diff --git a/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php b/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php
--- a/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php
+++ b/src/applications/differential/conduit/DifferentialCreateDiffConduitAPIMethod.php
@@ -26,7 +26,6 @@
         'okay',
         'warn',
         'fail',
-        'postponed',
       ));
 
     return array(
@@ -95,9 +94,6 @@
       case 'fail':
         $lint_status = DifferentialLintStatus::LINT_FAIL;
         break;
-      case 'postponed':
-        $lint_status = DifferentialLintStatus::LINT_POSTPONED;
-        break;
       case 'none':
       default:
         $lint_status = DifferentialLintStatus::LINT_NONE;
@@ -117,9 +113,6 @@
       case 'fail':
         $unit_status = DifferentialUnitStatus::UNIT_FAIL;
         break;
-      case 'postponed':
-        $unit_status = DifferentialUnitStatus::UNIT_POSTPONED;
-        break;
       case 'none':
       default:
         $unit_status = DifferentialUnitStatus::UNIT_NONE;
diff --git a/src/applications/differential/constants/DifferentialLintStatus.php b/src/applications/differential/constants/DifferentialLintStatus.php
--- a/src/applications/differential/constants/DifferentialLintStatus.php
+++ b/src/applications/differential/constants/DifferentialLintStatus.php
@@ -2,12 +2,11 @@
 
 final class DifferentialLintStatus extends Phobject {
 
-  const LINT_NONE             = 0;
-  const LINT_OKAY             = 1;
-  const LINT_WARN             = 2;
-  const LINT_FAIL             = 3;
-  const LINT_SKIP             = 4;
-  const LINT_POSTPONED        = 5;
-  const LINT_AUTO_SKIP        = 6;
+  const LINT_NONE       = 0;
+  const LINT_OKAY       = 1;
+  const LINT_WARN       = 2;
+  const LINT_FAIL       = 3;
+  const LINT_SKIP       = 4;
+  const LINT_AUTO_SKIP  = 6;
 
 }
diff --git a/src/applications/differential/constants/DifferentialUnitStatus.php b/src/applications/differential/constants/DifferentialUnitStatus.php
--- a/src/applications/differential/constants/DifferentialUnitStatus.php
+++ b/src/applications/differential/constants/DifferentialUnitStatus.php
@@ -2,12 +2,11 @@
 
 final class DifferentialUnitStatus extends Phobject {
 
-  const UNIT_NONE             = 0;
-  const UNIT_OKAY             = 1;
-  const UNIT_WARN             = 2;
-  const UNIT_FAIL             = 3;
-  const UNIT_SKIP             = 4;
-  const UNIT_POSTPONED        = 5;
-  const UNIT_AUTO_SKIP        = 6;
+  const UNIT_NONE       = 0;
+  const UNIT_OKAY       = 1;
+  const UNIT_WARN       = 2;
+  const UNIT_FAIL       = 3;
+  const UNIT_SKIP       = 4;
+  const UNIT_AUTO_SKIP  = 6;
 
 }
diff --git a/src/applications/differential/constants/DifferentialUnitTestResult.php b/src/applications/differential/constants/DifferentialUnitTestResult.php
--- a/src/applications/differential/constants/DifferentialUnitTestResult.php
+++ b/src/applications/differential/constants/DifferentialUnitTestResult.php
@@ -2,11 +2,10 @@
 
 final class DifferentialUnitTestResult extends Phobject {
 
-  const RESULT_PASS         = 'pass';
-  const RESULT_FAIL         = 'fail';
-  const RESULT_SKIP         = 'skip';
-  const RESULT_BROKEN       = 'broken';
-  const RESULT_UNSOUND      = 'unsound';
-  const RESULT_POSTPONED    = 'postponed';
+  const RESULT_PASS     = 'pass';
+  const RESULT_FAIL     = 'fail';
+  const RESULT_SKIP     = 'skip';
+  const RESULT_BROKEN   = 'broken';
+  const RESULT_UNSOUND  = 'unsound';
 
 }
diff --git a/src/applications/differential/customfield/DifferentialLintField.php b/src/applications/differential/customfield/DifferentialLintField.php
--- a/src/applications/differential/customfield/DifferentialLintField.php
+++ b/src/applications/differential/customfield/DifferentialLintField.php
@@ -73,9 +73,6 @@
     if ($status == DifferentialLintStatus::LINT_SKIP) {
       $warnings[] = pht(
         'Lint was skipped when generating these changes.');
-    } else if ($status == DifferentialLintStatus::LINT_POSTPONED) {
-      $warnings[] = pht(
-        'Background linting has not finished executing on these changes.');
     } else {
       $warnings[] = pht('These changes have lint problems.');
     }
@@ -94,7 +91,6 @@
       DifferentialLintStatus::LINT_FAIL => 'red',
       DifferentialLintStatus::LINT_SKIP => 'blue',
       DifferentialLintStatus::LINT_AUTO_SKIP => 'blue',
-      DifferentialLintStatus::LINT_POSTPONED => 'blue',
     );
     $icon_color = idx($colors, $diff->getLintStatus(), 'grey');
 
diff --git a/src/applications/differential/customfield/DifferentialUnitField.php b/src/applications/differential/customfield/DifferentialUnitField.php
--- a/src/applications/differential/customfield/DifferentialUnitField.php
+++ b/src/applications/differential/customfield/DifferentialUnitField.php
@@ -84,9 +84,6 @@
       // Don't show any warnings.
     } else if ($status == DifferentialUnitStatus::UNIT_AUTO_SKIP) {
       // Don't show any warnings.
-    } else if ($status == DifferentialUnitStatus::UNIT_POSTPONED) {
-      $warnings[] = pht(
-        'Background tests have not finished executing on these changes.');
     } else if ($status == DifferentialUnitStatus::UNIT_SKIP) {
       $warnings[] = pht(
         'Unit tests were skipped when generating these changes.');
@@ -108,7 +105,6 @@
       DifferentialUnitStatus::UNIT_FAIL => 'red',
       DifferentialUnitStatus::UNIT_SKIP => 'blue',
       DifferentialUnitStatus::UNIT_AUTO_SKIP => 'blue',
-      DifferentialUnitStatus::UNIT_POSTPONED => 'blue',
     );
     $icon_color = idx($colors, $diff->getUnitStatus(), 'grey');
 
diff --git a/src/applications/differential/view/DifferentialRevisionUpdateHistoryView.php b/src/applications/differential/view/DifferentialRevisionUpdateHistoryView.php
--- a/src/applications/differential/view/DifferentialRevisionUpdateHistoryView.php
+++ b/src/applications/differential/view/DifferentialRevisionUpdateHistoryView.php
@@ -323,7 +323,6 @@
       DifferentialLintStatus::LINT_FAIL => self::STAR_FAIL,
       DifferentialLintStatus::LINT_SKIP => self::STAR_SKIP,
       DifferentialLintStatus::LINT_AUTO_SKIP => self::STAR_SKIP,
-      DifferentialLintStatus::LINT_POSTPONED => self::STAR_SKIP,
     );
 
     $star = idx($map, $diff->getLintStatus(), self::STAR_FAIL);
@@ -339,7 +338,6 @@
       DifferentialUnitStatus::UNIT_FAIL => self::STAR_FAIL,
       DifferentialUnitStatus::UNIT_SKIP => self::STAR_SKIP,
       DifferentialUnitStatus::UNIT_AUTO_SKIP => self::STAR_SKIP,
-      DifferentialUnitStatus::UNIT_POSTPONED => self::STAR_SKIP,
     );
 
     $star = idx($map, $diff->getUnitStatus(), self::STAR_FAIL);
@@ -361,8 +359,6 @@
         return pht('Lint Skipped');
       case DifferentialLintStatus::LINT_AUTO_SKIP:
         return pht('Automatic diff as part of commit; lint not applicable.');
-      case DifferentialLintStatus::LINT_POSTPONED:
-        return pht('Lint Postponed');
     }
     return pht('Unknown');
   }
@@ -382,8 +378,6 @@
       case DifferentialUnitStatus::UNIT_AUTO_SKIP:
         return pht(
           'Automatic diff as part of commit; unit tests not applicable.');
-      case DifferentialUnitStatus::UNIT_POSTPONED:
-        return pht('Unit Tests Postponed');
     }
     return pht('Unknown');
   }
diff --git a/src/applications/harbormaster/view/HarbormasterUnitPropertyView.php b/src/applications/harbormaster/view/HarbormasterUnitPropertyView.php
--- a/src/applications/harbormaster/view/HarbormasterUnitPropertyView.php
+++ b/src/applications/harbormaster/view/HarbormasterUnitPropertyView.php
@@ -88,7 +88,6 @@
       ArcanistUnitTestResult::RESULT_FAIL       => pht('Failed'),
       ArcanistUnitTestResult::RESULT_UNSOUND    => pht('Unsound'),
       ArcanistUnitTestResult::RESULT_SKIP       => pht('Skipped'),
-      ArcanistUnitTestResult::RESULT_POSTPONED  => pht('Postponed'),
       ArcanistUnitTestResult::RESULT_PASS       => pht('Passed'),
     );
     $result = idx($names, $result, $result);