Could not instantiate forked environment with fork url

[heitor-lassarote]

Component

Forge

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (7bef9ca 2024-06-26T00:18:22.002685333Z)

What command(s) is the bug in?

forge script

Operating System

Linux

Describe the bug

After trying to deploy a pretty simple mock ERC-20 token to the Polygon Amoy testnet, I got this error, which the CLI asked me to report as a bug:

forge script script/MockToken.s.sol --rpc-url https://rpc-amoy.polygon.technology/ --broadcast -vvvv
[⠊] Compiling...
No files changed, compilation skipped
2024-11-21T15:25:27.218837Z ERROR foundry_evm_core::fork::init: It looks like you're trying to fork from an older block with a non-archive node which is not supported. Please try to change your RPC url to an archive node if the issue persists.
The application panicked (crashed).
Message:  Unable to create fork: 
Could not instantiate forked environment with fork url: https://rpc-amoy.polygon.technology/
Location: crates/evm/core/src/backend/mod.rs:454

This is a bug. Consider reporting it at https://github.com/foundry-rs/foundry

  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   1: __libc_start_main<unknown>
      at <unknown source file>:<unknown line>

Run with COLORBT_SHOW_HIDDEN=1 environment variable to disable frame filtering.
[1]    15730 IOT instruction (core dumped)  forge script script/MockToken.s.sol --rpc-url  --broadcast -vvvv

The script doesn't do much:

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Script} from "forge-std/Script.sol";
import {MockToken} from "../src/MockToken.sol";

contract MockTokenScript is Script {
    function run() external {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
        vm.startBroadcast(deployerPrivateKey);

        new MockToken("Mock ERC20 Token", "MCK");

        vm.stopBroadcast();
    }
}

And the contract is as dumb as possible:

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract MockToken is ERC20 {
    constructor(
        string memory _name,
        string memory _symbol
    ) ERC20(_name, _symbol) {}

    function mint(address to, uint256 amount) public virtual {
        _mint(to, amount);
    }

    function burn(address form, uint amount) public virtual {
        _burn(form, amount);
    }
}

Note: foundryup --version returns an empty string, I was not able to find out its version.

[grandizzy]

@heitor-lassarote pls add forge --version output, looks like an older version as sources doesn't match crates/evm/core/src/backend/mod.rs:454
Also there's a good hint what happens: 2024-11-21T15:25:27.218837Z ERROR foundry_evm_core::fork::init: It looks like you're trying to fork from an older block with a non-archive node which is not supported. Please try to change your RPC url to an archive node if the issue persists.

[grandizzy]

nm, I see forge version now, that's quite old, you should run foundryup and retest

[grandizzy]

Confirming forge doesn't panic with latest but prints message

Going to close for now, please reopen if still an issue. thank you