Sep 06 02:55:26.296 INFO checking optional_struct-0.2.0 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 06 02:55:26.296 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 06 02:55:26.296 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-2/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/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 +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 02:55:26.423 INFO blam! 02a0e622feafb9ae04f71221f8d9f30d582ef8b399d682ddd8cf1884f92cbf86
Sep 06 02:55:26.424 INFO running `"docker" "start" "-a" "02a0e622feafb9ae04f71221f8d9f30d582ef8b399d682ddd8cf1884f92cbf86"`
Sep 06 02:55:27.382 INFO kablam! usermod: no changes
Sep 06 02:55:27.425 INFO kablam!    Compiling optional_struct v0.2.0 (file:///source)
Sep 06 02:55:30.292 INFO kablam! warning: struct is never constructed: `Config`
Sep 06 02:55:30.292 INFO kablam!  --> tests/empty.rs:5:1
Sep 06 02:55:30.292 INFO kablam!   |
Sep 06 02:55:30.292 INFO kablam! 5 | struct Config {
Sep 06 02:55:30.292 INFO kablam!   | ^^^^^^^^^^^^^
Sep 06 02:55:30.292 INFO kablam!   |
Sep 06 02:55:30.292 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 06 02:55:30.292 INFO kablam! 
Sep 06 02:55:30.408 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.01s
Sep 06 02:55:30.411 INFO kablam! su: No module specific data is present
Sep 06 02:55:31.030 INFO running `"docker" "rm" "-f" "02a0e622feafb9ae04f71221f8d9f30d582ef8b399d682ddd8cf1884f92cbf86"`
Sep 06 02:55:31.092 INFO blam! 02a0e622feafb9ae04f71221f8d9f30d582ef8b399d682ddd8cf1884f92cbf86