Sep 14 17:33:50.505 INFO checking difference-2.0.0 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 17:33:50.505 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 17:33:50.505 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 17:33:51.293 INFO blam! 84e19d80557257cee650eff9352795880d4d27f7f1a05edda655a8dae207cbb5
Sep 14 17:33:51.295 INFO running `"docker" "start" "-a" "84e19d80557257cee650eff9352795880d4d27f7f1a05edda655a8dae207cbb5"`
Sep 14 17:33:52.351 INFO kablam! usermod: no changes
Sep 14 17:33:52.523 INFO kablam!     Checking difference v2.0.0 (file:///source)
Sep 14 17:33:53.555 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 14 17:33:53.555 INFO kablam!    --> tests/quickcheck.rs:103:9
Sep 14 17:33:53.555 INFO kablam!     |
Sep 14 17:33:53.555 INFO kablam! 103 | #[allow(needless_pass_by_value)]
Sep 14 17:33:53.555 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 14 17:33:53.555 INFO kablam!     |
Sep 14 17:33:53.555 INFO kablam!     = note: #[warn(unknown_lints)] on by default
Sep 14 17:33:53.555 INFO kablam! 
Sep 14 17:33:55.808 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.42s
Sep 14 17:33:55.819 INFO kablam! su: No module specific data is present
Sep 14 17:33:57.554 INFO running `"docker" "rm" "-f" "84e19d80557257cee650eff9352795880d4d27f7f1a05edda655a8dae207cbb5"`
Sep 14 17:33:57.911 INFO blam! 84e19d80557257cee650eff9352795880d4d27f7f1a05edda655a8dae207cbb5