Upgrade to rust 1.38

README.md

@@ -78,7 +78,7 @@ $ source $HOME/.cargo/env
 $ rustup component add rustfmt
 ```
 
-If your rustc version is lower than 1.37.0, please update it:
+If your rustc version is lower than 1.38.0, please update it:
 
 ```bash
 $ rustup update

ci/docker-rust/Dockerfile

@@ -1,6 +1,6 @@
 # Note: when the rust version is changed also modify
 # ci/rust-version.sh to pick up the new image tag
-FROM rust:1.37.0
+FROM rust:1.38.0
 
 # Add Google Protocol Buffers for Libra's metrics library.
 ENV PROTOC_VERSION 3.8.0

ci/rust-version.sh

@@ -13,8 +13,8 @@
 #   $ source ci/rust-version.sh
 #
 
-stable_version=1.37.0
-nightly_version=2019-08-21
+stable_version=1.38.0
+nightly_version=2019-09-25
 
 export rust_stable="$stable_version"
 export rust_stable_docker_image=solanalabs/rust:"$stable_version"

crate-features/README.md

@@ -36,7 +36,7 @@ This information is not readily available from the stock `cargo` program, so use
 the following steps to produce a custom `cargo` program that will output the
 necessary feature information to stderr during a build:
 ```bash
-$ git clone git@github.com:rust-lang/cargo.git -b rust-1.37.0
+$ git clone git@github.com:rust-lang/cargo.git -b rust-1.38.0
 $ cd cargo
 $ git apply 0001-Print-package-features.patch
 $ cargo build