fix

src/main.rs

@@ -3,6 +3,7 @@ mod router;
 
 use crate::config::{Config, Schema};
 use crate::router::{Meta, Router, META_SIZE};
+use anyhow::anyhow;
 use anyhow::{Context, Result};
 use crossbeam::epoch::{pin, Owned};
 use crossbeam_utils::thread;
@@ -18,7 +19,7 @@ fn main() -> Result<()> {
     println!("Starting");
     let args: Vec<String> = env::args().collect();
     if args.len() < 2 {
-        return Err("need JSON string or -c <config.json>".into());
+        return Err(anyhow!("need JSON string or -c <config.json>"));
     }
 
     let config: Config;
@@ -26,7 +27,7 @@ fn main() -> Result<()> {
     if args[1] == "-c" || args[1] == "--config" {
         // 从文件读
         if args.len() < 3 {
-            return Err("missing value for -c/--config".into());
+            return Err(anyhow!("missing value for -c/--config"));
         }
         let data = fs::read_to_string(&args[2])?;
         config = serde_json::from_str(&data)?;