in protocol/src/main/scala/org/jetbrains/plugins/scala/indices/protocol/sbt/Locking.scala [16:25]
def lockFile(compilationInfoDir: Path): Path =
compilationInfoDir.resolve(".sbt-idea-lock")
private def mkdirs(dir: Path): Boolean =
try {
Files.createDirectories(dir)
true
} catch {
case _: IOException => false
}