Alp Mestanogullari authored Nov 12, 2019 and Ben Gamari committed Nov 12, 2019

We instead want to collect the runtime stats (with collect_stats, instead of
collect_compiler_stats).

This should fix a number of perf tests failures we have been seeing, where
we suddenly started measuring metrics we didn't intend to measure, which
tend to fall outside of the acceptance window.

Metric Decrease:
    lazy-bs-alloc
    T3586

Metric Increase:
    space_leak_001
    T4801
    T5835
    T12791