**Caret requirements** allow SemVer compatible updates to a specified version.
An update is allowed if the new version number does not modify the left-most
non-zero digit in the major, minor, patch grouping. In this case, if we ran
-`cargo update -p time`, cargo would update us to version `0.1.13` if it was
-available, but would not update us to `0.2.0`. If instead we had specified the
-version string as `^1.0`, cargo would update to `1.1` but not `2.0`. The version
-`0.0.x` is not considered compatible with any other version.
+`cargo update -p time`, cargo should update us to version `0.1.13` if it is the
+latest `0.1.z` release, but would not update us to `0.2.0`. If instead we had
+specified the version string as `^1.0`, cargo should update to `1.1` if it is
+the latest `1.y` release, but not `2.0`. The version `0.0.x` is not considered
+compatible with any other version.
Here are some more examples of caret requirements and the versions that would
be allowed with them: