1181 files changed, 26645 insertions, 14380 deletions

diff --git a/.gitattributes b/.gitattributes
index 2b4f3d4726..b223c8ac5f 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -4,7 +4,8 @@
 *.cpp rust
 *.h rust
 *.rs rust
+*.fixed linguist-language=Rust
 src/etc/installer/gfx/* binary
 *.woff binary
 src/vendor/** -text
-Cargo.lock -merge
+Cargo.lock -merge linguist-generated=false
diff --git a/.gitignore b/.gitignore
index efbbf22ffe..2f65ee3e77 100644
--- a/.gitignore
+++ b/.gitignore
@@ -74,13 +74,13 @@ __pycache__/
 /obj/
 /rt/
 /rustllvm/
-/src/libstd_unicode/DerivedCoreProperties.txt
-/src/libstd_unicode/DerivedNormalizationProps.txt
-/src/libstd_unicode/PropList.txt
-/src/libstd_unicode/ReadMe.txt
-/src/libstd_unicode/Scripts.txt
-/src/libstd_unicode/SpecialCasing.txt
-/src/libstd_unicode/UnicodeData.txt
+/src/libcore/unicode/DerivedCoreProperties.txt
+/src/libcore/unicode/DerivedNormalizationProps.txt
+/src/libcore/unicode/PropList.txt
+/src/libcore/unicode/ReadMe.txt
+/src/libcore/unicode/Scripts.txt
+/src/libcore/unicode/SpecialCasing.txt
+/src/libcore/unicode/UnicodeData.txt
 /stage[0-9]+/
 /target
 target/
diff --git a/.travis.yml b/.travis.yml
index 23c47bc9f7..9e62b895ed 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -197,7 +197,7 @@ env:
     # AWS_SECRET_ACCESS_KEY=...
     - secure: "j96XxTVOSUf4s4r4htIxn/fvIa5DWbMgLqWl7r8z2QfgUwscmkMXAwXuFNc7s7bGTpV/+CgDiMFFM6BAFLGKutytIF6oA02s9b+usQYnM0th7YQ2AIgm9GtMTJCJp4AoyfFmh8F2faUICBZlfVLUJ34udHEe35vOklix+0k4WDo="
     # TOOLSTATE_REPO_ACCESS_TOKEN=...
-    - secure: "cFh8thThqEJLC98XKI5pfqflUzOlxsYPRW20AWRaYOOgYHPTiGWypTXiPbGSKaeAXTZoOA+DpQtEmefc0U6lt9dHc7a/MIaK6isFurjlnKYiLOeTruzyu1z7PWCeZ/jKXsU2RK/88DBtlNwfMdaMIeuKj14IVfpepPPL71ETbuk="
+    - secure: "ESfcXqv4N2VMhqi2iIyw6da9VrsA78I4iR1asouCaq4hzTTrkB4WNRrfURy6xg72gQ4nMhtRJbB0/2jmc9Cu1+g2CzXtyiL223aJ5CKrXdcvbitopQSDfp07dMWm+UED+hNFEanpErKAeU/6FM3A+J+60PMk8MCF1h9tqNRISJw="
 
 before_install:
   # We'll use the AWS cli to download/upload cached docker layers, so install
diff --git a/RELEASES.md b/RELEASES.md
index 26dd5a5c7f..758de62a84 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,3 +1,27 @@
+Version 1.26.1 (2018-05-29)
+==========================
+
+Tools
+-----
+
+- [RLS now works on Windows][50646]
+- [Rustfmt stopped badly formatting text in some cases][rustfmt/2695]
+
+Compatibility Notes
+--------
+
+- [`fn main() -> impl Trait` no longer works for non-Termination
+  trait][50656]
+  This reverts an accidental stabilization.
+- [`NaN > NaN` no longer returns true in const-fn contexts][50812]
+- [Prohibit using turbofish for `impl Trait` in method arguments][50950]
+
+[50646]: https://github.com/rust-lang/rust/issues/50646
+[50656]: https://github.com/rust-lang/rust/pull/50656
+[50812]: https://github.com/rust-lang/rust/pull/50812
+[50950]: https://github.com/rust-lang/rust/issues/50950
+[rustfmt/2695]: https://github.com/rust-lang-nursery/rustfmt/issues/2695
+
 Version 1.26.0 (2018-05-10)
 ==========================
 
diff --git a/appveyor.yml b/appveyor.yml
index 60f5b4be8d..b1e2e1545c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -6,7 +6,7 @@ environment:
     secure: 7Y+JiquYedOAgnUU26uL0DPzrxmTtR+qIwG6rNKSuWDffqU3vVZxbGXim9QpTO80
   SCCACHE_DIGEST: f808afabb4a4eb1d7112bcb3fa6be03b61e93412890c88e177c667eb37f46353d7ec294e559b16f9f4b5e894f2185fe7670a0df15fd064889ecbd80f0c34166c
   TOOLSTATE_REPO_ACCESS_TOKEN:
-    secure: PTZiSxJMVUZ0VnMR5i13E4OagbXfglj7pcskDQiKufVrDm13mLoI0vDJAEM35+bY
+    secure: gKGlVktr7iuqCoYSxHxDE9ltLOKU0nYDEuQxvWbNxUIW7ri5ppn8L06jQzN0GGzN
 
   # By default schannel checks revocation of certificates unlike some other SSL
   # backends, but we've historically had problems on CI where a revocation
diff --git a/src/Cargo.lock b/src/Cargo.lock
index 2f52c88955..d61f007b6a 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -79,7 +79,7 @@ dependencies = [
 
 [[package]]
 name = "assert_cli"
-version = "0.5.6"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "colored 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -190,13 +190,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cargo"
-version = "0.28.0"
+version = "0.29.0"
 dependencies = [
  "atty 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "bufstream 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.31.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "crates-io 0.16.0",
+ "core-foundation 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crates-io 0.17.0",
  "crossbeam 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "crypto-hash 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "curl 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -262,6 +262,23 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "chalk-engine"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "chalk-macros 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "chalk-macros"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "chrono"
 version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -288,12 +305,12 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.0.200"
+version = "0.0.202"
 dependencies = [
  "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cargo_metadata 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy-mini-macro-test 0.2.0",
- "clippy_lints 0.0.200",
+ "clippy_lints 0.0.202",
  "compiletest_rs 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "derive-new 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -310,8 +327,7 @@ version = "0.2.0"
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.197"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+version = "0.0.202"
 dependencies = [
  "cargo_metadata 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "if_chain 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -320,7 +336,7 @@ dependencies = [
  "matches 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pulldown-cmark 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -331,7 +347,8 @@ dependencies = [
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.200"
+version = "0.0.205"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cargo_metadata 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "if_chain 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -402,7 +419,7 @@ dependencies = [
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustfix 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustfix 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -440,24 +457,21 @@ dependencies = [
 
 [[package]]
 name = "core-foundation"
-version = "0.5.1"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-foundation-sys 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "core-foundation-sys"
-version = "0.5.1"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "crates-io"
-version = "0.16.0"
+version = "0.17.0"
 dependencies = [
  "curl 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -544,6 +558,11 @@ dependencies = [
 ]
 
 [[package]]
+name = "datafrog"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "debug_unreachable"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -609,7 +628,7 @@ dependencies = [
 
 [[package]]
 name = "ena"
-version = "0.9.2"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -950,6 +969,16 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "isatty"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "itertools"
 version = "0.7.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1000,7 +1029,7 @@ dependencies = [
 
 [[package]]
 name = "languageserver-types"
-version = "0.39.0"
+version = "0.41.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1189,6 +1218,14 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "minifier"
+version = "0.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "regex 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "miniz-sys"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1417,6 +1454,15 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "polonius-engine"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "datafrog 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "precomputed-hash"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1491,16 +1537,17 @@ dependencies = [
 
 [[package]]
 name = "racer"
-version = "2.0.13"
+version = "2.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "clap 2.31.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "humantime 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex_errors 0.52.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex_syntax 0.52.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "toml 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1550,7 +1597,7 @@ dependencies = [
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1632,43 +1679,44 @@ dependencies = [
 
 [[package]]
 name = "rls"
-version = "0.127.0"
+version = "0.128.0"
 dependencies = [
- "cargo 0.28.0",
+ "cargo 0.29.0",
  "cargo_metadata 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy_lints 0.0.197 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.205 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "json 0.11.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 8.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "languageserver-types 0.39.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "languageserver-types 0.41.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "racer 2.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "racer 2.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-analysis 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-analysis 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-blacklist 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-data 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-rustc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-data 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-rustc 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-vfs 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustfmt-nightly 0.6.1",
+ "rustfmt-nightly 0.8.2",
  "serde 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "walkdir 2.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rls-analysis"
-version = "0.12.1"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "derive-new 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "radix_trie 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-data 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-data 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1680,7 +1728,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "rls-data"
-version = "0.15.0"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1691,7 +1739,7 @@ dependencies = [
 
 [[package]]
 name = "rls-rustc"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1709,7 +1757,7 @@ name = "rls-vfs"
 version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "racer 2.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "racer 2.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1729,12 +1777,14 @@ dependencies = [
  "backtrace 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chalk-engine 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fmt_macros 0.0.0",
  "graphviz 0.0.0",
  "jobserver 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polonius-engine 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc_macro 0.0.0",
  "rustc_apfloat 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -1747,87 +1797,92 @@ dependencies = [
 ]
 
 [[package]]
+name = "rustc-ap-arena"
+version = "147.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rustc-ap-rustc_data_structures 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "rustc-ap-rustc_cratesio_shim"
-version = "113.0.0"
+version = "147.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_data_structures"
-version = "113.0.0"
+version = "147.0.0"
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- "rustc-ap-serialize 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_cratesio_shim 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-rayon 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
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- "term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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- "term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_cratesio_shim 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "113.0.0"
+version = "147.0.0"
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 [[package]]
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-version = "113.0.0"
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 dependencies = [
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- "rustc-ap-rustc_data_structures 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_errors 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_target 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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- "rustc-ap-syntax_pos 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_errors 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_target 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-syntax_pos 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "scoped-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "113.0.0"
+version = "147.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rustc-ap-rustc_data_structures 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-serialize 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-arena 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "scoped-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
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 ]
 
@@ -1837,6 +1892,14 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "rustc-hash"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "rustc-main"
 version = "0.0.0"
 dependencies = [
@@ -1916,6 +1979,52 @@ dependencies = [
 ]
 
 [[package]]
+name = "rustc_codegen_llvm"
+version = "0.0.0"
+dependencies = [
+ "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc 0.0.0",
+ "rustc-demangle 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_allocator 0.0.0",
+ "rustc_apfloat 0.0.0",
+ "rustc_codegen_utils 0.0.0",
+ "rustc_data_structures 0.0.0",
+ "rustc_errors 0.0.0",
+ "rustc_incremental 0.0.0",
+ "rustc_llvm 0.0.0",
+ "rustc_mir 0.0.0",
+ "rustc_platform_intrinsics 0.0.0",
+ "rustc_target 0.0.0",
+ "serialize 0.0.0",
+ "syntax 0.0.0",
+ "syntax_pos 0.0.0",
+ "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rustc_codegen_utils"
+version = "0.0.0"
+dependencies = [
+ "ar 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc 0.0.0",
+ "rustc_data_structures 0.0.0",
+ "rustc_incremental 0.0.0",
+ "rustc_mir 0.0.0",
+ "rustc_target 0.0.0",
+ "syntax 0.0.0",
+ "syntax_pos 0.0.0",
+]
+
+[[package]]
 name = "rustc_cratesio_shim"
 version = "0.0.0"
 dependencies = [
@@ -1928,10 +2037,11 @@ name = "rustc_data_structures"
 version = "0.0.0"
 dependencies = [
  "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "ena 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ena 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot_core 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-rayon 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_cratesio_shim 0.0.0",
  "serialize 0.0.0",
@@ -1951,6 +2061,7 @@ dependencies = [
  "rustc-rayon 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_allocator 0.0.0",
  "rustc_borrowck 0.0.0",
+ "rustc_codegen_utils 0.0.0",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
  "rustc_incremental 0.0.0",
@@ -1964,7 +2075,6 @@ dependencies = [
  "rustc_save_analysis 0.0.0",
  "rustc_target 0.0.0",
  "rustc_traits 0.0.0",
- "rustc_trans_utils 0.0.0",
  "rustc_typeck 0.0.0",
  "scoped-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
@@ -2058,9 +2168,11 @@ dependencies = [
  "arena 0.0.0",
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "graphviz 0.0.0",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log_settings 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polonius-engine 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_apfloat 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -2140,7 +2252,7 @@ name = "rustc_save_analysis"
 version = "0.0.0"
 dependencies = [
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-data 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-data 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
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  "rustc 0.0.0",
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@@ -2166,6 +2278,7 @@ name = "rustc_traits"
 version = "0.0.0"
 dependencies = [
  "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "chalk-engine 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "graphviz 0.0.0",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2175,52 +2288,6 @@ dependencies = [
 ]
 
 [[package]]
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-version = "0.0.0"
-dependencies = [
- "bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
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- "syntax 0.0.0",
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- "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
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-
-[[package]]
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-version = "0.0.0"
-dependencies = [
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- "syntax_pos 0.0.0",
-]
-
-[[package]]
 name = "rustc_tsan"
 version = "0.0.0"
 dependencies = [
@@ -2260,6 +2327,7 @@ dependencies = [
 name = "rustdoc"
 version = "0.0.0"
 dependencies = [
+ "minifier 0.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "pulldown-cmark 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
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 ]
@@ -2277,10 +2345,11 @@ dependencies = [
 
 [[package]]
 name = "rustfix"
-version = "0.2.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "quick-error 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2288,29 +2357,28 @@ dependencies = [
 
 [[package]]
 name = "rustfmt-nightly"
-version = "0.6.1"
+version = "0.8.2"
 dependencies = [
- "assert_cli 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "assert_cli 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
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  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "isatty 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
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- "rustc-ap-syntax 113.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_target 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-syntax 147.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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- "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2756,14 +2824,6 @@ dependencies = [
 
 [[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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-]
-
-[[package]]
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@@ -2988,7 +3048,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
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-"checksum assert_cli 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "4c8ca6beaa44a3520407b28a4a779a19b1364fcadcb2f258c41a7baf3102ced0"
+"checksum assert_cli 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5da59dbd8df54562665b925b427221ceda9b771408cb8a6cbd2125d3b001330b"
 "checksum atty 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "af80143d6f7608d746df1520709e5d141c96f240b0e62b0aa41bdfb53374d9d4"
 "checksum backtrace 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "ebbe525f66f42d207968308ee86bc2dd60aa5fab535b22e616323a173d097d8e"
 "checksum backtrace-sys 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "44585761d6161b0f57afc49482ab6bd067e4edef48c12a152c237eb0203f7661"
@@ -3000,16 +3060,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum cargo_metadata 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "6ebd6272a2ca4fd39dbabbd6611eb03df45c2259b3b80b39a9ff8fbdcf42a4b3"
 "checksum cc 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)" = "0ebb87d1116151416c0cf66a0e3fb6430cccd120fd6300794b4dfaa050ac40ba"
 "checksum cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d4c819a1287eb618df47cc647173c5c4c66ba19d888a6e50d605672aed3140de"
+"checksum chalk-engine 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a146c19172c7eea48ea55a7123ac95da786639bc665097f1e14034ee5f1d8699"
+"checksum chalk-macros 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "295635afd6853aa9f20baeb7f0204862440c0fe994c5a253d5f479dac41d047e"
 "checksum chrono 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ba5f60682a4c264e7f8d77b82e7788938a76befdf949d4a98026d19099c9d873"
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 "checksum schannel 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "85fd9df495640643ad2d00443b3d78aae69802ad488debab4f1dd52fc1806ade"
 "checksum scoped-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8674d439c964889e2476f474a3bf198cc9e199e77499960893bac5de7e9218a4"
@@ -3189,7 +3257,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum textwrap 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c0b59b6b4b44d867f1370ef1bd91bfb262bf07bf0ae65c202ea2fbc16153b693"
 "checksum thread_local 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "279ef31c19ededf577bfd12dfae728040a21f635b06a24cd670ff510edd38963"
 "checksum time 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "a15375f1df02096fb3317256ce2cee6a1f42fc84ea5ad5fc8c421cfe40c73098"
-"checksum toml 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "736b60249cb25337bc196faa43ee12c705e426f3d55c214d73a4e7be06f92cb4"
 "checksum toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "a0263c6c02c4db6c8f7681f9fd35e90de799ebd4cfdeab77a38f4ff6b3d8c0d9"
 "checksum toml-query 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6854664bfc6df0360c695480836ee90e2d0c965f06db291d10be9344792d43e8"
 "checksum ucd-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fd2be2d6639d0f8fe6cdda291ad456e23629558d466e2789d2c3e9892bda285d"
diff --git a/src/Cargo.toml b/src/Cargo.toml
index 35858ee286..8ce4c97601 100644
--- a/src/Cargo.toml
+++ b/src/Cargo.toml
@@ -4,7 +4,7 @@ members = [
   "rustc",
   "libstd",
   "libtest",
-  "librustc_trans",
+  "librustc_codegen_llvm",
   "tools/cargotest",
   "tools/clippy",
   "tools/compiletest",
@@ -40,6 +40,13 @@ members = [
   "tools/rls/test_data/workspace_symbol",
 ]
 
+# Curiously, libtest will segfault if compiled with opt-level=3
+# with some versions of XCode: https://github.com/rust-lang/rust/issues/50867
+[profile.release]
+opt-level = 2
+[profile.bench]
+opt-level = 2
+
 # These options are controlled from our rustc wrapper script, so turn them off
 # here and have them controlled elsewhere.
 [profile.dev]
@@ -64,4 +71,3 @@ cargo = { path = "tools/cargo" }
 # RLS depends on `rustfmt` from crates.io, so we put this in a `[patch]` section
 # for crates.io
 rustfmt-nightly = { path = "tools/rustfmt" }
-clippy_lints = { path = "tools/clippy/clippy_lints" }
diff --git a/src/bootstrap/bin/rustc.rs b/src/bootstrap/bin/rustc.rs
index 76d0e6e28a..6f27402233 100644
--- a/src/bootstrap/bin/rustc.rs
+++ b/src/bootstrap/bin/rustc.rs
@@ -268,15 +268,6 @@ fn main() {
         if let Ok(host_linker) = env::var("RUSTC_HOST_LINKER") {
             cmd.arg(format!("-Clinker={}", host_linker));
         }
-
-        if let Ok(s) = env::var("RUSTC_HOST_CRT_STATIC") {
-            if s == "true" {
-                cmd.arg("-C").arg("target-feature=+crt-static");
-            }
-            if s == "false" {
-                cmd.arg("-C").arg("target-feature=-crt-static");
-            }
-        }
     }
 
     if env::var_os("RUSTC_PARALLEL_QUERIES").is_some() {
@@ -297,7 +288,12 @@ fn main() {
     }
 
     if verbose > 1 {
-        eprintln!("rustc command: {:?}", cmd);
+        eprintln!(
+            "rustc command: {:?}={:?} {:?}",
+            bootstrap::util::dylib_path_var(),
+            env::join_paths(&dylib_path).unwrap(),
+            cmd,
+        );
         eprintln!("sysroot: {:?}", sysroot);
         eprintln!("libdir: {:?}", libdir);
     }
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 28f5192f2c..487440becf 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -489,7 +489,7 @@ class RustBuild(object):
         """
         return os.path.join(self.build_dir, self.build, "stage0")
 
-    def get_toml(self, key, section=None):
+    def get_toml(self, key):
         """Returns the value of the given key in config.toml, otherwise returns None
 
         >>> rb = RustBuild()
@@ -501,29 +501,12 @@ class RustBuild(object):
 
         >>> rb.get_toml("key3") is None
         True
-
-        Optionally also matches the section the key appears in
-
-        >>> rb.config_toml = '[a]\\nkey = "value1"\\n[b]\\nkey = "value2"'
-        >>> rb.get_toml('key', 'a')
-        'value1'
-        >>> rb.get_toml('key', 'b')
-        'value2'
-        >>> rb.get_toml('key', 'c') is None
-        True
         """
-
-        cur_section = None
         for line in self.config_toml.splitlines():
-            section_match = re.match(r'^\s*\[(.*)\]\s*$', line)
-            if section_match is not None:
-                cur_section = section_match.group(1)
-
             match = re.match(r'^{}\s*=(.*)$'.format(key), line)
             if match is not None:
                 value = match.group(1)
-                if section is None or section == cur_section:
-                    return self.get_string(value) or value.strip()
+                return self.get_string(value) or value.strip()
         return None
 
     def cargo(self):
@@ -606,17 +589,7 @@ class RustBuild(object):
         env["LIBRARY_PATH"] = os.path.join(self.bin_root(), "lib") + \
             (os.pathsep + env["LIBRARY_PATH"]) \
             if "LIBRARY_PATH" in env else ""
-        env["RUSTFLAGS"] = "-Cdebuginfo=2 "
-
-        build_section = "target.{}".format(self.build_triple())
-        target_features = []
-        if self.get_toml("crt-static", build_section) == "true":
-            target_features += ["+crt-static"]
-        elif self.get_toml("crt-static", build_section) == "false":
-            target_features += ["-crt-static"]
-        if target_features:
-            env["RUSTFLAGS"] += "-C target-feature=" + (",".join(target_features)) + " "
-
+        env["RUSTFLAGS"] = "-Cdebuginfo=2"
         env["PATH"] = os.path.join(self.bin_root(), "bin") + \
             os.pathsep + env["PATH"]
         if not os.path.isfile(self.cargo()):
diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs
index 17f19222e6..f84ddf8a17 100644
--- a/src/bootstrap/builder.rs
+++ b/src/bootstrap/builder.rs
@@ -352,8 +352,8 @@ impl<'a> Builder<'a> {
             Kind::Bench => describe!(test::Crate, test::CrateLibrustc),
             Kind::Doc => describe!(doc::UnstableBook, doc::UnstableBookGen, doc::TheBook,
                 doc::Standalone, doc::Std, doc::Test, doc::WhitelistedRustc, doc::Rustc,
-                doc::ErrorIndex, doc::Nomicon, doc::Reference, doc::Rustdoc, doc::RustByExample,
-                doc::RustcBook, doc::CargoBook),
+                doc::Rustdoc, doc::ErrorIndex, doc::Nomicon, doc::Reference, doc::RustdocBook,
+                doc::RustByExample, doc::RustcBook, doc::CargoBook),
             Kind::Dist => describe!(dist::Docs, dist::RustcDocs, dist::Mingw, dist::Rustc,
                 dist::DebuggerScripts, dist::Std, dist::Analysis, dist::Src,
                 dist::PlainSourceTarball, dist::Cargo, dist::Rls, dist::Rustfmt, dist::Extended,
@@ -584,15 +584,22 @@ impl<'a> Builder<'a> {
             cargo.env("RUST_CHECK", "1");
         }
 
-        // If we were invoked from `make` then that's already got a jobserver
-        // set up for us so no need to tell Cargo about jobs all over again.
-        if env::var_os("MAKEFLAGS").is_none() && env::var_os("MFLAGS").is_none() {
-             cargo.arg("-j").arg(self.jobs().to_string());
-        }
+        cargo.arg("-j").arg(self.jobs().to_string());
+        // Remove make-related flags to ensure Cargo can correctly set things up
+        cargo.env_remove("MAKEFLAGS");
+        cargo.env_remove("MFLAGS");
 
         // FIXME: Temporary fix for https://github.com/rust-lang/cargo/issues/3005
         // Force cargo to output binaries with disambiguating hashes in the name
-        cargo.env("__CARGO_DEFAULT_LIB_METADATA", &self.config.channel);
+        let metadata = if compiler.stage == 0 {
+            // Treat stage0 like special channel, whether it's a normal prior-
+            // release rustc or a local rebuild with the same version, so we
+            // never mix these libraries by accident.
+            "bootstrap"
+        } else {
+            &self.config.channel
+        };
+        cargo.env("__CARGO_DEFAULT_LIB_METADATA", &metadata);
 
         let stage;
         if compiler.stage == 0 && self.local_rebuild {
@@ -690,10 +697,6 @@ impl<'a> Builder<'a> {
             cargo.env("RUSTC_CRT_STATIC", x.to_string());
         }
 
-        if let Some(x) = self.crt_static(compiler.host) {
-            cargo.env("RUSTC_HOST_CRT_STATIC", x.to_string());
-        }
-
         // Enable usage of unstable features
         cargo.env("RUSTC_BOOTSTRAP", "1");
         self.add_rust_test_threads(&mut cargo);
@@ -836,7 +839,7 @@ impl<'a> Builder<'a> {
         // default via `-ldylib=winapi_foo`. That is, they're linked with the
         // `dylib` type with a `winapi_` prefix (so the winapi ones don't
         // conflict with the system MinGW ones). This consequently means that
-        // the binaries we ship of things like rustc_trans (aka the rustc_trans
+        // the binaries we ship of things like rustc_codegen_llvm (aka the rustc_codegen_llvm
         // DLL) when linked against *again*, for example with procedural macros
         // or plugins, will trigger the propagation logic of `-ldylib`, passing
         // `-lwinapi_foo` to the linker again. This isn't actually available in
@@ -1453,6 +1456,7 @@ mod __test {
             rustc_args: vec![],
             fail_fast: true,
             doc_tests: DocTests::No,
+            bless: false,
         };
 
         let build = Build::new(config);
diff --git a/src/bootstrap/channel.rs b/src/bootstrap/channel.rs
index 3453933a96..a2495f68c1 100644
--- a/src/bootstrap/channel.rs
+++ b/src/bootstrap/channel.rs
@@ -24,7 +24,7 @@ use Build;
 use config::Config;
 
 // The version number
-pub const CFG_RELEASE_NUM: &str = "1.27.0";
+pub const CFG_RELEASE_NUM: &str = "1.28.0";
 
 pub struct GitInfo {
     inner: Option<Info>,
diff --git a/src/bootstrap/check.rs b/src/bootstrap/check.rs
index 64354ae29a..a516af58b1 100644
--- a/src/bootstrap/check.rs
+++ b/src/bootstrap/check.rs
@@ -118,7 +118,7 @@ impl Step for CodegenBackend {
     const DEFAULT: bool = true;
 
     fn should_run(run: ShouldRun) -> ShouldRun {
-        run.all_krates("rustc_trans")
+        run.all_krates("rustc_codegen_llvm")
     }
 
     fn make_run(run: RunConfig) {
@@ -139,12 +139,12 @@ impl Step for CodegenBackend {
 
         let mut cargo = builder.cargo(compiler, Mode::Librustc, target, "check");
         let features = builder.rustc_features().to_string();
-        cargo.arg("--manifest-path").arg(builder.src.join("src/librustc_trans/Cargo.toml"));
+        cargo.arg("--manifest-path").arg(builder.src.join("src/librustc_codegen_llvm/Cargo.toml"));
         rustc_cargo_env(builder, &mut cargo);
 
         // We won't build LLVM if it's not available, as it shouldn't affect `check`.
 
-        let _folder = builder.fold_output(|| format!("stage{}-rustc_trans", compiler.stage));
+        let _folder = builder.fold_output(|| format!("stage{}-rustc_codegen_llvm", compiler.stage));
         run_cargo(builder,
                   cargo.arg("--features").arg(features),
                   &codegen_backend_stamp(builder, compiler, target, backend),
@@ -259,14 +259,14 @@ pub fn librustc_stamp(builder: &Builder, compiler: Compiler, target: Interned<St
     builder.cargo_out(compiler, Mode::Librustc, target).join(".librustc-check.stamp")
 }
 
-/// Cargo's output path for librustc_trans in a given stage, compiled by a particular
+/// Cargo's output path for librustc_codegen_llvm in a given stage, compiled by a particular
 /// compiler for the specified target and backend.
 fn codegen_backend_stamp(builder: &Builder,
                          compiler: Compiler,
                          target: Interned<String>,
                          backend: Interned<String>) -> PathBuf {
     builder.cargo_out(compiler, Mode::Librustc, target)
-         .join(format!(".librustc_trans-{}-check.stamp", backend))
+         .join(format!(".librustc_codegen_llvm-{}-check.stamp", backend))
 }
 
 /// Cargo's output path for rustdoc in a given stage, compiled by a particular
diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index 1248c2b50b..231ed9d40d 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -603,7 +603,7 @@ impl Step for CodegenBackend {
     const DEFAULT: bool = true;
 
     fn should_run(run: ShouldRun) -> ShouldRun {
-        run.all_krates("rustc_trans")
+        run.all_krates("rustc_codegen_llvm")
     }
 
     fn make_run(run: RunConfig) {
@@ -637,7 +637,7 @@ impl Step for CodegenBackend {
         let mut cargo = builder.cargo(compiler, Mode::Librustc, target, "build");
         let mut features = builder.rustc_features().to_string();
         cargo.arg("--manifest-path")
-            .arg(builder.src.join("src/librustc_trans/Cargo.toml"));
+            .arg(builder.src.join("src/librustc_codegen_llvm/Cargo.toml"));
         rustc_cargo_env(builder, &mut cargo);
 
         features += &build_codegen_backend(&builder, &mut cargo, &compiler, target, backend);
@@ -645,7 +645,7 @@ impl Step for CodegenBackend {
         let tmp_stamp = builder.cargo_out(compiler, Mode::Librustc, target)
             .join(".tmp.stamp");
 
-        let _folder = builder.fold_output(|| format!("stage{}-rustc_trans", compiler.stage));
+        let _folder = builder.fold_output(|| format!("stage{}-rustc_codegen_llvm", compiler.stage));
         let files = run_cargo(builder,
                               cargo.arg("--features").arg(features),
                               &tmp_stamp,
@@ -656,7 +656,7 @@ impl Step for CodegenBackend {
         let mut files = files.into_iter()
             .filter(|f| {
                 let filename = f.file_name().unwrap().to_str().unwrap();
-                is_dylib(filename) && filename.contains("rustc_trans-")
+                is_dylib(filename) && filename.contains("rustc_codegen_llvm-")
             });
         let codegen_backend = match files.next() {
             Some(f) => f,
@@ -697,7 +697,7 @@ pub fn build_codegen_backend(builder: &Builder,
                      compiler.stage, &compiler.host, target, backend));
 
             // Pass down configuration from the LLVM build into the build of
-            // librustc_llvm and librustc_trans.
+            // librustc_llvm and librustc_codegen_llvm.
             if builder.is_rust_llvm(target) {
                 cargo.env("LLVM_RUSTLLVM", "1");
             }
@@ -762,7 +762,7 @@ fn copy_codegen_backends_to_sysroot(builder: &Builder,
         t!(t!(File::open(&stamp)).read_to_string(&mut dylib));
         let file = Path::new(&dylib);
         let filename = file.file_name().unwrap().to_str().unwrap();
-        // change `librustc_trans-xxxxxx.so` to `librustc_trans-llvm.so`
+        // change `librustc_codegen_llvm-xxxxxx.so` to `librustc_codegen_llvm-llvm.so`
         let target_filename = {
             let dash = filename.find("-").unwrap();
             let dot = filename.find(".").unwrap();
@@ -808,14 +808,14 @@ pub fn librustc_stamp(builder: &Builder, compiler: Compiler, target: Interned<St
     builder.cargo_out(compiler, Mode::Librustc, target).join(".librustc.stamp")
 }
 
-/// Cargo's output path for librustc_trans in a given stage, compiled by a particular
+/// Cargo's output path for librustc_codegen_llvm in a given stage, compiled by a particular
 /// compiler for the specified target and backend.
 fn codegen_backend_stamp(builder: &Builder,
                          compiler: Compiler,
                          target: Interned<String>,
                          backend: Interned<String>) -> PathBuf {
     builder.cargo_out(compiler, Mode::Librustc, target)
-        .join(format!(".librustc_trans-{}.stamp", backend))
+        .join(format!(".librustc_codegen_llvm-{}.stamp", backend))
 }
 
 pub fn compiler_file(builder: &Builder,
@@ -972,7 +972,7 @@ impl Step for Assemble {
 
         // Link the compiler binary itself into place
         let out_dir = builder.cargo_out(build_compiler, Mode::Librustc, host);
-        let rustc = out_dir.join(exe("rustc", &*host));
+        let rustc = out_dir.join(exe("rustc_binary", &*host));
         let bindir = sysroot.join("bin");
         t!(fs::create_dir_all(&bindir));
         let compiler = builder.rustc(target_compiler);
diff --git a/src/bootstrap/doc.rs b/src/bootstrap/doc.rs
index 16f4b29dcc..cb22993852 100644
--- a/src/bootstrap/doc.rs
+++ b/src/bootstrap/doc.rs
@@ -28,7 +28,7 @@ use build_helper::up_to_date;
 
 use util::symlink_dir;
 use builder::{Builder, Compiler, RunConfig, ShouldRun, Step};
-use tool::Tool;
+use tool::{self, prepare_tool_cargo, Tool};
 use compile;
 use cache::{INTERNER, Interned};
 use config::Config;
@@ -70,7 +70,7 @@ macro_rules! book {
 book!(
     Nomicon, "src/doc/nomicon", "nomicon";
     Reference, "src/doc/reference", "reference";
-    Rustdoc, "src/doc/rustdoc", "rustdoc";
+    RustdocBook, "src/doc/rustdoc", "rustdoc";
     RustcBook, "src/doc/rustc", "rustc";
     RustByExample, "src/doc/rust-by-example", "rust-by-example";
 );
@@ -272,6 +272,12 @@ impl Step for TheBook {
             name: INTERNER.intern_string(format!("{}/second-edition", name)),
         });
 
+        // build book 2018 edition
+        builder.ensure(Rustbook {
+            target,
+            name: INTERNER.intern_string(format!("{}/2018-edition", name)),
+        });
+
         // build the version info page and CSS
         builder.ensure(Standalone {
             compiler,
@@ -665,8 +671,12 @@ impl Step for Rustc {
         let stage = self.stage;
         let target = self.target;
         builder.info(&format!("Documenting stage{} compiler ({})", stage, target));
+
+        // This is the intended out directory for compiler documentation.
         let out = builder.compiler_doc_out(target);
         t!(fs::create_dir_all(&out));
+
+        // Get the correct compiler for this stage.
         let compiler = builder.compiler(stage, builder.config.build);
         let rustdoc = builder.rustdoc(compiler.host);
         let compiler = if builder.force_use_stage1(compiler, target) {
@@ -676,21 +686,23 @@ impl Step for Rustc {
         };