diff --git a/support/download/cargo-post-process b/support/download/cargo-post-process
index aea2d8da7a..3f4666c006 100755
--- a/support/download/cargo-post-process
+++ b/support/download/cargo-post-process
@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 
 set -e
-set -o pipefail
 
 . "${0%/*}/helpers"
 
@@ -31,7 +30,13 @@ flock "${CARGO_HOME}"/.br-lock \
 cargo vendor \
     --manifest-path ${BR_CARGO_MANIFEST_PATH-Cargo.toml} \
     --locked VENDOR \
-    | tee .cargo/config
+    > .cargo/config
+
+# "cargo vendor' outputs on stderr a message directing to add some data
+# to the project's .cargo/config.toml, data that it outputs on stdout.
+# Since we redirect stdout to .cargo/config.toml, the message on stderr
+# gets confusing, so instruct the user that it's been handled.
+printf '(note: .cargo/config.toml automatically updated by Buildroot)\n\n'
 
 popd > /dev/null