This is with the vthread wrapper. 4 failure so far on macOS: three x64 and one aarch64.

----------System.out:(9/859)----------
vmOpts: '-Xmx1024m -XX:MaxRAMPercentage=12.5 -Djava.io.tmpdir=/System/Volumes/Data/mesos/work_dir/slaves/779adf21-f3e5-4e6a-a889-8cc0f9bc6fbb-S16802/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/6c501963-d793-4a2b-bcd0-d76a3b66f367/runs/5b1775ab-e712-4614-be09-130106c74046/testoutput/test-support/jtreg_open_test_jdk_tier1_part3/tmp -ea -esa -Dmain.wrapper=Virtual'
javaOpts: '-XX:+UseG1GC -XX:-VerifyContinuations -Xmixed -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=256M -Dvthread.wrapper=true'
JVM version:19-loom
JDI version: 19.0
JVM description: Java Debug Interface (Reference Implementation) version 19.0
Java Debug Wire Protocol (Reference Implementation) version 19.0
JVM Debug Interface version 19.0
JVM version 19-loom (Java HotSpot(TM) 64-Bit Server VM, mixed mode, emulated-client, sharing)
Howdy!
----------System.err:(5/99)----------
[0ms] run args: [LocationTarg]
[2198345ms] LocationTest: passed

JavaTest Message: Test complete.

result: Error. Agent error: java.lang.Exception: Agent 5 timed out with a timeout of 1920 seconds; check console log for any additional details