| Index: sdk/lib/_internal/pub/lib/src/command/build.dart | 
| diff --git a/sdk/lib/_internal/pub/lib/src/command/build.dart b/sdk/lib/_internal/pub/lib/src/command/build.dart | 
| index b8dee80c5291ceb1e7e621ae370b6432326a8925..b13e4d8bdb103e845d4df4542bb50b833ee19473 100644 | 
| --- a/sdk/lib/_internal/pub/lib/src/command/build.dart | 
| +++ b/sdk/lib/_internal/pub/lib/src/command/build.dart | 
| @@ -52,9 +52,7 @@ class BuildCommand extends PubCommand { | 
| var dart2jsTransformer; | 
| var builtFiles = 0; | 
|  | 
| -    return entrypoint.ensureLockFileIsUpToDate().then((_) { | 
| -      return entrypoint.loadPackageGraph(); | 
| -    }).then((graph) { | 
| +    return entrypoint.loadPackageGraph().then((graph) { | 
| dart2jsTransformer = new Dart2JSTransformer(graph, mode); | 
| var builtInTransformers = [ | 
| dart2jsTransformer, | 
|  |