Add --verbose to dart pub get command

templates/tools/dockerfile/interoptest/grpc_interop_dart/build_interop.sh.template

@@ -16,7 +16,7 @@
   # limitations under the License.
   #
   # Builds Dart interop server and client in a base image.
-  set -e
+  set -ex
 
   mkdir -p /var/local/git
   git clone /var/local/jenkins/grpc-dart /var/local/git/grpc-dart
@@ -25,4 +25,4 @@
   cp -r /var/local/jenkins/service_account $HOME || true
 
   cd /var/local/git/grpc-dart/interop
-  /usr/lib/dart/bin/pub get
+  /usr/lib/dart/bin/pub get --verbose

tools/dockerfile/interoptest/grpc_interop_dart/build_interop.sh

@@ -14,7 +14,7 @@
 # limitations under the License.
 #
 # Builds Dart interop server and client in a base image.
-set -e
+set -ex
 
 mkdir -p /var/local/git
 git clone /var/local/jenkins/grpc-dart /var/local/git/grpc-dart
@@ -23,4 +23,4 @@ git clone /var/local/jenkins/grpc-dart /var/local/git/grpc-dart
 cp -r /var/local/jenkins/service_account $HOME || true
 
 cd /var/local/git/grpc-dart/interop
-/usr/lib/dart/bin/pub get
+/usr/lib/dart/bin/pub get --verbose