Sep 14 12:13:30.619 INFO checking optional_struct-0.2.0 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 12:13:30.619 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 12:13:30.619 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-2/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/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 +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 12:13:30.764 INFO blam! a572d3d4437a723c06af98f8a277a5e1dd8dc815269aab8b55004842a37fbbb3
Sep 14 12:13:30.765 INFO running `"docker" "start" "-a" "a572d3d4437a723c06af98f8a277a5e1dd8dc815269aab8b55004842a37fbbb3"`
Sep 14 12:13:31.580 INFO kablam! usermod: no changes
Sep 14 12:13:31.639 INFO kablam!    Compiling optional_struct v0.2.0 (file:///source)
Sep 14 12:13:34.898 INFO kablam! warning: struct is never constructed: `Config`
Sep 14 12:13:34.898 INFO kablam!  --> tests/empty.rs:5:1
Sep 14 12:13:34.898 INFO kablam!   |
Sep 14 12:13:34.898 INFO kablam! 5 | struct Config {
Sep 14 12:13:34.898 INFO kablam!   | ^^^^^^^^^^^^^
Sep 14 12:13:34.898 INFO kablam!   |
Sep 14 12:13:34.898 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 14 12:13:34.898 INFO kablam! 
Sep 14 12:13:34.972 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
Sep 14 12:13:34.975 INFO kablam! su: No module specific data is present
Sep 14 12:13:35.676 INFO running `"docker" "rm" "-f" "a572d3d4437a723c06af98f8a277a5e1dd8dc815269aab8b55004842a37fbbb3"`
Sep 14 12:13:35.753 INFO blam! a572d3d4437a723c06af98f8a277a5e1dd8dc815269aab8b55004842a37fbbb3