https://issues.dlang.org/show_bug.cgi?id=17640
--- Comment #3 from github-bugzi...@puremagic.com --- Commits pushed to dmd-cxx at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/a5afe1609feed83f2233cad80a54201dccdd4b1e Fix Issue 17640 - std.concurrenct writeln conflicts with std.stdio writeln in unittests https://github.com/dlang/phobos/commit/72c1c2bc3a27f529128a453bc8327a76cd162e2f Merge pull request #5600 from wilzbach/fix-17640 --