Sep 10 11:23:26.232 INFO checking robin-derives-0.3.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 11:23:26.232 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 11:23:26.232 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 11:23:26.459 INFO blam! fdc5d3baf2924781782fe58611ab4a20d45368fe890dbe7d4849a4a821efd57a
Sep 10 11:23:26.461 INFO running `"docker" "start" "-a" "fdc5d3baf2924781782fe58611ab4a20d45368fe890dbe7d4849a4a821efd57a"`
Sep 10 11:23:27.167 INFO kablam! usermod: no changes
Sep 10 11:23:27.216 INFO kablam!     Checking robin-derives v0.3.0 (file:///source)
Sep 10 11:23:28.352 INFO kablam! warning: function is never used: `underscore`
Sep 10 11:23:28.352 INFO kablam!    --> src/jobs.rs:111:1
Sep 10 11:23:28.352 INFO kablam!     |
Sep 10 11:23:28.352 INFO kablam! 111 | fn underscore(s: &str) -> String {
Sep 10 11:23:28.352 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 11:23:28.352 INFO kablam!     |
Sep 10 11:23:28.352 INFO kablam!     = note: #[warn(dead_code)] on by default
Sep 10 11:23:28.352 INFO kablam! 
Sep 10 11:23:28.494 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
Sep 10 11:23:28.497 INFO kablam! su: No module specific data is present
Sep 10 11:23:29.111 INFO running `"docker" "rm" "-f" "fdc5d3baf2924781782fe58611ab4a20d45368fe890dbe7d4849a4a821efd57a"`
Sep 10 11:23:29.188 INFO blam! fdc5d3baf2924781782fe58611ab4a20d45368fe890dbe7d4849a4a821efd57a