Sep 10 18:53:48.901 INFO checking from_variants-0.3.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 18:53:48.901 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 18:53:48.902 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/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 18:53:49.160 INFO blam! c353764c73767561db36940ac0b1b4a9eebfe174e7032ed2be909040b3bd116e
Sep 10 18:53:49.162 INFO running `"docker" "start" "-a" "c353764c73767561db36940ac0b1b4a9eebfe174e7032ed2be909040b3bd116e"`
Sep 10 18:53:50.690 INFO kablam! usermod: no changes
Sep 10 18:53:50.802 INFO kablam!    Compiling ident_case v1.0.0
Sep 10 18:53:50.814 INFO kablam!    Compiling syn v0.13.11
Sep 10 18:54:11.827 INFO kablam!    Compiling darling_core v0.4.0
Sep 10 18:54:18.886 INFO kablam!    Compiling darling_macro v0.4.0
Sep 10 18:54:21.653 INFO kablam!    Compiling darling v0.4.0
Sep 10 18:54:22.866 INFO kablam!    Compiling from_variants_impl v0.3.0
Sep 10 18:54:25.926 INFO kablam!     Checking from_variants v0.3.0 (file:///source)
Sep 10 18:54:26.868 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 36.14s
Sep 10 18:54:26.871 INFO kablam! su: No module specific data is present
Sep 10 18:54:27.522 INFO running `"docker" "rm" "-f" "c353764c73767561db36940ac0b1b4a9eebfe174e7032ed2be909040b3bd116e"`
Sep 10 18:54:27.608 INFO blam! c353764c73767561db36940ac0b1b4a9eebfe174e7032ed2be909040b3bd116e