Documentation for sqlx prepare for --all-targets is seemingly incorrect

[wimax-grapl]

Related:
#1665 which purported to close #1593
#637 which seems like, same symptoms, different root problem trying to be solved

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Hi. I have a codebase that has some sqlx queries in its lib, and some additional queries that are in its lib but hidden behind a cfg(test).

If I were to call:

DATABASE_URL="${DB_URL}" cargo sqlx prepare -- --all-targets --all-features

as suggested in this documentation
it results in

error: extra arguments to `rustc` can only be passed to one target, consider filtering
the package by passing, e.g., `--lib` or `--bin NAME` to specify a single target
error: `cargo check` failed with status: exit status: 101

This error is documented in #637; I'm opening a new ticket here because the documentation explicitly states that this case (multiple targets) should work, but it does not.

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My request:

• (if possible, just fix this feature)
• if it is indeed working as intended, could we add some sort of integration test proving that?
• if it is not working, could we remove that documentation saying it does?

[wimax-grapl]

i just put it behind a feature flag instead of cfg test