The startup line printed the DSN whole:
* => goadmin:<password>@tcp(host:3306)/go-admin?...
So every deployment wrote its own database credential into its own logs,
where a log shipper, a support bundle or a screenshot of a terminal
carries it onward. Found while reading deploy output, which is exactly
how it leaks.
The host and username stay - they are what makes the line worth printing
- and only the password is replaced. Both DSN shapes this project accepts
are covered, a sqlite path is left alone, and anything unparseable is
withheld rather than echoed, since it may hold a credential too.