Build fails with Rust 1.54.0

[sfragis]

Building rust-cv with Rust 1.54.0 fails due to this error:

   [...]
   Compiling cv-sfm v0.1.0 (/Users/fast/Projects/Personal/rust/rust-cv/cv-sfm)
error[E0658]: use of unstable library feature 'array_map'
    --> cv-sfm/src/lib.rs:1826:27
     |
1826 |         let poses = views.map(|view| {
     |                           ^^^
     |
     = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information

error[E0658]: use of unstable library feature 'array_map'
    --> cv-sfm/src/lib.rs:1844:23
     |
1844 |                 views.map(|view| {
     |                       ^^^
     |
     = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information

error[E0658]: use of unstable library feature 'array_map'
  --> cv-sfm/src/export.rs:95:50
   |
95 |             [(1, 1), (1, -1), (-1, -1), (-1, 1)].map(|(up, right)| {
   |                                                  ^^^
   |
   = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0658`.
error: could not compile `cv-sfm`

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed

What version of Rust shall I use instead?

[xd009642]

The CI only runs on nightly, so I'd default to running the latest nightly and then upgrading next time a newer unstable feature appears

[vadixidav]

Building rust-cv with Rust 1.54.0 fails due to this error:

   [...]
   Compiling cv-sfm v0.1.0 (/Users/fast/Projects/Personal/rust/rust-cv/cv-sfm)
error[E0658]: use of unstable library feature 'array_map'
    --> cv-sfm/src/lib.rs:1826:27
     |
1826 |         let poses = views.map(|view| {
     |                           ^^^
     |
     = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information

error[E0658]: use of unstable library feature 'array_map'
    --> cv-sfm/src/lib.rs:1844:23
     |
1844 |                 views.map(|view| {
     |                       ^^^
     |
     = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information

error[E0658]: use of unstable library feature 'array_map'
  --> cv-sfm/src/export.rs:95:50
   |
95 |             [(1, 1), (1, -1), (-1, -1), (-1, 1)].map(|(up, right)| {
   |                                                  ^^^
   |
   = note: see issue #75243 <https://github.com/rust-lang/rust/issues/75243> for more information

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0658`.
error: could not compile `cv-sfm`

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed

What version of Rust shall I use instead?

Sorry about that. I actually just changed the CI over to nightly again on main recently. I will be creating another official release of Rust CV once the next version of Rust comes out with the array map feature included, and you will be able to use that official release with Rust stable. I will leave this issue open until that is done.

[sfragis]

Thank you, I tried with rust nightly and can confirm code builds (rustc 1.56.0-nightly (0fa319039 2021-08-12)).