-2.0.0 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 19:43:45.608 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 19:43:45.609 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-3/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 19:43:45.782 INFO blam! ae7417190d65038d75d2b1ff779524bc24223e319fec19eba4edd1020e9536b2
Sep 04 19:43:45.784 INFO running `"docker" "start" "-a" "ae7417190d65038d75d2b1ff779524bc24223e319fec19eba4edd1020e9536b2"`
Sep 04 19:43:46.425 INFO kablam!     Checking difference v2.0.0 (file:///source)
Sep 04 19:43:47.409 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 04 19:43:47.409 INFO kablam!    --> tests/quickcheck.rs:103:9
Sep 04 19:43:47.409 INFO kablam!     |
Sep 04 19:43:47.409 INFO kablam! 103 | #[allow(needless_pass_by_value)]
Sep 04 19:43:47.409 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 04 19:43:47.410 INFO kablam!     |
Sep 04 19:43:47.410 INFO kablam!     = note: #[warn(unknown_lints)] on by default
Sep 04 19:43:47.410 INFO kablam! 
Sep 04 19:43:50.042 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.66s
Sep 04 19:43:50.049 INFO kablam! su: No module specific data is present
Sep 04 19:43:50.462 INFO running `"docker" "rm" "-f" "ae7417190d65038d75d2b1ff779524bc24223e319fec19eba4edd1020e9536b2"`
Sep 04 19:43:50.597 INFO blam! ae7417190d65038d75d2b1ff779524bc24223e319fec19eba4edd1020e9536b2