0.1.1 fails to build with rust stable (1.69.0)

[olivier-fs]

Nice to have process trees on Windows ; GUIs like Process Explorer or TMX are fine but they can't be used in scripts/tools.

I hit a minor issue : 0.1.1 builds and runs fine but only with +nightly:

 $ cargo install proctree
.
.
.
   Compiling proctree v0.1.1
error[E0554]: `#![feature]` may not be used on the stable release channel
 --> C:\Users\olivier\.cargo\registry\src\github.com-1ecc6299db9ec823\proctree-0.1.1\src\main.rs:1:12
  |
1 | #![feature(drain_filter)]
  |            ^^^^^^^^^^^^

$ cargo --version
cargo 1.69.0 (6e9a83356 2023-04-12)

Platform : Windows 10

Nightly :

 $ cargo install +nightly proctree
.
.
.
   Compiling proctree v0.1.1
    Finished release [optimized] target(s) in 23.20s
  Installing C:\Users\olivier\.cargo\bin\proctree.exe
   Installed package `proctree v0.1.1` (executable `proctree.exe`)

$ cargo +nightly --version
cargo 1.71.0-nightly (09276c703 2023-05-16)

Runs fine

$ proctree
├──0 Idle
├──4 System
│  ├──88 Secure System
│  ├──3628 Memory Compression
│  ├──536 smss.exe
│  └──156 Registry
├──684 bash.exe
├──936 csrss.exe
├──1028 wininit.exe
│  ├──1272 fontdrvhost.exe
│  ├──1120 LsaIso.exe
│  ├──1128 lsass.exe
│  └──1100 services.exe
│     ├──1888 svchost.exe

Good job !

[ynuwenhof]

Hey,

Unfortunately, the drain_filter function is still nightly only and requires the feature gate #![feature(drain_filter)] it might make sense to account for this in the installation instructions or change to a different approach until the API has been stabilized.

Kind Regards!

[olivier-fs]

Hi

Yes sorry for having been unclear about "minor" issue : I meant that's only a doc issue, not an actual bug.

Though I greatly value the FP way, maybe a simple while + remove loop as in drain_filter will fit until this feature is stabilized (though it will perform worse).

Rust is gaining a lot of traction, and newcomers may not know about nightly toolchain.
Since I moved away from nodejs to tokio for my backend code I can't stand 'npm install' problems anymore, and I give myself duty to report anything that makes the rust experience sub-optimal, morevorer about tools I 'cargo install'.

Sincerely