Turn `record` into `struct` #2703

Job	Run time
check_format	1m 42s
x86_64-gnu-test (1.7.3)	37m 15s
x86_64-gnu-test (1.8.2)	34m 50s
x86_64-gnu-test-preview_mt	5m 33s
x86_64-musl-test	39m 34s
x86_64-gnu-test (1.9.2)	35m 19s
x86_64-gnu-test (1.10.1)	35m 3s
x86_64-gnu-test (1.11.2)	36m 41s
x86_64-gnu-test (1.12.2)	34m 21s
x86_64-gnu-test (1.13.3)	37m 45s
x86_64-gnu-test (1.14.0)	34m 16s
x86_64-gnu-test (1.0.0, FLAGS=-Dwithout_ffi USE_PCRE1=true)	34m 20s
x86_64-gnu-test (1.1.1, FLAGS=-Dwithout_ffi USE_PCRE1=true)	36m 21s
x86_64-gnu-test (1.2.2, USE_PCRE1=true)	35m 31s
x86_64-gnu-test (1.3.2, USE_PCRE1=true)	38m 59s
x86_64-gnu-test (1.4.1, USE_PCRE1=true)	35m 58s
x86_64-gnu-test (1.5.1, USE_PCRE1=true)	36m 43s
x86_64-gnu-test (1.6.2, USE_PCRE1=true)	35m 54s
	9h 46m 5s

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