message: Try using IPv4 now
diff: @@ -74,9 +74,10 @@ jobs:
  - run:
  name: Command-line Utilities
  command: |
  - cargo run --bin neqo-server -- '[::1]:4433' & spid=$!; \
  - cargo run --bin neqo-client -- 'https://[::1]:4433/'; r=$?; \
  - kill -9 $spid; [ "$r" -eq 0 ]
  + set -e; spid=""; \
  + trap '[ -z "$spid" ] || kill -9 "$spid"' EXIT; \
  + cargo run --bin neqo-server -- '0.0.0.0:4433' & spid=$!; \
  + cargo run --bin neqo-client -- 'https://127.0.0.1:4433/'
  - run:
  name: "Prepare for Caching"
  