[Epic] Quieter builds for local devs, noisy for CI

[binkley]

Cards in the epic: #467, #600.

We want to follow two principles:

1. Mostly quiet builds for local developers unless there are errors/warnings
2. Mostly noisy builds for CI

The reasoning:

• Local builds — developers build many times a day, and extra logging gets in the way of seeing what they are focused on
• CI builds — CI builds are remote, and logging is the only insight available. Examining CI builds is typical only when addressing a concern