error[E0658]: use of unstable library feature 'lazy_cell'

[chillinbythetree]

Just cloned the repo and ran "cargo build". It fails to build due to "error[E0658]: use of unstable library feature 'lazy_cell'". Here is the full log:

Compiling simp v3.6.1 (/home/gir/Code/rust/projects/simp)
error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:1:5
|
1 | use std::sync::LazyLock;
| ^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:3:17
|
3 | pub static JXL: LazyLock<&[&'static str]> = LazyLock::new(|| &["jxl"]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:3:45
|
3 | pub static JXL: LazyLock<&[&'static str]> = LazyLock::new(|| &["jxl"]);
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:5:18
|
5 | pub static HEIF: LazyLock<&[&'static str]> = LazyLock::new(|| &["heif", "heic"]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:5:46
|
5 | pub static HEIF: LazyLock<&[&'static str]> = LazyLock::new(|| &["heif", "heic"]);
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:7:20
|
7 | pub static RASTER: LazyLock<&[&'static str]> = LazyLock::new(|| {
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:7:48
|
7 | pub static RASTER: LazyLock<&[&'static str]> = LazyLock::new(|| {
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:14:33
|
14 | pub static UNDETECTABLE_RASTER: LazyLock<&[&'static str]> = LazyLock::new(|| &["tga"]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:14:61
|
14 | pub static UNDETECTABLE_RASTER: LazyLock<&[&'static str]> = LazyLock::new(|| &["tga"]);
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:16:20
|
16 | pub static VECTOR: LazyLock<&[&'static str]> = LazyLock::new(|| &["svg"]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:16:48
|
16 | pub static VECTOR: LazyLock<&[&'static str]> = LazyLock::new(|| &["svg"]);
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:18:17
|
18 | pub static RAW: LazyLock<&[&'static str]> = LazyLock::new(|| {
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:18:45
|
18 | pub static RAW: LazyLock<&[&'static str]> = LazyLock::new(|| {
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:25:23
|
25 | pub static PHOTOSHOP: LazyLock<&[&'static str]> = LazyLock::new(|| &["psd"]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:25:51
|
25 | pub static PHOTOSHOP: LazyLock<&[&'static str]> = LazyLock::new(|| &["psd"]);
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:27:24
|
27 | pub static EXTENSIONS: LazyLock<Vec<&'static str>> = LazyLock::new(|| {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:27:54
|
27 | pub static EXTENSIONS: LazyLock<Vec<&'static str>> = LazyLock::new(|| {
| ^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:3:45
|
3 | pub static JXL: LazyLock<&[&'static str]> = LazyLock::new(|| &["jxl"]);
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:5:46
|
5 | pub static HEIF: LazyLock<&[&'static str]> = LazyLock::new(|| &["heif", "heic"]);
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:7:48
|
7 | pub static RASTER: LazyLock<&[&'static str]> = LazyLock::new(|| {
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:14:61
|
14 | pub static UNDETECTABLE_RASTER: LazyLock<&[&'static str]> = LazyLock::new(|| &["tga"]);
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:16:48
|
16 | pub static VECTOR: LazyLock<&[&'static str]> = LazyLock::new(|| &["svg"]);
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:18:45
|
18 | pub static RAW: LazyLock<&[&'static str]> = LazyLock::new(|| {
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:25:51
|
25 | pub static PHOTOSHOP: LazyLock<&[&'static str]> = LazyLock::new(|| &["psd"]);
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

error[E0658]: use of unstable library feature 'lazy_cell'
--> src/util/extensions.rs:27:54
|
27 | pub static EXTENSIONS: LazyLock<Vec<&'static str>> = LazyLock::new(|| {
| ^^^^^^^^^^^^^
|
= note: see issue #109736 rust-lang/rust#109736 for more information

For more information about this error, try rustc --explain E0658.
error: could not compile simp (bin "simp") due to 25 previous errors

[Kl4rry]

Update your compiler. Simp only supports the most recent rust compiler.

[chillinbythetree]

Update your compiler. Simp only supports the most recent rust compiler.

Yup, that was it. Used the latest update from the OS but it was at 1.79 and not the latest 1.80 release. Changed repository and now it builds. Thanks.