Hi, I tried to install semver-explain according to the instructions in the readme. But it complains, that I should use a cargo nightly version. Since I'm not a rust developer I'm refraining from doing so. Are these edition2021 feature really necessary?

# cargo install semver-explain
    Updating crates.io index
  Downloaded semver-explain v0.2.1
error: failed to parse manifest at `/Users/jkohl/.cargo/registry/src/github.com-1ecc6299db9ec823/semver-explain-0.2.1/Cargo.toml`

Caused by:
  feature `edition2021` is required

  this Cargo does not support nightly features, but if you
  switch to nightly channel you can add
  `cargo-features = ["edition2021"]` to enable this feature

# cargo --version
cargo 1.52.0 (69767412a 2021-04-21)

# uname -a
Darwin Bargain.local 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:24 PDT 2021; root:xnu-8019.41.5~1/RELEASE_ARM64_T8101 arm64

From the Cargo book, any caret requirement starting with 1. should be compatible up to <2.0.0:

^1.2.3  :=  >=1.2.3, <2.0.0
^1.2    :=  >=1.2.0, <2.0.0
^1      :=  >=1.0.0, <2.0.0

But this is what I found:

$ semver-explain "^1.2.3"
>=1.2.3, <2.0.0
$ semver-explain "^1.2"
>=1.2.0, <1.3.0
$ semver-explain "^1"
>=1.0.0, <2.0.0

Only major.minor strings appear to have this problem.

$ semver-explain --version
semver-explain 0.2.1

Based on our discussion here [1] I'm following up with a proposed Github Actions workflow to create binaries when a release is created. I did some basic tests locally, but I'm sure I've got something wrong somewhere :)

Note that you will need to add a token to the secrets in this repository named GITHUB_TOKEN.

1 - https://lobste.rs/s/yn9n7q/semver_explain_convert_semver