For instance, running on a 4 core machine:
franksen@tiber: ...src/darcs/latest_work >
./dist-newstyle/build/i386-linux/ghc-8.2.2/darcs-2.13.0/build/darcs-test/darcs-test
--shell=no --unit=no --network=no --hashed -j4
reports
diffTrees identical: [Failed]
ERROR: user error (No pristine tree is available!)
index content: [Failed]
ERROR: harness/hstestdata.zip: openBinaryFile: does not exist (No such
file or directory)