There has been a recent change to Oracle's internal test environment that now causes a couple of HTTP Client tests to timeout before they have had a chance to complete their execution, resulting in what ( incorrectly ) appears as a test failure / error. The solution is for these tests to specify an explicit relatively long timeout, so that they are allow enough time to run on extremely slow systems.

The tests in question are:
  test/jdk/java/net/httpclient/DigestEchoClientSSL.java
  test/jdk/java/net/httpclient/ProxyAuthDisabledSchemesSSL.java