JUnit Result Aggregation

I'm familiar with aggregating junit test results within a single build, but are there any tools that let you aggregate results across different builds?

I'd like to discover which tests failed most frequently, though not necessarily contin开发者_Python百科uously.

I'd go for a simple shell script (grep+sed / awk), gathering output from distinct text/xml files. Alternatively, you could define a custom formatter which appends failure logs to a single file.

Maven has aggregation support, but that requires switching the whole build to maven.