Commit a7bc68f appears to have changed the methods of the Migrator type to accept a pointer rather than a value. The NewMigrator constructor, however, still returns a Migrator by value, which means that a call like:

err := schema.NewMigrator().Apply(x, y)

(which used to work) will now fail because the Migrator is in a temporary and the compiler will not desugar the address.

For now I can work around this by rewriting expressions like the above as:

m := schema.NewMigrator()
err := m.Apply(x, y)

but I think the value returned by the constructor should have the correct type for use by the methods.