Deal with clippy lints

src/bin/run-emitter-test-suite.rs

@@ -6,6 +6,7 @@
     clippy::cast_sign_loss,
     clippy::items_after_statements,
     clippy::let_underscore_drop,
+    clippy::missing_errors_doc,
     clippy::missing_safety_doc,
     clippy::ptr_as_ptr,
     clippy::single_match_else,

src/bin/run-parser-test-suite.rs

@@ -6,6 +6,7 @@
     clippy::cast_sign_loss,
     clippy::items_after_statements,
     clippy::let_underscore_drop,
+    clippy::missing_errors_doc,
     clippy::missing_safety_doc,
     clippy::too_many_lines
 )]

src/scanner.rs

@@ -534,7 +534,7 @@ unsafe fn yaml_parser_save_simple_key(parser: *mut yaml_parser_t) -> libc::c_int
     if (*parser).simple_key_allowed != 0 {
         let simple_key = yaml_simple_key_t {
             possible: 1_i32,
-            required: required,
+            required,
             token_number: ((*parser).tokens_parsed)
                 .wrapping_add(((*parser).tokens.tail).c_offset_from((*parser).tokens.head)
                     as libc::c_long as libc::c_ulong),

tests/test_emitter.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::type_complexity)]
+
 mod bin;
 #[path = "../src/bin/run-emitter-test-suite.rs"]
 #[allow(dead_code)]

tests/test_parser.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::type_complexity)]
+
 mod bin;
 #[path = "../src/bin/run-parser-test-suite.rs"]
 #[allow(dead_code)]

tests/test_parser_error.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::type_complexity)]
+
 mod bin;
 #[path = "../src/bin/run-parser-test-suite.rs"]
 #[allow(dead_code)]