diff --git a/.gitignore b/.gitignore
index 4fd92fe..4d12f9d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /target
 .claude/settings.local.json
+tests/*.pending-snap
diff --git a/src/main.rs b/src/main.rs
index 66205ba..e261ad1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,7 +7,14 @@ use tabled::{builder::Builder, settings::Style};
 
 use codeowners::{explain_owners, get_diff, get_owners, GitRef};
 
-fn main() -> Result<()> {
+fn main() {
+    if let Err(e) = run() {
+        eprintln!("Error: {e}");
+        std::process::exit(1);
+    }
+}
+
+fn run() -> Result<()> {
     let cli = Cli::parse();
 
     match cli.command {
diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index 21c1bbd..3f2b24f 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -24,6 +24,12 @@ pub fn setup_repo(codeowners: &str, files: &[&str]) -> TempDir {
         .output()
         .unwrap();
 
+    Command::new("git")
+        .args(["config", "commit.gpgsign", "false"])
+        .current_dir(dir.path())
+        .output()
+        .unwrap();
+
     dir.child(".github/CODEOWNERS")
         .write_str(codeowners)
         .unwrap();