Error: × Failed to interpret etc/iocaine.kdl
├─▶ Failed to evaluate `prometheus-server`
├─▶ Failed to evaluate `bind-to`
├─▶ Failed to evaluate `target`
╰─▶ Invalid tokio-listener address type
╭─[11:13]
10 │ bind-to @iocaine.metrics
11 │ bind-to localhost:42042
· ───────┬───────
· ╰── here
12 │ persist interval="1h"
╰────
help: Hostnames are not supported, see the documentation for supported address types.

I love that I can make good error messages now. Same problem on iocaine3 is an ugly deserialization panic - that tells kind of what the issue is, but in an ugly way.