chore: add minumum supported rust version #475
Merged
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Description
To help us avoid future issues with folks using the wrong rust version, I'm adding this field into our cargo.toml.
Testing
Well...the main thing to review is: did I get the version right? :) I picked 1.39.0 given that I at least know for sure that we're depending on async/await which was introduced then. Anything that rolled into Rust stable afterwards we're requiring?
Issue(s)
Closes #424.