diff --git a/build/build.yml b/build/build.yml
index dcbf499f8..1912b86bd 100644
--- a/build/build.yml
+++ b/build/build.yml
@@ -39,11 +39,6 @@ steps:
     verbose: false
     customCommand: 'install -g gulp-cli'
 
-- task: Gulp@0
-  displayName: 'gulp install'
-  inputs:
-    targets: install
-
 - bash: |
    export BUILDMACHINE=true
    export VsMsSqlEnv=dev
diff --git a/gulpfile.js b/gulpfile.js
index 30877500a..9cc3b8fe0 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -1,6 +1,5 @@
 var gulp = require('gulp');
 var rename = require('gulp-rename');
-var install = require('gulp-install');
 var gulpTsLint = require('gulp-tslint');
 var ts = require('gulp-typescript');
 var tslint = require('tslint');
@@ -256,8 +255,8 @@ gulp.task('ext:test', async () => {
             launchArgs: args
         });
     } catch (error) {
-        console.log(`stdout: ${stdout}`);
-        console.log(`stderr: ${stderr}`);
+        console.log(`stdout: ${process.stdout}`);
+        console.log(`stderr: ${process.stderr}`);
         console.error(`exec error: ${error}`);
         throw(error);
     }
@@ -273,13 +272,8 @@ gulp.task('clean', function (done) {
 
 gulp.task('build', gulp.series('clean', 'ext:build', 'ext:install-service'));
 
-gulp.task('install', function() {
-    return gulp.src(['./package.json'])
-                .pipe(install());
-});
-
 gulp.task('watch', function(){
     return gulp.watch(config.paths.project.root + '/src/**/*', gulp.series('build'))
 });
 
-// gulp.task('lint', gulp.series('ext:lint'));
+gulp.task('lint', gulp.series('ext:lint'));
diff --git a/install.js b/install.js
deleted file mode 100644
index 41e4d5328..000000000
--- a/install.js
+++ /dev/null
@@ -1,7 +0,0 @@
-var gulp = require('gulp');
-var install = require('gulp-install');
-
-gulp.task('install', function(){
-    return gulp.src(['./package.json'])
-                    .pipe(install());
-});
\ No newline at end of file