From e554a220fce7701ee7f62711726e1a7af0f132d1 Mon Sep 17 00:00:00 2001
From: flip1995 <philipp.krones@embecosm.com>
Date: Mon, 13 Dec 2021 19:05:00 +0100
Subject: [PATCH] Use rustc_private and bump nightly

This moves away from the rustc-ap crates and uses rustc-dev instead. It
also bumps this crate to use the latest nightly.
---
 Cargo.lock             | 951 ++++-------------------------------------
 Cargo.toml             |  32 +-
 README.md              |   6 +-
 rust-toolchain.toml    |   4 +-
 src/racer/ast.rs       |  16 +-
 src/racer/ast_types.rs |   4 +-
 src/racer/lib.rs       |   9 +
 src/racer/snippets.rs  |   2 +-
 8 files changed, 117 insertions(+), 907 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 4a350138..a56bfe24 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,34 +4,22 @@ version = 3
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.10"
+version = "0.7.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8716408b8bc624ed7f65d223ddb9ac2d044c0547b6fa4b0d554f3a9540496ada"
+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
 dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "annotate-snippets"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d78ea013094e5ea606b1c05fe35f1dd7ea1eb1ea259908d040b25bd5ec677ee5"
-
 [[package]]
 name = "ansi_term"
-version = "0.11.0"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
 dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "arrayvec"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a2f58b0bb10c380af2b26e57212856b8c9a59e0925b4c20f4a174a49734eaf7"
-
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -43,38 +31,11 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "autocfg"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
-
 [[package]]
 name = "bitflags"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
-
-[[package]]
-name = "block-buffer"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
-dependencies = [
- "generic-array",
-]
-
-[[package]]
-name = "cc"
-version = "1.0.53"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "404b1fe4f65288577753b17e3b36a04596ee784493ec249bf81c7f2d2acd751c"
-
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "cfg-if"
@@ -84,9 +45,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "2.33.0"
+version = "2.34.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
+checksum = "a0610544180c38b88101fecf2dd634b174a62eef6946f84dfc6a7127512b381c"
 dependencies = [
  "ansi_term",
  "atty",
@@ -98,114 +59,24 @@ dependencies = [
 ]
 
 [[package]]
-name = "cloudabi"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4344512281c643ae7638bbabc3af17a11307803ec8f0fcad9fae512a8bf36467"
-dependencies = [
- "bitflags",
-]
-
-[[package]]
-name = "cpuid-bool"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8aebca1129a03dc6dc2b127edd729435bbc4a37e1d5f4d7513165089ceb02634"
-
-[[package]]
-name = "crossbeam-deque"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f02af974daeee82218205558e51ec8768b48cf524bd01d550abe5573a608285"
-dependencies = [
- "crossbeam-epoch",
- "crossbeam-utils 0.7.2",
- "maybe-uninit",
-]
-
-[[package]]
-name = "crossbeam-epoch"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
-dependencies = [
- "autocfg",
- "cfg-if 0.1.10",
- "crossbeam-utils 0.7.2",
- "lazy_static",
- "maybe-uninit",
- "memoffset",
- "scopeguard",
-]
-
-[[package]]
-name = "crossbeam-queue"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "774ba60a54c213d409d5353bda12d49cd68d14e45036a285234c8d6f91f92570"
-dependencies = [
- "cfg-if 0.1.10",
- "crossbeam-utils 0.7.2",
- "maybe-uninit",
-]
-
-[[package]]
-name = "crossbeam-utils"
-version = "0.7.2"
+name = "convert_case"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
-dependencies = [
- "autocfg",
- "cfg-if 0.1.10",
- "lazy_static",
-]
-
-[[package]]
-name = "crossbeam-utils"
-version = "0.8.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4feb231f0d4d6af81aed15928e58ecf5816aa62a2393e2c82f46973e92a9a278"
-dependencies = [
- "autocfg",
- "cfg-if 1.0.0",
- "lazy_static",
-]
+checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
 
 [[package]]
 name = "derive_more"
-version = "0.99.5"
+version = "0.99.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2323f3f47db9a0e77ce7a300605d8d2098597fc451ed1a97bb1f6411bb550a7"
+checksum = "4fb810d30a7c1953f91334de7244731fc3f3c10d7fe163338a35b9f640960321"
 dependencies = [
+ "convert_case",
  "proc-macro2",
  "quote",
+ "rustc_version",
  "syn",
 ]
 
-[[package]]
-name = "digest"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
-dependencies = [
- "generic-array",
-]
-
-[[package]]
-name = "either"
-version = "1.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb1f6b1ce1c140482ea30ddd3335fc0024ac7ee112895426e0a629a6c20adfe3"
-
-[[package]]
-name = "ena"
-version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7402b94a93c24e742487327a7cd839dc9d36fec9de9fb25b09f2dae459f36c3"
-dependencies = [
- "log",
-]
-
 [[package]]
 name = "env_logger"
 version = "0.7.1"
@@ -220,49 +91,19 @@ dependencies = [
 ]
 
 [[package]]
-name = "generic-array"
-version = "0.14.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "501466ecc8a30d1d3b7fc9229b122b2ce8ed6e9d9223f1138d4babb253e51817"
-dependencies = [
- "typenum",
- "version_check",
-]
-
-[[package]]
-name = "getopts"
-version = "0.2.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14dbbfd5c71d70241ecf9e6f13737f7b5ce823821063188d7e46c41d371eebd5"
-dependencies = [
- "unicode-width",
-]
-
-[[package]]
-name = "getrandom"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
-dependencies = [
- "cfg-if 1.0.0",
- "libc",
- "wasi",
-]
-
-[[package]]
-name = "hashbrown"
-version = "0.8.2"
+name = "fastrand"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e91b62f79061a0bc2e046024cb7ba44b08419ed238ecbd9adbd787434b9e8c25"
+checksum = "779d043b6a0b90cc4c0ed7ee380a6504394cee7efd7db050e3774eee387324b2"
 dependencies = [
- "autocfg",
+ "instant",
 ]
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.10"
+version = "0.1.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "725cf19794cf90aa94e65050cb4191ff5d8fa87a498383774c47b332e3af952e"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
 dependencies = [
  "libc",
 ]
@@ -278,43 +119,24 @@ dependencies = [
 
 [[package]]
 name = "humantime"
-version = "2.0.0"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9b6c53306532d3c8e8087b44e6580e10db51a023cf9b433cea2ac38066b92da"
-
-[[package]]
-name = "indexmap"
-version = "1.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e47a3566dd4fd4eec714ae6ceabdee0caec795be835c223d92c2d40f1e8cf1c"
-dependencies = [
- "autocfg",
- "hashbrown",
-]
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "instant"
-version = "0.1.7"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "63312a18f7ea8760cdd0a7c5aac1a619752a246b833545e3e36d1f81f7cd9e66"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if",
 ]
 
 [[package]]
 name = "itoa"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8b7a7c0c47db5545ed3fef7468ee7bb5b74691498139e4b3f6a20685dc6dd8e"
-
-[[package]]
-name = "jobserver"
-version = "0.1.21"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c71313ebb9439f74b00d9d2dcec36440beaf57a6aa0623068441dd7cd81a7f2"
-dependencies = [
- "libc",
-]
+checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
 
 [[package]]
 name = "lazy_static"
@@ -324,174 +146,40 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "lazycell"
-version = "1.2.1"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
+checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.77"
+version = "0.2.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2f96b10ec2560088a8e76961b00d47107b3a625fecb76dedb29ee7ccbf98235"
-
-[[package]]
-name = "lock_api"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0382880606dff6d15c9476c416d18690b72742aa7b605bb6dd6ec9030fbf07eb"
-dependencies = [
- "scopeguard",
-]
+checksum = "1b03d17f364a3a042d5e5d46b053bbbf82c92c9430c592dd4c064dc6ee997125"
 
 [[package]]
 name = "log"
-version = "0.4.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
-dependencies = [
- "cfg-if 0.1.10",
-]
-
-[[package]]
-name = "maybe-uninit"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
-
-[[package]]
-name = "md-5"
-version = "0.9.1"
+version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b5a279bb9607f9f53c22d496eade00d138d1bdcccd07d74650387cf94942a15"
+checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
 dependencies = [
- "block-buffer",
- "digest",
- "opaque-debug",
-]
-
-[[package]]
-name = "measureme"
-version = "9.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a98e07fe802486895addb2b5467f33f205e82c426bfaf350f5d8109b137767c"
-dependencies = [
- "log",
- "memmap",
- "parking_lot",
- "perf-event-open-sys",
- "rustc-hash",
- "smallvec",
+ "cfg-if",
 ]
 
 [[package]]
 name = "memchr"
-version = "2.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
-
-[[package]]
-name = "memmap"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6585fd95e7bb50d6cc31e20d4cf9afb4e2ba16c5846fc76793f11218da9c475b"
-dependencies = [
- "libc",
- "winapi",
-]
-
-[[package]]
-name = "memmap2"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "397d1a6d6d0563c0f5462bbdae662cf6c784edf5e828e40c7257f85d82bf56dd"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "memoffset"
-version = "0.5.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4fc2c02a7e374099d4ee95a193111f72d2110197fe200272371758f6c3643d8"
-dependencies = [
- "autocfg",
-]
-
-[[package]]
-name = "num_cpus"
-version = "1.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46203554f085ff89c235cd12f7075f3233af9b11ed7c9e16dfe2560d03313ce6"
-dependencies = [
- "hermit-abi",
- "libc",
-]
-
-[[package]]
-name = "opaque-debug"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
-
-[[package]]
-name = "parking_lot"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4893845fa2ca272e647da5d0e46660a314ead9c2fdd9a883aabc32e481a8733"
-dependencies = [
- "instant",
- "lock_api",
- "parking_lot_core",
-]
-
-[[package]]
-name = "parking_lot_core"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c361aa727dd08437f2f1447be8b59a33b0edd15e0fcee698f935613d9efbca9b"
-dependencies = [
- "cfg-if 0.1.10",
- "cloudabi",
- "instant",
- "libc",
- "redox_syscall 0.1.56",
- "smallvec",
- "winapi",
-]
-
-[[package]]
-name = "perf-event-open-sys"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce9bedf5da2c234fdf2391ede2b90fabf585355f33100689bc364a3ea558561a"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "ppv-lite86"
-version = "0.2.10"
+version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
+checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.10"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df246d292ff63439fea9bc8c0a270bed0e390d5ebd4db4ba15aba81111b5abe3"
+checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
 dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "psm"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "659ecfea2142a458893bb7673134bad50b752fea932349c213d6a23874ce3aa7"
-dependencies = [
- "cc",
-]
-
 [[package]]
 name = "quick-error"
 version = "1.2.3"
@@ -500,9 +188,9 @@ checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 
 [[package]]
 name = "quote"
-version = "1.0.3"
+version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2bdc6c187c65bca4260c9011c9e3132efe4909da44726bad24cf7572ae338d7f"
+checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
 dependencies = [
  "proc-macro2",
 ]
@@ -515,20 +203,13 @@ dependencies = [
  "clap",
  "derive_more",
  "env_logger",
- "humantime 2.0.0",
+ "humantime 2.1.0",
  "lazy_static",
  "lazycell",
  "log",
  "racer-cargo-metadata",
  "racer-testutils",
  "rls-span",
- "rustc-ap-rustc_ast",
- "rustc-ap-rustc_ast_pretty",
- "rustc-ap-rustc_data_structures",
- "rustc-ap-rustc_errors",
- "rustc-ap-rustc_parse",
- "rustc-ap-rustc_session",
- "rustc-ap-rustc_span",
 ]
 
 [[package]]
@@ -555,405 +236,85 @@ dependencies = [
  "tempfile",
 ]
 
-[[package]]
-name = "rand"
-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ef9e7e66b4468674bfcb0c81af8b7fa0bb154fa9f28eb840da5c447baeb8d7e"
-dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
-]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f0e00789804e99b20f12bc7003ca416309d28a6f495d6af58d1e2c2842461b5"
-dependencies = [
- "lazy_static",
-]
-
-[[package]]
-name = "typenum"
-version = "1.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "373c8a200f9e67a0c95e62a4f52fbf80c23b4381c05a17845531982fa99e6b33"
-
-[[package]]
-name = "unicode-normalization"
-version = "0.1.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5479532badd04e128284890390c1e876ef7a993d0570b3597ae43dfa1d59afa4"
-dependencies = [
- "smallvec",
-]
-
 [[package]]
 name = "unicode-width"
-version = "0.1.7"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
+checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
 
 [[package]]
 name = "unicode-xid"
-version = "0.2.0"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
+checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
 [[package]]
 name = "vec_map"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
-
-[[package]]
-name = "version_check"
-version = "0.9.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"
-
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
 [[package]]
 name = "winapi"
-version = "0.3.8"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
 dependencies = [
  "winapi-i686-pc-windows-gnu",
  "winapi-x86_64-pc-windows-gnu",
@@ -1196,9 +417,9 @@ checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
 [[package]]
 name = "winapi-util"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa515c5163a99cc82bab70fd3bfdd36d827be85de63737b40fcef2ce084a436e"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
 dependencies = [
  "winapi",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 62bc0778..4c30a63a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,34 +37,6 @@ version = "0.1"
 optional = true
 path = "metadata"
 
-[dependencies.rustc_ast_pretty]
-package = "rustc-ap-rustc_ast_pretty"
-version = "722.0.0"
-
-[dependencies.rustc_data_structures]
-package = "rustc-ap-rustc_data_structures"
-version = "722.0.0"
-
-[dependencies.rustc_errors]
-package = "rustc-ap-rustc_errors"
-version = "722.0.0"
-
-[dependencies.rustc_parse]
-package = "rustc-ap-rustc_parse"
-version = "722.0.0"
-
-[dependencies.rustc_session]
-package = "rustc-ap-rustc_session"
-version = "722.0.0"
-
-[dependencies.rustc_span]
-package = "rustc-ap-rustc_span"
-version = "722.0.0"
-
-[dependencies.rustc_ast]
-package = "rustc-ap-rustc_ast"
-version = "722.0.0"
-
 [dev-dependencies.racer-testutils]
 version = "0.1"
 path = "testutils"
@@ -77,3 +49,7 @@ nightly = []
 
 [workspace]
 members = ["interner", "metadata", "testutils"]
+
+[package.metadata.rust-analyzer]
+# This package uses #[feature(rustc_private)]
+rustc_private = true
diff --git a/README.md b/README.md
index 04fea7e8..6f29da2e 100644
--- a/README.md
+++ b/README.md
@@ -25,9 +25,13 @@ From 2.1, racer needs **nightly rust**
 
 If you're using rustup, run
 ```
-rustup toolchain add nightly
+rustup toolchain install nightly
+rustup component add rustc-dev --toolchain=nightly
 ```
 
+_Note: The second command adds the `rustc-dev` component to the nightly
+toolchain, which is necessary to compile Racer._
+
 #### Cargo
 Internally, racer calls cargo as a CLI tool, so please make sure cargo is installed
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index daab37ca..e753514a 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2021-06-06"
-components = ["rust-src"]
+channel = "nightly-2022-01-14"
+components = ["rust-src", "rustc-dev"]
diff --git a/src/racer/ast.rs b/src/racer/ast.rs
index ae68ae66..d71ac51d 100644
--- a/src/racer/ast.rs
+++ b/src/racer/ast.rs
@@ -46,7 +46,7 @@ where
     F: FnOnce(&mut Parser<'_>) -> Option<T>,
 {
     // FIXME: Set correct edition based on the edition of the target crate.
-    rustc_span::with_session_globals(Edition::Edition2018, || {
+    rustc_span::create_session_if_not_set_then(Edition::Edition2018, |_| {
         let codemap = Rc::new(SourceMap::new(source_map::FilePathMapping::empty()));
         // We use DummyEmitter here not to print error messages to stderr
         let handler = Handler::with_emitter(false, None, Box::new(DummyEmitter {}));
@@ -291,7 +291,7 @@ fn destructure_pattern_to_ty(
             }
             _ => panic!("Expecting TyTuple"),
         },
-        PatKind::TupleStruct(ref path, ref children) => {
+        PatKind::TupleStruct(_, ref path, ref children) => {
             let m = resolve_ast_path(path, &scope.filepath, scope.point, session)?;
             let contextty = path_to_match(ty.clone(), session);
             for (i, p) in children.iter().enumerate() {
@@ -314,7 +314,7 @@ fn destructure_pattern_to_ty(
             }
             None
         }
-        PatKind::Struct(ref path, ref children, _) => {
+        PatKind::Struct(_, ref path, ref children, _) => {
             let m = resolve_ast_path(path, &scope.filepath, scope.point, session)?;
             let contextty = path_to_match(ty.clone(), session);
             for child in children {
@@ -356,7 +356,7 @@ impl<'c, 's, 'ast> visit::Visitor<'ast> for LetTypeVisitor<'c, 's> {
     fn visit_local(&mut self, local: &ast::Local) {
         let ty = match &local.ty {
             Some(annon) => Ty::from_ast(&*annon, &self.scope),
-            None => local.init.as_ref().and_then(|initexpr| {
+            None => local.kind.init().as_ref().and_then(|initexpr| {
                 debug!("[LetTypeVisitor] initexpr is {:?}", initexpr.kind);
                 let mut v = ExprTypeVisitor::new(self.scope.clone(), self.session);
                 v.visit_expr(initexpr);
@@ -898,7 +898,7 @@ pub struct TypeVisitor<'s> {
 impl<'ast, 's> visit::Visitor<'ast> for TypeVisitor<'s> {
     fn visit_item(&mut self, item: &ast::Item) {
         if let ItemKind::TyAlias(ref ty_kind) = item.kind {
-            if let Some(ref ty) = ty_kind.3 {
+            if let Some(ref ty) = ty_kind.ty {
                 self.name = Some(item.ident.name.to_string());
                 self.type_ = Ty::from_ast(&ty, self.scope);
                 debug!("typevisitor type is {:?}", self.type_);
@@ -943,7 +943,7 @@ impl<'p> ImplVisitor<'p> {
 impl<'ast, 'p> visit::Visitor<'ast> for ImplVisitor<'p> {
     fn visit_item(&mut self, item: &ast::Item) {
         if let ItemKind::Impl(ref impl_kind) = item.kind {
-            let ast::ImplKind {
+            let ast::Impl {
                 ref generics,
                 ref of_trait,
                 ref self_ty,
@@ -1283,7 +1283,7 @@ where
     fn visit_item(&mut self, item: &ast::Item) {
         if let ItemKind::Trait(ref trait_kind) = item.kind {
             self.result = Some(TraitBounds::from_generic_bounds(
-                &trait_kind.3,
+                &trait_kind.bounds,
                 &self.file_path,
                 self.offset,
             ));
@@ -1338,7 +1338,7 @@ impl<'ast, 'r, 's> visit::Visitor<'ast> for IfLetVisitor<'r, 's> {
     fn visit_expr(&mut self, ex: &'ast ast::Expr) {
         match &ex.kind {
             ExprKind::If(let_stmt, ..) | ExprKind::While(let_stmt, ..) => {
-                if let ExprKind::Let(pat, expr) = &let_stmt.kind {
+                if let ExprKind::Let(pat, expr, _span) = &let_stmt.kind {
                     self.let_pat = Some(Pat::from_ast(&pat.kind, &self.scope));
                     let mut expr_visitor = ExprTypeVisitor::new(self.scope.clone(), self.session);
                     expr_visitor.visit_expr(expr);
diff --git a/src/racer/ast_types.rs b/src/racer/ast_types.rs
index c8b3f758..8bdeb51e 100644
--- a/src/racer/ast_types.rs
+++ b/src/racer/ast_types.rs
@@ -307,7 +307,7 @@ impl Pat {
         match pat {
             PatKind::Wild => Pat::Wild,
             PatKind::Ident(bi, ident, _) => Pat::Ident(*bi, ident.to_string()),
-            PatKind::Struct(path, fields, _) => {
+            PatKind::Struct(_, path, fields, _) => {
                 let path = Path::from_ast(path, scope);
                 let fields = fields
                     .iter()
@@ -315,7 +315,7 @@ impl Pat {
                     .collect();
                 Pat::Struct(path, fields)
             }
-            PatKind::TupleStruct(path, pats) => {
+            PatKind::TupleStruct(_, path, pats) => {
                 let path = Path::from_ast(path, scope);
                 let pats = pats
                     .iter()
diff --git a/src/racer/lib.rs b/src/racer/lib.rs
index cebb7fd2..485dae1d 100755
--- a/src/racer/lib.rs
+++ b/src/racer/lib.rs
@@ -1,6 +1,7 @@
 #![cfg_attr(feature = "nightly", feature(test))]
 #![feature(control_flow_enum)]
 #![feature(try_trait_v2)]
+#![feature(rustc_private)]
 
 #[macro_use]
 extern crate log;
@@ -12,6 +13,14 @@ extern crate bitflags;
 #[macro_use]
 extern crate derive_more;
 
+extern crate rustc_ast;
+extern crate rustc_ast_pretty;
+extern crate rustc_data_structures;
+extern crate rustc_errors;
+extern crate rustc_parse;
+extern crate rustc_session;
+extern crate rustc_span;
+
 #[macro_use]
 mod testutils;
 #[macro_use]
diff --git a/src/racer/snippets.rs b/src/racer/snippets.rs
index 4e3d35c8..abf91d16 100644
--- a/src/racer/snippets.rs
+++ b/src/racer/snippets.rs
@@ -59,7 +59,7 @@ impl MethodInfo {
         with_error_checking_parse(decorated, |p| {
             if let Ok(Some(Some(method))) = p.parse_impl_item(ForceCollect::No) {
                 if let AssocItemKind::Fn(ref fn_kind) = method.kind {
-                    let decl = &fn_kind.1.decl;
+                    let decl = &fn_kind.sig.decl;
                     return Some(MethodInfo {
                         // ident.as_str calls Ident.name.as_str
                         name: method.ident.name.to_string(),