diff --git a/Builder/scripts/docker-builder-backend.sh b/Builder/scripts/docker-builder-backend.sh
index ce7aab5..efe738e 100755
--- a/Builder/scripts/docker-builder-backend.sh
+++ b/Builder/scripts/docker-builder-backend.sh
@@ -56,9 +56,9 @@ docker ${DEBUG_FLAG} push localhost:5000/docker_image:latest &>"$OUT_FD"
 export SINGULARITY_CACHEDIR=/home/builder/.singularity
 export SINGULARITY_NOHTTPS=true
 export SINGULARITY_PULLFOLDER=/home/builder
-singularity ${DEBUG_FLAG} pull --name container.simg docker://localhost:5000/docker_image:latest
+singularity ${DEBUG_FLAG} pull --name container.simg docker://localhost:5000/docker_image:latest >&${OUT_FD}
 
 # Workaround for PULLFOLDER not being respected: https://github.com/singularityware/singularity/pull/855
 if [ -e ${SINGULARITY_CACHEDIR}/container.simg ] ; then
-    mv ${SINGULARITY_CACHEDIR}/container.simg ./container.simg
+    mv ${SINGULARITY_CACHEDIR}/container.simg ./container.simg >&${OUT_FD}
 fi
\ No newline at end of file
diff --git a/BuilderQueue/include/BuilderQueue.h b/BuilderQueue/include/BuilderQueue.h
index 5e7a334..5660bae 100644
--- a/BuilderQueue/include/BuilderQueue.h
+++ b/BuilderQueue/include/BuilderQueue.h
@@ -18,7 +18,7 @@ class BuilderQueue {
 public:
     explicit BuilderQueue(asio::io_context &io_context) : io_context(io_context),
                                                           max_builder_count(20),
-                                                          max_reserve_builder_count(5),
+                                                          max_reserve_builder_count(20),
                                                           outstanding_create_count(0) {
         create_reserve_builders();
     }
diff --git a/Deployment/deploy-summitdev.sh b/Deployment/deploy-summitdev.sh
index 8d919d4..4aba853 100755
--- a/Deployment/deploy-summitdev.sh
+++ b/Deployment/deploy-summitdev.sh
@@ -26,7 +26,7 @@ rm -rf boost_build && mkdir boost_build && cd boost_build
 curl -L https://dl.bintray.com/boostorg/release/1.66.0/source/boost_1_66_0.tar.gz -O
 tar xf boost_1_66_0.tar.gz
 cd boost_1_66_0
-./bootstrap.sh --with-libraries=filesystem,regex,system,serialization,thread,program_options --prefix=${SW_ROOT}
+./bootstrap.sh --with-libraries=filesystem,regex,system,serialization,thread,program_options --prefix=${SW_ROOT} --with-toolset=gcc
 ./b2 install || :
 rm -rf /boost_1_66_0