the trait QueryResponses is not implemented for QueryMsg

[byteZorvin]

I am trying to compile a contract the schema.rs has this error.

error: can't compile schema generator for the `wasm32` arch
       hint: are you trying to compile a smart contract without specifying `--lib`?
 --> src/bin/schema.rs:5:5
  |
5 | /     write_api! {
6 | |         instantiate: InstantiateMsg,
7 | |         execute: ExecuteMsg,
8 | |         query: QueryMsg,
9 | |     }
  | |_____^
  |
  = note: this error originates in the macro `write_api` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: the trait bound `QueryMsg: QueryResponses` is not satisfied
 --> src/bin/schema.rs:5:5
  |
5 | /     write_api! {
6 | |         instantiate: InstantiateMsg,
7 | |         execute: ExecuteMsg,
8 | |         query: QueryMsg,
9 | |     }
  | |_____^ the trait `QueryResponses` is not implemented for `QueryMsg`
  |
  = note: this error originates in the macro `write_api` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0277`.
error: could not compile `multi_sig` (bin "schema") due to 2 previous errors

schema.rs

use cosmwasm_schema::write_api;
use multi_sig::msg::{ExecuteMsg, InstantiateMsg, QueryMsg};

fn main() {
    write_api! {
        instantiate: InstantiateMsg,
        execute: ExecuteMsg,
        query: QueryMsg,
    }
}

msg.rs

use cosmwasm_schema::{cw_serde, QueryResponses};
use cosmwasm_std::{Addr, Coin};

#[cw_serde]
pub struct InstantiateMsg {
    pub minimum_approvals: i32,
    pub signers: Vec<Addr>,
}

#[cw_serde]
pub enum ExecuteMsg {
    Approve {},
    Revoke {},
    Execute { to: Addr, funds: Coin },
}

#[cw_serde]
#[derive(QueryResponses)]
pub enum QueryMsg {
    // GetCount returns the current count as a json-encoded number
    #[returns(Valueresp)]
    GetCurrentSignatures {},
}


#[cw_serde]
pub struct Valueresp {
    pub count: i32,
}

[webmaster128]

Hi! The relevant part is

error: can't compile schema generator for the wasm32 arch
hint: are you trying to compile a smart contract without specifying --lib?

What build command are you using?

[byteZorvin]

I am using cargo build --release --target wasm32-unknown-unknown.

I dont want to build it as a library. If I am correct then lib flag will be used for dependecies, and not for main contract. This is my main contract. Though it compiles successfully with the --lib flag, it does not pass the cosmwasm-check.

cosmwasm-check --wasm/path fails with

Available capabilities: {"staking", "iterator", "stargate", "cosmwasm_1_1", "cosmwasm_1_2"}

./target/wasm32-unknown-unknown/release/multi_sig.wasm: failure
Error during static Wasm validation: Wasm bytecode could not be deserialized. Deserialization error: "Unknown opcode 192"
RUST_BACKTRACE=1: failure
No such file or directory (os error 2)

Passes: 0, failures: 2

[webmaster128]

You need the --lib flag. This is how it works.

The cosmwasm-check issue is something different and will be fixed with version 1.3. See https://twitter.com/CosmWasm/status/1670690339902967810

[byteZorvin]

Thanks for the help.

1. It works with --lib flag.
2. I downgraded my rust to 1.69 and it still coswmwasm-check does not work

[webmaster128]

What error do you get with Rust 1.69.0? Are you sure you did not check an old artifact? Ideally remove the target folder to double check.