macOS 10.15 install failed

[monsterLin]

Indicate troubleshooting steps taken

• Ran brew update and retried your prior step?
• Ran brew doctor, fixed as many issues as possible and retried your prior step?
• Checked that a similar issue hasn't already been filed?
• Looked up the software bug tracker if reporting a build error?
• If you're seeing permission errors tried running sudo chown -R $(whoami) $(brew --prefix)?

Bug reports / build errors:

run brew install nginx-full --with-rtmp-module

Warning: You are using macOS 10.15.
We do not provide support for this pre-release version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Discourse, Twitter or IRC. You are responsible for resolving any issues you
experience, as you are running this pre-release version.

Brief summary of issue:

The complete command that you issued:

Gist with output of brew doctor:

Link output by brew gist-logs <formula>:

Output of brew config:

Formula Requests:

The quickest way to get a new formula into Homebrew is to file a Pull Request.

We will consider your request but it may be closed if it's something we're not actively planning to work on.

[denji]

You haven't described the details of the problem.
Have you installed XCode & Command Line Tools?