Sep 10 10:02:59.503 INFO checking serde_yaml-0.7.5 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 10:02:59.503 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 10:02:59.503 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-7/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 10:02:59.697 INFO blam! ad7310ce5540f8c4f4cf4afe881c8aa68771ca51376e23c403bece547b1d02cb
Sep 10 10:02:59.699 INFO running `"docker" "start" "-a" "ad7310ce5540f8c4f4cf4afe881c8aa68771ca51376e23c403bece547b1d02cb"`
Sep 10 10:03:00.947 INFO kablam! usermod: no changes
Sep 10 10:03:01.037 INFO kablam!     Checking unicode-xid v0.0.4
Sep 10 10:03:01.038 INFO kablam!     Checking unindent v0.1.3
Sep 10 10:03:01.038 INFO kablam!     Checking pulldown-cmark v0.1.2
Sep 10 10:03:01.038 INFO kablam!     Checking serde_yaml v0.7.5 (file:///source)
Sep 10 10:03:01.450 INFO kablam!     Checking synom v0.11.3
Sep 10 10:03:01.897 INFO kablam!     Checking syn v0.11.11
Sep 10 10:03:05.959 INFO kablam!     Checking version-sync v0.5.0
Sep 10 10:03:08.934 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 7.97s
Sep 10 10:03:08.936 INFO kablam! su: No module specific data is present
Sep 10 10:03:09.552 INFO running `"docker" "rm" "-f" "ad7310ce5540f8c4f4cf4afe881c8aa68771ca51376e23c403bece547b1d02cb"`
Sep 10 10:03:09.641 INFO blam! ad7310ce5540f8c4f4cf4afe881c8aa68771ca51376e23c403bece547b1d02cb