Testing dotty on the Scala Standard Library

I ran the [rewriting tool](https://github.com/samuelgruetter/srewrite) with the `ExplicitUnitReturn` and `ExplicitImplicitTypes` transformations on the Scala Library 2.10.
Then I fed the result to dotty. FYI here's a list of the errors that I got (with links to the source position on github). I think most of them arise because the rewrite tool does not yet do all the rewritings that it should do, so I'll see how to improve it.

1)
-    early definitions are not supported; use trait parameters instead [IndexedSeqView.scala#L79](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/IndexedSeqView.scala#L79)
-    early definitions are not supported; use trait parameters instead [IndexedSeqView.scala#L80](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/IndexedSeqView.scala#L80)
-    early definitions are not supported; use trait parameters instead [IndexedSeqView.scala#L81](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/IndexedSeqView.scala#L81)
-    early definitions are not supported; use trait parameters instead [IndexedSeqView.scala#L82](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/IndexedSeqView.scala#L82)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L76](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L76)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L81](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L81)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L82](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L82)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L83](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L83)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L84](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L84)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L85](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L85)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L86](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L86)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L87](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L87)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L88](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L88)
-    early definitions are not supported; use trait parameters instead [IterableViewLike.scala#L89](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableViewLike.scala#L89)
-    early definitions are not supported; use trait parameters instead [ParIterableViewLike.scala#L147](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/ParIterableViewLike.scala#L147)
-    early definitions are not supported; use trait parameters instead [ParSeqViewLike.scala#L109](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/ParSeqViewLike.scala#L109)
-    early definitions are not supported; use trait parameters instead [ParSeqViewLike.scala#L131](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/ParSeqViewLike.scala#L131)
-    early definitions are not supported; use trait parameters instead [ResizableParArrayCombiner.scala#L90](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/mutable/ResizableParArrayCombiner.scala#L90)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L76](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L76)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L77](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L77)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L78](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L78)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L79](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L79)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L80](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L80)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L81](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L81)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L82](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L82)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L83](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L83)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L84](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L84)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L89](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L89)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L95](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L95)
-    early definitions are not supported; use trait parameters instead [SeqViewLike.scala#L96](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqViewLike.scala#L96)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L53](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L53)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L54](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L54)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L55](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L55)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L56](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L56)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L57](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L57)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L58](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L58)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L59](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L59)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L60](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L60)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L61](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L61)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L63](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L63)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L67](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L67)
-    early definitions are not supported; use trait parameters instead [StreamViewLike.scala#L69](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/StreamViewLike.scala#L69)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L172](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L172)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L173](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L173)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L174](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L174)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L175](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L175)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L176](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L176)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L177](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L177)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L178](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L178)
-    early definitions are not supported; use trait parameters instead [TraversableViewLike.scala#L179](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableViewLike.scala#L179)
-    early definitions are not supported; use trait parameters instead [TrieIterator.scala#L67](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/TrieIterator.scala#L67)

2)
-    existential types no longer supported; use a wildcard type or dependent type instead [IndexedSeqView.scala#L108](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/IndexedSeqView.scala#L108)
-    existential types no longer supported; use a wildcard type or dependent type instead [IterableView.scala#L25](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/IterableView.scala#L25)
-    existential types no longer supported; use a wildcard type or dependent type instead [ParIterableView.scala#L39](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/ParIterableView.scala#L39)
-    existential types no longer supported; use a wildcard type or dependent type instead [ParSeqView.scala#L39](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/ParSeqView.scala#L39)
-    existential types no longer supported; use a wildcard type or dependent type instead [SeqView.scala#L25](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/SeqView.scala#L25)
-    existential types no longer supported; use a wildcard type or dependent type instead [TraversableView.scala#L30](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/TraversableView.scala#L30)

3)
-    '=' expected but 'end of statement' found. [Benchmark.scala#L49](https://github.com/scala/scala/tree/2.10.x/src/library/scala/testing/Benchmark.scala#L49)
-    '=' expected but 'end of statement' found. [BufferLike.scala#L105](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/BufferLike.scala#L105)
-    '=' expected but 'end of statement' found. [BufferLike.scala#L74](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/BufferLike.scala#L74)
-    '=' expected but 'end of statement' found. [BufferLike.scala#L87](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/BufferLike.scala#L87)
-    '=' expected but 'end of statement' found. [Builder.scala#L43](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/Builder.scala#L43)
-    '=' expected but 'end of statement' found. [DefaultMapModel.scala#L27](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/DefaultMapModel.scala#L27)
-    '=' expected but 'end of statement' found. [IndexedSeqLike.scala#L54](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/IndexedSeqLike.scala#L54)
-    '=' expected but 'end of statement' found. [RedBlack.scala#L42](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/RedBlack.scala#L42)
-    '=' expected but 'end of statement' found. [SeqLike.scala#L43](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/mutable/SeqLike.scala#L43)
-    '=' expected but 'end of statement' found. [Signalling.scala#L80](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/generic/Signalling.scala#L80)
-    '=' expected but 'end of statement' found. [Signalling.scala#L89](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/generic/Signalling.scala#L89)
-    '=' expected but 'end of statement' found. [Signalling.scala#L95](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/generic/Signalling.scala#L95)
-    '=' expected but 'end of statement' found. [Tasks.scala#L115](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/Tasks.scala#L115)
-    '=' expected but 'end of statement' found. [Tasks.scala#L117](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/Tasks.scala#L117)
-    '=' expected but 'end of statement' found. [Tasks.scala#L121](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/Tasks.scala#L121)
-    '=' expected but 'end of statement' found. [Tasks.scala#L35](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/parallel/Tasks.scala#L35)

4)
-    identifier expected but '_' found. [RedBlackTree.scala#L89](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/RedBlackTree.scala#L89)
-    identifier expected but '_' found. [RedBlackTree.scala#L90](https://github.com/scala/scala/tree/2.10.x/src/library/scala/collection/immutable/RedBlackTree.scala#L90)

5)
-    illegal start of simple pattern [ContentModel.scala#L109](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/dtd/ContentModel.scala#L109)
-    illegal start of simple pattern [ContentModel.scala#L39](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/dtd/ContentModel.scala#L39)
-    illegal start of simple pattern [ContentModel.scala#L40](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/dtd/ContentModel.scala#L40)
-    illegal start of simple pattern [ContentModel.scala#L68](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/dtd/ContentModel.scala#L68)
-    illegal start of simple pattern [ContentModel.scala#L70](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/dtd/ContentModel.scala#L70)
-    illegal start of simple pattern [ElementValidator.scala#L102](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/dtd/ElementValidator.scala#L102)
-    illegal start of simple pattern [Utility.scala#L46](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/Utility.scala#L46)
-    illegal start of simple pattern [Utility.scala#L54](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/Utility.scala#L54)
-    illegal start of simple pattern [Utility.scala#L73](https://github.com/scala/scala/tree/2.10.x/src/library/scala/xml/Utility.scala#L73)


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Testing dotty on the Scala Standard Library #237

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Testing dotty on the Scala Standard Library #237

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