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Auto merge of #206 - ajaxm:ajaxm/rustup-update, r=komaeda

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Suggest rustup update in readme

I'm pretty new to Rust. I tried installing rustlings for the first time and got this error:
```
$> cargo install --force --path .
error: `/Users/ajax/projects/rust/rustlings` is not a crate root; specify a crate to install from crates.io, or use --path or --git to specify an alternate source

Caused by:
  failed to parse manifest at `/Users/ajax/projects/rust/rustlings/Cargo.toml`

Caused by:
  editions are unstable

Caused by:
  feature `edition` is required

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

I'm not sure if the answer was to run `rustup update` but I noticed that I was running Rust 1.29.0, so updated to 1.36.0 and got it working. If there's a way to specify a minimum required version, pls let me know.

Lastly, the whitespace changes were automatic from my editor. What's the convention here for making such updates? Thanks!
This commit is contained in:
bors 2019-08-13 10:04:36 +00:00
commit 2cd06826c0
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@ -42,7 +42,12 @@ git checkout tags/1.0.0 # or whatever the latest version is (find out at https:/
cargo install --force --path .
```
Same as above, run `rustlings` to get started.
If there are installation errors, ensure that your toolchain is up to date. For the latest, run:
```bash
rustup update
```
Then, same as above, run `rustlings` to get started.
## Doing exercises