Nov 04 20:12:24.278 INFO checking optional_struct-0.2.0 against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 04 20:12:24.278 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-6/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/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 +2ad8c7b3502616aff142a4640cce911c6c2c5463-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 04 20:12:24.571 INFO blam! b2a4bd9ddcccca5fa5900bba625ac4332bc39eefe84448483a8cbb0be76e4942
Nov 04 20:12:24.578 INFO running `"docker" "start" "-a" "b2a4bd9ddcccca5fa5900bba625ac4332bc39eefe84448483a8cbb0be76e4942"`
Nov 04 20:12:25.274 INFO kablam! usermod: no changes
Nov 04 20:12:25.336 INFO kablam!    Compiling optional_struct v0.2.0 (/source)
Nov 04 20:12:31.439 INFO kablam! warning: struct is never constructed: `Config`
Nov 04 20:12:31.439 INFO kablam!  --> tests/empty.rs:5:1
Nov 04 20:12:31.439 INFO kablam!   |
Nov 04 20:12:31.439 INFO kablam! 5 | struct Config {
Nov 04 20:12:31.439 INFO kablam!   | ^^^^^^^^^^^^^
Nov 04 20:12:31.439 INFO kablam!   |
Nov 04 20:12:31.439 INFO kablam!   = note: #[warn(dead_code)] on by default
Nov 04 20:12:31.439 INFO kablam! 
Nov 04 20:12:31.521 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.22s
Nov 04 20:12:31.527 INFO kablam! su: No module specific data is present
Nov 04 20:12:31.887 INFO running `"docker" "rm" "-f" "b2a4bd9ddcccca5fa5900bba625ac4332bc39eefe84448483a8cbb0be76e4942"`
Nov 04 20:12:32.195 INFO blam! b2a4bd9ddcccca5fa5900bba625ac4332bc39eefe84448483a8cbb0be76e4942