diff --git a/src/build/arg/mod.rs b/src/build/arg/mod.rs
index 55b4dcf9093..892dc989ae7 100644
--- a/src/build/arg/mod.rs
+++ b/src/build/arg/mod.rs
@@ -17,8 +17,6 @@ use std::str;
 
 // Third Party
 use crate::util::VecMap;
-#[cfg(feature = "yaml")]
-use yaml_rust;
 
 // Internal
 use crate::build::{arg::settings::ArgFlags, usage_parser::UsageParser};
diff --git a/src/build/arg_group.rs b/src/build/arg_group.rs
index 789dc27632a..b3a89bb7dfd 100644
--- a/src/build/arg_group.rs
+++ b/src/build/arg_group.rs
@@ -1,10 +1,6 @@
 // Std
 use std::fmt::{Debug, Formatter, Result};
 
-// Third Party
-#[cfg(feature = "yaml")]
-use yaml_rust;
-
 // Internal
 use crate::util::Key;
 
diff --git a/src/output/fmt.rs b/src/output/fmt.rs
index 4f8e324dfa3..d36625c6776 100644
--- a/src/output/fmt.rs
+++ b/src/output/fmt.rs
@@ -4,8 +4,6 @@ use ansi_term::ANSIString;
 #[cfg(all(feature = "color", not(target_os = "windows")))]
 use ansi_term::Colour::{Green, Red, Yellow};
 
-#[cfg(feature = "color")]
-use atty;
 use std::env;
 use std::fmt;
 
diff --git a/src/output/help.rs b/src/output/help.rs
index 4a29d323c9a..1d2cf6efca6 100644
--- a/src/output/help.rs
+++ b/src/output/help.rs
@@ -14,10 +14,6 @@ use crate::parse::Parser;
 use crate::util::VecMap;
 use crate::INTERNAL_ERROR_MSG;
 
-// Third Party
-#[cfg(feature = "wrap_help")]
-use term_size;
-use textwrap;
 use unicode_width::UnicodeWidthStr;
 
 #[cfg(not(feature = "wrap_help"))]
diff --git a/src/parse/arg_matcher.rs b/src/parse/arg_matcher.rs
index 9303024b398..f0fcbd10940 100644
--- a/src/parse/arg_matcher.rs
+++ b/src/parse/arg_matcher.rs
@@ -4,9 +4,6 @@ use std::ffi::OsStr;
 use std::mem;
 use std::ops::Deref;
 
-// Third Party
-use indexmap;
-
 // Internal
 use crate::build::{Arg, ArgSettings};
 use crate::parse::{ArgMatches, MatchedArg, SubCommand};
diff --git a/src/parse/errors.rs b/src/parse/errors.rs
index e48d1b11a01..9f9f24412a5 100644
--- a/src/parse/errors.rs
+++ b/src/parse/errors.rs
@@ -1004,11 +1004,7 @@ impl Error {
         });
         Error {
             cause: format!("The argument '{}' wasn't found", a),
-            message: format!(
-                "{} The argument '{}' wasn't found",
-                c.error("error:"),
-                a.clone()
-            ),
+            message: format!("{} The argument '{}' wasn't found", c.error("error:"), a),
             kind: ErrorKind::ArgumentNotFound,
             info: Some(vec![a]),
         }
diff --git a/src/parse/features/suggestions.rs b/src/parse/features/suggestions.rs
index 25a33ffd537..3e62467b589 100644
--- a/src/parse/features/suggestions.rs
+++ b/src/parse/features/suggestions.rs
@@ -1,10 +1,6 @@
 #[cfg(feature = "suggestions")]
 use std::cmp::Ordering;
 
-// Third Party
-#[cfg(feature = "suggestions")]
-use strsim;
-
 // Internal
 use crate::build::App;
 use crate::output::fmt::Format;