thread main panicked at called Option::unwrap() ... github.com-1ecc6299db9ec823/tree_magic_mini-3.0.3

[spital]

Thanks for reporting a bug! Please include all of the following:

(1) A description of the issue. A screenshot is often helpful too.

thread 'main' panicked at 'called Option::unwrap() on a None value', ..../.cargo/registry/src/github.com-1ecc6299db9ec823/tree_magic_mini-3.0.3/src/fdo_magic/builtin/init.rs:26:34
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

or

'files::tests::test_null_bytes_are_binary' panicked at 'called Option::unwrap() on a None value', ..../.cargo/registry/src/github.com-1ecc6299db9ec823/tree_magic_mini-3.0.3/src/fdo_magic/builtin/init.rs:26:34

(2) A copy of what you're diffing. If you're diffing files, include
the before and after files. If you're using difftastic with a VCS
repository (e.g. git), include the URL and commit hash.

anything, even same files

(3) The version of difftastic you're using (see difft --version) and
your operating system.

0.35 local build or master local build or downloaded and unpacked latest v0.36.1

No idea what might be the problem, rustc 1.63.0 (Fedora 1.63.0-1.fc35)

cargo generate-lockfile; cargo clean; cargo test
# test files::tests::test_null_bytes_are_binary ... FAILED and next 2 as well

Workaround: tree_magic_mini = "2.0.0" in Cargo.toml (not 3.0.0, 3.0.1, 3.0.2, 3.0.3)

[Wilfred]

Sounds like mbrubeck/tree_magic#12 where it's crashing on blank lines in the local MIME database.

[mbrubeck]

Sorry for the delay; this bug is now fixed upstream in tree_magic_mini 3.1.2.

[Wilfred]

@mbrubeck thank you :)

[Wilfred]

@mbrubeck FWIW tree_magic_mini 3.1.3 doesn't compile, at least on rust 1.65:

error[E0446]: private type `MagicRule<'_>` in public interface
   --> /home/wilfred/.cargo/registry/src/github.com-1ecc6299db9ec823/tree_magic_mini-3.1.3/src/fdo_magic/ruleset.rs:113:1
    |
113 | / pub fn from_multiple(
114 | |     files: &[Vec<u8>],
115 | | ) -> Result<FnvHashMap<&str, DiGraph<MagicRule<'_>, u32>>, String> {
    | |__________________________________________________________________^ can't leak private type
    |
   ::: /home/wilfred/.cargo/registry/src/github.com-1ecc6299db9ec823/tree_magic_mini-3.1.3/src/fdo_magic/mod.rs:6:1
    |
6   |   struct MagicRule<'a> {
    |   -------------------- `MagicRule<'_>` declared as private

[mbrubeck]

FWIW tree_magic_mini 3.1.3 doesn't compile, at least on rust 1.65

Oops, it looks like I accidentally depended on rust-lang/rust#113126 which requires Rust 1.74 or newer. Fixed in tree_magic_mini 3.1.4.