Don't lint needless_borrow in method receiver positions #8441 
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fixes #8408
fixes #8407
fixes #8391
fixes #8367
fixes #8380
This is a temporary fix for
needless_borrow. The proper fix is included in #8355.This should probably be merged into rustc before beta branches on Friday. This issue has been reported six or seven times in the past couple of weeks.
changelog: Fix various issues with
needless_borrown´. Note to changelog writer: those issues might have been introduced in this release cycle, so this might not matter in the changelog.