lint: Add missing format!

This got missed when converting the errors.

Signed-off-by: Colin Walters <[email protected]>

Author: cgwalters

lib/src/lints.rs

@@ -380,12 +380,13 @@ fn check_baseimage_root_norecurse(dir: &Dir) -> LintResult {
     let link = dir.read_link_contents("ostree")?;
     let expected = "sysroot/ostree";
     if link.as_os_str().as_bytes() != expected.as_bytes() {
-        return lint_err("Expected /ostree -> {expected}, not {link:?}");
+        return lint_err(format!("Expected /ostree -> {expected}, not {link:?}"));
     }
 
     let config = ostree_prepareroot::require_config_from_root(dir)?;
     if !ostree_prepareroot::overlayfs_enabled_in_config(&config)? {
-        return lint_err("{prepareroot_path} does not have composefs enabled");
+        let path = ostree_ext::ostree_prepareroot::CONF_PATH;
+        return lint_err(format!("{path} does not have composefs enabled"));
     }
 
     lint_ok()

ostree-ext/src/ostree_prepareroot.rs

@@ -18,7 +18,8 @@ use crate::keyfileext::KeyFileExt;
 use crate::ostree_manual;
 use crate::utils::ResultExt;
 
-pub(crate) const CONF_PATH: &str = "ostree/prepare-root.conf";
+/// The relative path to ostree-prepare-root's config.
+pub const CONF_PATH: &str = "ostree/prepare-root.conf";
 
 pub(crate) fn load_config(root: &ostree::RepoFile) -> Result<Option<glib::KeyFile>> {
     let cancellable = gio::Cancellable::NONE;