I see this:

----------configuration:(11/604)----------
Boot Layer
  add modules: java.base jdk.crypto.cryptoki
  add exports: java.base/com.sun.crypto.provider ALL-UNNAMED
               java.base/sun.security.jca ALL-UNNAMED
               java.base/sun.security.provider ALL-UNNAMED
               java.base/sun.security.rsa ALL-UNNAMED
               java.base/sun.security.tools.keytool ALL-UNNAMED
               java.base/sun.security.x509 ALL-UNNAMED
               jdk.crypto.cryptoki/sun.security.pkcs11 ALL-UNNAMED
  add opens: jdk.crypto.cryptoki/sun.security.pkcs11 ALL-UNNAMED

----------System.out:(2/126)----------
Warning: can't find NSS librarys on this machine, skipping test
libsoftokn3 version not found, set to 0.0: nulllibsoftokn3.so
----------System.err:(40/2662)----------
java.io.FileNotFoundException: nulllibsoftokn3.so (No such file or directory)
at java.base/java.io.FileInputStream.open0(Native Method)
at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:112)
at PKCS11Test.getNSSInfo(PKCS11Test.java:413)
at PKCS11Test.getNSSInfo(PKCS11Test.java:389)
at PKCS11Test.getNSSVersion(PKCS11Test.java:365)
at PKCS11Test.<clinit>(PKCS11Test.java:667)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:115)
at java.base/java.lang.Thread.run(Thread.java:834)
java.security.ProviderException: Could not initialize NSS
at jdk.crypto.cryptoki/sun.security.pkcs11.SunPKCS11.<init>(SunPKCS11.java:218)
at jdk.crypto.cryptoki/sun.security.pkcs11.SunPKCS11$1.run(SunPKCS11.java:113)
at jdk.crypto.cryptoki/sun.security.pkcs11.SunPKCS11$1.run(SunPKCS11.java:110)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at jdk.crypto.cryptoki/sun.security.pkcs11.SunPKCS11.configure(SunPKCS11.java:110)
at PKCS11Test.getSunPKCS11(PKCS11Test.java:152)
at TestNssDbSqlite.initializeProvider(TestNssDbSqlite.java:119)
at TestNssDbSqlite.initialize(TestNssDbSqlite.java:110)
at TestNssDbSqlite.main(TestNssDbSqlite.java:67)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:115)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.io.IOException: NSS initialization failed
at jdk.crypto.cryptoki/sun.security.pkcs11.Secmod.initialize(Secmod.java:234)
at jdk.crypto.cryptoki/sun.security.pkcs11.SunPKCS11.<init>(SunPKCS11.java:213)
... 14 more

.. in our nightly tests on machines which have not the full set of NSS libs installed.

Comments in PKCS11Tests::getNSSLibDir() look like the test should be skipped in case NSS libraries are not fully installed:

".. skipping tests"

However, this is not what happens, the test will fail.

Can be reproduced easily on any Linux, even if NSS is installed, by temporarily renaming the system libsoftokn3.so to something else.