看了一下，似乎https://dl.bintray.com这个网站直接502了
不知道有没有替代方案
报错信息如下：
Could not determine the dependencies of task ':compileKotlin'.
> Could not resolve all files for configuration ':kotlinCompilerClasspath'.
> Could not resolve org.jetbrains.kotlin:kotlin-compiler-embeddable:1.4.30.
Required by:
project :
> Could not resolve org.jetbrains.kotlin:kotlin-compiler-embeddable:1.4.30.
> Could not get resource 'https://dl.bintray.com/him188moe/mirai/org/jetbrains/kotlin/kotlin-compiler-embeddable/1.4.30/kotlin-compiler-embeddable-1.4.30.pom'.
> Could not HEAD 'https://dl.bintray.com/him188moe/mirai/org/jetbrains/kotlin/kotlin-compiler-embeddable/1.4.30/kotlin-compiler-embeddable-1.4.30.pom'. Received status code 502 from server: Bad Gateway
