Sep 02 02:39:17.431 INFO checking backoff-0.1.2 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 02 02:39:17.431 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 02:39:17.431 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 02:39:17.692 INFO blam! ae060f6e950994638ffe5c928884da7c61b3f832da606a5a427373c768953778
Sep 02 02:39:17.695 INFO running `"docker" "start" "-a" "ae060f6e950994638ffe5c928884da7c61b3f832da606a5a427373c768953778"`
Sep 02 02:39:18.711 INFO kablam!     Checking backoff v0.1.2 (file:///source)
Sep 02 02:39:20.230 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 02 02:39:20.230 INFO kablam!   --> examples/permanent_error.rs:10:9
Sep 02 02:39:20.230 INFO kablam!    |
Sep 02 02:39:20.230 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Sep 02 02:39:20.230 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 02 02:39:20.230 INFO kablam!    |
Sep 02 02:39:20.230 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 02 02:39:20.230 INFO kablam! 
Sep 02 02:39:26.858 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.32s
Sep 02 02:39:26.886 INFO kablam! su: No module specific data is present
Sep 02 02:39:27.546 INFO running `"docker" "rm" "-f" "ae060f6e950994638ffe5c928884da7c61b3f832da606a5a427373c768953778"`
Sep 02 02:39:27.725 INFO blam! ae060f6e950994638ffe5c928884da7c61b3f832da606a5a427373c768953778