Sep 18 03:26:34.904 INFO checking backoff-0.1.2 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 18 03:26:34.904 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 18 03:26:34.904 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-1/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 18 03:26:35.100 INFO blam! 9b126858798aefd4baa4c6613d8d093f9dd64f4d0ba778e133cef5fec9f7d83e
Sep 18 03:26:35.102 INFO running `"docker" "start" "-a" "9b126858798aefd4baa4c6613d8d093f9dd64f4d0ba778e133cef5fec9f7d83e"`
Sep 18 03:26:36.058 INFO kablam! usermod: no changes
Sep 18 03:26:36.279 INFO kablam!     Checking backoff v0.1.2 (/source)
Sep 18 03:26:37.090 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 18 03:26:37.090 INFO kablam!   --> examples/permanent_error.rs:10:9
Sep 18 03:26:37.091 INFO kablam!    |
Sep 18 03:26:37.091 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Sep 18 03:26:37.091 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 18 03:26:37.091 INFO kablam!    |
Sep 18 03:26:37.091 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 18 03:26:37.091 INFO kablam! 
Sep 18 03:26:40.111 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
Sep 18 03:26:40.119 INFO kablam! su: No module specific data is present
Sep 18 03:26:41.374 INFO running `"docker" "rm" "-f" "9b126858798aefd4baa4c6613d8d093f9dd64f4d0ba778e133cef5fec9f7d83e"`
Sep 18 03:26:41.671 INFO blam! 9b126858798aefd4baa4c6613d8d093f9dd64f4d0ba778e133cef5fec9f7d83e