Sep 05 02:22:42.184 INFO checking backoff-0.1.2 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 05 02:22:42.184 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 05 02:22:42.184 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-1/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 05 02:22:42.464 INFO blam! 58927c10c26e2052d13a0587b01e29a481f7f12b59b496830bafb6d5547fe117
Sep 05 02:22:42.466 INFO running `"docker" "start" "-a" "58927c10c26e2052d13a0587b01e29a481f7f12b59b496830bafb6d5547fe117"`
Sep 05 02:22:43.542 INFO kablam!     Checking backoff v0.1.2 (file:///source)
Sep 05 02:22:45.310 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 05 02:22:45.311 INFO kablam!   --> examples/permanent_error.rs:10:9
Sep 05 02:22:45.311 INFO kablam!    |
Sep 05 02:22:45.311 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Sep 05 02:22:45.311 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 05 02:22:45.311 INFO kablam!    |
Sep 05 02:22:45.311 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 05 02:22:45.311 INFO kablam! 
Sep 05 02:22:52.050 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.71s
Sep 05 02:22:52.062 INFO kablam! su: No module specific data is present
Sep 05 02:22:52.778 INFO running `"docker" "rm" "-f" "58927c10c26e2052d13a0587b01e29a481f7f12b59b496830bafb6d5547fe117"`
Sep 05 02:22:52.945 INFO blam! 58927c10c26e2052d13a0587b01e29a481f7f12b59b496830bafb6d5547fe117