Sep 21 11:21:39.319 INFO checking difference-2.0.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 11:21:39.319 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 11:21:39.319 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-3/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 11:21:39.550 INFO blam! 00499d97a2a45b1958b82b3954296983f0236a2cd2a74c69e096a360fa6d335e
Sep 21 11:21:39.553 INFO running `"docker" "start" "-a" "00499d97a2a45b1958b82b3954296983f0236a2cd2a74c69e096a360fa6d335e"`
Sep 21 11:21:41.078 INFO kablam! usermod: no changes
Sep 21 11:21:41.210 INFO kablam!     Checking difference v2.0.0 (/source)
Sep 21 11:21:42.171 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 21 11:21:42.171 INFO kablam!    --> tests/quickcheck.rs:103:9
Sep 21 11:21:42.171 INFO kablam!     |
Sep 21 11:21:42.171 INFO kablam! 103 | #[allow(needless_pass_by_value)]
Sep 21 11:21:42.171 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 21 11:21:42.171 INFO kablam!     |
Sep 21 11:21:42.171 INFO kablam!     = note: #[warn(unknown_lints)] on by default
Sep 21 11:21:42.171 INFO kablam! 
Sep 21 11:21:44.274 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.17s
Sep 21 11:21:44.282 INFO kablam! su: No module specific data is present
Sep 21 11:21:45.271 INFO running `"docker" "rm" "-f" "00499d97a2a45b1958b82b3954296983f0236a2cd2a74c69e096a360fa6d335e"`
Sep 21 11:21:45.399 INFO blam! 00499d97a2a45b1958b82b3954296983f0236a2cd2a74c69e096a360fa6d335e