Rollup merge of rust-lang#78320 - phil-opp:patch-5, r=GuillaumeGomez,alexcrichton

JohnTitor · web-flow · commit 63e48cd41006 · 2020-10-25T18:43:45.000+09:00
Link to cargo's `build-std` feature instead of `xargo` in custom target docs

The `xargo` tool is in maintenance mode since 2018 and the `build-std` feature of cargo already works reasonably well for most use cases.
diff --git a/src/doc/rustc/src/targets/custom.md b/src/doc/rustc/src/targets/custom.md
@@ -14,4 +14,4 @@ To see it for a different target, add the `--target` flag:
 $ rustc +nightly -Z unstable-options --target=wasm32-unknown-unknown --print target-spec-json
 ```
 
-To use a custom target, see [`xargo`](https://github.com/japaric/xargo).
+To use a custom target, see the (unstable) [`build-std` feature](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#build-std) of `cargo`.

-Original file line number
+Diff line change
 $ rustc +nightly -Z unstable-options --target=wasm32-unknown-unknown --print target-spec-json
 ```
 -To use a custom target, see [`xargo`](https://github.com/japaric/xargo).
 +To use a custom target, see the (unstable) [`build-std` feature](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#build-std) of `cargo`.