Help: `ant docs` with 2.11.x branch works for you?

[Janek]

Hi,

I might be doing something very wrong here but I am not able to build the ScalaDoc for this PR,

  https://github.com/scala/scala/pull/4765

With `$ ant docs` this is the outcome,

BUILD FAILED

/home/jdb/workspaces/public/scala/build.xml:1685: The following error occurred while executing this line:

/home/jdb/workspaces/public/scala/build-ant-macros.xml:406: The following error occurred while executing this line:

/home/jdb/workspaces/public/scala/build-ant-macros.xml:452: java.lang.AbstractMethodError: scala.tools.nsc.settings.MutableSettings

scala$tools$nsc$settings$ScalaSettings$_setter_$completion_$eq(Lscala/tools/nsc/settings/MutableSettings$ChoiceSetting;)V

        at scala.tools.nsc.settings.ScalaSettings$class.$init$(ScalaSettings.scala:178)

        at scala.tools.nsc.settings.MutableSettings.<init>(MutableSettings.scala:20)

        at scala.tools.nsc.Settings.<init>(Settings.scala:12)

        at scala.tools.nsc.doc.Settings.<init>(Settings.scala:15)

        at scala.tools.ant.Scaladoc.initialize(Scaladoc.scala:627)

        at scala.tools.ant.Scaladoc.execute(Scaladoc.scala:670)

Is this problem local to me?

Commit https://github.com/scala/scala/commit/f279894a3efe84b85e9becfd0ce96aaa0c21bfbd recently added a val `completion` to ScalaSettings. I haven't linked that change to the error have except

by name so it could be unrelated.

It would be useful to know if anyone else is seeing this.

Best Regards,

Janek

[Som Snytt]

Perhaps ant all.clean first or rm -rf build.

I'm chiming in with the obvious only because no one else has chimed. And you didn't say "after git clean -dfx"...

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[Janek]

`ant clean build` solved it. Thanks!