According to https://alexn.org/blog/2020/05/26/scala-fatal-warnings.html
"-Wconf:cat=deprecation:ws,any:e"
Will turn warnings into errors, except for deprecations. But it gives this:
[error] bad option: '-Wconf:cat=deprecation:ws,any:e'
[error] (Compile / compileIncremental) Compilation failed
where
scalaVersion := "2.12.12"