Rollup merge of #26011 - genodeftest:patch-1, r=steveklabnik

Author: steveklabnik

src/doc/index.md

@@ -25,7 +25,7 @@ series of small examples.
 If you need help with something, or just want to talk about Rust with others,
 there are a few places you can do that:
 
-The Rust IRC channels on [irc.mozilla.org](http://irc.mozilla.org/) are the
+The Rust IRC channels on [irc.mozilla.org](irc://irc.mozilla.org/) are the
 fastest way to get help.
 [`#rust`](http://chat.mibbit.com/?server=irc.mozilla.org&channel=%23rust) is
 the general discussion channel, and you'll find people willing to help you with
@@ -40,15 +40,15 @@ There's also
 [`#rust-internals`](http://chat.mibbit.com/?server=irc.mozilla.org&channel=%23rust-internals), which is for discussion of the development of Rust itself.
 
 You can also get help on [Stack
-Overflow](http://stackoverflow.com/questions/tagged/rust). Searching for your
+Overflow](https://stackoverflow.com/questions/tagged/rust). Searching for your
 problem might reveal someone who has asked it before!
 
-There is an active [subreddit](http://reddit.com/r/rust) with lots of
+There is an active [subreddit](https://reddit.com/r/rust) with lots of
 discussion and news about Rust.
 
-There is also a [user forum](http://users.rust-lang.org), for all
-user-oriented discussion, and a [developer
-forum](http://internals.rust-lang.org/), where the development of Rust
+There is also a [user forum](https://users.rust-lang.org), for all
+user-oriented discussion, and a [developer 
+forum](https://internals.rust-lang.org/), where the development of Rust
 itself is discussed.
 
 # Specification
@@ -61,7 +61,7 @@ the language in as much detail as possible is in [the reference](reference.html)
 Rust is still a young language, so there isn't a ton of tooling yet, but the
 tools we have are really nice.
 
-[Cargo](http://crates.io) is Rust's package manager, and its website contains
+[Cargo](https://crates.io) is Rust's package manager, and its website contains
 lots of good documentation.
 
 [`rustdoc`](book/documentation.html) is used to generate documentation for Rust code.

src/doc/trpl/macros.md

@@ -224,7 +224,7 @@ more" match. Both forms optionally include a separator, which can be any token
 except `+` or `*`.
 
 This system is based on
-"[Macro-by-Example](http://www.cs.indiana.edu/ftp/techreports/TR206.pdf)"
+"[Macro-by-Example](https://www.cs.indiana.edu/ftp/techreports/TR206.pdf)"
 (PDF link).
 
 # Hygiene
@@ -319,7 +319,7 @@ syntax context where it was introduced. It’s as though the variable `state`
 inside `main` is painted a different "color" from the variable `state` inside
 the macro, and therefore they don’t conflict.
 
-[hygienic macro system]: http://en.wikipedia.org/wiki/Hygienic_macro
+[hygienic macro system]: https://en.wikipedia.org/wiki/Hygienic_macro
 
 This also restricts the ability of macros to introduce new bindings at the
 invocation site. Code such as the following will not work:
@@ -622,7 +622,7 @@ invocation gives you another opportunity to pattern-match the macro’s
 arguments.
 
 As an extreme example, it is possible, though hardly advisable, to implement
-the [Bitwise Cyclic Tag](http://esolangs.org/wiki/Bitwise_Cyclic_Tag) automaton
+the [Bitwise Cyclic Tag](https://esolangs.org/wiki/Bitwise_Cyclic_Tag) automaton
 within Rust’s macro system.
 
 ```rust