Update changelog for 1.50

CHANGELOG.md

@@ -1,20 +1,70 @@
 # Changelog
 
+## Cargo 1.51 (2021-03-25)
+[75d5d8cf...HEAD](https://github.com/rust-lang/cargo/compare/75d5d8cf...HEAD)
+
+### Added
+
+### Changed
+
+### Fixed
+
+### Nightly only
+
 ## Cargo 1.50 (2021-02-11)
-[8662ab42...HEAD](https://github.com/rust-lang/cargo/compare/8662ab42...HEAD)
+[8662ab42...rust-1.50.0](https://github.com/rust-lang/cargo/compare/8662ab42...rust-1.50.0)
 
 ### Added
 - Added the `doc` field to `cargo metadata`, which indicates if a target is
   documented.
   [#8869](https://github.com/rust-lang/cargo/pull/8869)
+- Added `RUSTC_WORKSPACE_WRAPPER`, an alternate RUSTC wrapper that only runs
+  for the local workspace packages, and caches its artifacts independently of
+  non-wrapped builds.
+  [#8976](https://github.com/rust-lang/cargo/pull/8976)
+- Added `--workspace` to `cargo update` to update only the workspace members,
+  and not their dependencies. This is particularly useful if you update the
+  version in `Cargo.toml` and want to update `Cargo.lock` without running any
+  other commands.
+  [#8725](https://github.com/rust-lang/cargo/pull/8725)
 
 ### Changed
 - `.crate` files uploaded to a registry are now built with reproducible
   settings, so that the same `.crate` file created on different machines
   should be identical.
   [#8864](https://github.com/rust-lang/cargo/pull/8864)
+- Git dependencies that specify more than one of `branch`, `tag`, or `rev` are
+  now rejected.
+  [#8984](https://github.com/rust-lang/cargo/pull/8984)
+- The `rerun-if-changed` build script directive can now point to a directory,
+  in which case Cargo will check if any file in that directory changes.
+  [#8973](https://github.com/rust-lang/cargo/pull/8973)
+- Slightly optimize `cargo vendor`
+  [#8937](https://github.com/rust-lang/cargo/pull/8937)
+- If Cargo cannot determine the username or email address, `cargo new` will no
+  longer fail, and instead create an empty authors list.
+  [#8912](https://github.com/rust-lang/cargo/pull/8912)
+- Add period to allowed feature name characters.
+  [#8932](https://github.com/rust-lang/cargo/pull/8932)
+- The progress bar width has been reduced to provide more room to display the
+  crates currently being built.
+  [#8892](https://github.com/rust-lang/cargo/pull/8892)
+- `cargo new` will now support `includeIf` directives in `.gitconfig` to match
+  the correct directory when determining the username and email address.
+  [#8886](https://github.com/rust-lang/cargo/pull/8886)
 
 ### Fixed
+- Fixed `cargo metadata` and `cargo tree` to only download packages for the
+  requested target.
+  [#8987](https://github.com/rust-lang/cargo/pull/8987)
+- Updated libgit2, which brings in many fixes, particularly fixing a zlib
+  error that occasionally appeared on 32-bit systems.
+  [#8998](https://github.com/rust-lang/cargo/pull/8998)
+- Fixed stack overflow with a circular dev-dependency that uses the `links`
+  field.
+  [#8969](https://github.com/rust-lang/cargo/pull/8969)
+- Fixed `cargo publish` failing on some filesystems, particularly 9p on WSL2.
+  [#8950](https://github.com/rust-lang/cargo/pull/8950)
 
 ### Nightly only
 - Allow `resolver="1"` to specify the original feature resolution behavior.
@@ -23,6 +73,14 @@
   and `cargo:rustc-link-arg` build script options.
   [docs](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#extra-link-arg)
   [#8441](https://github.com/rust-lang/cargo/pull/8441)
+- Implemented external credential process support, and added `cargo logout`.
+  ([RFC 2730](https://github.com/rust-lang/rfcs/blob/master/text/2730-cargo-token-from-process.md))
+  ([docs](https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#credential-process))
+  [#8934](https://github.com/rust-lang/cargo/pull/8934)
+- Fix panic with `-Zbuild-std` and no roots.
+  [#8942](https://github.com/rust-lang/cargo/pull/8942)
+- Set docs.rs as the default extern-map for crates.io
+  [#8877](https://github.com/rust-lang/cargo/pull/8877)
 
 ## Cargo 1.49 (2020-12-31)
 [75615f8e...rust-1.49.0](https://github.com/rust-lang/cargo/compare/75615f8e...rust-1.49.0)
@@ -79,8 +137,6 @@
 - Fixed the new feature resolver downloading extra dependencies that weren't
   strictly necessary.
   [#8823](https://github.com/rust-lang/cargo/pull/8823)
-- Vendored builds now work with `-Zbuild-std`.
-  [#8834](https://github.com/rust-lang/cargo/pull/8834)
 
 ## Cargo 1.48 (2020-11-19)
 [51b66125...rust-1.48.0](https://github.com/rust-lang/cargo/compare/51b66125...rust-1.48.0)