Configure rust-analyzer to show errors from multiple separate build configurations

[BatmanAoD]

I'm guessing this isn't currently supported, but I want to see if it's a reasonable feature request: could rust-analyzer be configured to report errors for multiple build configurations? As far as I can tell, with VSCode, you can configure a specific set of features for rust-analyzer to take into consideration, but sometimes you need to support multiple different incompatible feature-sets, build profiles, or targets. So it would be nice to be able to get errors reported for all of those, just as you'd get from using cargo hack. (In my case I'd rather explicitly specify a small set of "valid" configurations, rather than relying on hack to generate a powerset of features.)

[ChayimFriedman2]

It is maybe possible to make it work for check-on-save, although I'm not keen of that option. It is not possible to support this for r-a's native analysis.