diff --git a/ci/docker-run.sh b/ci/docker-run.sh
index fb6f96329e..dbe30b96bf 100755
--- a/ci/docker-run.sh
+++ b/ci/docker-run.sh
@@ -73,6 +73,7 @@ ARGS+=(
   --env BUILDKITE_JOB_ID
   --env CI
   --env CI_BRANCH
+  --env CI_BASE_BRANCH
   --env CI_TAG
   --env CI_BUILD_ID
   --env CI_COMMIT
diff --git a/ci/env.sh b/ci/env.sh
index ee383f69cf..1d249513a3 100644
--- a/ci/env.sh
+++ b/ci/env.sh
@@ -8,6 +8,7 @@ if [[ -n $CI ]]; then
   export CI=1
   if [[ -n $TRAVIS ]]; then
     export CI_BRANCH=$TRAVIS_BRANCH
+    export CI_BASE_BRANCH=$TRAVIS_BRANCH
     export CI_BUILD_ID=$TRAVIS_BUILD_ID
     export CI_COMMIT=$TRAVIS_COMMIT
     export CI_JOB_ID=$TRAVIS_JOB_ID
@@ -28,8 +29,10 @@ if [[ -n $CI ]]; then
     # to how solana-ci-gate is used to trigger PR builds rather than using the
     # standard Buildkite PR trigger.
     if [[ $CI_BRANCH =~ pull/* ]]; then
+      export CI_BASE_BRANCH=$BUILDKITE_PULL_REQUEST_BASE_BRANCH
       export CI_PULL_REQUEST=true
     else
+      export CI_BASE_BRANCH=$BUILDKITE_BRANCH
       export CI_PULL_REQUEST=
     fi
     export CI_OS_NAME=linux
diff --git a/ci/test-checks.sh b/ci/test-checks.sh
index f917912e34..5403e42e2c 100755
--- a/ci/test-checks.sh
+++ b/ci/test-checks.sh
@@ -7,6 +7,7 @@ cd "$(dirname "$0")/.."
 source ci/_
 source ci/rust-version.sh stable
 source ci/rust-version.sh nightly
+eval "$(ci/channel-info.sh)"
 
 echo --- build environment
 (
@@ -28,15 +29,21 @@ echo --- build environment
 export RUST_BACKTRACE=1
 export RUSTFLAGS="-D warnings"
 
-# Exclude --benches as it's not available in rust stable yet
-if _ scripts/cargo-for-all-lock-files.sh +"$rust_stable" check --locked --tests --bins --examples; then
-  true
+# Only force up-to-date lock files on edge
+if [[ $CI_BASE_BRANCH = "$EDGE_CHANNEL" ]]; then
+  # Exclude --benches as it's not available in rust stable yet
+  if _ scripts/cargo-for-all-lock-files.sh +"$rust_stable" check --locked --tests --bins --examples; then
+    true
+  else
+    check_status=$?
+    echo "Some Cargo.lock might be outdated; update them (or just be a compilation error?)"
+    echo "protip: you can use ./scripts/cargo-for-all-lock-files.sh [check|update] ..."
+    exit "$check_status"
+  fi
 else
-  check_status=$?
-  echo "Some Cargo.lock might be outdated; update them (or just be a compilation error?)"
-  echo "protip: you can use ./scripts/cargo-for-all-lock-files.sh [check|update] ..."
-  exit "$check_status"
+  echo "Note: cargo-for-all-lock-files.sh skipped because $CI_BASE_BRANCH != $EDGE_CHANNEL"
 fi
+
 # Ensure nightly and --benches
 _ scripts/cargo-for-all-lock-files.sh +"$rust_nightly" check --locked --all-targets
 
diff --git a/ci/test-sanity.sh b/ci/test-sanity.sh
index 6c9c17749c..f8f392affe 100755
--- a/ci/test-sanity.sh
+++ b/ci/test-sanity.sh
@@ -10,13 +10,8 @@ source ci/_
   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 diff "$(git merge-base HEAD "origin/$base_branch")..HEAD" --check --oneline
+  git fetch origin "$CI_BASE_BRANCH"
+  git diff "$(git merge-base HEAD "origin/$CI_BASE_BRANCH")..HEAD" --check --oneline
 )
 
 echo