I'd rather see DMD automatically pass the expression that triggered the error (as it is done in C) to replace this useless "Unittest failure" that forces me to look through the code.
D has the advantage that it catches most errors at CT. You can write a lot of code and just compile it to ensure it's more or less correct. I often write code that won't pass the unittests, but I need to check if my template / CT logic is correct. It may takes 20 compilations cycle before I run the unittests. Running the tests as part of the build would REALLY slow down the process -especially given that unittest is communicated to imported module, which means imported libraries. You don't want to catch unittests failures on every compilation cycle, but rather before your code make it to the repo - that's what CI systems are for -.
