diff --git a/.travis.yml b/.travis.yml
index d51ad24..12aebc1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,25 +1,24 @@
 sudo: false
 language: rust
 rust:
-- 1.31.0  # oldest supported version
 - stable
 - beta
 - nightly
 matrix:
   include:
   - env: RUSTFMT
-    rust: 1.31.0  # `stable`: Locking down for consistent behavior
+    rust: 1.35.0  # `stable`: Locking down for consistent behavior
     install:
       - rustup component add rustfmt
     script:
       - cargo fmt -- --check
   - env: RUSTFLAGS="-D warnings"
-    rust: 1.31.0  # `stable`: Locking down for consistent behavior
+    rust: 1.35.0  # `stable`: Locking down for consistent behavior
     install:
     script:
     - cargo check --tests
   - env: CLIPPY
-    rust: 1.31.0  # `stable`: Locking down for consistent behavior
+    rust: 1.35.0  # `stable`: Locking down for consistent behavior
     install:
       - rustup component add clippy
     script:
diff --git a/build.rs b/build.rs
index 8458fcb..143b5ce 100644
--- a/build.rs
+++ b/build.rs
@@ -24,6 +24,7 @@ fn main() {
     for record in &records {
         let value = format!(r#""{}""#, &record[1]);
         builder.entry(unicase::UniCase(&record[0]), &value);
+        break;
     }
     builder.build(&mut file).unwrap();
     write!(&mut file, ";\n").unwrap();