Test failure on `main` branch

[CohenArthur]

error: output of --print=split-debuginfo missing when learning about target-specific information from rustc
command was: `gccrs-driver rustc - --crate-name ___ --print=file-names --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=split-debuginfo --print=crate-name --print=cfg`

--- stdout
___
lib___.rlib
lib___.so
lib___.so
lib___.a
lib___.so
target_arch="x86_64"target_endian="little"target_env="gnu"target_family="unix"target_feature="fxsr"target_feature="mmx"target_feature="sse"target_feature="sse2"target_os="linux"target_pointer_width="64"target_vendor="unknown"

--- stderr
/usr/bin/ld: /lib/../lib64/crt1.o: in function `_start':
(.text+0x1b): undefined reference to `main'
collect2: error: ld returned 1 exit status

Error: `cargo-gccrs` did not complete succesfully

Reported by @Skallwar

[CohenArthur]

This is due to us trying to dump a configuration without passing an actual program - for some reason, gccrs does not like that, even though it was no problem before