Cargo-nextest: 3x faster than cargo test, per-test isolation, first-class CI

Re:Cargo-nextest: 3x faster than cargo test, per-test isolat... by mohsen1 on Thursday July 09, 2026 @05:19AM (#48843127)

Thanks! Any pro tips for sharding? I landed on single job because couldn't get cache to work properly for shards to be fast enough to worth it

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Re:Cargo-nextest: 3x faster than cargo test, per-test isolat... by sunshowers on Thursday July 09, 2026 @11:02AM (#48847101)

I think in practice you're right that GitHub Actions' caching slowness can end up dominating performance. I don't have any great tips other than to measure.

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Re:Cargo-nextest: 3x faster than cargo test, per-test isolat... by evntdrvn on Thursday July 09, 2026 @11:21AM (#48847442)

I've basically abandoned GA's caching for most things because measurements ended up showing things were slower with caching than without :woozy:

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