2 files changed, 9 insertions, 8 deletions

diff --git a/tools/src/lib.rs b/tools/src/lib.rs
index 157818bdf..1b7ef3ca9 100644
--- a/tools/src/lib.rs
+++ b/tools/src/lib.rs
@@ -1,4 +1,6 @@
 extern crate itertools;
+
+use std::hash;
 use itertools::Itertools;
 
 #[derive(Debug, Eq)]
@@ -14,6 +16,12 @@ impl PartialEq for Test {
     }
 }
 
+impl hash::Hash for Test {
+    fn hash<H: hash::Hasher>(&self, state: &mut H) {
+        self.name.hash(state)
+    }
+}
+
 pub fn collect_tests(s: &str) -> Vec<Test> {
     let mut res = vec![];
     let prefix = "// ";
@@ -21,7 +29,7 @@ pub fn collect_tests(s: &str) -> Vec<Test> {
         .lines()
         .map(str::trim_left)
         .enumerate()
-        .group_by(|(idx, line)| line.starts_with(prefix));
+        .group_by(|(_idx, line)| line.starts_with(prefix));
 
     'outer: for (is_comment, block) in comment_blocks.into_iter() {
         if !is_comment {
diff --git a/tools/src/main.rs b/tools/src/main.rs
index 671f05388..783e3395b 100644
--- a/tools/src/main.rs
+++ b/tools/src/main.rs
@@ -96,13 +96,6 @@ fn gen_tests(verify: bool) -> Result<()> {
     Ok(())
 }
 
-
-impl ::std::hash::Hash for Test {
-    fn hash<H: ::std::hash::Hasher>(&self, state: &mut H) {
-        self.name.hash(state)
-    }
-}
-
 fn tests_from_dir(dir: &Path) -> Result<HashSet<Test>> {
     let mut res = HashSet::new();
     for entry in ::walkdir::WalkDir::new(dir) {