From 8587bacc252e95e533d319cc58b58ec11e5561ff Mon Sep 17 00:00:00 2001
From: Koichi ITO <koic.ito@gmail.com>
Date: Mon, 2 May 2022 23:05:01 +0900
Subject: [PATCH] YJIT: Remove redundant `extern crate` (#5869)

Follow up https://github.com/ruby/ruby/commit/0514d81

Rust YJIT requires Rust 1.60.0 or later. So, `extern crate` looks unnecessary
because it can use the following Rust 2018 edition feature:
https://doc.rust-lang.org/stable/edition-guide/rust-2018/path-changes.html#no-more-extern-crate

It passes the following tests.

```console
% cd yjit
% cargo test --features asm_comments,disasm
(snip)

test result: ok. 56 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
```
---
 yjit/src/asm/x86_64/tests.rs | 1 -
 yjit/src/disasm.rs           | 1 -
 2 files changed, 2 deletions(-)

diff --git a/yjit/src/asm/x86_64/tests.rs b/yjit/src/asm/x86_64/tests.rs
index 08f65b8821..c77d30e74d 100644
--- a/yjit/src/asm/x86_64/tests.rs
+++ b/yjit/src/asm/x86_64/tests.rs
@@ -404,7 +404,6 @@ fn test_xor() {
 #[cfg(feature = "disasm")]
 fn basic_capstone_usage() -> std::result::Result<(), capstone::Error> {
     // Test drive Capstone with simple input
-    extern crate capstone;
     use capstone::prelude::*;
     let cs = Capstone::new()
         .x86()
diff --git a/yjit/src/disasm.rs b/yjit/src/disasm.rs
index 3136bfd03f..2082648c4a 100644
--- a/yjit/src/disasm.rs
+++ b/yjit/src/disasm.rs
@@ -66,7 +66,6 @@ fn disasm_iseq(iseq: IseqPtr) -> String {
     }
 
     // Initialize capstone
-    extern crate capstone;
     use capstone::prelude::*;
     let cs = Capstone::new()
         .x86()