3 files changed, 6 insertions, 5 deletions

diff --git a/crates/tools/src/bin/pre-commit.rs b/crates/tools/src/bin/pre-commit.rs
index ca1909479..bae3b26d3 100644
--- a/crates/tools/src/bin/pre-commit.rs
+++ b/crates/tools/src/bin/pre-commit.rs
@@ -14,13 +14,14 @@ fn update_staged() -> Result<()> {
     let root = project_root();
     let output = Command::new("git")
         .arg("diff")
+        .arg("--diff-filter=MAR")
         .arg("--name-only")
         .arg("--cached")
         .current_dir(&root)
         .output()?;
     if !output.status.success() {
         bail!(
-            "`git diff --name-only --cached` exited with {}",
+            "`git diff --diff-filter=MAR --name-only --cached` exited with {}",
             output.status
         );
     }
diff --git a/crates/tools/src/lib.rs b/crates/tools/src/lib.rs
index 6d4ac4726..580d8b802 100644
--- a/crates/tools/src/lib.rs
+++ b/crates/tools/src/lib.rs
@@ -47,7 +47,7 @@ pub fn collect_tests(s: &str) -> Vec<(usize, Test)> {
                 }
                 Some((idx, line)) if line.starts_with("test_err ") => {
                     ok = false;
-                    break (idx, line["test_fail ".len()..].to_string());
+                    break (idx, line["test_err ".len()..].to_string());
                 }
                 Some(_) => (),
                 None => continue 'outer,
diff --git a/crates/tools/src/main.rs b/crates/tools/src/main.rs
index 08b21f7af..0e54cadda 100644
--- a/crates/tools/src/main.rs
+++ b/crates/tools/src/main.rs
@@ -54,13 +54,13 @@ fn gen_tests(mode: Mode) -> Result<()> {
         if !tests_dir.is_dir() {
             fs::create_dir_all(&tests_dir)?;
         }
-        // ok is never is actually read, but it needs to be specified to create a Test in existing_tests
+        // ok is never actually read, but it needs to be specified to create a Test in existing_tests
         let existing = existing_tests(&tests_dir, true)?;
         for t in existing.keys().filter(|&t| !tests.contains_key(t)) {
-            panic!("Test is deleted: {}", t);
+            // panic!("Test is deleted: {}", t);
         }
 
-        let mut new_idx = existing.len() + 2;
+        let mut new_idx = existing.len() + 1;
         for (name, test) in tests {
             let path = match existing.get(name) {
                 Some((path, _test)) => path.clone(),