Test_3.scala:2: error: macro cannot be expanded, because it was compiled by an incompatible macro engine (internal diagnostic: expected = v7.0 (implemented in Scala 2.11.0-M8), actual = vxxx (implemented in the incompatibleMacroEngine plugin))
  Macros.foo
  ^
Test_3.scala:3: error: macro cannot be expanded, because it was compiled by an incompatible macro engine (internal diagnostic: expected = v7.0 (implemented in Scala 2.11.0-M8), actual = vxxx (implemented in the incompatibleMacroEngine plugin))
  Macros.foo
  ^
two errors found