CODEWITHSUNDEEP
rustrust-piston
Dennis Moncy
Dennis Moncy

Reputation: 141

error[E0658]: `cfg(doctest)` is experimental and subject to change

I am relatively new to rust and I was trying to build a game using an online tutorial when I encountered this error. Can someone please tell me what this error is and how to solve it?

I switched from stable rust version to nightly using rustup default nightly :- rustc 1.46.0-nightly (feb3536eb 2020-06-09). still the error didn't go

These are the dependencies I am trying to install:

piston = "0.50.0"
piston2d-graphics = "0.36.0"
pistoncore-glutin_window = "0.64.0"
piston2d-opengl_graphics = "0.72.0"

Thanks in advance!!

Upvotes: 8

Views: 1781

Answers (2)

pangratt12345
pangratt12345

Reputation: 95

in case when you can't update rust with below error after running rustup update, like in my case

rustup update  
info: self-update is disabled for this build of rustup  
info: any updates to rustup will need to be fetched with your system package manager

Then the fix for me was to remove old versions of rust, cargo (1.75) from apt and snap in Linux and then to install new versions (1.82) of rust, cargo using official way like below

# removal of old version
sudo snap remove rustup  
sudo apt remove rust*  
sudo apt autoremove
# installation of official new version like mentioned in website below  
curl --proto '=https' --tlsv1.3 https://sh.rustup.rs -sSf | sh

https://www.digitalocean.com/community/tutorials/install-rust-on-ubuntu-linux

Upvotes: 0

Dennis Moncy
Dennis Moncy

Reputation: 141

Updating to the latest version of rust using rustup update solves the error

Upvotes: 6

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