use patched version of smol to avoid nix dependency

Cargo.lock

@@ -913,7 +913,7 @@ dependencies = [
  "lazy_static",
  "rand 0.7.3",
  "time",
- "version_check 0.9.1",
+ "version_check 0.9.2",
 ]
 
 [[package]]
@@ -1029,7 +1029,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d371106cc88ffdfb1eabd7111e432da544f16f3e2d7bf1dfe8bf575f1df045cd"
 dependencies = [
  "backtrace",
- "version_check 0.9.1",
+ "version_check 0.9.2",
 ]
 
 [[package]]
@@ -1537,9 +1537,9 @@ checksum = "67c21572b4949434e4fc1e1978b99c5f77064153c59d998bf13ecd96fb5ecba7"
 
 [[package]]
 name = "kv-log-macro"
-version = "1.0.5"
+version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a2d3beed37e5483887d81eb39de6de03a8346531410e1306ca48a9a89bd3a51"
+checksum = "4ff57d6d215f7ca7eb35a9a64d656ba4d9d2bef114d741dc08048e75e2f5d418"
 dependencies = [
  "log",
 ]
@@ -1794,7 +1794,7 @@ checksum = "0b471253da97532da4b61552249c521e01e736071f71c1a4f7ebbfbf0a06aad6"
 dependencies = [
  "lexical-core",
  "memchr",
- "version_check 0.9.1",
+ "version_check 0.9.2",
 ]
 
 [[package]]
@@ -1936,9 +1936,9 @@ dependencies = [
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.56"
+version = "0.9.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f02309a7f127000ed50594f0b50ecc69e7c654e16d41b4e8156d1b3df8e0b52e"
+checksum = "7410fef80af8ac071d4f63755c0ab89ac3df0fd1ea91f1d1f37cf5cec4395990"
 dependencies = [
  "autocfg 1.0.0",
  "cc",
@@ -2158,9 +2158,9 @@ checksum = "8e946095f9d3ed29ec38de908c22f95d9ac008e424c7bcae54c75a79c527c694"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.15"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70a50b9351bfa8d65a7d93ce712dc63d2fd15ddbf2c36990fc7cac344859c04f"
+checksum = "1502d12e458c49a4c9cbff560d0fe0060c252bc29799ed94ca2ed4bb665a0101"
 dependencies = [
  "unicode-xid 0.2.0",
 ]
@@ -2750,9 +2750,9 @@ dependencies = [
 
 [[package]]
 name = "sha2"
-version = "0.8.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27044adfd2e1f077f649f59deb9490d3941d674002f7d062870a60ebe9bd47a0"
+checksum = "a256f46ea78a0c0d9ff00077504903ac881a1dafdc20da66545699e7776b3e69"
 dependencies = [
  "block-buffer",
  "digest",
@@ -2804,8 +2804,7 @@ checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
 [[package]]
 name = "smol"
 version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "686c634ad1873fffef6aed20f180eede424fbf3bb31802394c90fd7335a661b7"
+source = "git+https://github.com/dignifiedquire/smol?branch=isolate-nix#09727d70f2349a3991162abd90e751838e1617b5"
 dependencies = [
  "async-task",
  "crossbeam",
@@ -3086,7 +3085,7 @@ version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
 dependencies = [
- "version_check 0.9.1",
+ "version_check 0.9.2",
 ]
 
 [[package]]
@@ -3171,9 +3170,9 @@ checksum = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 
 [[package]]
 name = "version_check"
-version = "0.9.1"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
+checksum = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"
 
 [[package]]
 name = "void"
@@ -3285,9 +3284,9 @@ dependencies = [
 
 [[package]]
 name = "wepoll-binding"
-version = "2.0.1"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7511014d92edaa2cba607fd6dc62974915bebc3e16f91f911a4bb240b4a3a68c"
+checksum = "374fff4ff9701ff8b6ad0d14bacd3156c44063632d8c136186ff5967d48999a7"
 dependencies = [
  "bitflags",
  "wepoll-sys",

Cargo.toml

@@ -96,3 +96,5 @@ repl = ["internals", "rustyline", "log", "pretty_env_logger", "ansi_term"]
 vendored = ["async-native-tls/vendored", "async-smtp/native-tls-vendored"]
 nightly = ["pgp/nightly"]
 
+[patch.crates-io]
+smol = { git = "https://github.com/dignifiedquire/smol", branch = "isolate-nix" }