https://issues.dlang.org/show_bug.cgi?id=13727
--- Comment #3 from Vladimir Panteleev <thecybersha...@gmail.com> --- (In reply to Steven Schveighoffer from comment #2) > I'm going to throw a shot in the dark out here, and say it's an issue with > DMC runtime. Which means it's really a problem with DMC, not DMD or phobos. I agree. However, we might be able to work around thread safety issues in the DMC runtime using global locks. > I'll note that the DMC runtime has a limit of 64 file descriptors, including > the standard handles. This shouldn't be relevant except when running the test program on systems with 64 or more processors/cores. --