The output of the file command for jvm.pdb is not entirely stable. I have now seen a handful of failures over the last month looking like this:

[2019-08-20T20:34:25,887Z] JDK File types...
[2019-08-20T20:34:25,902Z] other: ./bin/server/jvm.pdb: MSVC program database ver 7.00, 4096*18031 bytes
[2019-08-20T20:34:25,902Z] this : ./bin/server/jvm.pdb: MSVC program database ver 7.00, 4096*18033 bytes
[2019-08-20T20:35:20,152Z] Test File types...
[2019-08-20T20:35:20,152Z] other: ./bin/server/jvm.pdb: MSVC program database ver 7.00, 4096*18031 bytes
[2019-08-20T20:35:20,152Z] this : ./bin/server/jvm.pdb: MSVC program database ver 7.00, 4096*18033 bytes

We need to create filter this in the compare script.