don't fail on fresh install

migrations/1509439657189-add_machine_name_to_devices.js

@@ -10,6 +10,14 @@ exports.up = function (next) {
       'alter table devices alter column name set not null'
     ]
 
+    return db.multi(sql, next)
+  })
+  .catch(() => {
+    const sql = [
+      'alter table devices add column name text',
+      'alter table devices alter column name set not null'
+    ]
+
     return db.multi(sql, next)
   })
 }