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c852cccaa5
This fixes the `symlink_and_directory` test which is failing on rust-lang/rust because it runs in a longer target directory name. This causes the path to exceed the limit of 100 characters for a USTAR tar header. The fix is to just use a directory from the `tempfile` crate instead of trying to create one inside the test sandbox. I believe this should be reliably under 100 characters. Unfortunately we cannot switch to GNU tar headers which dynamically switch to using GNU extensions for long paths because it would cause the package checksums to change based on whether or not the path causes it to exceed the limit. I double checked the old tar 0.4.44, and the test fails as expected.