Unable to compile rust beta on OpenBSD 7.3

[samebchase]

Hi,

I'm on:

> uname -a
OpenBSD carolyn.my.domain 7.3 GENERIC.MP#1125 amd64
> cargo --version
cargo 1.68.0
> rustc --version
rustc 1.68.0 (2c8cc3432 2023-03-06) (built from a source tarball)
samuel@carolyn ~/s/build-rust (master)>

and the error, I get is:

error[E0658]: use of unstable library feature 'is_terminal'
  --> config.rs:15:5
   |
15 | use std::io::IsTerminal;
   |     ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #98070 <https://github.com/rust-lang/rust/issues/98070> for more information

error[E0658]: use of unstable library feature 'is_terminal'
    --> config.rs:1061:50
     |
1061 |         config.stdout_is_tty = std::io::stdout().is_terminal();
     |                                                  ^^^^^^^^^^^
     |
     = note: see issue #98070 <https://github.com/rust-lang/rust/issues/98070> for more information

error[E0658]: use of unstable library feature 'is_terminal'
    --> config.rs:1062:50
     |
1062 |         config.stderr_is_tty = std::io::stderr().is_terminal();
     |                                                  ^^^^^^^^^^^
     |
     = note: see issue #98070 <https://github.com/rust-lang/rust/issues/98070> for more information

error[E0658]: use of unstable library feature 'is_some_and'
  --> sanity.rs:66:53
   |
66 |         env::var_os("BOOTSTRAP_SKIP_TARGET_SANITY").is_some_and(|s| s == "1" || s == "true");
   |                                                     ^^^^^^^^^^^
   |
   = note: see issue #93050 <https://github.com/rust-lang/rust/issues/93050> for more information

For more information about this error, try `rustc --explain E0658`.
error: could not compile `bootstrap` due to 4 previous errors

Thanks for the script!

[semarie]

to build rustc beta (upcoming 1.74.0), you need a rustc stable (stable in sense of rustc release: 1.73.0). as you try to build it with 1.68.0, it failed.

I am just suprised that the build script didn't catch the version mismatch.

[samebchase]

@semarie Thanks for the quick reply. 🙏

Hmm, I after upgrading to OpenBSD 7.4 which packages 1.72, and still it failed. As you said it seems 1.73 is required.

What's the best way of building the latest stable then?

[semarie]

with 1.72.0, you could build 1.73.0. and next you could build beta and nightly.

rustc version X only support building from version X-1 (or version X).

you could also upgrade to OpenBSD -current, and you will have rustc 1.73.0 from ports (using pkg_add).

depending your need regarding rustc features from beta or nightly, it is possible to opt-in for have unstable features presents in 1.72.0 by passing RUSTC_BOOTSTRAP=1 in your environment.

[samebchase]

Thanks a lot for the info! This helps greatly. 👍