build.rs create hooks dir if not exists (#283)

build.rs

@@ -8,6 +8,9 @@ fn main() -> Result<()> {
     // Copy hooks to appropriate location so that git will run them.
     // In git worktrees, .git is a symlink and the following commands fail.
     if Path::new(".git").is_dir() {
+        if !Path::new("./.git/hooks").exists() {
+            std::fs::create_dir_all("./.git/hooks")?;
+        }
         std::fs::copy("./scripts/pre-commit", "./.git/hooks/pre-commit")?;
         std::fs::copy("./scripts/pre-push", "./.git/hooks/pre-push")?;
     }

src/scheduler.rs

@@ -386,6 +386,7 @@ pub struct Analyzer {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct Schedule {
     #[allow(unused)]
     pub scopes: BTreeMap<Ref<Query>, Scope>,