To reproduce:
1. Open attached project;
2. Make sure custom texture (you can use the texture added in the project (icon.png) or import another texture) is set as Default Icon (Edit > Project Settings > Player);
3. Attempt to build the project on Windows;
-the project crashes here
4. Reopen the project;
5. Unset Default Icon or set any Built-in Texture 2D (for example "Default-Checker");
6. Build the project.

Expected result: the editor doesn't crash on build.
Actual result: Windows editor crashes on build with an empty stacktrace.

Reproduced with: 2020.1.0a4, 2020.1.0a5, 2020.1.0a6.
Not reproduced with: 2020.1.0a2, 2020.1.0a3.

Platforms:
Mac - doesn't reproduce
Windows - reproduces