upgrade rustwide, drop failure compat code

Author: syphar

.cargo/audit.toml

@@ -1,8 +1,5 @@
 [advisories]
 ignore = [
-    "RUSTSEC-2020-0036", # failure is officially deprecated/unmaintained
-    # https://github.com/rust-lang/docs.rs/issues/1014
-
     "RUSTSEC-2023-0018", # rustwide -> remove_dir_all,TOCTOU / Race Condition 
     # https://github.com/rust-lang/docs.rs/issues/2074