Auto merge of #73897 - ehuss:update-cargo, r=ehuss

Update cargo, rls

## cargo
14 commits in c26576f9adddd254b3dd63aecba176434290a9f6..fede83ccf973457de319ba6fa0e36ead454d2e20
2020-06-23 16:21:21 +0000 to 2020-07-02 21:51:34 +0000
- Fix overflow error on 32-bit. (rust-lang/cargo#8446)
- Exclude the target directory from backups using CACHEDIR.TAG (rust-lang/cargo#8378)
- CONTRIBUTING.md: Link to Zulip rather than Discord (rust-lang/cargo#8436)
- Update built-in help for features (rust-lang/cargo#8433)
- Update core-foundation requirement from 0.7.0 to 0.9.0 (rust-lang/cargo#8432)
- Parse `# env-dep` directives in dep-info files (rust-lang/cargo#8421)
- Move string interning to util (rust-lang/cargo#8419)
- Expose built cdylib artifacts in the Compilation structure (rust-lang/cargo#8418)
- Remove unused serde_derive dependency from the crates.io crate (rust-lang/cargo#8416)
- Remove unused remove_dir_all dependency (rust-lang/cargo#8412)
- Improve git error messages a bit (rust-lang/cargo#8409)
- Improve the description of Config.home_path (rust-lang/cargo#8408)
- Improve support for non-`master` main branches (rust-lang/cargo#8364)
- Document that OUT_DIR in JSON messages is an absolute path (rust-lang/cargo#8403)

## rls
2020-06-19 15:36:00 +0200 to 2020-06-30 23:34:52 +0200
- Update cargo (rust-lang/rls#1686)

Author: bors

Cargo.lock

@@ -312,7 +312,6 @@ dependencies = [
  "openssl",
  "percent-encoding 2.1.0",
  "pretty_env_logger",
- "remove_dir_all",
  "rustc-workspace-hack",
  "rustfix",
  "same-file",
@@ -655,19 +654,19 @@ dependencies = [
 
 [[package]]
 name = "core-foundation"
-version = "0.7.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57d24c7a13c43e870e37c1556b74555437870a04514f7685f5b354e090567171"
+checksum = "3b5ed8e7e76c45974e15e41bfa8d5b0483cd90191639e01d8f5f1e606299d3fb"
 dependencies = [
  "core-foundation-sys",
  "libc",
 ]
 
 [[package]]
 name = "core-foundation-sys"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3a71ab494c0b5b860bdc8407ae08978052417070c2ced38573a9157ad75b8ac"
+checksum = "9a21fa21941700a3cd8fcb4091f361a6a712fac632f85d9f487cc892045d55c6"
 
 [[package]]
 name = "crates-io"
@@ -677,7 +676,6 @@ dependencies = [
  "curl",
  "percent-encoding 2.1.0",
  "serde",
- "serde_derive",
  "serde_json",
  "url 2.1.0",
 ]