Exception is swallowed masking error and creates confusing log output

[simbo1905]

This line has a swallow of a throwable that hides bugs:

mjson/src/test/java/testmjson/TestJsonSchemaSuite.java

Line 91 in 59c209d

System.err.println("Exception while running test " + description + " from " + group);

When I fix up my own copy of the code to get the full test suite to pass there is suspicious logging from that line about swallowing the exception. When I remove the catch of throwable then 7 test fail.