scripts/rust-libc: update config to work with current master #3675

Job	Run time
Compile sysdeps (dripos)	2m 27s
Compile sysdeps (lemon)	2m 8s
Build mlibc (x86_64, mlibc, gcc)	3m 13s
Build mlibc (x86_64, mlibc-static, gcc)	2m 44s
Compile sysdeps (aero)	2m 31s
Build mlibc (x86_64, mlibc-shared, gcc)	2m 41s
Compile sysdeps (ironclad)	2m 12s
Build mlibc (x86_64, mlibc-ansi-only, gcc)	2m 33s
Compile sysdeps (lyre)	2m 24s
Compile sysdeps (keyronex)	2m 9s
Build mlibc (x86_64, mlibc-headers-only, gcc)	1m 46s
Compile sysdeps (managarm)	2m 30s
Build mlibc (riscv64, mlibc, gcc)	3m 3s
Build mlibc (riscv64, mlibc-static, gcc)	4m 6s
Build mlibc (riscv64, mlibc-shared, gcc)	2m 46s
Build mlibc (riscv64, mlibc-ansi-only, gcc)	2m 28s
Build mlibc (riscv64, mlibc-headers-only, gcc)	1m 51s
Build mlibc (aarch64, mlibc, gcc)	3m 44s
Build mlibc (aarch64, mlibc-static, gcc)	2m 54s
Build mlibc (aarch64, mlibc-shared, gcc)	3m 9s
Build mlibc (aarch64, mlibc-ansi-only, gcc)	2m 44s
Build mlibc (aarch64, mlibc-headers-only, gcc)	1m 48s
Build mlibc (x86, mlibc, gcc)	3m 12s
Build mlibc (x86, mlibc-static, gcc)	2m 49s
Build mlibc (x86, mlibc-shared, gcc)	2m 50s
Build mlibc (x86, mlibc-ansi-only, gcc)	2m 44s
Build mlibc (x86, mlibc-headers-only, gcc)	1m 53s
Build mlibc (x86_64, mlibc, clang)	2m 39s
	1h 13m 58s

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