`cargo update -p userfaultfd` to 0.4.2 (#3505)

which has bugfixes to work correctly on linux 5.11 and above, which is
required for github's ubuntu-latest builder as of this morning

Cargo.lock

@@ -178,9 +178,9 @@ dependencies = [
 
 [[package]]
 name = "bindgen"
-version = "0.57.0"
+version = "0.59.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd4865004a46a0aafb2a0a5eb19d3c9fc46ee5f063a6cfc605c69ac9ecf5263d"
+checksum = "453c49e5950bb0eb63bb3df640e31618846c89d5b7faa54040d76e98e0134375"
 dependencies = [
  "bitflags",
  "cexpr",
@@ -216,6 +216,18 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bitvec"
+version = "0.19.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8942c8d352ae1838c9dda0b0ca2ab657696ef2232a20147cf1b30ae1a9cb4321"
+dependencies = [
+ "funty",
+ "radium",
+ "tap",
+ "wyz",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.9.0"
@@ -376,9 +388,9 @@ dependencies = [
 
 [[package]]
 name = "cexpr"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4aedb84272dbe89af497cf81375129abda4fc0a9e7c5d317498c15cc30c0d27"
+checksum = "db507a7679252d2276ed0dd8113c6875ec56d3089f9225b2b42c30cc1f8e5c89"
 dependencies = [
  "nom",
 ]
@@ -1196,6 +1208,12 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e398fae362f4124bbe630d99519fb2d68a03e2e3a23b441028cdcdc4f4895687"
 
+[[package]]
+name = "funty"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
+
 [[package]]
 name = "gcc"
 version = "0.3.55"
@@ -1633,10 +1651,12 @@ dependencies = [
 
 [[package]]
 name = "nom"
-version = "5.1.2"
+version = "6.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ffb4262d26ed83a1c0a33a38fe2bb15797329c85770da05e6b828ddb782627af"
+checksum = "e7413f999671bd4745a7b624bd370a569fb6bc574b23c83a3c5ed2e453f3d5e2"
 dependencies = [
+ "bitvec",
+ "funty",
  "memchr",
  "version_check",
 ]
@@ -2221,6 +2241,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "radium"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
+
 [[package]]
 name = "rand"
 version = "0.7.3"
@@ -2606,9 +2632,9 @@ dependencies = [
 
 [[package]]
 name = "shlex"
-version = "0.1.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
+checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"
 
 [[package]]
 name = "shuffling-allocator"
@@ -2750,6 +2776,12 @@ dependencies = [
  "winx",
 ]
 
+[[package]]
+name = "tap"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
+
 [[package]]
 name = "target-lexicon"
 version = "0.12.0"
@@ -2998,9 +3030,9 @@ dependencies = [
 
 [[package]]
 name = "userfaultfd"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0c5a19bdab0e8c45b0116ac7901e5a697e6b1bd40843e1a716b7da2ea6f9c91"
+checksum = "3b738009e099b4ded1ecf19dfb7631f69c24f16e0af6d29fd9b3f54a092aca46"
 dependencies = [
  "bitflags",
  "cfg-if 1.0.0",
@@ -3012,9 +3044,9 @@ dependencies = [
 
 [[package]]
 name = "userfaultfd-sys"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ada4f4ae167325015f52cc65f9fb6c251b868d8fb3b6dd0ce2d60e497c4870a"
+checksum = "1f03138f85fb1a85b1324bd34f29491c6592fff9bcc8fb7d4176d2166185d2de"
 dependencies = [
  "bindgen",
  "cc",
@@ -3775,6 +3807,12 @@ dependencies = [
  "wast 35.0.2",
 ]
 
+[[package]]
+name = "wyz"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
+
 [[package]]
 name = "xoodyak"
 version = "0.7.2"