As a recent employee of Google, Google's build system is the one tool I miss the most. No other available tool outside of google even comes close.
Findings I found interesting:<p>1. No correlation between build frequency and build failure ratio. 2. No correlation between build time and build frequency. 3. No correlation between experience and build failure ratio.
I think Mozilla's Rust team was considering telemetry reports, not just for rustc compiler crashes, but also for syntax errors in user code. Knowing what kind of syntax errors are most common in user code could provide feedback for language design.
I have been mulling over a research MSc looking at the metrics available from OSS projects and how they might feed into better software practises (I think we can improve somewhere).<p>This stuff kind of inspires me - but also makes me quake a little in my boots