Sep 19 23:17:00.169 INFO checking optional_struct-0.2.0 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 23:17:00.169 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 23:17:00.169 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-0/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 23:17:00.303 INFO blam! 7bcc39c5ab2be95597a10f7d3a92d0d988ad059b4feff969963e66d702f55607
Sep 19 23:17:00.305 INFO running `"docker" "start" "-a" "7bcc39c5ab2be95597a10f7d3a92d0d988ad059b4feff969963e66d702f55607"`
Sep 19 23:17:01.001 INFO kablam! usermod: no changes
Sep 19 23:17:01.043 INFO kablam!    Compiling optional_struct v0.2.0 (/source)
Sep 19 23:17:04.266 INFO kablam! warning: struct is never constructed: `Config`
Sep 19 23:17:04.266 INFO kablam!  --> tests/empty.rs:5:1
Sep 19 23:17:04.266 INFO kablam!   |
Sep 19 23:17:04.266 INFO kablam! 5 | struct Config {
Sep 19 23:17:04.267 INFO kablam!   | ^^^^^^^^^^^^^
Sep 19 23:17:04.267 INFO kablam!   |
Sep 19 23:17:04.267 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 19 23:17:04.267 INFO kablam! 
Sep 19 23:17:04.360 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.34s
Sep 19 23:17:04.363 INFO kablam! su: No module specific data is present
Sep 19 23:17:05.032 INFO running `"docker" "rm" "-f" "7bcc39c5ab2be95597a10f7d3a92d0d988ad059b4feff969963e66d702f55607"`
Sep 19 23:17:05.113 INFO blam! 7bcc39c5ab2be95597a10f7d3a92d0d988ad059b4feff969963e66d702f55607