Simplify CI, drop Rust 1.31 compatibility #180
Merged
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This simplifies the CI scripts and most importantly, this removes the test against a fixed version of Rust.
Over the years, we’ve repeatedly seen build failures in our CI, even when nothing changed in
textwrap
. The failures happened because we tested against a fixed version of Rust, but our dependencies kept releasing new patch it has versions that would push up the minimum required Rust version.The build failures makes it infeasible to keep
textwrap
compatible with any particular version of Rust. We will therefore track the latest stable version of Rust from now on.