perf: Lazy load files from directory (#335)

Changes context to use `once_cell` to lazily evaluate directory listing on first use.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/modules/rust.rs b/src/modules/rust.rs
index 26ee377c9..2008a539d 100644
--- a/src/modules/rust.rs
+++ b/src/modules/rust.rs
@@ -10,10 +10,10 @@ use super::{Context, Module};
 ///     - Current directory contains a `Cargo.toml` file
 pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
     let is_rs_project = context
-        .new_scan_dir()
+        .try_begin_scan()?
         .set_files(&["Cargo.toml"])
         .set_extensions(&["rs"])
-        .scan();
+        .is_match();
 
     if !is_rs_project {
         return None;