diff --git a/Cargo.lock b/Cargo.lock
index 384bf3c6f3d1e..0342e33cd1dba 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -92,7 +92,7 @@ name = "atty"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -105,7 +105,7 @@ dependencies = [
  "backtrace-sys 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiler_builtins 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-std-workspace-core 1.0.0",
 ]
@@ -117,7 +117,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiler_builtins 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-std-workspace-core 1.0.0",
 ]
 
@@ -162,7 +162,7 @@ dependencies = [
  "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 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (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)",
@@ -230,6 +230,15 @@ name = "bytesize"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "c2-chacha"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "cargo"
 version = "0.39.0"
@@ -257,10 +266,10 @@ dependencies = [
  "home 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ignore 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "im-rc 13.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.16 (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)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "libgit2-sys 0.8.2 (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)",
@@ -444,7 +453,7 @@ name = "commoncrypto-sys"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -464,7 +473,7 @@ dependencies = [
  "env_logger 0.5.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (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 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -483,7 +492,7 @@ dependencies = [
  "diff 0.1.11 (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)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (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 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -514,7 +523,7 @@ version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -649,7 +658,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "curl-sys 0.4.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "schannel 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -663,7 +672,7 @@ version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "libnghttp2-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.43 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -771,7 +780,7 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -782,7 +791,7 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "compiler_builtins 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-std-workspace-core 1.0.0",
 ]
 
@@ -895,7 +904,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -910,7 +919,7 @@ version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crc32fast 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz-sys 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz_oxide_c_api 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -955,7 +964,7 @@ name = "fs2"
 version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1039,13 +1048,22 @@ dependencies = [
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "git2"
 version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "libgit2-sys 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1330,7 +1348,7 @@ name = "iovec"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1367,17 +1385,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs_extra 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "jobserver"
-version = "0.1.13"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1423,7 +1441,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.54"
+version = "0.2.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rustc-std-workspace-core 1.0.0",
@@ -1447,7 +1465,7 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "libssh2-sys 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.43 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1460,7 +1478,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1469,7 +1487,7 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1482,7 +1500,7 @@ version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1547,7 +1565,7 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1657,7 +1675,7 @@ name = "memmap"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1707,7 +1725,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1725,7 +1743,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz_oxide 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1739,7 +1757,7 @@ dependencies = [
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (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)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1764,7 +1782,7 @@ version = "0.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1814,7 +1832,7 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "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)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1831,7 +1849,7 @@ version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1874,7 +1892,7 @@ name = "num_cpus"
 version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1899,7 +1917,7 @@ dependencies = [
  "cfg-if 0.1.8 (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 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1922,7 +1940,7 @@ version = "0.9.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-src 111.3.0+1.1.1c (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1961,7 +1979,7 @@ version = "0.0.0"
 dependencies = [
  "compiler_builtins 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "core 0.0.0",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1972,7 +1990,7 @@ dependencies = [
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiler_builtins 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "core 0.0.0",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "unwind 0.0.0",
 ]
 
@@ -1990,7 +2008,7 @@ name = "parking_lot_core"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2105,6 +2123,11 @@ dependencies = [
  "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "precomputed-hash"
 version = "0.1.1"
@@ -2207,7 +2230,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2218,6 +2241,18 @@ dependencies = [
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "getrandom 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.1.0"
@@ -2227,6 +2262,15 @@ dependencies = [
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_chacha"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "c2-chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.3.0"
@@ -2237,6 +2281,14 @@ name = "rand_core"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "rand_core"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "getrandom 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.1.0"
@@ -2245,6 +2297,14 @@ dependencies = [
  "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_hc"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_isaac"
 version = "0.1.1"
@@ -2260,7 +2320,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2522,7 +2582,7 @@ dependencies = [
  "chalk-engine 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fmt_macros 0.0.0",
  "graphviz 0.0.0",
- "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.16 (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 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2567,7 +2627,7 @@ dependencies = [
  "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "ena 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.16 (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)",
@@ -2710,7 +2770,7 @@ 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 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2799,8 +2859,8 @@ version = "0.0.0"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2844,7 +2904,7 @@ dependencies = [
  "ena 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "graphviz 0.0.0",
  "indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.16 (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)",
@@ -3307,7 +3367,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation-sys 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "security-framework-sys 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3415,7 +3475,7 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "arc-swap 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3447,7 +3507,7 @@ version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3470,7 +3530,7 @@ dependencies = [
  "dlmalloc 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fortanix-sgx-abi 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hashbrown 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "panic_abort 0.0.0",
  "panic_unwind 0.0.0",
  "profiler_builtins 0.0.0",
@@ -3647,7 +3707,7 @@ version = "0.4.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "filetime 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "xattr 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3658,7 +3718,7 @@ version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3711,7 +3771,7 @@ name = "termion"
 version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3731,7 +3791,7 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "getopts 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3767,7 +3827,7 @@ name = "time"
 version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3858,7 +3918,7 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-named-pipes 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3890,7 +3950,7 @@ version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "signal-hook 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3961,7 +4021,7 @@ dependencies = [
  "bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (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)",
  "mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4095,7 +4155,7 @@ dependencies = [
  "cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiler_builtins 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "core 0.0.0",
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -4264,7 +4324,7 @@ name = "xattr"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -4304,6 +4364,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "94f88df23a25417badc922ab0f5716cc1330e87f71ddd9203b3a3ccd9cedf75d"
 "checksum bytes 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)" = "40ade3d27603c2cb345eb0912aec461a6dec7e06a4ae48589904e808335c7afa"
 "checksum bytesize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "716960a18f978640f25101b5cbf1c6f6b0d3192fab36a2d98ca96f0ecbe41010"
+"checksum c2-chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7d64d04786e0f528460fc884753cf8dddcc466be308f6026f8e355c41a0e4101"
 "checksum cargo_metadata 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "929766d993a2fde7a0ae962ee82429069cd7b68839cd9375b98efd719df65d3a"
 "checksum cc 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)" = "5e5f3fee5eeb60324c2781f1e41286bdee933850fff9b3c672587fed5ec58c83"
 "checksum cfg-if 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "89431bba4e6b7092fb5fcd00a6f6ca596c55cc26b2f1e6dcdd08a1f4933f66b2"
@@ -4377,6 +4438,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum fwdansi 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "34dd4c507af68d37ffef962063dfa1944ce0dd4d5b82043dbab1dabe088610c3"
 "checksum generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ef25c5683767570c2bbd7deba372926a55eaae9982d7726ee2a1050239d45b9d"
 "checksum getopts 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)" = "72327b15c228bfe31f1390f93dd5e9279587f0463836393c9df719ce62a3e450"
+"checksum getrandom 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "cd8e190892c840661957ba9f32dacfb3eb405e657f9f9f60485605f0bb37d6f8"
 "checksum git2 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8cb400360e8a4d61b10e648285bbfa919bbf9519d0d5d5720354456f44349226"
 "checksum git2-curl 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2293de73491c3dc4174c5949ef53d2cc037b27613f88d72032e3f5237247a7dd"
 "checksum glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
@@ -4408,14 +4470,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5b8467d9c1cebe26feb08c640139247fac215782d35371ade9a2136ed6085358"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 "checksum jemalloc-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7bef0d4ce37578dfd80b466e3d8324bd9de788e249f1accebb0c472ea4b52bdc"
-"checksum jobserver 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "b3d51e24009d966c8285d524dbaf6d60926636b2a89caee9ce0bd612494ddc16"
+"checksum jobserver 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "f74e73053eaf95399bf926e48fc7a2a3ce50bd0eaaa2357d391e95b2dcdd4f10"
 "checksum json 0.11.13 (registry+https://github.com/rust-lang/crates.io-index)" = "9ad0485404155f45cce53a40d4b2d6ac356418300daed05273d9e26f91c390be"
 "checksum jsonrpc-core 12.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "288dca7f9713710a29e485076b9340156cb701edb46a881f5d0c31aa4f5b9143"
 "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 1.3.0 (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 libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)" = "d44e80633f007889c7eff624b709ab43c92d708caad982295768a7b13ca3b5eb"
 "checksum libflate 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)" = "90c6f86f4b0caa347206f916f8b687b51d77c6ef8ff18d52dd007491fd580529"
 "checksum libgit2-sys 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4c179ed6d19cd3a051e68c177fbbc214e79ac4724fac3a850ec9f3d3eb8a5578"
 "checksum libnghttp2-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d75d7966bda4730b722d1eab8e668df445368a24394bae9fc1e8dc0ab3dbe4f4"
@@ -4483,6 +4545,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum phf_shared 0.7.24 (registry+https://github.com/rust-lang/crates.io-index)" = "234f71a15de2288bcb7e3b6515828d22af7ec8598ee6d24c3b526fa0a80b67a0"
 "checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
 "checksum polonius-engine 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f6b8a5defa2aef9ba4999aaa745fbc01c622ecea35964a306adc3e44be4f3b5b"
+"checksum ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e3cbf9f658cdb5000fcf6f362b8ea2ba154b9f146a61c7a20d647034c6b6561b"
 "checksum precomputed-hash 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 "checksum pretty_assertions 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3a029430f0d744bc3d15dd474d591bed2402b645d024583082b9f63bb936dac6"
 "checksum pretty_env_logger 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "df8b3f4e0475def7d9c2e5de8e5a1306949849761e107b360d03e98eafaffd61"
@@ -4494,10 +4557,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
 "checksum racer 2.1.24 (registry+https://github.com/rust-lang/crates.io-index)" = "19cfa87290af63a309db9a0363edb89fb8ed9a1ead92285985662b9f54927fa3"
 "checksum rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ae9d223d52ae411a33cf7e54ec6034ec165df296ccd23533d671a28252b6f66a"
+"checksum rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d47eab0e83d9693d40f825f86948aa16eff6750ead4bdffc4ab95b8b3a7f052c"
 "checksum rand_chacha 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "771b009e3a508cb67e8823dda454aaa5368c7bc1c16829fb77d3e980440dd34a"
+"checksum rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "03a2a90da8c7523f554344f921aa97283eadf6ac484a6d2a7d0212fa7f8d6853"
 "checksum rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0905b6b7079ec73b314d4c748701f6931eb79fd97c668caa3f1899b22b32c6db"
 "checksum rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d0e7a549d590831370895ab7ba4ea0c1b6b011d106b5ff2da6eee112615e6dc0"
+"checksum rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "615e683324e75af5d43d8f7a39ffe3ee4a9dc42c5c701167a71dc59c3a493aca"
 "checksum rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7b40677c7be09ae76218dc623efbf7b18e34bced3f38883af07bb75630a21bc4"
+"checksum rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
 "checksum rand_isaac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ded997c9d5f13925be2a6fd7e66bf1872597f759fd9dd93513dd7e92e5a5ee08"
 "checksum rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "7b75f676a1e053fc562eafbb47838d67c84801e38fc1ba459e8f180deabd5071"
 "checksum rand_pcg 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "086bd09a33c7044e56bb44d5bdde5a60e7f119a9e95b0775f545de759a32fe05"
diff --git a/src/ci/docker/dist-various-1/Dockerfile b/src/ci/docker/dist-various-1/Dockerfile
index 2a81de75a69b9..ce11cd846f5ed 100644
--- a/src/ci/docker/dist-various-1/Dockerfile
+++ b/src/ci/docker/dist-various-1/Dockerfile
@@ -104,7 +104,9 @@ ENV TARGETS=$TARGETS,armv5te-unknown-linux-musleabi
 ENV TARGETS=$TARGETS,armv7-unknown-linux-musleabihf
 ENV TARGETS=$TARGETS,aarch64-unknown-linux-musl
 ENV TARGETS=$TARGETS,sparc64-unknown-linux-gnu
-ENV TARGETS=$TARGETS,x86_64-unknown-redox
+# FIXME: temporarily disable the redox builder,
+# see: https://github.com/rust-lang/rust/issues/63160
+# ENV TARGETS=$TARGETS,x86_64-unknown-redox
 ENV TARGETS=$TARGETS,thumbv6m-none-eabi
 ENV TARGETS=$TARGETS,thumbv7m-none-eabi
 ENV TARGETS=$TARGETS,thumbv7em-none-eabi
diff --git a/src/librustc_codegen_llvm/llvm/ffi.rs b/src/librustc_codegen_llvm/llvm/ffi.rs
index d82e1c68df094..9f9410560e373 100644
--- a/src/librustc_codegen_llvm/llvm/ffi.rs
+++ b/src/librustc_codegen_llvm/llvm/ffi.rs
@@ -569,7 +569,7 @@ pub mod debuginfo {
     bitflags! {
         #[repr(transparent)]
         #[derive(Default)]
-        pub struct DIFlags: ::libc::uint32_t {
+        pub struct DIFlags: u32 {
             const FlagZero                = 0;
             const FlagPrivate             = 1;
             const FlagProtected           = 2;
@@ -598,7 +598,7 @@ pub mod debuginfo {
     bitflags! {
         #[repr(transparent)]
         #[derive(Default)]
-        pub struct DISPFlags: ::libc::uint32_t {
+        pub struct DISPFlags: u32 {
             const SPFlagZero              = 0;
             const SPFlagVirtual           = 1;
             const SPFlagPureVirtual       = 2;
diff --git a/src/libstd/sys/unix/time.rs b/src/libstd/sys/unix/time.rs
index e21c32cd91b1e..02f377d55c919 100644
--- a/src/libstd/sys/unix/time.rs
+++ b/src/libstd/sys/unix/time.rs
@@ -137,9 +137,21 @@ mod inner {
         t: Timespec::zero(),
     };
 
+    #[repr(C)]
+    #[derive(Copy, Clone)]
+    struct mach_timebase_info {
+        numer: u32,
+        denom: u32,
+    }
+    type mach_timebase_info_t = *mut mach_timebase_info;
+    type kern_return_t = libc::c_int;
+
     impl Instant {
         pub fn now() -> Instant {
-            Instant { t: unsafe { libc::mach_absolute_time() } }
+            extern "C" {
+                fn mach_absolute_time() -> u64;
+            }
+            Instant { t: unsafe { mach_absolute_time() } }
         }
 
         pub const fn zero() -> Instant {
@@ -230,8 +242,8 @@ mod inner {
         Some(mul_div_u64(nanos, info.denom as u64, info.numer as u64))
     }
 
-    fn info() -> libc::mach_timebase_info {
-        static mut INFO: libc::mach_timebase_info = libc::mach_timebase_info {
+    fn info() -> mach_timebase_info {
+        static mut INFO: mach_timebase_info = mach_timebase_info {
             numer: 0,
             denom: 0,
         };
@@ -245,7 +257,12 @@ mod inner {
 
             // ... otherwise learn for ourselves ...
             let mut info = mem::zeroed();
-            libc::mach_timebase_info(&mut info);
+            extern "C" {
+                fn mach_timebase_info(info: mach_timebase_info_t)
+                                      -> kern_return_t;
+            }
+
+            mach_timebase_info(&mut info);
 
             // ... and attempt to be the one thread that stores it globally for
             // all other threads
diff --git a/src/test/ui/issues/issue-3656.rs b/src/test/ui/issues/issue-3656.rs
index d55a22a72b6ff..17ff6b9f9f40c 100644
--- a/src/test/ui/issues/issue-3656.rs
+++ b/src/test/ui/issues/issue-3656.rs
@@ -12,13 +12,13 @@
 #![feature(rustc_private)]
 
 extern crate libc;
-use libc::{c_uint, uint32_t, c_void};
+use libc::{c_uint, c_void};
 
 pub struct KEYGEN {
     hash_algorithm: [c_uint; 2],
-    count: uint32_t,
+    count: u32,
     salt: *const c_void,
-    salt_size: uint32_t,
+    salt_size: u32,
 }
 
 extern {
diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index ca6cea9706680..de54eb8f57312 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -48,11 +48,12 @@ const EXCEPTIONS: &[&str] = &[
     "bytesize",           // Apache-2.0, cargo
     "im-rc",              // MPL-2.0+, cargo
     "adler32",            // BSD-3-Clause AND Zlib, cargo dep that isn't used
-    "fortanix-sgx-abi",   // MPL-2.0+, libstd but only for `sgx` target
     "constant_time_eq",   // CC0-1.0, rustfmt
     "utf8parse",          // Apache-2.0 OR MIT, cargo via strip-ansi-escapes
     "vte",                // Apache-2.0 OR MIT, cargo via strip-ansi-escapes
     "sized-chunks",       // MPL-2.0+, cargo via im-rc
+    // FIXME: this dependency violates the documentation comment above:
+    "fortanix-sgx-abi",   // MPL-2.0+, libstd but only for `sgx` target
 ];
 
 /// Which crates to check against the whitelist?
@@ -75,6 +76,7 @@ const WHITELIST: &[Crate<'_>] = &[
     Crate("bitflags"),
     Crate("build_const"),
     Crate("byteorder"),
+    Crate("c2-chacha"),
     Crate("cc"),
     Crate("cfg-if"),
     Crate("chalk-engine"),
@@ -96,6 +98,7 @@ const WHITELIST: &[Crate<'_>] = &[
     Crate("fuchsia-zircon"),
     Crate("fuchsia-zircon-sys"),
     Crate("getopts"),
+    Crate("getrandom"),
     Crate("humantime"),
     Crate("indexmap"),
     Crate("itertools"),
@@ -121,6 +124,7 @@ const WHITELIST: &[Crate<'_>] = &[
     Crate("parking_lot_core"),
     Crate("pkg-config"),
     Crate("polonius-engine"),
+    Crate("ppv-lite86"),
     Crate("proc-macro2"),
     Crate("quick-error"),
     Crate("quote"),