Improve swift-driver test cases to avoid fatal crash#1434

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cachemeifyoucan merged 2 commits intoswiftlang:mainfrom

cachemeifyoucan:eng/swift-driver-tests-fatal-errors

Sep 6, 2023

Commits on Sep 5, 2023

[Tests] Use `try` instead of `try!` in throwable context
cachemeifyoucan
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[Test] remove temp directory in `tearDown` instead of `deinit`
cachemeifyoucan
committed