Manual block encodings #3003

Job	Run time
Check MSRV	2m 56s
Check formatting	11s
Lint macOS 64bit	2m 32s
Lint iOS 32bit	2m 5s
Lint GNUStep + exceptions	1m 34s
Lint header-translator	30s
Lint test-assembly	24s
Test macOS 12	3m 21s
Verify header translator output	1m 18s
Assembly tests	51s
${{ matrix.name }}	0s
Check framework features	0s
Test Compiler-RT	22s
Test GNUStep with libobjc2 v1.9	1m 1s
Test on iOS simulator w. dinghy	0s
Compiler UI	1m 28s
Test GNUStep with libobjc2 v2.0	1m 12s
Test GNUStep with libobjc2 v2.1 on nightly	56s
Test GNUStep 32bit	1m 0s
	21m 41s

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