Fixes #2250; Error instead of panic when root directory or config fil…

…e not present (#2262)

src/main.rs

@@ -26,18 +26,27 @@ fn get_config_file_path(dir: &Path, config_path: &Path) -> (PathBuf, PathBuf) {
         std::process::exit(1);
     });
 
-    // if we got here we found root_dir so config file should exist so we can unwrap safely
-    let config_file = root_dir
-        .join(config_path)
-        .canonicalize()
-        .unwrap_or_else(|_| panic!("could not find directory containing config file"));
+    // if we got here we found root_dir so config file should exist so we could theoretically unwrap safely
+    let config_file_uncanonicalized = root_dir.join(config_path);
+    let config_file = config_file_uncanonicalized.canonicalize().unwrap_or_else(|e| {
+        messages::unravel_errors(
+            &format!("Could not find canonical path of {}", config_file_uncanonicalized.display()),
+            &e.into(),
+        );
+        std::process::exit(1);
+    });
+
     (root_dir.to_path_buf(), config_file)
 }
 
 fn main() {
     let cli = Cli::parse();
-    let cli_dir: PathBuf = cli.root.canonicalize().unwrap_or_else(|_| {
-        panic!("Could not find canonical path of root dir: {}", cli.root.display())
+    let cli_dir: PathBuf = cli.root.canonicalize().unwrap_or_else(|e| {
+        messages::unravel_errors(
+            &format!("Could not find canonical path of root dir: {}", cli.root.display()),
+            &e.into(),
+        );
+        std::process::exit(1);
     });
 
     match cli.command {