diff --git a/src/ls/ls.rs b/src/ls/ls.rs
index 80641b291..751e3aead 100644
--- a/src/ls/ls.rs
+++ b/src/ls/ls.rs
@@ -623,7 +623,7 @@ fn display_file_name(
         Some(val) => match val.as_ref() {
             "always" | "yes" | "force" => true,
             "auto" | "tty" | "if-tty" => stdout_isatty(),
-            "never" | "no" | "none" | _ => false,
+            /* "never" | "no" | "none" | */ _ => false,
         },
     };
     let classify = options.opt_present("classify");
diff --git a/src/printf/tokenize/num_format/formatters/intf.rs b/src/printf/tokenize/num_format/formatters/intf.rs
index c4ba35284..5b524897f 100644
--- a/src/printf/tokenize/num_format/formatters/intf.rs
+++ b/src/printf/tokenize/num_format/formatters/intf.rs
@@ -128,7 +128,7 @@ impl Intf {
             },
             'x' | 'X' => "ffffffffffffffff",
             'o' => "1777777777777777777777",
-            'u' | _ => "18446744073709551615",
+            /* 'u' | */ _ => "18446744073709551615",
         }));
         fmt_prim
     }
@@ -204,7 +204,7 @@ impl Formatter for Intf {
             let radix_out = match *field.field_char {
                 'd' | 'i' | 'u' => Base::Ten,
                 'x' | 'X' => Base::Hex,
-                'o' | _ => Base::Octal,
+                /* 'o' | */ _ => Base::Octal,
             };
             let radix_mismatch = !radix_out.eq(&inprefix.radix_in);
             let decr_from_max: bool = inprefix.sign == -1 && *field.field_char != 'i';
diff --git a/src/printf/tokenize/sub.rs b/src/printf/tokenize/sub.rs
index 03fef5797..6e460268c 100644
--- a/src/printf/tokenize/sub.rs
+++ b/src/printf/tokenize/sub.rs
@@ -369,7 +369,8 @@ impl token::Token for Sub {
                             // for 'c': get iter of string vals,
                             // get opt<char> of first val
                             // and map it to opt<String>
-                            'c' | _ => arg_string.chars().next().map(|x| x.to_string()),
+                            /* 'c' | */
+                            _ => arg_string.chars().next().map(|x| x.to_string()),
                         }
                     }
                     None => None,
diff --git a/src/printf/tokenize/unescaped_text.rs b/src/printf/tokenize/unescaped_text.rs
index bb9566cef..5c7ee603b 100644
--- a/src/printf/tokenize/unescaped_text.rs
+++ b/src/printf/tokenize/unescaped_text.rs
@@ -148,7 +148,7 @@ impl UnescapedText {
                     'u' | 'U' => {
                         let len = match e {
                             'u' => 4,
-                            'U' | _ => 8,
+                            /* 'U' | */ _ => 8,
                         };
                         let val = UnescapedText::base_to_u32(len, len, 16, it);
                         UnescapedText::validate_iec(val, false);