Change docker builds to include specific version of Rust (1.35.0)
diff --git a/build/docker/README.md b/build/docker/README.md
index b65f74b..ce79985 100644
--- a/build/docker/README.md
+++ b/build/docker/README.md
@@ -192,6 +192,6 @@
| python | 2.7.12 | 2.7.15rc1 | |
| python3 | 3.5.2 | 3.6.7 | |
| ruby | 2.3.1p112 | 2.5.1p57 | |
-| rust | 1.30.0 | 1.30.0 | |
+| rust | 1.35.0 | 1.35.0 | |
| smalltalk | | | Not in CI |
| swift | | 4.2.1 | |
diff --git a/build/docker/ubuntu-bionic/Dockerfile b/build/docker/ubuntu-bionic/Dockerfile
index c8131bb..b508b1e 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -257,7 +257,7 @@
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
# Swift on Linux for cross tests
RUN cd / && \
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/* && \