无法构建智能契约-编译erdpy构建契约的elrond-wasm时出错

Question

当我尝试从这里构建乒乓智能契约时，我使用：

erdpy build contract

我没有得到以下预期输出：

INFO:projects.core:WASM file generated: output/ping-pong.wasm

由于sc_results.rs文件中出现以下错误：

Compiling elrond-codec v0.5.3
Compiling elrond-wasm v0.18.2
error[E0432]: unresolved import `core::ops::FromResidual`
--> /Users/<username>/elrondsdk/vendor-rust/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/types/io/sc_result.rs:7:30
...
error[E0437]: type Output is not a member of trait `Try`
--> /Users/<username>/elrondsdk/vendor-rust/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/types/io/sc_result.rs:62:5
...
error[E0437]: type Residual is not a member of trait `Try`
--> /Users/<username>/elrondsdk/vendor-rust/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/types/io/sc_result.rs:63:5
...
error[E0407]: method branch is not a member of trait `Try`
--> /Users/<username>/elrondsdk/vendor-rust/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/types/io/sc_result.rs:65:5
...
error[E0407]: method from_output is not a member of trait `Try`
--> /Users/<username>/elrondsdk/vendor-rust/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/types/io/sc_result.rs:71:5
...
error aborting due to 5 previous errors
...
CRITICAL:cli:Build error: error code = 101, see output.

环境：

• elrond-wasm - v0.18.2
• erdpy - v1.0.19

如何解决这个构建问题？

Answer 1

问题是，今年早些时候，Rust发生了一个不向后兼容的变化。因此，与旧版本有不兼容之处，但对于较新版本来说，效果很好。

使用以下方法更新锈蚀：

rustup update

解决了问题。

现在：

rustc --version | grep -o '^[^(]*'

版画

rustc 1.57.0-nightly