Automated daily update to rustc (to nightly-2026-05-21) #693

Job	Run time
Test - msrv toolchain (recent)	1m 41s
Cross test	1m 30s
Lint - nightly toolchain	1m 34s
Test - stable toolchain (recent)	7m 5s
Bench - nightly toolchain	1m 57s
Test 32-bit version	48s
Check WASM	52s
Docs - stable toolchain	1m 36s
Docs - nightly toolchain	1m 32s
Test - nightly toolchain (recent)	6m 11s
	24m 46s

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