Compiler Panic when linking object file that doesn't exist in zig build

[Noodlez1232]

Zig Version

0.10.0-dev.3597+79757f233

Steps to Reproduce

• Link to an object file that doesn't exist using target.addObjectFile("file.o")
• Observe the error

Expected Behavior

Some sort of better error than a panic

Actual Behavior

A panic due to unwrapping an error. The error message is as follows:

warning: FileNotFound: file.o
thread 263245 panic: attempt to unwrap error: FileNotFound

This error happens in stage1.zig:48:43 where stage2 is called. Stage1 expects no error to be thrown, so catch unreachable is used.

[Noodlez1232]

It is worth noting that this is using a stage3 self-hosted compiler.