Update: build.rs to have same formatting as rustfmt

.rustfmt.toml

@@ -1,3 +1,4 @@
+# When updating, also update `rust_format::Config` in `node/build.rs`
 indent_style = "Block"
 imports_granularity = "Crate"
 reorder_imports = true

node/build.rs

@@ -10,7 +10,7 @@ use std::{
 };
 
 use regex::Regex;
-use rust_format::Formatter;
+use rust_format::{Edition, Formatter};
 
 fn visit_dirs(dir: &PathBuf, cb: &mut dyn FnMut(&DirEntry)) -> io::Result<()> {
     if dir.is_dir() {
@@ -355,7 +355,15 @@ fn main() -> Result<(), Box<dyn Error>> {
 
     let tmp_path = PathBuf::from(std::env::var("OUT_DIR").unwrap()).join("action_kind.rs");
     fs::write(&tmp_path, contents)?;
-    rust_format::RustFmt::default()
+
+    // This should be same as `.rustfmt.toml`
+    let config = rust_format::Config::new_str()
+        .edition(Edition::Rust2021)
+        .option("indent_style", "Block")
+        .option("imports_granularity", "Crate")
+        .option("reorder_imports", "true");
+
+    rust_format::RustFmt::from_config(config)
         .format_file(&tmp_path)
         .expect("failed to format generated file");