remove unneeded `extern crate`s from build tools

28 files changed, 81 insertions, 75 deletions

diff --git a/Cargo.lock b/Cargo.lock
index ff66b4a0372..a7c806ad481 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -29,7 +29,7 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "html5ever 0.22.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "maplit 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tendril 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -170,13 +170,12 @@ dependencies = [
  "cmake 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "filetime 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "petgraph 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.82 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.81 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -192,7 +191,6 @@ name = "build-manifest"
 version = "0.1.0"
 dependencies = [
  "serde 1.0.82 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.81 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -266,7 +264,7 @@ dependencies = [
  "ignore 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "im-rc 12.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "libgit2-sys 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -374,7 +372,7 @@ dependencies = [
  "clippy_lints 0.0.212",
  "compiletest_rs 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "derive-new 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-workspace-hack 1.0.0",
  "rustc_tools_util 0.1.1",
@@ -394,7 +392,7 @@ dependencies = [
  "cargo_metadata 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "if_chain 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "pulldown-cmark 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -465,14 +463,13 @@ dependencies = [
  "env_logger 0.5.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "filetime 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustfix 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.82 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.81 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -592,7 +589,7 @@ dependencies = [
  "arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -606,7 +603,7 @@ dependencies = [
  "arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-utils 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -751,7 +748,7 @@ name = "elasticlunr-rs"
 version = "2.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.82 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.81 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1032,7 +1029,7 @@ name = "handlebars"
 version = "0.32.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest_derive 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1047,7 +1044,7 @@ name = "handlebars"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest_derive 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1143,7 +1140,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "globset 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1169,7 +1166,7 @@ dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "flate2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tar 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1265,7 +1262,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lazy_static"
-version = "1.2.0"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1354,7 +1351,7 @@ name = "log_settings"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1441,7 +1438,7 @@ dependencies = [
  "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "handlebars 0.32.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "open 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1469,7 +1466,7 @@ dependencies = [
  "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "handlebars 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "open 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1703,7 +1700,7 @@ dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1971,7 +1968,7 @@ dependencies = [
  "bit-set 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2045,7 +2042,7 @@ dependencies = [
  "derive_more 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "humantime 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-ap-syntax 407.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2141,7 +2138,7 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2243,7 +2240,7 @@ dependencies = [
  "home 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 10.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "lsp-codec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lsp-types 0.57.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2349,7 +2346,7 @@ dependencies = [
  "fmt_macros 0.0.0",
  "graphviz 0.0.0",
  "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "measureme 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2402,7 +2399,7 @@ dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ena 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-ap-graphviz 407.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2532,7 +2529,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2543,7 +2540,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2702,7 +2699,7 @@ dependencies = [
  "ena 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "graphviz 0.0.0",
  "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3097,7 +3094,7 @@ dependencies = [
  "getopts 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "ignore 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-ap-rustc_target 407.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3143,7 +3140,7 @@ name = "schannel"
 version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3313,7 +3310,7 @@ name = "string_cache"
 version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "new_debug_unreachable 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf_shared 0.7.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "precomputed-hash 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3404,7 +3401,7 @@ name = "syntax"
 version = "0.0.0"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_data_structures 0.0.0",
  "rustc_errors 0.0.0",
@@ -3549,7 +3546,7 @@ name = "thread_local"
 version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3558,7 +3555,6 @@ version = "0.1.0"
 dependencies = [
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.82 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.81 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.33 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3664,7 +3660,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-utils 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3783,7 +3779,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "is-match 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3795,7 +3791,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "is-match 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -4160,7 +4156,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum jsonrpc-core 10.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a5152c3fda235dfd68341b3edf4121bc4428642c93acbd6de88c26bf95fc5d7"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
-"checksum lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
+"checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
 "checksum libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)" = "c6785aa7dd976f5fbf3b71cfd9cd49d7f783c1ff565a858d71031c6c313aa5c6"
 "checksum libgit2-sys 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)" = "48441cb35dc255da8ae72825689a95368bf510659ae1ad55dc4aa88cb1789bf1"
diff --git a/src/bootstrap/Cargo.toml b/src/bootstrap/Cargo.toml
index 3151b56d8e8..589ee9276a5 100644
--- a/src/bootstrap/Cargo.toml
+++ b/src/bootstrap/Cargo.toml
@@ -42,11 +42,10 @@ num_cpus = "1.0"
 getopts = "0.2.19"
 cc = "1.0.35"
 libc = "0.2"
-serde = "1.0.8"
-serde_derive = "1.0.8"
+serde = { version = "1.0.8", features = ["derive"] }
 serde_json = "1.0.2"
 toml = "0.4"
-lazy_static = "0.2"
+lazy_static = "1.3.0"
 time = "0.1"
 petgraph = "0.4.13"
 
diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs
index c84eb6476e0..51663e93169 100644
--- a/src/bootstrap/builder.rs
+++ b/src/bootstrap/builder.rs
@@ -11,6 +11,8 @@ use std::path::{Path, PathBuf};
 use std::process::Command;
 use std::time::{Duration, Instant};
 
+use build_helper::t;
+
 use crate::cache::{Cache, Interned, INTERNER};
 use crate::check;
 use crate::compile;
@@ -1308,6 +1310,8 @@ mod __test {
     use crate::config::Config;
     use std::thread;
 
+    use pretty_assertions::assert_eq;
+
     fn configure(host: &[&str], target: &[&str]) -> Config {
         let mut config = Config::default_opts();
         // don't save toolstates
diff --git a/src/bootstrap/cache.rs b/src/bootstrap/cache.rs
index 239959682cb..f137a7b8cc2 100644
--- a/src/bootstrap/cache.rs
+++ b/src/bootstrap/cache.rs
@@ -13,6 +13,8 @@ use std::path::{Path, PathBuf};
 use std::sync::Mutex;
 use std::cmp::{PartialOrd, Ord, Ordering};
 
+use lazy_static::lazy_static;
+
 use crate::builder::Step;
 
 pub struct Interned<T>(usize, PhantomData<*const T>);
diff --git a/src/bootstrap/clean.rs b/src/bootstrap/clean.rs
index b52e1a7b0e6..73be8bfed8e 100644
--- a/src/bootstrap/clean.rs
+++ b/src/bootstrap/clean.rs
@@ -9,6 +9,8 @@ use std::fs;
 use std::io::{self, ErrorKind};
 use std::path::Path;
 
+use build_helper::t;
+
 use crate::Build;
 
 pub fn clean(build: &Build, all: bool) {
diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
index 66443d472d3..9c4e856f0b8 100644
--- a/src/bootstrap/compile.rs
+++ b/src/bootstrap/compile.rs
@@ -15,8 +15,9 @@ use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio, exit};
 use std::str;
 
-use build_helper::{output, mtime, up_to_date};
+use build_helper::{output, mtime, t, up_to_date};
 use filetime::FileTime;
+use serde::Deserialize;
 use serde_json;
 
 use crate::dist;
diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
index 0c31c41ceda..b1d009a6740 100644
--- a/src/bootstrap/config.rs
+++ b/src/bootstrap/config.rs
@@ -10,8 +10,10 @@ use std::path::{Path, PathBuf};
 use std::process;
 use std::cmp;
 
+use build_helper::t;
 use num_cpus;
 use toml;
+use serde::Deserialize;
 use crate::cache::{INTERNER, Interned};
 use crate::flags::Flags;
 pub use crate::flags::Subcommand;
diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index 57c06061c34..b0616ff6691 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -14,7 +14,7 @@ use std::io::Write;
 use std::path::{PathBuf, Path};
 use std::process::{Command, Stdio};
 
-use build_helper::output;
+use build_helper::{output, t};
 
 use crate::{Compiler, Mode, LLVM_TOOLS};
 use crate::channel;
diff --git a/src/bootstrap/doc.rs b/src/bootstrap/doc.rs
index 330f66c1df0..9c3a17bff6b 100644
--- a/src/bootstrap/doc.rs
+++ b/src/bootstrap/doc.rs
@@ -13,7 +13,7 @@ use std::io;
 use std::path::{PathBuf, Path};
 
 use crate::Mode;
-use build_helper::up_to_date;
+use build_helper::{t, up_to_date};
 
 use crate::util::symlink_dir;
 use crate::builder::{Builder, Compiler, RunConfig, ShouldRun, Step};
diff --git a/src/bootstrap/install.rs b/src/bootstrap/install.rs
index 2d040d60e5f..deda30b6bbd 100644
--- a/src/bootstrap/install.rs
+++ b/src/bootstrap/install.rs
@@ -8,6 +8,8 @@ use std::fs;
 use std::path::{Path, PathBuf, Component};
 use std::process::Command;
 
+use build_helper::t;
+
 use crate::dist::{self, pkgname, sanitize_sh, tmpdir};
 
 use crate::builder::{Builder, RunConfig, ShouldRun, Step};
diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index f63aac0f0e2..ca4489655ca 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -108,17 +108,6 @@
 #![feature(core_intrinsics)]
 #![feature(drain_filter)]
 
-#[macro_use]
-extern crate build_helper;
-#[macro_use]
-extern crate serde_derive;
-#[macro_use]
-extern crate lazy_static;
-
-#[cfg(test)]
-#[macro_use]
-extern crate pretty_assertions;
-
 use std::cell::{RefCell, Cell};
 use std::collections::{HashSet, HashMap};
 use std::env;
@@ -134,7 +123,9 @@ use std::os::unix::fs::symlink as symlink_file;
 #[cfg(windows)]
 use std::os::windows::fs::symlink_file;
 
-use build_helper::{run_silent, run_suppressed, try_run_silent, try_run_suppressed, output, mtime};
+use build_helper::{
+    mtime, output, run_silent, run_suppressed, t, try_run_silent, try_run_suppressed,
+};
 use filetime::FileTime;
 
 use crate::util::{exe, libdir, OutputFolder, CiEnv};
diff --git a/src/bootstrap/metadata.rs b/src/bootstrap/metadata.rs
index 7fa377f310b..4a71fd2ce0b 100644
--- a/src/bootstrap/metadata.rs
+++ b/src/bootstrap/metadata.rs
@@ -4,6 +4,7 @@ use std::path::PathBuf;
 use std::collections::HashSet;
 
 use build_helper::output;
+use serde::Deserialize;
 use serde_json;
 
 use crate::{Build, Crate};
diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 285f9458c44..5777331b9bf 100644
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -14,7 +14,7 @@ use std::fs::{self, File};
 use std::path::{Path, PathBuf};
 use std::process::Command;
 
-use build_helper::output;
+use build_helper::{output, t};
 use cmake;
 use cc;
 
diff --git a/src/bootstrap/sanity.rs b/src/bootstrap/sanity.rs
index fa6857cdc11..dc65fb9b797 100644
--- a/src/bootstrap/sanity.rs
+++ b/src/bootstrap/sanity.rs
@@ -15,7 +15,7 @@ use std::fs;
 use std::path::PathBuf;
 use std::process::Command;
 
-use build_helper::output;
+use build_helper::{output, t};
 
 use crate::Build;
 
diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index 38027aded9c..a3d96836aad 100644
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -11,7 +11,7 @@ use std::iter;
 use std::path::{Path, PathBuf};
 use std::process::Command;
 
-use build_helper::{self, output};
+use build_helper::{self, output, t};
 
 use crate::builder::{Builder, Compiler, Kind, RunConfig, ShouldRun, Step};
 use crate::cache::{Interned, INTERNER};
diff --git a/src/bootstrap/tool.rs b/src/bootstrap/tool.rs
index c23ddbdbc68..edcd68d010e 100644
--- a/src/bootstrap/tool.rs
+++ b/src/bootstrap/tool.rs
@@ -4,6 +4,8 @@ use std::path::PathBuf;
 use std::process::{Command, exit};
 use std::collections::HashSet;
 
+use build_helper::t;
+
 use crate::Mode;
 use crate::Compiler;
 use crate::builder::{Step, RunConfig, ShouldRun, Builder};
diff --git a/src/bootstrap/toolstate.rs b/src/bootstrap/toolstate.rs
index 8ff7c09fc29..e86209be91f 100644
--- a/src/bootstrap/toolstate.rs
+++ b/src/bootstrap/toolstate.rs
@@ -1,3 +1,5 @@
+use serde::{Deserialize, Serialize};
+
 #[derive(Copy, Clone, Debug, Deserialize, Serialize, PartialEq, Eq)]
 #[serde(rename_all = "kebab-case")]
 /// Whether a tool can be compiled, tested or neither
diff --git a/src/bootstrap/util.rs b/src/bootstrap/util.rs
index bda1e56e1e7..a162c65672f 100644
--- a/src/bootstrap/util.rs
+++ b/src/bootstrap/util.rs
@@ -11,6 +11,8 @@ use std::path::{Path, PathBuf};
 use std::process::Command;
 use std::time::{SystemTime, Instant};
 
+use build_helper::t;
+
 use crate::config::Config;
 use crate::builder::Builder;
 
diff --git a/src/tools/build-manifest/Cargo.toml b/src/tools/build-manifest/Cargo.toml
index 93d0f61e1d9..63b6399bb90 100644
--- a/src/tools/build-manifest/Cargo.toml
+++ b/src/tools/build-manifest/Cargo.toml
@@ -7,4 +7,3 @@ edition = "2018"
 [dependencies]
 toml = "0.4"
 serde = { version = "1.0", features = ["derive"] }
-serde_derive = "1.0"
diff --git a/src/tools/compiletest/Cargo.toml b/src/tools/compiletest/Cargo.toml
index 00e1a53473c..336d7e32024 100644
--- a/src/tools/compiletest/Cargo.toml
+++ b/src/tools/compiletest/Cargo.toml
@@ -11,9 +11,8 @@ filetime = "0.2"
 getopts = "0.2"
 log = "0.4"
 regex = "1.0"
-serde = "1.0"
+serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-serde_derive = "1.0"
 rustfix = "0.4.1"
 lazy_static = "1.0"
 walkdir = "2"
diff --git a/src/tools/compiletest/src/errors.rs b/src/tools/compiletest/src/errors.rs
index 0329fb0db14..5b3936ffc1e 100644
--- a/src/tools/compiletest/src/errors.rs
+++ b/src/tools/compiletest/src/errors.rs
@@ -7,6 +7,8 @@ use std::io::BufReader;
 use std::path::Path;
 use std::str::FromStr;
 
+use log::*;
+
 #[derive(Clone, Debug, PartialEq)]
 pub enum ErrorKind {
     Help,
diff --git a/src/tools/compiletest/src/header.rs b/src/tools/compiletest/src/header.rs
index 54e9b76a21e..dbc477585cb 100644
--- a/src/tools/compiletest/src/header.rs
+++ b/src/tools/compiletest/src/header.rs
@@ -4,6 +4,8 @@ use std::io::prelude::*;
 use std::io::BufReader;
 use std::path::{Path, PathBuf};
 
+use log::*;
+
 use crate::common::{self, CompareMode, Config, Mode};
 use crate::util;
 
diff --git a/src/tools/compiletest/src/json.rs b/src/tools/compiletest/src/json.rs
index d651b9a92b6..02b09e21ff0 100644
--- a/src/tools/compiletest/src/json.rs
+++ b/src/tools/compiletest/src/json.rs
@@ -3,6 +3,7 @@
 
 use crate::errors::{Error, ErrorKind};
 use crate::runtest::ProcRes;
+use serde::Deserialize;
 use serde_json;
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
diff --git a/src/tools/compiletest/src/main.rs b/src/tools/compiletest/src/main.rs
index dc5d1b9a853..e253934e566 100644
--- a/src/tools/compiletest/src/main.rs
+++ b/src/tools/compiletest/src/main.rs
@@ -3,14 +3,6 @@
 #![feature(vec_remove_item)]
 #![deny(warnings, rust_2018_idioms)]
 
-#[cfg(unix)]
-extern crate libc;
-#[macro_use]
-extern crate log;
-#[macro_use]
-extern crate lazy_static;
-#[macro_use]
-extern crate serde_derive;
 extern crate test;
 
 use crate::common::CompareMode;
@@ -30,6 +22,7 @@ use crate::util::logv;
 use walkdir::WalkDir;
 use env_logger;
 use getopts;
+use log::*;
 
 use self::header::{EarlyProps, Ignore};
 
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index a11a4f17eb5..3689946c055 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -29,6 +29,9 @@ use std::path::{Path, PathBuf};
 use std::process::{Child, Command, ExitStatus, Output, Stdio};
 use std::str;
 
+use lazy_static::lazy_static;
+use log::*;
+
 use crate::extract_gdb_version;
 use crate::is_android_gdb_target;
 
diff --git a/src/tools/compiletest/src/util.rs b/src/tools/compiletest/src/util.rs
index 50dce4b55ae..adc1224bcd3 100644
--- a/src/tools/compiletest/src/util.rs
+++ b/src/tools/compiletest/src/util.rs
@@ -3,6 +3,8 @@ use std::env;
 use std::path::PathBuf;
 use crate::common::Config;
 
+use log::*;
+
 /// Conversion table from triple OS name to Rust SYSNAME
 const OS_TABLE: &'static [(&'static str, &'static str)] = &[
     ("android", "android"),
diff --git a/src/tools/tidy/Cargo.toml b/src/tools/tidy/Cargo.toml
index 433e9264dd1..eeac6cfbb30 100644
--- a/src/tools/tidy/Cargo.toml
+++ b/src/tools/tidy/Cargo.toml
@@ -6,6 +6,5 @@ edition = "2018"
 
 [dependencies]
 regex = "1"
-serde = "1.0.8"
-serde_derive = "1.0.8"
+serde = { version = "1.0.8", features = ["derive"] }
 serde_json = "1.0.2"
diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index e90737febd5..8626ba060bf 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -5,7 +5,7 @@ use std::fs;
 use std::path::Path;
 use std::process::Command;
 
-use serde_derive::Deserialize;
+use serde::Deserialize;
 use serde_json;
 
 const LICENSES: &[&str] = &[