Support running miri in ci (#534)

* Support running miri in ci

* fail fast...

* wait miri is still not stable?

* clean up

* fmt

* Move to Dockerfile

ci/buildkite-pipeline.sh

@@ -143,6 +143,7 @@ all_test_steps() {
   command_step checks1 "ci/docker-run-default-image.sh ci/test-checks.sh" 20 check
   command_step checks2 "ci/docker-run-default-image.sh ci/test-dev-context-only-utils.sh check-bins" 15 check
   command_step checks3 "ci/docker-run-default-image.sh ci/test-dev-context-only-utils.sh check-all-targets" 15 check
+  command_step miri "ci/docker-run-default-image.sh ci/test-miri.sh" 5 check
   wait_step
 
   # Full test suite

ci/docker/Dockerfile

@@ -73,6 +73,7 @@ RUN \
   rustup install $RUST_NIGHTLY_VERSION && \
   rustup component add clippy --toolchain=$RUST_NIGHTLY_VERSION && \
   rustup component add rustfmt --toolchain=$RUST_NIGHTLY_VERSION && \
+  rustup component add miri --toolchain=$RUST_NIGHTLY_VERSION && \
   rustup target add wasm32-unknown-unknown && \
   cargo install cargo-audit && \
   cargo install cargo-hack && \

ci/test-miri.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+source ci/rust-version.sh nightly
+
+# miri is very slow; so only run very few of selective tests!
+cargo "+${rust_nightly}" miri test -p solana-program -- hash:: account_info::