*  Fix: Fail the HTTP/2 connection if first frame isn't `SETTINGS`.
 *  Fix: Forbid spaces in header names.
 *  Fix: Don't offer to do gzip if the request is partial.
 *  Fix: MockWebServer is now usable with JUnit 5. That update [broke the rules][junit_5_rules].
 *  New: Support `Expect: 100-continue` as a request header. Callers can use this header to
    pessimistically hold off on transmitting a request body until a server gives the go-ahead.

    assertThat(parse("http://host/\ufffd").encodedPath).isEqualTo("/%EF%BF%BD")
  }

  @Test
  fun usernameCharacters() {
    if (!isJvm) return // TODO: this test is broken on non-JVM platforms.
    UrlComponentEncodingTester
      .newInstance()
      .override(
        Encoding.PERCENT,
        '['.code,
        ']'.code,
        '{'.code,
        '}'.code,

          return false;
        }
        i++;
      }
      return true;
    }

    @Override
    public boolean equals(@Nullable Object object) {
      // Warning: this is broken if size() == 0, so it is critical that we
      // substitute an empty ImmutableSet to the user in place of this
      if (object instanceof CartesianSet) {
        CartesianSet<?> that = (CartesianSet<?>) object;

                    log.trace(Hexdump.toHexString(buffer, 4, n));

                }
                /*
                 * For some reason this can sometimes get broken up into another
                 * "NBSS Continuation Message" frame according to WireShark
                 */

                this.out.write(buffer, 0, 4 + n);
                this.out.flush();
            }

    LoadingCache<String, String> cache =
        builder.build(
            new CacheLoader<String, String>() {
              @Override
              @SuppressWarnings("CacheLoaderNull") // test of broken user implementation
              public String load(String key) throws InterruptedException {
                callCount.incrementAndGet();
                startSignal.await();
                return null;

    * As with the existing Wheezy image on GCE, docker is expected to already be installed in the image.
* Mark kube-push.sh as broken ([#25095](https://github.com/kubernetes/kubernetes/pull/25095), [@ihmccreery](https://github.com/ihmccreery))