E113: Symbol Has Unparsable Version Number

This error is emitted when a symbol marked with the @migration annotation has a version number that cannot be parsed.

The compiler message indicates:

• The symbol is marked with @migration indicating changed semantics between versions
• The -Xmigration setting is used to warn about constructs whose behavior may have changed
• The version number in the annotation is malformed

The @migration annotation is used internally by the Scala standard library to mark methods whose behavior has changed between Scala versions. When the -Xmigration compiler flag is used, it warns about uses of these methods.

Reproducing this error with simple user code is difficult as @migration is primarily used in the standard library.

To resolve this error, ensure the version number in the @migration annotation follows a valid format (e.g., "2.13.0").

Note -Xmigration was never implemented in stable Scala 3, but @migration annotations be found by compiler when using Scala 2.13 libraries