Update to Drupal 8.0.0-beta15. For more information, see: https://www.drupal.org/node/2563023

core/modules/taxonomy/migration_templates/d6_term_node.yml

@@ -2,6 +2,8 @@ id: d6_term_node
 label: Drupal 6 term/node relationships
 migration_tags:
   - Drupal 6
+builder:
+  plugin: d6_term_node
 load:
   plugin: d6_term_node
 
@@ -19,4 +21,4 @@ migration_dependencies:
   required:
     - d6_vocabulary_entity_display
     - d6_vocabulary_entity_form_display
-    - d6_node
+    - d6_node:*

core/modules/taxonomy/migration_templates/d6_term_node_revision.yml

@@ -2,6 +2,8 @@ id: d6_term_node_revision
 label: Drupal 6 term/node relationship revisions
 migration_tags:
   - Drupal 6
+builder:
+  plugin: d6_term_node
 load:
   plugin: d6_term_node
   bundle_migration: d6_vocabulary_field
@@ -18,5 +20,5 @@ destination:
   plugin: entity_revision:node
 migration_dependencies:
   required:
-    - d6_term_node
-    - d6_node_revision
+    - d6_term_node:*
+    - d6_node_revision:*

core/modules/taxonomy/migration_templates/d6_vocabulary_field.yml

@@ -13,9 +13,13 @@ process:
   entity_type: 'constants/entity_type'
   type: 'constants/type'
   field_name:
-    plugin: migration
-    migration: d6_taxonomy_vocabulary
-    source: vid
+    -
+      plugin: migration
+      migration: d6_taxonomy_vocabulary
+      source: vid
+    -
+      plugin: skip_on_empty
+      method: row
   'settings/target_type': 'constants/target_entity_type'
   cardinality: 'constants/cardinality'
 destination:

core/modules/taxonomy/migration_templates/d6_vocabulary_field_instance.yml

@@ -12,9 +12,13 @@ process:
   entity_type: 'constants/entity_type'
   bundle: type
   field_name:
-    plugin: migration
-    migration: d6_taxonomy_vocabulary
-    source: vid
+    -
+      plugin: migration
+      migration: d6_taxonomy_vocabulary
+      source: vid
+    -
+      plugin: skip_on_empty
+      method: row
   'settings/handler': 'constants/selection_handler'
   'settings/handler_settings/target_bundles/0': @field_name
   'settings/handler_settings/auto_create': 'constants/auto_create'