A new phenomenon is driving me crazy. I have a program that reads a config file containing JSON. Until recently, I could edit the config file and rerun my program without it building. Now it builds on every edit. That's not much of a problem, but the 20 seconds or so it takes to build seems like an eternity compared to the earlier behavior.
The problem occurs with "cargo run" from the command line on a Mac running cargo 1.37.0. The only change I can think of was adding the config file to my github repository.