Split rustdoc test compilation and execution#4034
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This change introduces a new
RustdocTestCompileaction which takes advantage of the nightly rustc flag-Zunstable-options --persist-docteststo have rustdoc tests written to disk to be executed in a separate action, similar to a normalrust_testwhich first compiles the test and then executes it in a test action.To use this change a nightly toolchain is required and the use of
--@rules_rust//rust/settings:experimental_compile_rustdoc_tests=True.closes #1431