thread 'main' panicked at 'Unknown compiler version, upgrade core_io? ...core_io-0.1.20210325/build.rs:73:69

[yaoxin-jing]

Hey, I got this error although I downgraded the compiler version to

rustc 1.48.0-nightly (fc2daaae6 2020-09-28)

Any idea why I got this?

[yaoxin-jing]

@parasyte @roblabla @jethrogb

[parasyte]

Personally, I don't know the status of this crate (other than unmaintained). I have three suggestions:

1. You should probably be using nightly-20210325 with the latest release version. In my experience, there is some version flexibility, but not a whole lot.
2. Applying the patch in WIP: Update to 2021-04-13 #36 seems like it will update it to nightly-20210413. You can start to see what I mean by not having much version flexibility.
3. Try a different solution, if you can. There is a similar crate with more activity that I have been considering: https://github.com/dataphract/acid_io