Change docker builds to include specific version of Rust (1.35.0)
diff --git a/build/docker/ubuntu-xenial/Dockerfile b/build/docker/ubuntu-xenial/Dockerfile
index 97aaaea..119d4cd 100644
--- a/build/docker/ubuntu-xenial/Dockerfile
+++ b/build/docker/ubuntu-xenial/Dockerfile
@@ -255,7 +255,7 @@
ruby-bundler
# Rust dependencies
-RUN curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain stable -y
+RUN curl https://sh.rustup.rs -sSf | sh -s -- --default-toolchain 1.35.0 -y
# Clean up
RUN rm -rf /var/cache/apt/* && \