fix err description deprecated

2 files changed, 2 insertions, 3 deletions

diff --git a/build.rs b/build.rs
index b7933a3..f5f04fd 100644
--- a/build.rs
+++ b/build.rs
@@ -27,7 +27,7 @@ fn main() {
         }
     }
 
-    let var = std::env::var_os("SHELL_COMPLETIONS_DIR").or(std::env::var_os("OUT_DIR"));
+    let var = std::env::var_os("SHELL_COMPLETIONS_DIR").or_else(|| std::env::var_os("OUT_DIR"));
     let outdir = match var {
         None => return,
         Some(outdir) => outdir,
diff --git a/src/app.rs b/src/app.rs
index d67e713..af906c8 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -220,9 +220,8 @@ pub fn build() -> App<'static, 'static> {
 }
 
 fn validate_date_argument(arg: String) -> Result<(), String> {
-    use std::error::Error;
     if arg.starts_with('+') {
-        validate_time_format(&arg).map_err(|err| err.description().to_string())
+        validate_time_format(&arg).map_err(|err| err.to_string())
     } else if &arg == "date" || &arg == "relative" {
         Result::Ok(())
     } else {