Rollup of 10 pull requests

Successful merges:

 - #144359 (add codegen test for variadics)
 - #144409 (Stop compilation early if macro expansion failed)
 - #144422 (library/windows_targets: Fix macro expansion error in 'link' macro)
 - #144430 (tests: aarch64-outline-atomics: Remove hardcoded target)
 - #144445 (Fix `./x check bootstrap` (again))
 - #144453 (canonicalize build root in `tests/run-make/linker-warning`)
 - #144454 (move uefi test to run-make)
 - #144464 (Only run bootstrap tests in `x test` on CI)
 - #144495 (bump cargo_metadata)
 - #144500 (thread name in stack overflow message)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup of 9 pull requests

Successful merges:

 - #144359 (add codegen test for variadics)
 - #144409 (Stop compilation early if macro expansion failed)
 - #144422 (library/windows_targets: Fix macro expansion error in 'link' macro)
 - #144430 (tests: aarch64-outline-atomics: Remove hardcoded target)
 - #144445 (Fix `./x check bootstrap` (again))
 - #144453 (canonicalize build root in `tests/run-make/linker-warning`)
 - #144454 (move uefi test to run-make)
 - #144464 (Only run bootstrap tests in `x test` on CI)
 - #144495 (bump cargo_metadata)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup of 13 pull requests

Successful merges:

 - #144359 (add codegen test for variadics)
 - #144379 (test using multiple c-variadic ABIs in the same program)
 - #144383 (disable cfg.has_reliable_f128 on amdgcn)
 - #144409 (Stop compilation early if macro expansion failed)
 - #144422 (library/windows_targets: Fix macro expansion error in 'link' macro)
 - #144429 (Enable outline-atomics for aarch64-unknown-linux-musl)
 - #144430 (tests: aarch64-outline-atomics: Remove hardcoded target)
 - #144445 (Fix `./x check bootstrap` (again))
 - #144453 (canonicalize build root in `tests/run-make/linker-warning`)
 - #144464 (Only run bootstrap tests in `x test` on CI)
 - #144470 (clif: Don't set the `compiler-builtins-no-f16-f128` feature)
 - #144480 (Revert "coverage: Enlarge empty spans during MIR instrumentation, not codegen")
 - #144495 (bump cargo_metadata)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup of 13 pull requests

Successful merges:

 - #141840 (If `HOME` is empty, use the fallback instead)
 - #144359 (add codegen test for variadics)
 - #144379 (test using multiple c-variadic ABIs in the same program)
 - #144383 (disable cfg.has_reliable_f128 on amdgcn)
 - #144409 (Stop compilation early if macro expansion failed)
 - #144422 (library/windows_targets: Fix macro expansion error in 'link' macro)
 - #144429 (Enable outline-atomics for aarch64-unknown-linux-musl)
 - #144430 (tests: aarch64-outline-atomics: Remove hardcoded target)
 - #144445 (Fix `./x check bootstrap` (again))
 - #144453 (canonicalize build root in `tests/run-make/linker-warning`)
 - #144464 (Only run bootstrap tests in `x test` on CI)
 - #144470 (clif: Don't set the `compiler-builtins-no-f16-f128` feature)
 - #144480 (Revert "coverage: Enlarge empty spans during MIR instrumentation, not codegen")

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of #144464 - Kobzol:x-test-default, r=jieyouxu

Only run bootstrap tests in `x test` on CI

Discussed at https://rust-lang.zulipchat.com/#narrow/channel/122652-new-members/topic/Linux.20Distribution/with/530839642. The bootstrap tests can be sensitive of the environment where they are executed. And now that they are executed very early in the test pipeline, it can be annoying for people who just try to do `x test` when it fails on bootstrap tests.

We could move the bootstrap tests back to the end of the `x test` pipeline, but then it would just fail later. I'd prefer to only run them on CI by default.

Fixes: #143973