Confusion between features of multiple major versions

[kpreid]

Describe the bug
When the manifest dependencies contains multiple major versions with different feature sets, krates 0.16.1 produces an internal error.

thread 'test' panicked at /Users/kpreid/.cargo/registry/src/index.crates.io-6f17d22bba15001f/krates-0.16.1/src/builder.rs:715:25:
internal error: entered unreachable code: unable to locate js for crate getrandom 0.1.16 (registry+https://github.com/rust-lang/crates.io-index) features(["bindgen", "js-sys", "wasm-bindgen"])
stack backtrace:
   0: rust_begin_unwind
             at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
   1: core::panicking::panic_fmt
             at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
   2: krates::builder::Builder::build_with_metadata::Node::feature_index
             at /Users/kpreid/.cargo/registry/src/index.crates.io-6f17d22bba15001f/krates-0.16.1/src/builder.rs:715:25
   3: krates::builder::Builder::build_with_metadata
             at /Users/kpreid/.cargo/registry/src/index.crates.io-6f17d22bba15001f/krates-0.16.1/src/builder.rs:1250:46
   4: krates::builder::Builder::build
             at /Users/kpreid/.cargo/registry/src/index.crates.io-6f17d22bba15001f/krates-0.16.1/src/builder.rs:572:9
   5: krates_test_case::test
             at ./src/lib.rs:7:34
   6: krates_test_case::test::{{closure}}
             at ./src/lib.rs:2:10
   7: core::ops::function::FnOnce::call_once
             at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
   8: core::ops::function::FnOnce::call_once
             at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

To Reproduce
Cargo.toml:

[package]
name = "krates-test-case"
edition = "2021"

[dependencies]
krates = "0.16.1"
# does not have a feature called wasm-bindgen
getrandom = { version = "0.2.7", features = ["js"] }
# does not have a feature called js
getrandom_old = { package = "getrandom", version = "0.1.16", features = ["wasm-bindgen"] }

Rust code (reduced from cargo_about::get_all_crates):

#[test]
fn test() {
    let mut mdc = krates::Cmd::new();
    mdc.manifest_path(<&krates::Utf8Path>::from("./Cargo.toml"));
    let mut builder = krates::Builder::new();
    builder.include_targets([("wasm32-unknown-unknown", vec![])]);
    let _graph: krates::Krates = builder.build(mdc, |_| {}).unwrap();
}

Additional context
I encountered this problem while attempting to make cargo-about use krates 0.16 to get the fix for #64. However, the bug also exists in krates@0.15.3 but not krates@0.15.1 — but this may be just because the panic was only introduced by #63.