Update mojo sdk to rev 1dc8a9a5db73d3718d99917fadf31f5fb2ebad4f

third_party/mojo/src/mojo/public/tools/git/dart_pub_get.py

Index: third_party/mojo/src/mojo/public/tools/git/dart_pub_get.py
diff --git a/third_party/mojo/src/mojo/public/tools/git/dart_pub_get.py b/third_party/mojo/src/mojo/public/tools/git/dart_pub_get.py
index a984de98d2e838c077e23bd9a2a56a3895aaeea3..f2b0ddc3b17896095ed2a2adf208847cf0d36eb9 100755
--- a/third_party/mojo/src/mojo/public/tools/git/dart_pub_get.py
+++ b/third_party/mojo/src/mojo/public/tools/git/dart_pub_get.py
@@ -24,10 +24,16 @@ def pub_get(dart_sdk_path, target_directory):
   # simultaneous builds in different repos stomping on each other.
   env = os.environ.copy()
   env["PUB_CACHE"] = os.path.join(os.getcwd(), "dart-pub-cache")
-  subprocess.check_output(cmd, shell=False,
-                          stderr=subprocess.STDOUT,
-                          cwd=target_directory,
-                          env=env)
+  try:
+      subprocess.check_output(cmd, shell=False,
+                              stderr=subprocess.STDOUT,
+                              cwd=target_directory,
+                              env=env)
+  except subprocess.CalledProcessError as e:
+    print('Error running pub get in %s' % target_directory)
+    print(e.output)
+    raise e
+
 
 
 def main(repository_root, dart_sdk_path, dirs_to_ignore):