Module validation failed with default debug

[asterite]

class Foo
  def self.one
    TWO.two { three }
    self
  end

  def self.three
    1 + 2
  end

  def two(&block)
    block
  end
end

ONE = Foo.one
TWO = Foo.new

ONE.three

Gives:

Module validation failed: !dbg attachment points at wrong subprogram for function
!4 = distinct !DISubprogram(name: "one", linkageName: "one", scope: !5, file: !5, line: 2, type: !6, isLocal: true, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, variables: !2)
i32 ()* @"*Foo::one:Foo:Class"
  %0 = alloca %"->", !dbg !9
!9 = !DILocation(line: 9, column: 5, scope: !10)
!10 = distinct !DISubprogram(name: "three", linkageName: "three", scope: !5, file: !5, line: 7, type: !6, isLocal: true, isDefinition: true, scopeLine: 7, isOptimized: false, unit: !0, variables: !2)
!10 = distinct !DISubprogram(name: "three", linkageName: "three", scope: !5, file: !5, line: 7, type: !6, isLocal: true, isDefinition: true, scopeLine: 7, isOptimized: false, unit: !0, variables: !2)