diff --git a/Cargo.toml b/Cargo.toml
index 70afdf0..4e1275a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,6 +15,10 @@ threads = ["tokio/rt-threaded"]
 # Use base64 encoding of pathnames instead of SHA256. This can increase speed of database rebuilding, but can also cause files with large pathnames to fail.
 fast-pathnames = ["base64"]
 
+# Use low-precision argument dedup (64-bit) instead of high (unimplemented)
+#
+# Currently does nothing as this is the default and only implemented one.
+low-prec-arg-dedup = []
 
 [dependencies]
 tokio = {version = "0.2", features=["full"]}
diff --git a/src/dedup.rs b/src/dedup.rs
index d3fe966..5a46a3f 100644
--- a/src/dedup.rs
+++ b/src/dedup.rs
@@ -12,6 +12,8 @@ use std::{
 };
 use smallmap::Map;
 
+//TODO: Use SHA256 or 512 when not using feature flag `low-prec-arg-dedup`.
+//This will produce more false-positives as it it now.
 fn compute_hash_single<T: Hash>(value: &T) -> u64
 {
     let mut hasher = std::collections::hash_map::DefaultHasher::new();
diff --git a/src/delete.rs b/src/delete.rs
index b311592..5fb54dc 100644
--- a/src/delete.rs
+++ b/src/delete.rs
@@ -11,7 +11,6 @@ use super::*;
 use std::{
     path::{
 	Path,
-	PathBuf,
     },
 };
 
diff --git a/src/main.rs b/src/main.rs
index 8a35a98..faced7e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -52,15 +52,20 @@ type Pointer = *const Never;
 
 fn install() -> eyre::Result<()>
 {
+    pretty_env_logger::init();
     color_eyre::install()?;
 
     Ok(())
 }
 
 /// Process a path for deletion
+///
+/// Currently a mock impl
 async fn process(state: Arc<state::State>, file: String)
 {
     let config = state.config();
+    let _g = state.lock().await;
+    
     println!(" -> {:?}", file);
     let dbdir = resolve::mangle_path(&config, &file);
     println!("Database path for this file {:?}", dbdir);
@@ -85,7 +90,7 @@ async fn begin() -> eyre::Result<i32>
 {
     install()?;
     let state = Arc::new(state::State::new(validate_config(config::Config::default()).await
-			  .wrap_err(eyre!("Failed to validate config"))?));
+					   .wrap_err(eyre!("Failed to validate config"))?));
     info!("Validated config OK");
     if args::process(|file| {
 	let state = Arc::clone(&state);
@@ -103,7 +108,6 @@ async fn begin() -> eyre::Result<i32>
 #[tokio::main]
 async fn main() -> eyre::Result<()>
 {
-    pretty_env_logger::init();
     std::process::exit(match begin().await {
 	Ok(0) => return Ok(()),
 	Err(err) => {