ci: add notice on top of the azure pipelines configuration

This will inform contributors tweaking the Azure Pipelines configuration
that they also need to tweak the GitHub Actions setup.

src/ci/azure-pipelines/auto.yml

@@ -1,3 +1,14 @@
+#####################################
+##    READ BEFORE CHANGING THIS    ##
+#####################################
+
+# We're in the process of evaluating GitHub Actions as a possible replacement
+# for Azure Pipelines, and at the moment the configuration is duplicated
+# between the two CI providers. Be sure to also change the configuration in
+# src/ci/github-actions when changing this file.
+
+#####################################
+
 #
 # Azure Pipelines "auto" branch build for Rust on Linux, macOS, and Windows.
 #

src/ci/azure-pipelines/master.yml

@@ -1,3 +1,14 @@
+#####################################
+##    READ BEFORE CHANGING THIS    ##
+#####################################
+
+# We're in the process of evaluating GitHub Actions as a possible replacement
+# for Azure Pipelines, and at the moment the configuration is duplicated
+# between the two CI providers. Be sure to also change the configuration in
+# src/ci/github-actions when changing this file.
+
+#####################################
+
 #
 # Azure Pipelines job to publish toolstate. Only triggers on pushes to master.
 #

src/ci/azure-pipelines/pr.yml

@@ -1,3 +1,14 @@
+#####################################
+##    READ BEFORE CHANGING THIS    ##
+#####################################
+
+# We're in the process of evaluating GitHub Actions as a possible replacement
+# for Azure Pipelines, and at the moment the configuration is duplicated
+# between the two CI providers. Be sure to also change the configuration in
+# src/ci/github-actions when changing this file.
+
+#####################################
+
 #
 # Azure Pipelines pull request build for Rust
 #

src/ci/azure-pipelines/steps/run.yml

@@ -1,3 +1,14 @@
+#####################################
+##    READ BEFORE CHANGING THIS    ##
+#####################################
+
+# We're in the process of evaluating GitHub Actions as a possible replacement
+# for Azure Pipelines, and at the moment the configuration is duplicated
+# between the two CI providers. Be sure to also change the configuration in
+# src/ci/github-actions when changing this file.
+
+#####################################
+
 # FIXME(linux): need to configure core dumps, enable them, and then dump
 # backtraces on failure from all core dumps:
 #

src/ci/azure-pipelines/try.yml

@@ -1,3 +1,14 @@
+#####################################
+##    READ BEFORE CHANGING THIS    ##
+#####################################
+
+# We're in the process of evaluating GitHub Actions as a possible replacement
+# for Azure Pipelines, and at the moment the configuration is duplicated
+# between the two CI providers. Be sure to also change the configuration in
+# src/ci/github-actions when changing this file.
+
+#####################################
+
 pr: none
 trigger:
 - try