Update memoffset to fix soundness issues

Cargo.lock

@@ -74,7 +74,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "memoffset"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -162,7 +162,7 @@ dependencies = [
  "goblin 0.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "memoffset 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memoffset 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "posix-regex 0.1.0",
  "ralloc 1.0.0",
  "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -262,7 +262,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a374c89b9db55895453a74c1e38861d9deec0b01b405a82516e9d5de4820dea1"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2efc7bc57c883d4a4d6e3246905283d8dae951bb3bd32f49d6ef297f546e1c39"
-"checksum memoffset 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7efacc914ca612fc1022f27b7dc51585e1a9f94c08fd5d322cfd741399260ce0"
+"checksum memoffset 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ec59f182d065c1061425f4c072a5a5c3cf3d834fa591c8ad2fcefa8d580a2537"
 "checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
 "checksum plain 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 "checksum proc-macro2 0.4.28 (registry+https://github.com/rust-lang/crates.io-index)" = "ba92c84f814b3f9a44c5cfca7d2ad77fa10710867d2bbb1b3d175ab5f47daa12"

Cargo.toml

@@ -18,7 +18,7 @@ cc = "1.0.25"
 cbitset = "0.1.0"
 core_io = { path = "core_io", features = ["collections"] }
 lazy_static = { version = "1.2.0", features = ["nightly", "spin_no_std"] }
-memoffset = "0.3.0"
+memoffset = "0.4.0"
 posix-regex = { path = "posix-regex", features = ["no_std"] }
 rand = { version = "0.5.5", default-features = false }
 memchr = { version = "2.2.0", default-features = false }