builder > A.scala B.scala
compiling Set(A.scala, B.scala)
Changes: Map()
builder > A.scala
compiling Set(A.scala)
Changes: Map(trait A -> List(Changed(Definition(A.x))[method x changed from ()T to ()T flags: <deferred> <method>], Changed(Definition(A.y))[method y changed from (a: T)Unit to (a: T)Unit flags: <deferred> <method>], Changed(Definition(A.z))[method z changed from [B <: T]()Unit to [B <: T]()Unit flags: <deferred> <method>]))
invalidate B.scala because inherited method changed [Changed(Definition(A.x))[method x changed from ()T to ()T flags: <deferred> <method>]]
compiling Set(B.scala)
B.scala:2: error: type mismatch;
 found   : Int(3)
 required: String
  def x = 3
          ^
