Unable to compile code

[noammor]

I could not get the package to build using the latest versions of Rust and maturin.

Here is the build log:

   Compiling autocfg v1.0.1
   Compiling proc-macro2 v1.0.27
   Compiling unicode-xid v0.2.2
   Compiling libc v0.2.98
   Compiling syn v1.0.73
   Compiling cfg-if v1.0.0
   Compiling proc-macro-hack v0.5.19
   Compiling rawpointer v0.2.1
   Compiling getrandom v0.1.16
   Compiling inventory v0.1.10
   Compiling unindent v0.1.7
   Compiling smallvec v1.6.1
   Compiling scopeguard v1.1.0
   Compiling ppv-lite86 v0.2.10
   Compiling ndarray v0.14.0
   Compiling pyo3 v0.13.2
   Compiling blas-src v0.6.1
   Compiling either v1.6.1
   Compiling hashbrown v0.11.2
   Compiling cfg-if v0.1.10
   Compiling fast_ctc_decode v0.3.0 (/home/noam/code/fast-ctc-decode)
   Compiling instant v0.1.10
   Compiling matrixmultiply v0.3.1
   Compiling matrixmultiply v0.2.4
   Compiling lock_api v0.4.4
   Compiling num-traits v0.2.14
   Compiling num-integer v0.1.44
   Compiling indexmap v1.7.0
   Compiling itertools v0.9.0
   Compiling quote v1.0.9
   Compiling parking_lot_core v0.8.3
   Compiling cblas-sys v0.1.4
   Compiling rand_core v0.5.1
   Compiling parking_lot v0.11.1
   Compiling rand_chacha v0.2.2
   Compiling num-complex v0.3.1
   Compiling num-complex v0.4.0
   Compiling noisy_float v0.1.15
   Compiling paste-impl v0.1.18
   Compiling rand v0.7.3
   Compiling ndarray v0.15.3
   Compiling paste v0.1.18
   Compiling ndarray-stats v0.4.0
   Compiling pyo3-macros-backend v0.13.2
   Compiling ghost v0.1.2
   Compiling indoc-impl v0.3.6
   Compiling ctor v0.1.20
   Compiling inventory-impl v0.1.10
   Compiling pyo3-macros v0.13.2
   Compiling indoc v0.3.6
   Compiling numpy v0.13.2
error[E0554]: `#![feature]` may not be used on the stable release channel
 --> src/lib.rs:1:1
  |
1 | #![feature(static_nobundle)]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0554]: `#![feature]` may not be used on the stable release channel
 --> src/lib.rs:2:1
  |
2 | #![feature(test)] // benchmarking
  | ^^^^^^^^^^^^^^^^^

error[E0308]: mismatched types
   --> src/lib.rs:106:21
    |
106 |                     &network_output,
    |                     ^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 2]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 2]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:143:21
    |
143 |                     &network_output,
    |                     ^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 3]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 3]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:144:21
    |
144 |                     &init_state,
    |                     ^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 1]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 1]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:179:21
    |
179 |                     &network_output,
    |                     ^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 3]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 3]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:180:21
    |
180 |                     &init_state,
    |                     ^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 1]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 1]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:255:21
    |
255 |                     &network_output,
    |                     ^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 2]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 2]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: `match` arms have incompatible types
   --> src/lib.rs:364:21
    |
356 |               let envelope_view = match envelope {
    |  _________________________________-
357 | |                 Some(env) => env.as_array(),
    | |                              -------------- this is found to be of type `ndarray::ArrayBase<ndarray::ViewRepr<&usize>, ndarray::dimension::dim::Dim<[usize; 2]>>`
358 | |                 None => {
359 | |                     default_envelope =
...   |
364 | |                     default_envelope.view()
    | |                     ^^^^^^^^^^^^^^^^^^^^^^^ expected struct `ndarray::ArrayBase`, found struct `ArrayBase`
365 | |                 }
366 | |             };
    | |_____________- `match` arms have incompatible types
    |
    = note: expected type `ndarray::ArrayBase<ndarray::ViewRepr<&usize>, ndarray::dimension::dim::Dim<[usize; 2]>>`
	     found struct `ArrayBase<ViewRepr<&usize>, Dim<[usize; 2]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:373:21
    |
373 |                     &network_output_1,
    |                     ^^^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 2]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 2]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:374:21
    |
374 |                     &network_output_2,
    |                     ^^^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 2]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 2]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: `match` arms have incompatible types
   --> src/lib.rs:448:21
    |
440 |               let envelope_view = match envelope {
    |  _________________________________-
441 | |                 Some(env) => env.as_array(),
    | |                              -------------- this is found to be of type `ndarray::ArrayBase<ndarray::ViewRepr<&usize>, ndarray::dimension::dim::Dim<[usize; 2]>>`
442 | |                 None => {
443 | |                     default_envelope =
...   |
448 | |                     default_envelope.view()
    | |                     ^^^^^^^^^^^^^^^^^^^^^^^ expected struct `ndarray::ArrayBase`, found struct `ArrayBase`
449 | |                 }
450 | |             };
    | |_____________- `match` arms have incompatible types
    |
    = note: expected type `ndarray::ArrayBase<ndarray::ViewRepr<&usize>, ndarray::dimension::dim::Dim<[usize; 2]>>`
	     found struct `ArrayBase<ViewRepr<&usize>, Dim<[usize; 2]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:459:21
    |
459 |                     &network_output_1,
    |                     ^^^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 3]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 3]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:460:21
    |
460 |                     &init_state_1,
    |                     ^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 1]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 1]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:461:21
    |
461 |                     &network_output_2,
    |                     ^^^^^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 3]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 3]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error[E0308]: mismatched types
   --> src/lib.rs:462:21
    |
462 |                     &init_state_2,
    |                     ^^^^^^^^^^^^^ expected struct `ArrayBase`, found struct `ndarray::ArrayBase`
    |
    = note: expected reference `&ArrayBase<_, Dim<[usize; 1]>>`
	       found reference `&ndarray::ArrayBase<ndarray::ViewRepr<&f32>, ndarray::dimension::dim::Dim<[usize; 1]>>`
    = note: perhaps two different versions of crate `ndarray` are being used?

error: aborting due to 16 previous errors

Some errors have detailed explanations: E0308, E0554.
For more information about an error, try `rustc --explain E0308`.
error: could not compile `fast_ctc_decode`

To learn more, run the command again with --verbose.

[reddishtg]

Running into the same issue. Trying to compile for Apple's M1 because a package doesn't seem to exit.

[iiSeymour]

These build issues are with the ndarray dependency. I am using nightly-2021-01-01 to build releases - see here.

[reddishtg]

When I tried changing to that nightly build I received an error about being able to get numpy v0.13.2 and a resolver was required.

I'm a real novice when it comes to Rust (and I know this is not what you are supposed to do), but I was able to get around it by editing the Cargo.lock once it was generated. In order to get it to work I changed the ndarray version requirement to 0.14.0 under numpy. It seems that numpy required a range from 0.13.0-0.15.0 and so 0.15.0 was being installed.

[iiSeymour]

Switched to stable rust 1.54.0 and fixed the build issues.