Check the whole range of commits in the topic branch (bp #10560) (#10563)

automerge

ci/buildkite.yml

@@ -5,6 +5,9 @@
 # Release tags use buildkite-release.yml instead
 
 steps:
+  - command: "ci/test-sanity.sh"
+    name: "sanity"
+    timeout_in_minutes: 5
   - command: ". ci/rust-version.sh; ci/docker-run.sh $$rust_nightly_docker_image ci/test-checks.sh"
     name: "checks"
     timeout_in_minutes: 20

ci/test-checks.sh

@@ -10,9 +10,6 @@ source ci/rust-version.sh nightly
 export RUST_BACKTRACE=1
 export RUSTFLAGS="-D warnings"
 
-# Look for failed mergify.io backports
-_ git show HEAD --check --oneline
-
 _ cargo +"$rust_stable" fmt --all -- --check
 
 # Clippy gets stuck for unknown reasons if sdk-c is included in the build, so check it separately.
@@ -23,10 +20,8 @@ _ cargo +"$rust_stable" clippy --manifest-path sdk-c/Cargo.toml -- --deny=warnin
 
 _ cargo +"$rust_stable" audit --version
 _ cargo +"$rust_stable" audit --ignore RUSTSEC-2020-0002 --ignore RUSTSEC-2020-0008
-_ ci/nits.sh
 _ ci/order-crates-for-publishing.py
 _ docs/build.sh
-_ ci/check-ssh-keys.sh
 
 {
   cd programs/bpf

ci/test-sanity.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -e
+
+cd "$(dirname "$0")/.."
+
+source ci/_
+
+(
+  echo --- git show --check
+  set -x
+  # Look for failed mergify.io backports by searching leftover conflict markers
+  # Also check for any trailing whitespaces!
+  if [[ -n $BUILDKITE_PULL_REQUEST_BASE_BRANCH ]]; then
+    base_branch=$BUILDKITE_PULL_REQUEST_BASE_BRANCH
+  else
+    base_branch=$BUILDKITE_BRANCH
+  fi
+  git fetch origin "$base_branch"
+  git show "$(git merge-base HEAD "origin/$base_branch")..HEAD" --check --oneline
+)
+
+echo
+
+_ ci/nits.sh
+_ ci/check-ssh-keys.sh
+
+echo --- ok