Usage of implicit method attributeKey defined in object JavaMapping, which is not accessible here

[xuwei-k]

Steps

build.sbt

scalaVersion := "3.8.4"

val pekkoVersion = "2.0.0-M3"

libraryDependencies ++= Seq(
  "org.apache.pekko" %% "pekko-actor-typed" % pekkoVersion,
  "org.apache.pekko" %% "pekko-stream" % pekkoVersion,
  "org.apache.pekko" %% "pekko-http" % "2.0.0-M1"
)

scalacOptions += "-deprecation"

project/build.properties

sbt.version=1.12.11

A.scala

import org.apache.pekko.http.scaladsl.model.HttpRequest
import org.apache.pekko.http.scaladsl.model.AttributeKeys

class A {
  def b(request: HttpRequest) = request.attribute(AttributeKeys.remoteAddress)
}

Problem

[warn] 5 |  def b(request: HttpRequest) = request.attribute(AttributeKeys.remoteAddress)
[warn]   |                                                                              ^
[warn]   |Usage of implicit method attributeKey defined in object JavaMapping, which is not accessible here. In Scala 3.10, this implicit will no longer be found.

Note

• Fix missing deprecation warning for implicit in non-accessible companion scala/scala3#25608
• Deprecation when inferring implicit from non-accessible companion scala/scala3#25516