Nov 07 11:22:16.728 INFO checking optional_struct-0.2.0 against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 07 11:22:16.728 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-7/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +24e66c28980442a48d9458f1a4f9b76cc722dc8a-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 07 11:22:16.892 INFO blam! 3c5763cabc27f2ccabbe41d4da14093cfa3f9cbed11fa483a8d876abfb41f673
Nov 07 11:22:16.898 INFO running `"docker" "start" "-a" "3c5763cabc27f2ccabbe41d4da14093cfa3f9cbed11fa483a8d876abfb41f673"`
Nov 07 11:22:17.454 INFO kablam! usermod: no changes
Nov 07 11:22:17.507 INFO kablam!    Compiling optional_struct v0.2.0 (/source)
Nov 07 11:22:25.584 INFO kablam! warning: struct is never constructed: `Config`
Nov 07 11:22:25.584 INFO kablam!  --> tests/empty.rs:5:1
Nov 07 11:22:25.584 INFO kablam!   |
Nov 07 11:22:25.584 INFO kablam! 5 | struct Config {
Nov 07 11:22:25.584 INFO kablam!   | ^^^^^^^^^^^^^
Nov 07 11:22:25.584 INFO kablam!   |
Nov 07 11:22:25.584 INFO kablam!   = note: #[warn(dead_code)] on by default
Nov 07 11:22:25.584 INFO kablam! 
Nov 07 11:22:25.893 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 8.42s
Nov 07 11:22:25.908 INFO kablam! su: No module specific data is present
Nov 07 11:22:26.687 INFO running `"docker" "rm" "-f" "3c5763cabc27f2ccabbe41d4da14093cfa3f9cbed11fa483a8d876abfb41f673"`
Nov 07 11:22:27.025 INFO blam! 3c5763cabc27f2ccabbe41d4da14093cfa3f9cbed11fa483a8d876abfb41f673