diff --git a/Cargo.lock b/Cargo.lock
index 114023518d..bf8506a829 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -109,7 +109,7 @@ name = "atty"
 version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -130,7 +130,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace-sys 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -141,7 +141,7 @@ version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -388,7 +388,7 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bzip2-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -397,7 +397,7 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -493,7 +493,7 @@ version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -526,7 +526,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -582,7 +582,7 @@ dependencies = [
  "clicolors-control 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "encode_unicode 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "termios 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -600,7 +600,7 @@ version = "0.6.4"
 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 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -609,7 +609,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -628,7 +628,7 @@ version = "0.5.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -888,7 +888,7 @@ name = "dirs"
 version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -908,7 +908,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -920,7 +920,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dlopen_derive 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -929,7 +929,7 @@ name = "dlopen_derive"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.15.42 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1077,7 +1077,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "errno-dragonfly 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1087,7 +1087,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1145,7 +1145,7 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1162,7 +1162,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz_oxide 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1290,7 +1290,7 @@ name = "gag"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1331,7 +1331,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "c_linked_list 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "get_if_addrs-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1341,7 +1341,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "gcc 0.3.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1349,7 +1349,7 @@ name = "gethostname"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1359,7 +1359,7 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1440,7 +1440,7 @@ name = "hermit-abi"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1481,7 +1481,7 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1706,7 +1706,7 @@ name = "iovec"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1744,7 +1744,7 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "jemalloc-sys 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1755,7 +1755,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs_extra 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1764,7 +1764,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "jemalloc-sys 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1772,7 +1772,7 @@ name = "jobserver"
 version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1949,7 +1949,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.67"
+version = "0.2.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1969,7 +1969,7 @@ dependencies = [
  "bindgen 0.49.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2030,7 +2030,7 @@ name = "memchr"
 version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2038,7 +2038,7 @@ name = "memchr"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2046,7 +2046,7 @@ name = "memchr"
 version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2054,7 +2054,7 @@ name = "memmap"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2072,7 +2072,7 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "getrandom 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "mach_o_sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2120,7 +2120,7 @@ dependencies = [
  "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (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)",
@@ -2145,7 +2145,7 @@ version = "0.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2176,7 +2176,7 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2193,7 +2193,7 @@ version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2215,7 +2215,7 @@ dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2292,7 +2292,7 @@ version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hermit-abi 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2342,7 +2342,7 @@ dependencies = [
  "cfg-if 0.1.9 (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 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.54 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2358,7 +2358,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2466,7 +2466,7 @@ name = "parking_lot_core"
 version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2477,7 +2477,7 @@ name = "parking_lot_core"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (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)",
@@ -2491,7 +2491,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (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)",
@@ -2505,7 +2505,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2842,7 +2842,7 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2854,7 +2854,7 @@ version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2872,7 +2872,7 @@ version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "getrandom 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (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 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2963,7 +2963,7 @@ name = "rand_jitter"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2975,7 +2975,7 @@ 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 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (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 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3160,7 +3160,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "web-sys 0.3.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3172,7 +3172,7 @@ name = "rocksdb"
 version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "librocksdb-sys 6.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3181,7 +3181,7 @@ name = "rpassword"
 version = "4.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3298,7 +3298,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation 0.6.4 (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 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "security-framework-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3327,7 +3327,7 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3564,7 +3564,7 @@ version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -3734,7 +3734,7 @@ version = "1.1.0"
 dependencies = [
  "bincode 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-derive 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3996,7 +3996,7 @@ dependencies = [
  "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-syntax 0.6.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "reqwest 0.10.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4177,7 +4177,7 @@ dependencies = [
  "fs_extra 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4442,7 +4442,7 @@ version = "4.0.1-3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -4473,7 +4473,7 @@ dependencies = [
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs_extra 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4547,7 +4547,7 @@ dependencies = [
  "bs58 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cbindgen 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "ed25519-dalek 1.0.0-pre.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-sdk 1.1.0",
@@ -4601,7 +4601,7 @@ dependencies = [
 name = "solana-streamer"
 version = "1.1.0"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-logger 1.1.0",
@@ -4617,7 +4617,7 @@ name = "solana-sys-tuner"
 version = "1.1.0"
 dependencies = [
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-clap-utils 1.1.0",
@@ -5054,7 +5054,7 @@ dependencies = [
  "combine 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "elfkit 0.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hash32 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5217,7 +5217,7 @@ dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -5229,7 +5229,7 @@ dependencies = [
  "bytesize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 3.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5246,7 +5246,7 @@ version = "0.4.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "filetime 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "xattr 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -5266,7 +5266,7 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5296,7 +5296,7 @@ name = "termios"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5331,7 +5331,7 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5339,7 +5339,7 @@ name = "thread-id"
 version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -5397,7 +5397,7 @@ name = "time"
 version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -5640,7 +5640,7 @@ dependencies = [
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5794,7 +5794,7 @@ name = "unix_socket2"
 version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5832,7 +5832,7 @@ name = "users"
 version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -5870,7 +5870,7 @@ name = "wait-timeout"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6061,7 +6061,7 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6178,7 +6178,7 @@ name = "xattr"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -6412,7 +6412,7 @@ dependencies = [
 "checksum language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a91d884b6667cd606bb5a69aa0c99ba811a115fc68915e7056ec08a46e93199a"
 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 "checksum lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
-"checksum libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)" = "eb147597cdf94ed43ab7a9038716637d2d1bf2bc571da995d0028dec06bd3018"
+"checksum libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)" = "dea0c0405123bba743ee3f91f49b1c7cfb684eef0da0a50110f758ccf24cdff0"
 "checksum libloading 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f2b111a074963af1d37a139918ac6d49ad1d0d5e47f72fd55388619691a7d753"
 "checksum librocksdb-sys 6.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "0a0785e816e1e11e7599388a492c61ef80ddc2afc91e313e61662cce537809be"
 "checksum linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ae91b68aebc4ddb91978b11a1b02ddd8602a05ec19002801c5666000e05e0f83"
diff --git a/ledger/Cargo.toml b/ledger/Cargo.toml
index 46800a03a1..3c00ac6450 100644
--- a/ledger/Cargo.toml
+++ b/ledger/Cargo.toml
@@ -18,7 +18,7 @@ dir-diff = "0.3.2"
 sha2 = "0.8.1"
 fs_extra = "1.1.0"
 itertools = "0.9.0"
-libc = "0.2.67"
+libc = "0.2.68"
 log = { version = "0.4.8" }
 num_cpus = "1.0.0"
 rand = "0.6.5"
diff --git a/programs/bpf_loader/Cargo.toml b/programs/bpf_loader/Cargo.toml
index 4178ace358..d5f0649363 100644
--- a/programs/bpf_loader/Cargo.toml
+++ b/programs/bpf_loader/Cargo.toml
@@ -11,7 +11,7 @@ edition = "2018"
 [dependencies]
 bincode = "1.2.1"
 byteorder = "1.3.4"
-libc = "0.2.67"
+libc = "0.2.68"
 log = "0.4.8"
 num-derive = { version = "0.3" }
 num-traits = { version = "0.2" }
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index f62025c9ff..391f505819 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -15,7 +15,7 @@ byteorder = "1.3.4"
 fnv = "1.0.6"
 fs_extra = "1.1.0"
 itertools = "0.9.0"
-libc = "0.2.67"
+libc = "0.2.68"
 libloading = "0.5.2"
 log = "0.4.8"
 memmap = "0.7.0"
diff --git a/sdk-c/Cargo.toml b/sdk-c/Cargo.toml
index 48a34727de..f599b75483 100644
--- a/sdk-c/Cargo.toml
+++ b/sdk-c/Cargo.toml
@@ -15,7 +15,7 @@ crate-type = ["staticlib"]
 [dependencies]
 bincode = "1.2.1"
 bs58 = "0.3.0"
-libc = "0.2.67"
+libc = "0.2.68"
 rand_chacha = "0.1.1"
 rand_core = { version = ">=0.2, <0.4", default-features = false }
 solana-sdk = { path = "../sdk", version = "1.1.0" }
diff --git a/streamer/Cargo.toml b/streamer/Cargo.toml
index 3f80c6fc17..8c4a07fcd4 100644
--- a/streamer/Cargo.toml
+++ b/streamer/Cargo.toml
@@ -15,7 +15,7 @@ solana-sdk = { path = "../sdk", version = "1.1.0" }
 thiserror = "1.0"
 solana-measure = { path = "../measure", version = "1.1.0" }
 solana-logger = { path = "../logger", version = "1.1.0" }
-libc = "0.2.67"
+libc = "0.2.68"
 nix = "0.17.0"
 solana-perf = { path = "../perf", version = "1.1.0" }
 
diff --git a/sys-tuner/Cargo.toml b/sys-tuner/Cargo.toml
index 2179342bd7..f5fc510744 100644
--- a/sys-tuner/Cargo.toml
+++ b/sys-tuner/Cargo.toml
@@ -12,7 +12,7 @@ publish = true
 [dependencies]
 clap = "2.33.0"
 log = "0.4.8"
-libc = "0.2.67"
+libc = "0.2.68"
 solana-clap-utils = { path = "../clap-utils", version = "1.1.0" }
 solana-logger = { path = "../logger", version = "1.1.0" }