The following test timed out in the JDK17 CI:

javax/net/ssl/DTLS/RespondToRetransmit.java

Here's a snippet from the log file:

#section:main
----------messages:(7/390)----------
command: main RespondToRetransmit client 15 certificate_verify
reason: User specified action: run main/othervm RespondToRetransmit client 15 certificate_verify
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.base --add-exports java.base/sun.security.util=ALL-UNNAMED
Timeout information:
--- Timeout information end.
elapsed time (seconds): 494.158
----------configuration:(4/111)----------
Boot Layer
  add modules: java.base
  add exports: java.base/sun.security.util ALL-UNNAMED

----------System.out:(1117/99388)*----------
Server: =======handshake(199, NEED_UNWRAP)=======
Server: Receive DTLS records, handshake status is NEED_UNWRAP
Client: =======handshake(199, NEED_WRAP)=======
Client: ----produce handshake packet(99, OK, NEED_UNWRAP)----
Client: Produced 1 packets
Client: =======handshake(198, NEED_UNWRAP)=======
Client: Receive DTLS records, handshake status is NEED_UNWRAP

<snip>

Server: =======handshake(12, NEED_WRAP)=======
Server: ----produce handshake packet(99, OK, NEED_UNWRAP)----
Server: Produced 1 packets
Server: =======handshake(11, NEED_UNWRAP)=======
Server: Receive DTLS records, handshake status is NEED_UNWRAP
----------System.err:(0/0)----------
----------rerun:(39/7250)*----------

<snip>

result: Error. Program `/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-17+15-1230/macosx-x64.jdk/jdk-17.jdk/Contents/Home/bin/java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 494153ms).