This test,

sage: m = random_matrix(ZZ, 100, 100, x=-1000, y=1000, density=.1)  
sage: m.parent()                                                    
Full MatrixSpace of 100 by 100 dense matrices over Integer Ring     
sage: H, U = m.hermite_form(algorithm="flint", transformation=True)  # long time

usually finishes immediately, often takes a few minutes, and rarely (if you're unlucky) takes ~25 minutes. Unless the 100 is imporant, we should probably decrease the size of this example down to, say, 10.

Component: doctest framework

Author: Michael Orlitzky

Branch/Commit: 9b21f8f

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/33363