diff --git a/.appveyor.yml b/.appveyor.yml
index 5bf1c9c5cc..3c9b5dd0e4 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,4 +1,4 @@
-# Copyright 2018 the Deno authors. All rights reserved. MIT license.
+# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 version: '{build}.{branch}'
 
 skip_branch_with_pr: true
diff --git a/.travis.yml b/.travis.yml
index 18e32a734d..50c0c13176 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-# Copyright 2018 the Deno authors. All rights reserved. MIT license.
+# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 sudo: false
 language: c++
 git:
diff --git a/libdeno/deno.gni b/libdeno/deno.gni
index 64869a284c..41627ea13a 100644
--- a/libdeno/deno.gni
+++ b/libdeno/deno.gni
@@ -1,4 +1,4 @@
-# Copyright 2018 the Deno authors. All rights reserved. MIT license.
+# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 import("//build/compiled_action.gni")
 
 template("run_node") {
diff --git a/src/isolate.rs b/src/isolate.rs
index 5100ac4907..7d1fdf71d1 100644
--- a/src/isolate.rs
+++ b/src/isolate.rs
@@ -28,6 +28,7 @@ use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::mpsc;
 use std::sync::Arc;
 use std::sync::Mutex;
+use std::sync::{Once, ONCE_INIT};
 use std::time::Duration;
 use std::time::Instant;
 use tokio;
@@ -156,7 +157,7 @@ pub struct Metrics {
   pub bytes_received: AtomicUsize,
 }
 
-static DENO_INIT: std::sync::Once = std::sync::ONCE_INIT;
+static DENO_INIT: Once = ONCE_INIT;
 
 impl Isolate {
   pub fn new(
diff --git a/tools/lint.py b/tools/lint.py
index 94b79739c3..4c38d3c69e 100755
--- a/tools/lint.py
+++ b/tools/lint.py
@@ -4,11 +4,10 @@
 
 import os
 import sys
-from util import enable_ansi_colors, run, find_exts
+from util import enable_ansi_colors, find_exts, root_path, run
 
 enable_ansi_colors()
 
-root_path = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
 third_party_path = os.path.join(root_path, "third_party")
 cpplint = os.path.join(third_party_path, "cpplint", "cpplint.py")
 tslint = os.path.join(third_party_path, "node_modules", "tslint", "bin",
diff --git a/tools/run_node.py b/tools/run_node.py
index 4023f7586f..f1221bcd4a 100755
--- a/tools/run_node.py
+++ b/tools/run_node.py
@@ -8,13 +8,12 @@ Before running node, we symlink js/node_modules to out/Debug/node_modules.
 import subprocess
 import sys
 import os
-import util
+from util import remove_and_symlink, root_path, run
 
-root_path = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
 tools_path = os.path.join(root_path, "tools")
 third_party_path = os.path.join(root_path, "third_party")
 target_abs = os.path.join(third_party_path, "node_modules")
 target_rel = os.path.relpath(target_abs)
 
-util.remove_and_symlink(target_rel, "node_modules", True)
-util.run(["node"] + sys.argv[1:], quiet=True)
+remove_and_symlink(target_rel, "node_modules", True)
+run(["node"] + sys.argv[1:], quiet=True)