Sep 01 10:03:58.631 INFO checking backoff-0.1.2 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Sep 01 10:03:58.631 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Sep 01 10:03:58.631 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-3/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 10:03:58.874 INFO blam! 579eceae9a1e29962db8695fe4c1108bca40f19bfc568eb353376166b2ed8366
Sep 01 10:03:58.876 INFO running `"docker" "start" "-a" "579eceae9a1e29962db8695fe4c1108bca40f19bfc568eb353376166b2ed8366"`
Sep 01 10:03:59.957 INFO kablam!     Checking backoff v0.1.2 (file:///source)
Sep 01 10:04:01.393 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 01 10:04:01.393 INFO kablam!   --> examples/permanent_error.rs:10:9
Sep 01 10:04:01.393 INFO kablam!    |
Sep 01 10:04:01.393 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Sep 01 10:04:01.393 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 01 10:04:01.398 INFO kablam!    |
Sep 01 10:04:01.399 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 01 10:04:01.399 INFO kablam! 
Sep 01 10:04:07.286 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 7.55s
Sep 01 10:04:07.298 INFO kablam! su: No module specific data is present
Sep 01 10:04:07.824 INFO running `"docker" "rm" "-f" "579eceae9a1e29962db8695fe4c1108bca40f19bfc568eb353376166b2ed8366"`
Sep 01 10:04:07.933 INFO blam! 579eceae9a1e29962db8695fe4c1108bca40f19bfc568eb353376166b2ed8366