Unhelpful error message: “No such file or directory”

cargo-cache has previously worked without any problems; now it doesn't:

$ cargo-cache trim --limit '1M'

thread 'main' panicked at src/commands/trim.rs:34:57:
called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
$ env RUST_BACKTRACE=1 cargo-cache trim --limit '1M'

thread 'main' panicked at src/commands/trim.rs:34:57:
called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
stack backtrace:
   0:     0x558dcc8f25a2 - <unknown>
   1:     0x558dcc8720d3 - <unknown>
   2:     0x558dcc8f220f - <unknown>
   3:     0x558dcc8f2403 - <unknown>
   4:     0x558dcc8f1eee - <unknown>
   5:     0x558dcc9277c8 - <unknown>
   6:     0x558dcc927729 - <unknown>
   7:     0x558dcc92866c - <unknown>
   8:     0x558dcc76128f - <unknown>
   9:     0x558dcc761795 - <unknown>
  10:     0x558dcc7db6b6 - <unknown>
  11:     0x558dcc7c219e - <unknown>
  12:     0x558dcc779636 - <unknown>
  13:     0x558dcc7ef033 - <unknown>
  14:     0x7fbecac27675 - <unknown>
  15:     0x7fbecac27729 - __libc_start_main
  16:     0x558dcc767315 - <unknown>
  17:                0x0 - <unknown>

It would be helpful if cargo-cache told me which file it expected to find, but didn't.

I am using cargo-cache packaged by ArchLinux:

• https://archlinux.org/packages/extra/x86_64/cargo-cache/

Rebuilding the package locally doesn't change a thing.

• cargo-cache: 0.8.3 (3d8d5ce 2025-07-26)
• O/S: Linux x86_64
• rustc: 1.88.0

Start in src/commands/trim.rs at the unwrap reported on line 34 and reproduce the failure with cargo-cache trim --limit '1M'. Trace which file operation returns the error. Done means the failure identifies the expected file instead of only reporting “No such file or directory”.