panic location counts tabs as four columns instead of one

I tried this code (note that indentation is in tabs, not spaces):

fn main() {
	panic!();
}

I expected to see this happen:

thread 'main' panicked at src/main.rs:2:2:
explicit panic

Instead, this happened:

thread 'main' panicked at src/main.rs:2:5:
explicit panic

Meta

rustc --version --verbose:

rustc 1.90.0 (1159e78c4 2025-09-14)
binary: rustc
commit-hash: 1159e78c4747b02ef996e55082b704c09b970588
commit-date: 2025-09-14
host: x86_64-unknown-linux-gnu
release: 1.90.0
LLVM version: 20.1.8

<backtrace>

Start by reproducing the snippet in src/main.rs with the reported rustc version and compare the panic location for tab indentation. Trace the compiler's panic location reporting to determine where the column is calculated; done means the example reports src/main.rs:2:2 rather than src/main.rs:2:5.