Make sure to also wrap the initial -vV invocation

[oli-obk]

fixes #10885

This one is fairly annoying to test, as it happens before the usual cargo logic (which is also the reason it was forgotten to get wrapped).

[rust-highfive]

r? @ehuss

(rust-highfive has picked a reviewer for you, use r? to override)

[ehuss]

For testing, I think it should be sufficient to modify the rustc_wrapper test to check the target/.rustc_info.json. Just load it in a serde_json::Value, and then iterate over the "outputs" and look for one that says WRAPPER CALLED: rustc -vV in the "stderr" value.

This change seems moderately risky to me, because existing RUSTC_WRAPPERs may not be expecting this. Can you check if tools like sccache will not be affected? Presumably you've tested this with miri?

[oli-obk]

This change seems moderately risky to me, because existing RUSTC_WRAPPERs may not be expecting this. Can you check if tools like sccache will not be affected? Presumably you've tested this with miri?

I have not tested this change at all :/ Considering it's a risky change and no on else seems to run afoul of this, and miri doesn't actually need it, I'm going to close it