message: Update index map
  Avoids rebuilding every time (https://github.com/bluss/indexmap/issues/123)
diff: @@ -1130,6 +1130,12 @@ version = "1.6.0"
  source = "registry+https://github.com/rust-lang/crates.io-index"
  checksum = "d36fab90f82edc3c747f9d438e06cf0a491055896f2a279638bb5beed6c40177"
  +[[package]]
  +name = "hashbrown"
  +version = "0.9.0"
  +source = "registry+https://github.com/rust-lang/crates.io-index"
  +checksum = "00d63df3d41950fb462ed38308eea019113ad1508da725bbedcd0fa5a85ef5f7"
  +
  [[package]]
  name = "heck"
  version = "0.3.1"
  @@ -1330,11 +1336,12 @@ dependencies = [
  [[package]]
  name = "indexmap"
  -version = "1.3.2"
  +version = "1.6.0"
  source = "registry+https://github.com/rust-lang/crates.io-index"
  -checksum = "076f042c5b7b98f31d205f1249267e12a6518c1481e9dae9764af19b707d2292"
  +checksum = "55e2e4c765aa53a0424761bf9f41aa7a6ac1efa87238f59560640e27fca028f2"
  dependencies = [
  "autocfg 1.0.0",
  + "hashbrown",
  ]
  [[package]]
  