fn explain_free_region<'tcx>(
tcx: TyCtxt<'tcx>,
err: &mut Diag<'_>,
generic_param_scope: LocalDefId,
prefix: &str,
region: Region<'tcx>,
suffix: &str,
)fn explain_free_region<'tcx>(
tcx: TyCtxt<'tcx>,
err: &mut Diag<'_>,
generic_param_scope: LocalDefId,
prefix: &str,
region: Region<'tcx>,
suffix: &str,
)