Auto merge of #11146 - hydro-project:tuple-array-conversions, r=Centri3,xFrednet
[`tuple_array_conversions`]: move from `complexity` to `nursery`
The lint suggestion is arguably often less readable and more complex than the original code.
For example, which of the following is the most readable:
```rust
let _vertices = edges.flat_map(|(src, dst)| [src, dst]);
let _vertices = edges.flat_map(<_ as Into<[i32; 2]>>::into);
let _vertices = edges.flat_map(<[i32; 2]>::from);
```
The lint can be useful, but really only applies if the tuple is either long enough that naming the fields is silly (maybe at least 4 entries long), or if the author intends the fields to be homogenous, which is author intent and can't be determined by the lint. Therefore I think the lint should be marked as pedantic.
Currently, there are also a lot of false positives with the lint:
* https://github.com/rust-lang/rust-clippy/issues/11082
* https://github.com/rust-lang/rust-clippy/issues/11085
* https://github.com/rust-lang/rust-clippy/issues/11100 (https://github.com/rust-lang/rust-clippy/pull/11105)
* https://github.com/rust-lang/rust-clippy/issues/11124
* https://github.com/rust-lang/rust-clippy/issues/11144
Should fix those issues before enabling it for everyone.
---
changelog: Move [`tuple_array_conversions`] to `nursery` (Now allow-by-default)
<!-- FIY: Ignore this change, if the commit gets backported -->
[#11146](https://github.com/rust-lang/rust-clippy/pull/11146)
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