diff --git a/ptx/src/emit.rs b/ptx/src/emit.rs
index 7388203..e2d00d9 100644
--- a/ptx/src/emit.rs
+++ b/ptx/src/emit.rs
@@ -1337,9 +1337,6 @@ fn emit_int_trap(ctx: &mut EmitContext) -> Result<(), TranslateError> {
             0,
             LLVM_UNNAMED,
         );
-        // llvm.trap is not a terminator,
-        // LLVM might fail with an unterminated basic block if we don't insert unreachable
-        LLVMBuildUnreachable(builder);
     }
     Ok(())
 }
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index 3f1f224..d47659f 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -214,6 +214,7 @@ fn build_impl(is_debug: bool) -> Result<Workspace, DynError> {
     let workspace = Workspace::open(is_debug)?;
     let mut command = workspace.cargo_command();
     command.arg("build");
+    command.arg("--locked");
     workspace
         .projects
         .iter()