failed to run custom build command for `core_io v0.1.20190701`

[pranav-bhatt]

Hi! I tried building my project with your library, but ran into the following issue:

error: failed to run custom build command for `core_io v0.1.20190701`

Caused by:
  process didn't exit successfully: `/home/pranav/Desktop/sdk-rust/target/debug/build/core_io-a9856cd06fd266b7/build-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'Unknown compiler version, upgrade core_io?', /home/pranav/.cargo/registry/src/github.com-1ecc6299db9ec823/core_io-0.1.20190701/build.rs:73:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

This is the part I added in my Cargo.toml:

[dependencies.core_io]
rand = { git = "https://github.com/jethrogb/rust-core_io" }

Any inputs? Thanks!

[jethrogb]

Crate version 0.1.20190701 supports only nightly compilers from 2019-07-01 or older