Sep 21 04:31:18.848 INFO checking robin-derives-0.3.0 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 04:31:18.848 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 04:31:18.848 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 04:31:18.990 INFO blam! bc8de69bca73deb677d657cbbb962cfda7372dffeff684daa014a20a366015f2
Sep 21 04:31:19.001 INFO running `"docker" "start" "-a" "bc8de69bca73deb677d657cbbb962cfda7372dffeff684daa014a20a366015f2"`
Sep 21 04:31:19.698 INFO kablam! usermod: no changes
Sep 21 04:31:19.735 INFO kablam!     Checking robin-derives v0.3.0 (/source)
Sep 21 04:31:20.714 INFO kablam! warning: function is never used: `underscore`
Sep 21 04:31:20.714 INFO kablam!    --> src/jobs.rs:111:1
Sep 21 04:31:20.714 INFO kablam!     |
Sep 21 04:31:20.714 INFO kablam! 111 | fn underscore(s: &str) -> String {
Sep 21 04:31:20.714 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 04:31:20.714 INFO kablam!     |
Sep 21 04:31:20.714 INFO kablam!     = note: #[warn(dead_code)] on by default
Sep 21 04:31:20.714 INFO kablam! 
Sep 21 04:31:20.832 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Sep 21 04:31:20.838 INFO kablam! su: No module specific data is present
Sep 21 04:31:21.398 INFO running `"docker" "rm" "-f" "bc8de69bca73deb677d657cbbb962cfda7372dffeff684daa014a20a366015f2"`
Sep 21 04:31:21.500 INFO blam! bc8de69bca73deb677d657cbbb962cfda7372dffeff684daa014a20a366015f2