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1ed3cd7030
Split `run-make` into two {`run-make`,`run-make-cargo`} test suites
## Summary
Split `tests/run-make` into two test suites, to make it faster and more convenient for contributors to run run-make tests that do not need in-tree `cargo`.
| New test suites | Explanation |
| ---------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `tests/run-make` | The "fast path" test suite intended for run-make tests that do not need in-tree `cargo`. These tests may not use `cargo`. |
| `tests/run-make-cargo` | The "slow path" test suite that requires checking out `cargo` submodule and building in-tree `cargo`, and thus will have access to in-tree `cargo`. In practice, these constitute a very small portion of the original `run-make` tests. |
This PR carries out [MCP 847: Split run-make test suite into slower-building test suite with suitably-staged cargo and faster-building test suite without cargo](https://github.com/rust-lang/compiler-team/issues/847).
Fixes rust-lang/rust#135573 (for the tests that do not need in-tree `cargo`).
Fixes rust-lang/rust#134109.
## Remarks
- I considered if we want to split by in-tree tools previously. However, as discussed rust-lang/rust#134109, in practice `rustdoc` is not very slow to build, but `cargo` takes a good few minutes. So, the partition boundary was determined to be along in-tree `cargo` availability.
- The `run-make` tests previously that wanted to use `cargo` cannot just use the bootstrap `cargo`, otherwise they would run into situations where bootstrap `cargo` can significantly diverge from in-tree `cargo` (see https://github.com/rust-lang/rust/pull/130642).
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try-job: aarch64-msvc-1
try-job: test-various
try-job: x86_64-gnu-debug
try-job: aarch64-gnu-debug
try-job: aarch64-apple
try-job: dist-various-1