expr: clap 3

src/uu/expr/Cargo.toml

@@ -15,7 +15,7 @@ edition = "2018"
 path = "src/expr.rs"
 
 [dependencies]
-clap = { version = "2.33", features = ["wrap_help"] }
+clap = { version = "3.0", features = ["wrap_help", "cargo"] }
 libc = "0.2.42"
 num-bigint = "0.4.0"
 num-traits = "0.2.14"

src/uu/expr/src/expr.rs

@@ -15,10 +15,10 @@ mod tokens;
 const VERSION: &str = "version";
 const HELP: &str = "help";
 
-pub fn uu_app() -> App<'static, 'static> {
+pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
-        .arg(Arg::with_name(VERSION).long(VERSION))
-        .arg(Arg::with_name(HELP).long(HELP))
+        .arg(Arg::new(VERSION).long(VERSION))
+        .arg(Arg::new(HELP).long(HELP))
 }
 
 #[uucore_procs::gen_uumain]