Maybe cargo cross isn't supported? Try explicit config file

Author: scottopell

Cargo.toml

@@ -24,35 +24,6 @@ tokio = { version = "1.32" }
 tracing = { version = "0.1" }
 uuid =  { version = "1.6", default-features = false, features = ["v4", "serde"] }
 
-# Ref https://github.com/cross-rs/cross/blob/main/docs/custom_images.md#adding-dependencies-to-existing-images
-[workspace.metadata.cross.target.aarch64-unknown-linux-gnu]
-pre-build = [
-    "dpkg --add-architecture $CROSS_DEB_ARCH",
-    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
-]
-[workspace.metadata.cross.target.aarch64-unknown-linux-musl]
-pre-build = [
-    "dpkg --add-architecture $CROSS_DEB_ARCH",
-    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
-]
-[workspace.metadata.cross.target.x86_64-unknown-linux-gnu]
-pre-build = [
-    "dpkg --add-architecture $CROSS_DEB_ARCH",
-    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
-]
-[workspace.metadata.cross.target.x86_64-unknown-linux-musl]
-pre-build = [
-    "dpkg --add-architecture $CROSS_DEB_ARCH",
-    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
-]
-[workspace.metadata.cross.target.x86_64-apple-darwin]
-pre-build = [
-    "brew install protobuf"
-]
-[workspace.metadata.cross.target.aarch64-apple-darwin]
-pre-build = [
-    "brew install protobuf"
-]
 
 [profile.release]
 lto = true        # Optimize our binary at link stage.

Cross.toml

@@ -0,0 +1,29 @@
+# Ref https://github.com/cross-rs/cross/blob/main/docs/custom_images.md#adding-dependencies-to-existing-images
+[target.aarch64-unknown-linux-gnu]
+pre-build = [
+    "dpkg --add-architecture $CROSS_DEB_ARCH",
+    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
+]
+[target.aarch64-unknown-linux-musl]
+pre-build = [
+    "dpkg --add-architecture $CROSS_DEB_ARCH",
+    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
+]
+[target.x86_64-unknown-linux-gnu]
+pre-build = [
+    "dpkg --add-architecture $CROSS_DEB_ARCH",
+    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
+]
+[target.x86_64-unknown-linux-musl]
+pre-build = [
+    "dpkg --add-architecture $CROSS_DEB_ARCH",
+    "apt-get update && apt-get --assume-yes install protobuf-compiler:$CROSS_DEB_ARCH"
+]
+[target.x86_64-apple-darwin]
+pre-build = [
+    "brew install protobuf"
+]
+[target.aarch64-apple-darwin]
+pre-build = [
+    "brew install protobuf"
+]