Sep 10 12:37:32.588 INFO checking prost-build-0.4.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 12:37:32.588 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 12:37:32.588 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-2/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 12:37:32.775 INFO blam! 21fbd220ea9dc82c3136513b14c561cfac203e475d821ee7ba83bae817fb994c
Sep 10 12:37:32.777 INFO running `"docker" "start" "-a" "21fbd220ea9dc82c3136513b14c561cfac203e475d821ee7ba83bae817fb994c"`
Sep 10 12:37:33.874 INFO kablam! usermod: no changes
Sep 10 12:37:33.937 INFO kablam!     Checking multimap v0.4.0
Sep 10 12:37:33.938 INFO kablam!     Checking prost v0.4.0
Sep 10 12:37:33.939 INFO kablam!    Compiling failure v0.1.2
Sep 10 12:37:34.833 INFO kablam!    Compiling which v2.0.0
Sep 10 12:37:34.833 INFO kablam!    Compiling prost-derive v0.4.0
Sep 10 12:37:36.423 INFO kablam!    Compiling prost-build v0.4.0 (file:///source)
Sep 10 12:37:45.236 INFO kablam!     Checking prost-types v0.4.0
Sep 10 12:37:50.628 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 16.74s
Sep 10 12:37:50.637 INFO kablam! su: No module specific data is present
Sep 10 12:37:51.400 INFO running `"docker" "rm" "-f" "21fbd220ea9dc82c3136513b14c561cfac203e475d821ee7ba83bae817fb994c"`
Sep 10 12:37:51.522 INFO blam! 21fbd220ea9dc82c3136513b14c561cfac203e475d821ee7ba83bae817fb994c