Build error: cannot apply host to transport: *otelhttp.Transport

I’m getting the following error on fly deploy


==> Verifying app config
Validating /Users/ekr/dev/subscribe-gw/.claude/worktrees/resend/fly.toml
✓ Configuration is valid
 → Verified app config
==> Building image
Remote builder fly-builder-frosty-forest-2820 ready
==> Building image
✓ compatible remote builder found
INFO Override builder host with: https://fly-builder-frosty-forest-2820.fly.dev (was tcp://[fdaa:0:d562:a7b:4ec:feda:fc13:2]:2375)

Remote builder fly-builder-frosty-forest-2820 ready
Error: failed to fetch an image or build from source: cannot apply host to transport: *otelhttp.Transport

I have tried fly doctor (everything OK), deleting the builder, and resetting wireguard with no luck.

Have you tried not using Depot? There is a switch for it in flyctl.