编译失败

[brightmann]

hi.
cd ~
git clone https://github.com/verilab/pressure pressure-by-verilab
git clone https://github.com/verilab/pressure-demo
cd pressure-by-verilab
PRESSURE_INSTANCE=~/pressure-demo cargo run
显示：
...
Compiling clap v2.33.3
Compiling unic-segment v0.9.0
Compiling slug v0.1.4
Compiling actix-web v3.3.2
Compiling globwalk v0.8.1
Compiling rand v0.8.3
Compiling termcolor v1.1.2
Compiling humantime v2.1.0
Compiling entities v1.0.1
Compiling shell-words v1.0.0
Compiling typed-arena v1.7.0
Compiling humansize v1.1.0
Compiling unicode_categories v0.1.1
Compiling env_logger v0.8.2
Compiling toml v0.5.8
Compiling yaml-rust v0.4.4 (https://github.com/verilab/yaml-rust#2a736dde)
Compiling actix-files v0.5.0
Compiling comrak v0.9.0
Compiling tera v1.6.1 (https://github.com/verilab/tera#62bfe1cf)
Compiling pressure v0.1.0 (C:\Users\12799\pressure-by-verilab)
error[E0432]: unresolved import std::lazy
--> src\web.rs:3:43
|
3 | use std::{cmp::min, collections::HashMap, lazy::OnceCell, path::PathBuf};
| ^^^^ could not find lazy in std

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

warning: the feature once_cell has been stable since 1.70.0 and no longer requires an attribute to enable
--> src\lib.rs:1:12
|
1 | #![feature(once_cell)]
| ^^^^^^^^^
|
= note: #[warn(stable_features)] on by default

Some errors have detailed explanations: E0432, E0554.
For more information about an error, try rustc --explain E0432.
warning: pressure (lib) generated 1 warning
error: could not compile pressure (lib) due to 2 previous errors; 1 warning emitted
warning: build failed, waiting for other jobs to finish...

如何解决？谢谢你！