warning: use of deprecated item 'ethereum_types::H256::from_slice': unconventional API, replaced by new_from_slice in version 0.3

[harishbm34]

How to resolve this warning ?

I have been using the latest version of the "web3 = "0.5.1" in Cargo.toml.

If I use, "git" path for web3 in the Cargo.toml (web3 = { git = "https://github.com/tomusdrw/rust-web3" }), getting the errors like below:

--> /Users/harisha/.cargo/git/checkouts/rust-web3-ebc1a09fd5a9a2a2/8a2cfff/src/types/traces.rs:4:20
|
4 | use serde_derive::{Deserialize, Serialize};
| ^^^^^^^^^^^ no Deserialize in the root. Did you mean to use Serialize?

[tomusdrw]

@harishbm34 please update your Rust compiler, to fix serde_derive imports.
Regarding the warning, can you please post your Cargo.lock file? I'm not sure how you can get this warning, cause from_slice is not realy present in the codebase afaict.

[harishbm34]

Yes, after updating the Rust compiler I am not getting any error but still I can see the warnings.

Request you to please help me to fix this.

Please find the attachment for the Cargo.lock file :
Cargo_lock.txt

[tomusdrw]

Seems that sputnikvm-precompiled-interchaintrx crate is using ethereum-types as well, are you sure there are no occurences of ::from_slice there?

That said: the warnings are currently not fixable (see paritytech/parity-common#90). You need to bump fixed-hash to 0.3, but it requires bumping all crates depending on fixed-hash. The main one would be ethereum-types, which is already updated in the repo, but not yet released on crates.io.
We need to wait for ethereum-types release, and then I can update web3.

[harishbm34]

Your guess is right, I am using ::from_slice inside the "sputnikvm-precompiled-interchaintrx" crate.

We need to wait for ethereum-types release, and then I can update web3 --> thanks a lot for your help. I was wondering about the warnings. Now realised, that's not the issue with "rust-web3". Let's wait for ethereum-types crate release. You can proceed to close this issue.

[tomusdrw]

@harishbm34 ok, cool. Will try to release new web3 as soon as ethereum-types is up on crates.io. Cheers!

[D4nte]

Hi @tomusdrw, ethereum-types is now released on crates.io. Version 0.5.2 that depends on fixed-hash 0.3.

Can you please update web3?

[tomusdrw]

@D4nte see https://github.com/paritytech/ethabi/pull/149