[ZK Stack] - annot find function exists in module fs

[virgil2019]

Team or Project

No response

Module Affected

• System contracts (era-system-contracts)
• Smart contracts (era-contracts)
• zkEVM (era-zk_evm)
• Server (zksync-era)
• Prover (era-boojum)
• Fee withdrawer (era-fee-withdrawer)
• Block Explorer (clock-explorer)
• Portal - Wallet + Bridge (dapp-portal)
• Other (please specify below)

Rust Version

1.79.0

Operating System

• Ubuntu
• MacOS
• Windows
• Other (Please specify below)

Issue Description

zkstackup

Expected Behavior

Compile successfully

Current Behavior

Compiling zksync_contracts v0.1.0 (/home/ubuntu/.cargo/git/checkouts/zksync-era-657998444dcd9ed9/3cffdb2/core/lib/contracts)
error[E0425]: cannot find function exists in module fs
--> /home/ubuntu/.cargo/git/checkouts/zksync-era-657998444dcd9ed9/3cffdb2/core/lib/contracts/src/lib.rs:320:12
|
320 | if fs::exists(&bytecode_path)
| ^^^^^^ not found in fs

error[E0425]: cannot find function exists in module fs
--> /home/ubuntu/.cargo/git/checkouts/zksync-era-657998444dcd9ed9/3cffdb2/core/lib/contracts/src/lib.rs:327:16
|
327 | if fs::exists(&bytecode_path_legacy)
| ^^^^^^ not found in fs

Repository Link (if applicable)

No response

Additional Details

No response

Prior Research

• Yes, I searched for similar issues and did not find any matching ones.

[gleenai[bot]]

The error you're encountering indicates that the exists function is not found in the fs module. This is likely because the Rust standard library does not include an exists function directly under fs. Instead, you should use the Path struct from the std::path module to check for the existence of a file.

Here’s how you can modify your code:

1. Import the Path struct:

   use std::path::Path;

2. Replace fs::exists with Path::new and exists:

   if Path::new(&bytecode_path).exists() {
       // Your code here
   }
   
   if Path::new(&bytecode_path_legacy).exists() {
       // Your code here
   }

This change should resolve the compilation errors related to the exists function. If you encounter further issues or need additional assistance, feel free to ask!

Your feedback helps us serve you better. If this fully addresses your question, please give it a thumbs up. If it doesn't, please give it a thumbs down. This will inform the community and team so we can improve our support.

[kaymomin]

Hi @virgil2019, thanks for raising the issue. I'll investigate and get back to you asap.

[kaymomin]

@virgil2019 Did you try reinstalling/updating all the pre-requisite dependencies? If not, please:

1. Make sure your machine satisfies the system requirements for running the project. You can find the detailed requirements here.

2. Follow the instructions in the Setup Dev Guide to install or update the dependencies for the zksync-era repository.

3. Make sure you have the latest version of foundry-zksync installed -> installation guide.

Once the above steps are complete, try running the zkstackup command again.

Let me know how it goes or if you encounter any further issues.

[virgil2019]

I does not work

[sachanayush47]

The problem is with rust compiler. Upgrade it to 1.82.0 and then try again.

[kaymomin]

@virgil2019 checking if this worked for you?

[virgil2019]

It works for me