diff --git a/.github/actions/install-rust/action.yml b/.github/actions/install-rust/action.yml
index bf50acf267..f81784cd79 100644
--- a/.github/actions/install-rust/action.yml
+++ b/.github/actions/install-rust/action.yml
@@ -23,11 +23,11 @@ runs:
         rustup default "${{ inputs.toolchain }}"
 
         # Save disk space by avoiding incremental compilation. Also turn down
-        # debuginfo from 2 to 1 to help save disk space.
+        # debuginfo from 2 to 0 to help save disk space.
         cat >> "$GITHUB_ENV" <<EOF
         CARGO_INCREMENTAL=0
-        CARGO_PROFILE_DEV_DEBUG=1
-        CARGO_PROFILE_TEST_DEBUG=1
+        CARGO_PROFILE_DEV_DEBUG=0
+        CARGO_PROFILE_TEST_DEBUG=0
         EOF
 
         # Deny warnings on CI to keep our code warning-free as it lands in-tree.