Aug 18 03:13:37.911 INFO checking backoff-0.1.2 against master#142bb27373126edf8367f526358b6c72ecf1d8df for pr-53426
Aug 18 03:13:37.911 INFO running: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 18 03:13:37.911 INFO creating container for: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 18 03:13:37.911 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53426/master#142bb27373126edf8367f526358b6c72ecf1d8df:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53426/worker-2/master#142bb27373126edf8367f526358b6c72ecf1d8df:/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 +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 18 03:13:38.146 INFO blam! f1bf4bf759bd90987599329c4565da2ce21072cab60e2482d6f28efdcba8f463
Aug 18 03:13:38.149 INFO running `"docker" "start" "-a" "f1bf4bf759bd90987599329c4565da2ce21072cab60e2482d6f28efdcba8f463"`
Aug 18 03:13:39.304 INFO kablam!     Checking backoff v0.1.2 (file:///source)
Aug 18 03:13:40.985 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Aug 18 03:13:40.985 INFO kablam!   --> examples/permanent_error.rs:10:9
Aug 18 03:13:40.985 INFO kablam!    |
Aug 18 03:13:40.985 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Aug 18 03:13:40.985 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Aug 18 03:13:40.994 INFO kablam!    |
Aug 18 03:13:40.994 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Aug 18 03:13:40.995 INFO kablam! 
Aug 18 03:13:47.438 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.39s
Aug 18 03:13:47.474 INFO kablam! su: No module specific data is present
Aug 18 03:13:47.986 INFO running `"docker" "rm" "-f" "f1bf4bf759bd90987599329c4565da2ce21072cab60e2482d6f28efdcba8f463"`
Aug 18 03:13:48.180 INFO blam! f1bf4bf759bd90987599329c4565da2ce21072cab60e2482d6f28efdcba8f463