Warn on failure to query system configuration file

Author: charliermarsh

crates/uv-settings/src/lib.rs

@@ -2,7 +2,7 @@ use std::env;
 use std::ops::Deref;
 use std::path::{Path, PathBuf};
 
-use tracing::debug;
+use tracing::{debug, warn};
 
 use uv_fs::Simplified;
 use uv_static::EnvVars;
@@ -241,7 +241,14 @@ fn system_config_file() -> Option<PathBuf> {
         // Fallback to `/etc/uv/uv.toml` if `XDG_CONFIG_DIRS` is not set or no valid
         // path is found.
         let candidate = Path::new("/etc/uv/uv.toml");
-        candidate.is_file().then(|| candidate.to_path_buf())
+        match candidate.try_exists() {
+            Ok(true) => Some(candidate.to_path_buf()),
+            Ok(false) => None,
+            Err(err) => {
+                warn!("Failed to query system configuration file: {err}");
+                None
+            }
+        }
     }
 }