Tests break in Node.js 0.10.0 with "warning: Recursive process.nextTick detected"

[TamsynUlthara]

I have Mocha tests that have started to break in Node.js 0.10.0 with the following message:

(node) warning: Recursive process.nextTick detected. This will break in the next version of node. Please use setImmediate for recursive deferral.

util.js:35
  var str = String(f).replace(formatRegExp, function(x) {
                      ^
RangeError: Maximum call stack size exceeded

The initial "process.nextTick" warning is repeated many times, as one might expect from the recursion.

I'm having a very hard time isolating a minimal test case. It only seems to trigger under a certain combination of test files, but removing tests at random "fixes" the problem. It seems like I can still trigger the problem even if I modify my tests to be empty (i.e., none of my own code is being run, just the BDD "describe" and "it" calls).

As soon as I can get something minimal, I'll add it here.

Update: The following single-file test suite will trigger the bug.

https://gist.github.com/tomxtobin/5173183

[TamsynUlthara]

Oops — turns out this is a dupe of #754 and was fixed in 73c49eb.