Auto merge of #17992 - Wilfred:newlines_in_logs, r=Veykril

internal: Avoid newlines in fetch errors

Most logs lines don't have newlines, ensure fetch errors follow this pattern. This makes it easier to see which log line is associated with the error.

Before:

    2024-08-28T21:11:58.431856Z ERROR FetchWorkspaceError:
    rust-analyzer failed to discover workspace

After:

    2024-08-28T21:11:58.431856Z ERROR FetchWorkspaceError: rust-analyzer failed to discover workspace

src/tools/rust-analyzer/crates/rust-analyzer/src/main_loop.rs

@@ -689,7 +689,7 @@ impl GlobalState {
                         self.fetch_workspaces_queue
                             .op_completed(Some((workspaces, force_reload_crate_graph)));
                         if let Err(e) = self.fetch_workspace_error() {
-                            error!("FetchWorkspaceError:\n{e}");
+                            error!("FetchWorkspaceError: {e}");
                         }
                         self.wants_to_switch = Some("fetched workspace".to_owned());
                         (Progress::End, None)
@@ -729,7 +729,7 @@ impl GlobalState {
                     BuildDataProgress::End(build_data_result) => {
                         self.fetch_build_data_queue.op_completed(build_data_result);
                         if let Err(e) = self.fetch_build_data_error() {
-                            error!("FetchBuildDataError:\n{e}");
+                            error!("FetchBuildDataError: {e}");
                         }
 
                         if self.wants_to_switch.is_none() {