我的构建失败了。
一切看起来都很好，直到我用命令测试了我的合同：
cargo +nightly test
我收到错误 [E0282]
以下是整个错误报告：
error[E0282]: type annotations needed
--> /home/mal/.cargo/registry/src/github.com-1ecc6299db9ec823/sp-arithmetic-2.0.0/src/fixed_point.rs:541:9
|
541 | let accuracy = P::ACCURACY.saturated_into();
| ^^^^^^^^ consider giving `accuracy` a type
...
1595 | / implement_fixed!(
1596 | | FixedI64,
1597 | | test_fixed_i64,
1598 | | i64,
... |
1601 | | "_Fixed Point 64 bits signed, range = [-9223372036.854775808, 9223372036.854775807]_",
1602 | | );
| |__- in this macro invocation
|
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0282]: type annotations needed
--> /home/mal/.cargo/registry/src/github.com-1ecc6299db9ec823/sp-arithmetic-2.0.0/src/fixed_point.rs:541:9
|
541 | let accuracy = P::ACCURACY.saturated_into();
| ^^^^^^^^ consider giving `accuracy` a type
...
1604 | / implement_fixed!(
1605 | | FixedI128,
1606 | | test_fixed_i128,
1607 | | i128,
... |
1611 | | [-170141183460469231731.687303715884105728, 170141183460469231731.687303715884105727]_",
1612 | | );
| |__- in this macro invocation
|
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0282]: type annotations needed
--> /home/mal/.cargo/registry/src/github.com-1ecc6299db9ec823/sp-arithmetic-2.0.0/src/fixed_point.rs:541:9
|
541 | let accuracy = P::ACCURACY.saturated_into();
| ^^^^^^^^ consider giving `accuracy` a type
...
1614 | / implement_fixed!(
1615 | | FixedU128,
1616 | | test_fixed_u128,
1617 | | u128,
... |
1621 | | [0.000000000000000000, 340282366920938463463.374607431768211455]_",
1622 | | );
| |__- in this macro invocation
|
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0282`.
error: could not compile `sp-arithmetic`
这是更广泛教程的一部分。
我相信锈蚀是更新的。
问题似乎是宏 sp-aritmetic，但我不确定如何给它一个"类型"。我的锈迹不存在...
真的很想进入墨水！所以任何帮助都是值得赞赏的。
该错误的原因是从版本 2020-10-06 开始的 rust 夜间编译器中的回归。您需要rustup toolchain install 2020-10-05并使用该运行时来构建运行时，直到此问题得到解决。通常，最新的每晚会自动用于构建运行时。您可以通过设置WASM_BUILD_TOOLCHAIN环境变量来覆盖此行为。在这种情况下：
export WASM_BUILD_TOOLCHAIN='nightly-2020-10-05'
在与货物合同签订合同的情况下，您应该使用：
cargo +nightly-2020-10-05 contract build