val response = client.newCall(request).execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("thank you for retrying")
    assertThat(server.takeRequest().body.readUtf8()).isEqualTo("attempt 0")
    assertThat(server.takeRequest().body.readUtf8()).isEqualTo("attempt 1")
    assertThat(server.requestCount).isEqualTo(2)
  }

  @Test
  fun cannotRetryOneShotRequestBody() {