Happened with me on older Debian. There:

$ nc -lU
nc: invalid option -- 'U'
nc -h for help

Which leads to:

$ make run-test TEST=java/nio/file/attribute/BasicFileAttributeView/UnixSocketFile.java
...
TEST RESULT: Error. Agent error: java.lang.Exception: Agent 1 timed out with a timeout of 480 seconds; check console log for any additional details


This fixes the test:

diff -r 8de62c4af8c7 test/jdk/java/nio/file/attribute/BasicFileAttributeView/UnixSocketFile.java
--- a/test/jdk/java/nio/file/attribute/BasicFileAttributeView/UnixSocketFile.java Fri Apr 12 13:35:23 2019 +0800
+++ b/test/jdk/java/nio/file/attribute/BasicFileAttributeView/UnixSocketFile.java Fri Apr 12 15:17:01 2019 +0200
@@ -61,6 +61,14 @@
             return;
         }
 
+ // Verify that 'nc' accepts '-U' for Unix domain sockets.
+ // Skip the test if it is not.
+ Process procHelp = Runtime.getRuntime().exec(CMD_BASE + " -h");
+ if (procHelp.waitFor() != 0) {
+ System.err.println("Netcat does not accept required options; skipping test.");
+ return;
+ }
+
         // Create a new sub-directory of the nominal test directory in which
         // 'nc' will create the socket file.
         String testSubDir = System.getProperty("test.dir", ".")