sbt-sonatype 3.1 does not work with sbt 1.2.8
https://travis-ci.org/xuwei-k/sbt-sonatype-sbt-version-compatibility/builds/581505947
[error] java.lang.NoSuchMethodError: sbt.package$.singleFileJsonFormatter()Lsjsonnew/JsonFormat;
[error] at xerial.sbt.Sonatype$SonatypeKeys.$init$(Sonatype.scala:36)
[error] at xerial.sbt.Sonatype$autoImport$.<init>(Sonatype.scala:41)
[error] at xerial.sbt.Sonatype$autoImport$.<clinit>(Sonatype.scala)
[error] at xerial.sbt.Sonatype$.sonatypeSettings$lzycompute(Sonatype.scala:52)
[error] at xerial.sbt.Sonatype$.sonatypeSettings(Sonatype.scala:51)
[error] at xerial.sbt.Sonatype$.projectSettings(Sonatype.scala:44)
[error] at sbt.internal.Load$.$anonfun$resolveProject$3(Load.scala:1062)
[error] at scala.collection.TraversableLike.$anonfun$flatMap$1(TraversableLike.scala:240)
[error] at scala.collection.immutable.List.foreach(List.scala:388)
[error] at scala.collection.TraversableLike.flatMap(TraversableLike.scala:240)
[error] at scala.collection.TraversableLike.flatMap$(TraversableLike.scala:237)
[error] at scala.collection.immutable.List.flatMap(List.scala:351)
[error] at sbt.internal.Load$.autoPluginSettings$1(Load.scala:1062)
[error] at sbt.internal.Load$.expandSettings$1(Load.scala:1081)
[error] at sbt.internal.Load$.$anonfun$resolveProject$10(Load.scala:1084)
[error] at scala.collection.IndexedSeqOptimized.foldLeft(IndexedSeqOptimized.scala:56)
[error] at scala.collection.IndexedSeqOptimized.foldLeft$(IndexedSeqOptimized.scala:64)
[error] at scala.collection.mutable.WrappedArray.foldLeft(WrappedArray.scala:37)
[error] at scala.collection.TraversableOnce.$div$colon(TraversableOnce.scala:150)
[error] at scala.collection.TraversableOnce.$div$colon$(TraversableOnce.scala:150)
[error] at scala.collection.AbstractTraversable.$div$colon(Traversable.scala:104)
[error] at sbt.internal.Load$.expandSettings$1(Load.scala:1083)
[error] at sbt.internal.Load$.$anonfun$resolveProject$1(Load.scala:1097)
[error] at sbt.internal.Load$.timed(Load.scala:1395)
[error] at sbt.internal.Load$.resolveProject(Load.scala:1051)
[error] at sbt.internal.Load$.finalizeProject$1(Load.scala:886)
[error] at sbt.internal.Load$.$anonfun$loadTransitive$15(Load.scala:989)
[error] at sbt.internal.Load$.timed(Load.scala:1395)
[error] at sbt.internal.Load$.loadTransitive(Load.scala:989)
[error] at sbt.internal.Load$.loadProjects$1(Load.scala:726)
[error] at sbt.internal.Load$.$anonfun$loadUnit$11(Load.scala:729)
[error] at sbt.internal.Load$.timed(Load.scala:1395)
[error] at sbt.internal.Load$.$anonfun$loadUnit$1(Load.scala:729)
[error] at sbt.internal.Load$.timed(Load.scala:1395)
[error] at sbt.internal.Load$.loadUnit(Load.scala:688)
[error] at sbt.internal.Load$.$anonfun$builtinLoader$4(Load.scala:484)
[error] at sbt.internal.BuildLoader$.$anonfun$componentLoader$5(BuildLoader.scala:176)
[error] at sbt.internal.BuildLoader.apply(BuildLoader.scala:241)
[error] at sbt.internal.Load$.loadURI$1(Load.scala:546)
[error] at sbt.internal.Load$.loadAll(Load.scala:562)
[error] at sbt.internal.Load$.loadURI(Load.scala:492)
[error] at sbt.internal.Load$.load(Load.scala:471)
[error] at sbt.internal.Load$.$anonfun$apply$1(Load.scala:251)
[error] at sbt.internal.Load$.timed(Load.scala:1395)
[error] at sbt.internal.Load$.apply(Load.scala:251)
[error] at sbt.internal.Load$.defaultLoad(Load.scala:69)
[error] at sbt.BuiltinCommands$.liftedTree1$1(Main.scala:829)
[error] at sbt.BuiltinCommands$.doLoadProject(Main.scala:829)
[error] at sbt.BuiltinCommands$.$anonfun$loadProjectImpl$2(Main.scala:800)
[error] at sbt.Command$.$anonfun$applyEffect$4(Command.scala:142)
[error] at sbt.Command$.$anonfun$applyEffect$2(Command.scala:137)
[error] at sbt.Command$.process(Command.scala:181)
[error] at sbt.MainLoop$.processCommand(MainLoop.scala:151)
[error] at sbt.MainLoop$.$anonfun$next$2(MainLoop.scala:139)
[error] at sbt.State$$anon$1.runCmd$1(State.scala:246)
[error] at sbt.State$$anon$1.process(State.scala:250)
[error] at sbt.MainLoop$.$anonfun$next$1(MainLoop.scala:139)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:16)
[error] at sbt.MainLoop$.next(MainLoop.scala:139)
[error] at sbt.MainLoop$.run(MainLoop.scala:132)
[error] at sbt.MainLoop$.$anonfun$runWithNewLog$1(MainLoop.scala:110)
[error] at sbt.io.Using.apply(Using.scala:22)
[error] at sbt.MainLoop$.runWithNewLog(MainLoop.scala:104)
[error] at sbt.MainLoop$.runAndClearLast(MainLoop.scala:59)
[error] at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:44)
[error] at sbt.MainLoop$.runLogged(MainLoop.scala:35)
[error] at sbt.StandardMain$.runManaged(Main.scala:138)
[error] at sbt.xMain.run(Main.scala:89)
[error] at xsbt.boot.Launch$$anonfun$run$1.apply(Launch.scala:109)
[error] at xsbt.boot.Launch$.withContextLoader(Launch.scala:128)
[error] at xsbt.boot.Launch$.run(Launch.scala:109)
[error] at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:35)
[error] at xsbt.boot.Launch$.launch(Launch.scala:117)
[error] at xsbt.boot.Launch$.apply(Launch.scala:18)
[error] at xsbt.boot.Boot$.runImpl(Boot.scala:56)
[error] at xsbt.boot.Boot$.main(Boot.scala:18)
[error] at xsbt.boot.Boot.main(Boot.scala)
[error] java.lang.NoSuchMethodError: sbt.package$.singleFileJsonFormatter()Lsjsonnew/JsonFormat;
[error] Use 'last' for the full log.
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?