Writing `ProgramAst` into files #4076

Job	Run time
rustfmt	40s
Check Rust stable on ubuntu with --all-targets --no-default-features	1m 47s
no-std (stable, wasm32-unknown-unknown)	1m 34s
Check Rust stable on ubuntu with --all-targets	1m 21s
Clippy	53s
no-std (nightly, wasm32-unknown-unknown)	1m 10s
Check Rust stable on ubuntu with --all-targets --all-features	1m 11s
Check Rust nightly on ubuntu with --all-targets --no-default-features	1m 16s
Check Rust nightly on ubuntu with --all-targets	1m 26s
Test Rust nightly on windows-2022	0s
Test Rust stable on ubuntu with --profile test-release	8m 16s
Check Rust nightly on ubuntu with --all-targets --all-features	1m 10s
Test Rust stable on ubuntu with --profile test-release --doc	5m 48s
Test Rust nightly on ubuntu with --profile test-release	8m 24s
Test Rust nightly on ubuntu with --profile test-release --doc	4m 45s
	39m 41s

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