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readme: explain that Rust >= 1.60 is needed

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We have `rust-version = "1.60"` in `Cargo.toml`, but Cargo doesn't
check that until after dependency resolution, which fails if you have
an older version (I don't know why).
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Martin von Zweigbergk 2022-08-29 14:09:08 -07:00 committed by Martin von Zweigbergk
parent c83e563879
commit cc77a232a1
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@ -145,6 +145,13 @@ See below for how to build from source. There are also
[pre-built binaries](https://github.com/martinvonz/jj/releases) for Windows,
Mac, or Linux (musl).
If you're installing from source, you need to use Rust version 1.60 or higher,
or you will get a cryptic message like this:
```
error: failed to select a version for the requirement `libgit2-sys = "=0.14.0"``
candidate versions found which didn't match: 0.13.2+1.4.2, 0.13.1+1.4.2, 0.13.0+1.4.1, ...
```
### Linux
On most distributions, you'll need to build from source using `cargo` directly.