Update nightly Rust version #3086

Job	Run time
Check formatting	10s
Check MSRV	1m 2s
Lint macOS 64bit	2m 26s
Lint iOS 32bit	2m 11s
Lint GNUStep + exceptions	1m 29s
Lint header-translator	31s
Lint test-assembly	27s
Test macOS 12	2m 56s
Verify header translator output	54s
Assembly tests	3m 24s
Test macOS 13	4m 13s
Check framework features	12m 23s
Test macOS 14	2m 30s
Test Compiler-RT	20s
Build macOS AArch64	2m 23s
Test GNUStep with libobjc2 v1.9	3m 26s
Test macOS old SDK	2m 3s
Test on iOS simulator w. dinghy	9m 35s
Test GNUStep with libobjc2 v2.0	3m 2s
Compiler UI	1m 14s
Test macOS nightly	3m 13s
Test GNUStep with libobjc2 v2.1 on nightly	1m 37s
Build macOS 32bit	5m 16s
Test GNUStep 32bit	1m 15s
Build iOS simulator ARM64	2m 7s
Build iOS ARM64	2m 11s
Build iOS ARMv7s	3m 17s
Build iOS 32bit x86	3m 27s
	1h 19m 2s

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