Add comment about rustc version in README

2018-05-03 08:38:09 +09:00 · 2018-05-03 08:38:09 +09:00 · 00a16db9cd
commit 00a16db9cd
parent 48d94143e7
1 changed files with 7 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -106,6 +106,13 @@ $ source $HOME/.cargo/env
 $ rustup component add rustfmt-preview
 ```

+If your rustc version is lower than 1.25.0, please update and install rustfmt:
+
+```bash
+$ rustup update
+$ rustup component add rustfmt-preview
+```
+
 Download the source code:

 ```bash