Replace absolute paths with relative ones

Modern compilers allow reaching external crates
like std or core via relative paths in modules
outside of lib.rs and main.rs.

Author: est31

core/tests/num/int_macros.rs

@@ -204,8 +204,8 @@ macro_rules! int_module {
 
             #[test]
             fn test_from_str() {
-                fn from_str<T: ::std::str::FromStr>(t: &str) -> Option<T> {
-                    ::std::str::FromStr::from_str(t).ok()
+                fn from_str<T: std::str::FromStr>(t: &str) -> Option<T> {
+                    std::str::FromStr::from_str(t).ok()
                 }
                 assert_eq!(from_str::<$T>("0"), Some(0 as $T));
                 assert_eq!(from_str::<$T>("3"), Some(3 as $T));

test/src/formatters/json.rs

@@ -182,8 +182,8 @@ impl<T: Write> OutputFormatter for JsonFormatter<T> {
 /// Base code taken form `libserialize::json::escape_str`
 struct EscapedString<S: AsRef<str>>(S);
 
-impl<S: AsRef<str>> ::std::fmt::Display for EscapedString<S> {
-    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+impl<S: AsRef<str>> std::fmt::Display for EscapedString<S> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> ::std::fmt::Result {
         let mut start = 0;
 
         for (i, byte) in self.0.as_ref().bytes().enumerate() {