Fix useless conversion lints, use Rust 2021 feature resolver #357
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This PR Fixes a couple clippy lints that recently cropped up - we were calling
into_iter
unnecessarily in someInstanceBuilder
methodsI also noticed a warning about the Rust 2021 feature resolver, so I set
workspace.resolver = "2"
to silence it. It looks to work just fine and I can't see any significant drawbacks - see https://doc.rust-lang.org/edition-guide/rust-2021/default-cargo-resolver.html for details