rustdoc: Fixes with --test-run-directory and relative paths. #112751
Merged
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Fixes #112191
Fixes #112210
This fixes some issues with
--test-run-directory
and its interaction with--runtool
and--persist-doctests
. Relative directories don't work withCommand::current_dir
very well because it has platform-specific behavior with relative paths. This fixes it by avoiding the use of relative paths.This is needed because cargo is switching to use
--test-run-directory
, and it uses relative paths when interacting with rustdoc/rustc.