I use https://github.com/gfoidl/trx2junit to convert TRX result files to JUnit (because the https://plugins.jenkins.io/junit plugin is so horribly memory-inefficient), however, xUnit does not accept its output:

Value '0.4798998' is not facet-valid with respect to pattern '(([0-9]{0,3},)[0-9]{3}|[0-9]{0,3})(\.[0-9]{0,3})?' for type 'SUREFIRE_TIME'.

Simply accepting 7 (or even 8) decimal digits instead of 3 should fix the problem.