(anvil): forge script breaks when run with Blast mainnet RPC against anvil forks

[Sabnock01]

Component

Anvil

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

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (dbc48ea 2024-04-03T00:17:03.697365187Z)

What command(s) is the bug in?

anvil --fork-url

Operating System

Linux

Describe the bug

Whenever running a forge script against a forked Blast mainnet anvil instance (created with anvil --fork-url $BLAST_RPC) the output of the scripts will give the following error:

Error:
builder error

Context:
- relative URL without a base

This behavior is consistent across all Blast mainnet RPC's.
It is not the case for Blast Sepolia RPC's which work without issue.

It is also not the case when running a forge script against the RPC itself, as opposed to the anvil instance with --rpc-url http://localhost:8545

[mattsse]

do you have a repro for this we can use for debugging

cc @zerosnacks @yash-atreya

[Sabnock01]

This was a consistent issue on Wednesday for all Blast mainnet RPC's but since then I've not encountered it and have not been able to repo. I assume it was something on their end and not Foundry. In any case, the error message seems misleading.

[zerosnacks]

I think it makes sense to turn this ticket into a error improvement feature request but considering the originating error is from https://github.com/servo/rust-url/blob/54346fa288e16b25b71c45149d7067c752b450e0/url/src/parser.rs#L84 (as used by reqwest) I don't see an actionable item here. Considering the original issue has been resolved I'll mark it as so.

Feel free to re-open if you disagree