throw IOException("boom") // Despite this exception, 'sink' is healthy.
        }
      }

    val callA =
      client.newCall(
        Request(
          url = server.url("/"),
          body = requestBody,
        ),
      )

    assertFailsWith<IOException> {
      callA.execute()
    }.also { expected ->
      assertThat(expected).hasMessage("boom")
    }

FDD0..FDEF    ; disallowed                             # 3.1  <noncharacter-FDD0>..<noncharacter-FDEF>
FDF0          ; mapped                 ; 0635 0644 06D2 #1.1  ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM
FDF1          ; mapped                 ; 0642 0644 06D2 #1.1  ARABIC LIGATURE QALA USED AS KORANIC STOP SIGN ISOLATED FORM

    client =
      client.newBuilder()
        .dispatcher(dispatcher)
        .build()
    val requestA = Request(server.url("/a"))
    val requestB = Request(server.url("/b"))
    val callA = client.newCall(requestA)
    val callB = client.newCall(requestB)
    server.dispatcher =
      object : mockwebserver3.Dispatcher() {
        var nextResponse = 'A'