Sep 10 10:09:53.262 INFO checking selectors-0.20.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 10:09:53.262 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 10:09:53.262 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 10:09:53.419 INFO blam! 1ffa8ecf61518a520e1cca905b28757c245a2bcb9b863f5d183c35647178344e
Sep 10 10:09:53.421 INFO running `"docker" "start" "-a" "1ffa8ecf61518a520e1cca905b28757c245a2bcb9b863f5d183c35647178344e"`
Sep 10 10:09:54.295 INFO kablam! usermod: no changes
Sep 10 10:09:54.390 INFO kablam!    Compiling procedural-masquerade v0.1.6
Sep 10 10:09:54.403 INFO kablam!     Checking thin-slice v0.1.1
Sep 10 10:09:54.403 INFO kablam!     Checking dtoa-short v0.3.2
Sep 10 10:09:54.404 INFO kablam!     Checking servo_arc v0.1.1
Sep 10 10:09:54.406 INFO kablam!    Compiling syn v0.14.9
Sep 10 10:09:54.406 INFO kablam!    Compiling selectors v0.20.0 (file:///source)
Sep 10 10:10:12.581 INFO kablam!    Compiling cssparser v0.24.0
Sep 10 10:10:12.581 INFO kablam!    Compiling cssparser-macros v0.3.4
Sep 10 10:10:29.037 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 34.72s
Sep 10 10:10:29.044 INFO kablam! su: No module specific data is present
Sep 10 10:10:29.552 INFO running `"docker" "rm" "-f" "1ffa8ecf61518a520e1cca905b28757c245a2bcb9b863f5d183c35647178344e"`
Sep 10 10:10:29.657 INFO blam! 1ffa8ecf61518a520e1cca905b28757c245a2bcb9b863f5d183c35647178344e