rten compile error (size_of not found)

[potatoes1286]

title. not knowledgeable on rust so i do not know if i am doing something wrong, but i just used the command.

potatoes@fedora:~/Documents/temp-working$ cargo install ocrs-cli --locked
    Updating crates.io index
  Installing ocrs-cli v0.10.2
    Updating crates.io index
    Updating crates.io index
   Compiling cfg-if v1.0.0
   Compiling libc v0.2.151
   Compiling crossbeam-utils v0.8.18
   Compiling semver v1.0.20
   Compiling proc-macro2 v1.0.89
   Compiling crc32fast v1.3.2
   Compiling smallvec v1.13.2
   Compiling simd-adler32 v0.3.7
   Compiling unicode-ident v1.0.12
   Compiling rustls-pki-types v1.11.0
   Compiling bitflags v1.3.2
   Compiling rayon-core v1.12.1
   Compiling adler2 v2.0.0
   Compiling spin v0.9.8
   Compiling httparse v1.10.0
   Compiling untrusted v0.9.0
   Compiling autocfg v1.1.0
   Compiling itoa v1.0.10
   Compiling percent-encoding v2.3.1
   Compiling miniz_oxide v0.8.0
   Compiling thiserror v2.0.3
   Compiling anyhow v1.0.95
   Compiling bytes v1.10.0
   Compiling rten-tensor v0.16.0
   Compiling log v0.4.25
   Compiling fnv v1.0.7
   Compiling serde v1.0.194
   Compiling rten-simd v0.16.0
   Compiling num-traits v0.2.17
   Compiling rustls v0.23.22
   Compiling rustc_version v0.4.0
   Compiling either v1.9.0
   Compiling rten-vecmath v0.16.0
   Compiling fdeflate v0.3.3
   Compiling byteorder-lite v0.1.0
   Compiling serde_json v1.0.134
   Compiling utf8_iter v1.0.4
   Compiling flate2 v1.0.35
   Compiling crossbeam-epoch v0.9.17
   Compiling quote v1.0.35
   Compiling flatbuffers v24.3.25
   Compiling http v1.2.0
   Compiling syn v2.0.87
   Compiling cc v1.0.83
   Compiling getrandom v0.2.11
   Compiling crossbeam-deque v0.8.4
   Compiling num_cpus v1.16.0
   Compiling subtle v2.5.0
   Compiling quick-error v2.0.1
   Compiling rustc-hash v2.0.0
   Compiling once_cell v1.19.0
   Compiling base64 v0.22.1
   Compiling idna_adapter v1.0.0
   Compiling zune-core v0.4.12
   Compiling zeroize v1.7.0
   Compiling idna v1.0.3
   Compiling image-webp v0.2.0
   Compiling png v0.17.16
   Compiling rten-imageproc v0.16.0
   Compiling zune-jpeg v0.4.13
   Compiling rayon v1.10.0
   Compiling ureq-proto v0.3.0
   Compiling webpki-roots v0.26.8
   Compiling rustls-pemfile v2.2.0
   Compiling ring v0.17.7
   Compiling form_urlencoded v1.2.1
   Compiling bytemuck v1.14.0
   Compiling memchr v2.7.4
   Compiling ryu v1.0.16
   Compiling utf-8 v0.7.6
   Compiling url v2.5.4
   Compiling lexopt v0.3.0
   Compiling home v0.5.9
   Compiling image v0.25.5
   Compiling thiserror-impl v2.0.3
   Compiling rten v0.16.0
error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/im2col.rs:244:31
    |
244 |         const K_TILE: usize = size_of::<i32>() / size_of::<i8>();
    |                               ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/im2col.rs:244:50
    |
244 |         const K_TILE: usize = size_of::<i32>() / size_of::<i8>();
    |                                                  ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/kernels/simd_generic.rs:271:40
    |
271 |             let min_len = depth * MR * size_of::<f32>();
    |                                        ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `align_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/kernels/simd_generic.rs:570:38
    |
570 |     assert_eq!(a.as_ptr() as usize % align_of::<i32>(), 0);
    |                                      ^^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::align_of;
    |
1   + use std::mem::align_of;
    |

error[E0425]: cannot find function `align_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing/int8.rs:32:17
   |
32 |     let align = align_of::<i32>();
   |                 ^^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
8  + use core::mem::align_of;
   |
8  + use std::mem::align_of;
   |

error[E0425]: cannot find function `align_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing/int8.rs:166:17
    |
166 |     let align = align_of::<i32>();
    |                 ^^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
8   + use core::mem::align_of;
    |
8   + use std::mem::align_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing/int8.rs:245:41
    |
245 |     let row_sum_offset = a.len() - MR * size_of::<i32>();
    |                                         ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
8   + use core::mem::size_of;
    |
8   + use std::mem::size_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing/int8.rs:253:41
    |
253 |     let col_sum_offset = b.len() - NR * size_of::<i32>();
    |                                         ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
8   + use core::mem::size_of;
    |
8   + use std::mem::size_of;
    |

error[E0425]: cannot find function `size_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:57:51
   |
57 |     let size = rows.next_multiple_of(MR) * cols * size_of::<T>();
   |                                                   ^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
1  + use core::mem::size_of;
   |
1  + use std::mem::size_of;
   |

error[E0425]: cannot find function `size_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:58:36
   |
58 |     let panel_stride = MR * cols * size_of::<T>();
   |                                    ^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
1  + use core::mem::size_of;
   |
1  + use std::mem::size_of;
   |

error[E0425]: cannot find function `align_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:59:29
   |
59 |     PackedLayout::new(size, align_of::<T>(), panel_stride)
   |                             ^^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
1  + use core::mem::align_of;
   |
1  + use std::mem::align_of;
   |

error[E0425]: cannot find function `size_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:99:51
   |
99 |     let size = cols.next_multiple_of(NR) * rows * size_of::<T>();
   |                                                   ^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
1  + use core::mem::size_of;
   |
1  + use std::mem::size_of;
   |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:100:36
    |
100 |     let panel_stride = NR * rows * size_of::<T>();
    |                                    ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `align_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:101:29
    |
101 |     PackedLayout::new(size, align_of::<T>(), panel_stride)
    |                             ^^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::align_of;
    |
1   + use std::mem::align_of;
    |

error[E0425]: cannot find function `align_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:234:26
    |
234 |         assert!(align <= align_of::<PackElem>());
    |                          ^^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::align_of;
    |
1   + use std::mem::align_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:236:37
    |
236 |         let buf_len = size.div_ceil(size_of::<PackElem>());
    |                                     ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `align_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:256:26
    |
256 |         assert!(align <= align_of::<PackElem>());
    |                          ^^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::align_of;
    |
1   + use std::mem::align_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:258:37
    |
258 |         let buf_len = size.div_ceil(size_of::<PackElem>());
    |                                     ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:268:60
    |
268 |         let rounded_len = initialized_len.next_multiple_of(size_of::<PackElem>());
    |                                                            ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `size_of` in this scope
   --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/gemm/packing.rs:271:37
    |
271 |         let buf_len = rounded_len / size_of::<PackElem>();
    |                                     ^^^^^^^ not found in this scope
    |
help: consider importing one of these items
    |
1   + use core::mem::size_of;
    |
1   + use std::mem::size_of;
    |

error[E0425]: cannot find function `align_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/slice_cast.rs:22:34
   |
22 |     if (src.as_ptr() as usize) % align_of::<Dst>() != 0 {
   |                                  ^^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
1  + use core::mem::align_of;
   |
1  + use std::mem::align_of;
   |

error[E0425]: cannot find function `size_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/slice_cast.rs:27:23
   |
27 |     if src_byte_len % size_of::<Dst>() != 0 {
   |                       ^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
1  + use core::mem::size_of;
   |
1  + use std::mem::size_of;
   |

error[E0425]: cannot find function `size_of` in this scope
  --> /home/potatoes/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rten-0.16.0/src/slice_cast.rs:31:25
   |
31 |     Some(src_byte_len / size_of::<Dst>())
   |                         ^^^^^^^ not found in this scope
   |
help: consider importing one of these items
   |
1  + use core::mem::size_of;
   |
1  + use std::mem::size_of;
   |

For more information about this error, try `rustc --explain E0425`.
error: could not compile `rten` (lib) due to 23 previous errors
warning: build failed, waiting for other jobs to finish...
error: failed to compile `ocrs-cli v0.10.2`, intermediate artifacts can be found at `/tmp/cargo-installc3Mkwb`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.

Fedora linux 41.

[robertknight]

You need to update to Rust v1.80 or later. The compile error here relates to rust-lang/rust#123168, which is a change that shipped in v1.80.

[robertknight]

There is an issue in rten here that it doesn't declare the minimum Rust version. If it did, that would have resulted in a more helpful error.

[potatoes1286]

Yup, that was it! Thanks a ton!

Had to go through some extra hoops because rustup update was failing as well. But after reinstall, rten installs fine.

Sorry about the silly error. Maybe add a disclaimer to rustup update for other ppl who forget 🙃