rewind and checkpoint commands not available

[uri]

Please answer the following before submitting your issue:

Note: Please include any substantial examples (debug session output, stacktraces, etc) as linked gists.

1. What version of Delve are you using (dlv version)?

Delve Debugger
Version: 1.4.0
Build: $Id: 67422e6f7148fa1efa0eac1423ab5594b223d93b $

2. What version of Go are you using? (go version)?

go version go1.13.4 darwin/amd64

3. What operating system and processor architecture are you using? macOS 10.15.4

4. What did you do?

dlv debug .
help

Shows the help but rewind and checkpoint are not listed

dlv debug .
rewind

Expected to see some kind of error of possibly using rewind wrong but saw: Command failed: command not available

I thought maybe rewind only becomes available after some breakpoints have been traverse so I tried setting multiple breakpoints, continuing through some of them and then trying the rewind command but this had the same error message.

[derekparker]

Unfortunately this command is only available on linux/amd64.