Test com/sun/jdi/PrivateTransportTest.sh fails on MacOS.

STDOUT:
JDK under test is: /Users/runner/jdk-macos-x64/jdk-1.8.0-internal+0_osx-x64_bin/j2sdk-image
Setup private transport library by copying an existing one and renaming
cp /Users/runner/jdk-macos-x64/jdk-1.8.0-internal+0_osx-x64_bin/j2sdk-image/jre/lib/libdt_socket.dylib /Users/runner/work/jdk8u-dev/jdk8u-dev/test-results/testoutput/jdk_tier1/JTwork/classes/com/sun/jdi/libprivate_dt_socket.dylib
LD_LIBRARY_PATH=/Users/runner/work/jdk8u-dev/jdk8u-dev/test-results/testoutput/jdk_tier1/JTwork/classes/com/sun/jdi
/Users/runner/jdk-macos-x64/jdk-1.8.0-internal+0_osx-x64_bin/j2sdk-image/bin/java -agentlib:jdwp=transport=private_dt_socket,server=y,suspend=n -classpath "/Users/runner/work/jdk8u-dev/jdk8u-dev/test-results/testoutput/jdk_tier1/JTwork/classes/com/sun/jdi" HelloWorld
FATAL ERROR in native method: JDWP No transports initialized, jvmtiError=AGENT_ERROR_TRANSPORT_LOAD(196)
test status for was: 134
The test failed :-(
exit status was 134
STDERR:
ERROR: transport library not found: private_dt_socket
ERROR: JDWP Transport private_dt_socket failed to initialize, TRANSPORT_LOAD(509)
JDWP exit error AGENT_ERROR_TRANSPORT_LOAD(196): No transports initialized [debugInit.c:750]
/Users/runner/work/jdk8u-dev/jdk8u-dev/jdk/test/com/sun/jdi/PrivateTransportTest.sh: line 203: 16866 Abort trap: 6 /Users/runner/jdk-macos-x64/jdk-1.8.0-internal+0_osx-x64_bin/j2sdk-image/bin/java -agentlib:jdwp=transport=private_dt_socket,server=y,suspend=n -classpath "/Users/runner/work/jdk8u-dev/jdk8u-dev/test-results/testoutput/jdk_tier1/JTwork/classes/com/sun/jdi" HelloWorld
unspecified test failure