--- a/pylib/mozreview/mozreview/autoland/resources.py
+++ b/pylib/mozreview/mozreview/autoland/resources.py
@@ -98,17 +98,17 @@ class BaseAutolandTriggerResource(WebAPI
 
 class AutolandTriggerResource(BaseAutolandTriggerResource):
     """Resource to kick off Autoland to inbound for a particular review request."""
 
     name = 'autoland_trigger'
 
     @webapi_login_required
     @webapi_response_errors(DOES_NOT_EXIST, INVALID_FORM_DATA,
-                            NOT_LOGGED_IN, PERMISSION_DENIED)
+                            NOT_LOGGED_IN)
     @webapi_scm_groups_required('scm_level_3')
     @webapi_request_fields(
         required={
             'review_request_id': {
                 'type': int,
                 'description': 'The review request for which to trigger a Try '
                                'build',
             },
@@ -128,19 +128,16 @@ class AutolandTriggerResource(BaseAutola
             return DOES_NOT_EXIST
 
         if not is_pushed(rr) or not is_parent(rr):
             logging.error('Failed triggering Autoland because the review '
                           'request is not pushed, or not the parent review '
                           'request.')
             return NOT_PUSHED_PARENT_REVIEW_REQUEST
 
-        if not rr.is_mutable_by(request.user):
-            return PERMISSION_DENIED
-
         target_repository = rr.repository.extra_data.get(
             'landing_repository_url')
         push_bookmark = rr.repository.extra_data.get('landing_bookmark')
 
         if not target_repository:
             return AUTOLAND_CONFIGURATION_ERROR.with_message(
                 'Autoland has not been configured with a proper landing URL.')
 
@@ -240,17 +237,17 @@ autoland_trigger_resource = AutolandTrig
 
 class TryAutolandTriggerResource(BaseAutolandTriggerResource):
     """Resource to kick off Try Builds for a particular review request."""
 
     name = 'try_autoland_trigger'
 
     @webapi_login_required
     @webapi_response_errors(DOES_NOT_EXIST, INVALID_FORM_DATA,
-                            NOT_LOGGED_IN, PERMISSION_DENIED)
+                            NOT_LOGGED_IN)
     @webapi_scm_groups_required('scm_level_1')
     @webapi_request_fields(
         required={
             'review_request_id': {
                 'type': int,
                 'description': 'The review request for which to trigger a Try '
                                'build',
             },
@@ -276,19 +273,16 @@ class TryAutolandTriggerResource(BaseAut
             }
 
         if not is_pushed(rr) or not is_parent(rr):
             logging.error('Failed triggering Autoland because the review '
                           'request is not pushed, or not the parent review '
                           'request.')
             return NOT_PUSHED_PARENT_REVIEW_REQUEST
 
-        if not rr.is_mutable_by(request.user):
-            return PERMISSION_DENIED
-
         target_repository = rr.repository.extra_data.get(
             'try_repository_url')
 
         if not target_repository:
             return AUTOLAND_CONFIGURATION_ERROR.with_message(
                 'Autoland has not been configured with a proper try URL.')
 
         last_revision = json.loads(rr.extra_data.get('p2rb.commits'))[-1][0]
@@ -557,17 +551,17 @@ class ImportPullRequestTriggerResource(W
     def has_access_permissions(self, request, *args, **kwargs):
         return False
 
     def has_list_access_permissions(self, request, *args, **kwargs):
         return True
 
     @webapi_login_required
     @webapi_response_errors(DOES_NOT_EXIST, INVALID_FORM_DATA,
-                            NOT_LOGGED_IN, PERMISSION_DENIED)
+                            NOT_LOGGED_IN)
     @webapi_request_fields(
         required={
             'github_user': {
                 'type': six.text_type,
                 'description': 'The github user for the pullrequest',
             },
             'github_repo': {
                 'type': six.text_type,

--- a/pylib/mozreview/mozreview/static/mozreview/js/autoland.js
+++ b/pylib/mozreview/mozreview/static/mozreview/js/autoland.js
@@ -31,18 +31,16 @@
       )
       .show();
   }
 
   if (!MozReview.hasTryRepository) {
     try_trigger.attr('title', 'Try builds cannot be triggered for this repository');
   } else if ($("#draft-banner").is(":visible")) {
     try_trigger.attr('title', 'Try builds cannot be triggered on draft review requests');
-  } else if (!MozReview.currentIsMutableByUser) {
-    try_trigger.attr('title', 'Only the author may trigger a try build at this time');
   } else if (!MozReview.hasScmLevel1) {
     try_trigger.attr('title', 'You do not have the required scm level to trigger a try build');
   } else if (!MozReview.reviewRequestPending) {
     try_trigger.attr('title', 'You can not trigger a try build on a closed review request');
   } else {
     try_trigger.css('opacity', '1');
 
     $("#autoland-try-trigger").click(function() {
@@ -251,18 +249,16 @@
   }
 
   if (MozReview.landingRepository === '') {
     autoland_trigger.attr('title', 'Landing is not supported for this repository');
   } else if ($("#draft-banner").is(":visible")) {
     autoland_trigger.attr('title', 'Draft review requests cannot be landed');
   } else if (!MozReview.hasScmLevel3) {
     autoland_trigger.attr('title', 'You must have scm_level_3 access to land');
-  } else if (!MozReview.currentIsMutableByUser) {
-    autoland_trigger.attr('title', 'Only the author may land commits at this time');
   } else if (!MozReview.reviewRequestPending) {
     try_trigger.attr('title', 'You can not autoland from a closed review request');
   } else {
     MozReview.parentReviewRequest.ready({
       error: function () {
         autoland_trigger.attr('title', 'Error determining approval');
       },
       ready: function () {

--- a/pylib/mozreview/mozreview/tests/test-autoland-try.py
+++ b/pylib/mozreview/mozreview/tests/test-autoland-try.py
@@ -32,27 +32,34 @@ class AutolandTryTest(MozReviewWebDriver
 
             bb = self.user_bugzilla('mjane@example.com')
             bb.create_bug('TestProduct', 'TestComponent', 'First Bug')
 
             lr = self.create_basic_repo('mjane@example.com', 'mjane')
             lr.write('foo', 'first change')
             lr.run(['commit', '-m', 'Bug 1 - Test try'])
             lr.run(['push'])
+
+            # jsmith needs to push for the ldap association magic to happen
+            self.create_ldap(b'jsmith@example.com', b'jsmith', 2002, b'Jeremy')
+            lr = self.create_basic_repo('jsmith@example.com', 'jsmith',
+                                        'test_repo2')
+            lr.write('foo', 'first change')
+            lr.run(['commit', '-m', 'Bug 1 - Test try'])
+            lr.run(['push'])
         except Exception:
             MozReviewWebDriverTest.tearDownClass()
             raise
 
     def test_autoland_try(self):
         # We currently have four conditions for enabling the 'automation' menu
         # and try button (see static/mozreview/js/autoland.js):
         # 1. The review must be published
-        # 2. The review must be mutable by the current user
-        # 3. The user must have scm_level_1 or higher
-        # 4. The repository must have an associated try repository
+        # 2. The user must have scm_level_1 or higher
+        # 3. The repository must have an associated try repository
         # TODO: Ideally we'd test these conditions independently to ensure that
         #       the 'try' button will only show up when all four are met
         #       and not otherwise.
 
         # We should not be able to trigger a Try run without a HostingService
         # with an associated try repository.
         self.reviewboard_login('mjane@example.com', 'password2')
         self.load_rburl('r/1')
@@ -74,19 +81,62 @@ class AutolandTryTest(MozReviewWebDriver
         publish_btn = WebDriverWait(self.browser, 3).until(
             EC.visibility_of_element_located((By.ID,
             'btn-draft-publish')))
         publish_btn.click()
 
         WebDriverWait(self.browser, 10).until(
             EC.invisibility_of_element_located((By.ID, 'draft-banner')))
 
-        # Attempt to make intermittent failure with opacity of 'try' button
-        # less common. See Bug 1220733.
-        self.load_rburl('r/2')
+        automation_menu = self.browser.find_element_by_id('automation-menu')
+        automation_menu.click()
+        try_btn = self.browser.find_element_by_id('autoland-try-trigger')
+        self.assertEqual(
+            try_btn.value_of_css_property('opacity'), '1',
+            'Autoland to try should be enabled')
+
+        # Clicking the button should display a trychooser dialog
+        try_btn.click()
+        try_text = WebDriverWait(self.browser, 3).until(
+            EC.visibility_of_element_located((By.ID,
+            'mozreview-autoland-try-syntax')))
+        try_text.send_keys('try: stuff')
+        try_submit = self.browser.find_element_by_xpath('//input[@value="Submit"]')
+
+        # clicking the Submit button should display an activity indicator
+        try_submit.click()
+
+        element = WebDriverWait(self.browser, 10).until(
+            EC.visibility_of_element_located((By.ID, 'activity-indicator'))
+        )
+        try:
+            self.assertTrue('A server error occurred' not in element.text)
+        except StaleElementReferenceException:
+            # The activity indicator may already have disappeared by the time
+            # we check the text, but we want to be able to catch the server
+            # error if it shows up.
+            pass
+
+        # the try job should eventually create a new change description
+        WebDriverWait(self.browser, 10).until(
+            EC.visibility_of_element_located((By.CLASS_NAME, 'changedesc'))
+        )
+
+        time.sleep(10)
+        self.browser.refresh()
+        changedesc = self.browser.find_elements_by_class_name('changedesc')[1]
+        self.assertTrue('https://treeherder.mozilla.org/'
+            in changedesc.get_attribute('innerHTML'))
+
+        # We should not have closed the review automatically
+        with self.assertRaises(NoSuchElementException):
+            self.browser.find_element_by_id('submitted-banner')
+
+        # We should be able to trigger a Try run for another user.
+        self.reviewboard_login('jsmith@example.com', 'password1')
         self.load_rburl('r/1')
 
         automation_menu = self.browser.find_element_by_id('automation-menu')
         automation_menu.click()
         try_btn = self.browser.find_element_by_id('autoland-try-trigger')
         self.assertEqual(
             try_btn.value_of_css_property('opacity'), '1')
 
@@ -121,14 +171,8 @@ class AutolandTryTest(MozReviewWebDriver
         self.browser.refresh()
         changedesc = self.browser.find_elements_by_class_name('changedesc')[1]
         self.assertTrue('https://treeherder.mozilla.org/'
             in changedesc.get_attribute('innerHTML'))
 
         # We should not have closed the review automatically
         with self.assertRaises(NoSuchElementException):
             self.browser.find_element_by_id('submitted-banner')
-
-        # We should not be able to trigger a Try run for another user.
-        self.reviewboard_login('jsmith@example.com', 'password1')
-        self.load_rburl('r/1')
-        with self.assertRaises(NoSuchElementException):
-            self.browser.find_element_by_id('mozreview-autoland-try-trigger')