Delete the stage1 and stage0-sysroot directories when using download-rustc#102025

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bors merged 2 commits intorust-lang:masterfrom

chenyukang:fix-102002

Oct 7, 2022

Commits on Sep 19, 2022

fix #102002, Delete the stage1 and stage0-sysroot directories when using download-rustc
chenyukang
committed

Commits on Oct 4, 2022

use ci-rustc-sysroot for sysroot when download_rustc
chenyukang
committed