Scaladoc regression for references to `scala.concurrent`

[WojciechMazur]

Based on the OpenCB failure in rjolly/scas - build logs

Compiler version

Last good release: 3.9.0-RC1-bin-20260428-9cfa0dd-NIGHTLY
First bad release: 3.9.0-RC1-bin-20260429-88140bc-NIGHTLY

Bisect points to d9b4251 / #25373

Minimized code

import scala.concurrent.{ExecutionContext, CanAwait, Future}
import scala.concurrent.duration.Duration
import scala.util.{Try, Success}

class Lazy[+T](body: => T) extends Future[T] {
  lazy val await = body
  def value = Some(Success(await))
  def isCompleted = true

  def onComplete[U](func: Try[T] => U)(using executor: ExecutionContext) = ???
  def ready(atMost: Duration)(using permit: CanAwait) = ???
  def result(atMost: Duration)(using permit: CanAwait) = ???
  override def map[S](f: T => S)(using executor: ExecutionContext) = ???
  override def flatMap[S](f: T => Future[S])(using executor: ExecutionContext) = ???
  def transform[S](f: Try[T] => Try[S])(using executor: ExecutionContext): Future[S] = ???
  def transformWith[S](f: Try[T] => Future[S])(using executor: ExecutionContext): Future[S] = ???
}

Output

❯ scala doc test.scala -S 3.9.0-RC4 -f
Compiling project (Scala 3.9.0-RC4, JVM (25))
Compiled project (Scala 3.9.0-RC4, JVM (25))
Option -classpath was updated
-- Warning: test.scala:11:6 ----------------------------------------------------
11 |  def ready(atMost: Duration)(using permit: CanAwait) = ???
   |      ^
   |      Couldn't resolve a member for the given link query: Await.ready
-- Warning: test.scala:12:6 ----------------------------------------------------
12 |  def result(atMost: Duration)(using permit: CanAwait) = ???
   |      ^
   |      Couldn't resolve a member for the given link query: Await.result
an identifier expected, but $XMLSTART$< found
-- Error: test.scala:10:10 -----------------------------------------------------
10 |  def onComplete[U](func: Try[T] => U)(using executor: ExecutionContext) = ???
   |          ^
   |          Not found: ExecutionContext
-- Error: test.scala:10:27 -----------------------------------------------------
10 |  def onComplete[U](func: Try[T] => U)(using executor: ExecutionContext) = ???
   |                           ^
   |              (<error Not found: ExecutionContext>#Implicits :
   |                <error Not found: ExecutionContext>) is not a legal path
   |              since it is not a concrete type
-- Error: test.scala:10:12 -----------------------------------------------------
10 |  def onComplete[U](func: Try[T] => U)(using executor: ExecutionContext) = ???
   |            ^
   |            Not found: Future
3 warnings found
4 errors found

Expectation

Both warnings and errors should not be present as these are explicitlly imported