diff --git a/rustc-flags b/rustc-flags
index 05abeb6..3d617e3 100644
--- a/rustc-flags
+++ b/rustc-flags
@@ -1,4 +1,5 @@
 --deny=absolute_paths_not_starting_with_crate
+--deny=dead_code
 --deny=elided_lifetimes_in_paths
 --deny=explicit_outlives_requirements
 --deny=keyword_idents
@@ -25,6 +26,5 @@
 --deny=unused_lifetimes
 --deny=unused_macro_rules
 --deny=unused_qualifications
---deny=unused_tuple_struct_fields
 --deny=variant_size_differences
 --deny=warnings
diff --git a/treeedbgen-souffle-c/tests/main.rs b/treeedbgen-souffle-c/tests/main.rs
index 2192366..b3af339 100644
--- a/treeedbgen-souffle-c/tests/main.rs
+++ b/treeedbgen-souffle-c/tests/main.rs
@@ -5,7 +5,7 @@ use predicates::prelude::*;
 use tempfile::NamedTempFile;
 
 #[test]
-fn gen() -> Result<(), Box<dyn std::error::Error>> {
+fn test_gen() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("treeedbgen-souffle-c")?;
     let tmp = NamedTempFile::new()?;
     cmd.arg("-o").arg(tmp.path());
diff --git a/treeedbgen-souffle-csharp/tests/main.rs b/treeedbgen-souffle-csharp/tests/main.rs
index 3a735b4..dbdae7c 100644
--- a/treeedbgen-souffle-csharp/tests/main.rs
+++ b/treeedbgen-souffle-csharp/tests/main.rs
@@ -5,7 +5,7 @@ use predicates::prelude::*;
 use tempfile::NamedTempFile;
 
 #[test]
-fn gen() -> Result<(), Box<dyn std::error::Error>> {
+fn test_gen() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("treeedbgen-souffle-csharp")?;
     let tmp = NamedTempFile::new()?;
     cmd.arg("-o").arg(tmp.path());
diff --git a/treeedbgen-souffle-java/tests/main.rs b/treeedbgen-souffle-java/tests/main.rs
index 9ebcf0b..463579c 100644
--- a/treeedbgen-souffle-java/tests/main.rs
+++ b/treeedbgen-souffle-java/tests/main.rs
@@ -5,7 +5,7 @@ use predicates::prelude::*;
 use tempfile::NamedTempFile;
 
 #[test]
-fn gen() -> Result<(), Box<dyn std::error::Error>> {
+fn test_gen() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("treeedbgen-souffle-java")?;
     let tmp = NamedTempFile::new()?;
     cmd.arg("-o").arg(tmp.path());
diff --git a/treeedbgen-souffle-javascript/tests/main.rs b/treeedbgen-souffle-javascript/tests/main.rs
index fda84f2..f29a35d 100644
--- a/treeedbgen-souffle-javascript/tests/main.rs
+++ b/treeedbgen-souffle-javascript/tests/main.rs
@@ -5,7 +5,7 @@ use predicates::prelude::*;
 use tempfile::NamedTempFile;
 
 #[test]
-fn gen() -> Result<(), Box<dyn std::error::Error>> {
+fn test_gen() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("treeedbgen-souffle-javascript")?;
     let tmp = NamedTempFile::new()?;
     cmd.arg("-o").arg(tmp.path());
diff --git a/treeedbgen-souffle-rust/tests/main.rs b/treeedbgen-souffle-rust/tests/main.rs
index b60b4d3..8b7b314 100644
--- a/treeedbgen-souffle-rust/tests/main.rs
+++ b/treeedbgen-souffle-rust/tests/main.rs
@@ -5,7 +5,7 @@ use predicates::prelude::*;
 use tempfile::NamedTempFile;
 
 #[test]
-fn gen() -> Result<(), Box<dyn std::error::Error>> {
+fn test_gen() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("treeedbgen-souffle-rust")?;
     let tmp = NamedTempFile::new()?;
     cmd.arg("-o").arg(tmp.path());
diff --git a/treeedbgen-souffle-souffle/tests/main.rs b/treeedbgen-souffle-souffle/tests/main.rs
index 66a11e4..5bc435b 100644
--- a/treeedbgen-souffle-souffle/tests/main.rs
+++ b/treeedbgen-souffle-souffle/tests/main.rs
@@ -5,7 +5,7 @@ use predicates::prelude::*;
 use tempfile::NamedTempFile;
 
 #[test]
-fn gen() -> Result<(), Box<dyn std::error::Error>> {
+fn test_gen() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("treeedbgen-souffle-souffle")?;
     let tmp = NamedTempFile::new()?;
     cmd.arg("-o").arg(tmp.path());
diff --git a/treeedbgen-souffle-swift/tests/main.rs b/treeedbgen-souffle-swift/tests/main.rs
index 4377ad0..69e4cdc 100644
--- a/treeedbgen-souffle-swift/tests/main.rs
+++ b/treeedbgen-souffle-swift/tests/main.rs
@@ -5,7 +5,7 @@ use predicates::prelude::*;
 use tempfile::NamedTempFile;
 
 #[test]
-fn gen() -> Result<(), Box<dyn std::error::Error>> {
+fn test_gen() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("treeedbgen-souffle-swift")?;
     let tmp = NamedTempFile::new()?;
     cmd.arg("-o").arg(tmp.path());
diff --git a/treeedbgen-souffle/src/cli.rs b/treeedbgen-souffle/src/cli.rs
index 44ca939..5e2e832 100644
--- a/treeedbgen-souffle/src/cli.rs
+++ b/treeedbgen-souffle/src/cli.rs
@@ -27,12 +27,12 @@ pub fn main(node_types: &str) -> Result<()> {
     if let Some(path) = args.output {
         let mut file = std::fs::File::create(&path)
             .with_context(|| format!("Failed to write to file {}", path))?;
-        super::gen(&config, &mut file, node_types)?;
+        super::r#gen(&config, &mut file, node_types)?;
     } else {
         // https://nnethercote.github.io/perf-book/io.html#locking
         let stdout = std::io::stdout();
         let mut lock = stdout.lock();
-        super::gen(&config, &mut lock, node_types)?;
+        super::r#gen(&config, &mut lock, node_types)?;
     }
     Ok(())
 }
diff --git a/treeedbgen-souffle/src/gen.rs b/treeedbgen-souffle/src/gen.rs
index 4148786..c146ab1 100644
--- a/treeedbgen-souffle/src/gen.rs
+++ b/treeedbgen-souffle/src/gen.rs
@@ -305,7 +305,7 @@ fn declare_child(config: &PrivGenConfig, w: &mut impl Write) -> Result<(), GenEr
     Ok(())
 }
 
-pub fn gen(
+pub fn r#gen(
     config: &GenConfig,
     w: &mut impl Write,
     node_types_json_str: &str,
diff --git a/treeedbgen-souffle/src/lib.rs b/treeedbgen-souffle/src/lib.rs
index 48dd177..9913ceb 100644
--- a/treeedbgen-souffle/src/lib.rs
+++ b/treeedbgen-souffle/src/lib.rs
@@ -1,5 +1,5 @@
-mod gen;
-pub use gen::*;
+mod r#gen;
+pub use r#gen::*;
 
 #[cfg(feature = "cli")]
 pub mod cli;