The following hotspot tests:
  serviceability/dcmd/gc/HeapDumpAllTest.java
  serviceability/dcmd/gc/HeapDumpTest.java
have the following commands:
  * @build jdk.test.lib.hprof.module.*
  * @build jdk.test.lib.hprof.utils.*

But those packages do not exist.
jtreg starting from 4.1 b13 doesn't allow building non existing staff, so switching to the new jtreg build will cause new test failures.

Tests should be fixed before switching to the new jtreg.