My deployments have been failing for several days during the build phase. The build log is empty except for a single line: "Failed to connect before the deadline". The build never actually starts (no apt-get, composer, or npm output appears).

• Builder: Dockerfile (my Dockerfile is valid and works locally)
• The app runs fine locally, and the previous deploy is still live and working
• I've tried redeploying multiple times over several days, same result every time
• The "Agent usage limit reached" diagnosis message appears, but I still have trial credits remaining
• Only a small PHP code change was pushed; nothing in the Dockerfile or dependencies changed

This looks like an infrastructure/connectivity issue on the build side, not my code. Can you check on your end?