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Re:Why is my Rust build so slow? by swiftcoder on Friday December 31, 2021 @10:30AM (#29748882)
Note that incremental builds are the default for debug builds.

For reasons that are not entirely elaborated in the article, the author is using release builds for local development.

Re:Why is my Rust build so slow? by estebank on Friday December 31, 2021 @12:56PM (#29750564)
In some verticals the only way to properly exercise and test the resulting binary is in release mode. Think things like DBs, game engines, etc. It's why good debug information in release is needed.