Always check diff after assembly job #2120

Job	Run time
Check formatting	8s
Lint macOS 64bit	5m 53s
Lint iOS 32bit	1m 10s
Lint GNUStep + exceptions	2m 17s
Lint header-translator	32s
Lint test-assembly	38s
Check MSRV	1m 51s
Test macOS 12	1s
Compiler UI	1s
Assembly tests	1m 3s
Check icrate features	1s
Verify header translator output	1s
Test macOS 11	1s
Build macOS AArch64	1s
Test macOS old SDK	1s
Test macOS nightly	1s
Build macOS 32bit	1s
Build iOS simulator ARM64	1s
Build iOS ARM64	1s
Build iOS ARMv7	1s
Build iOS ARMv7s	1s
Build iOS 32bit x86	1s
Test Compiler-RT	24s
Test on iOS simulator w. dinghy	1s
Test GNUStep with libobjc2 v1.9	8m 30s
Test GNUStep with libobjc2 v2.0	6m 32s
Test GNUStep with libobjc2 v2.1 on nightly	7m 42s
Test GNUStep 32bit	7m 31s
	44m 26s

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