feat: migrate from Cedar to SpiceDB authorization system

This is a major architectural change that replaces the Cedar policy-based
authorization system with SpiceDB's relation-based authorization.

Key changes:

- Migrate from Rust to Go implementation
- Replace Cedar policies with SpiceDB schema and relationships
- Switch from envoy `ext_authz` with Cedar to SpiceDB permission checks
- Update build system and dependencies for Go ecosystem
- Maintain Envoy integration for external authorization

This change enables more flexible permission modeling through SpiceDB's
Google Zanzibar inspired relation-based system, supporting complex
hierarchical permissions that were difficult to express in Cedar.

Breaking change: Existing Cedar policies and Rust-based configuration
will no longer work and need to be migrated to SpiceDB schema.

4 files changed, 0 insertions, 859 deletions

diff --git a/vendor/indexmap/tests/equivalent_trait.rs b/vendor/indexmap/tests/equivalent_trait.rs
deleted file mode 100644
index ff5943a3..00000000
--- a/vendor/indexmap/tests/equivalent_trait.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-use indexmap::indexmap;
-use indexmap::Equivalent;
-
-use std::hash::Hash;
-
-#[derive(Debug, Hash)]
-pub struct Pair<A, B>(pub A, pub B);
-
-impl<A, B, C, D> PartialEq<(A, B)> for Pair<C, D>
-where
-    C: PartialEq<A>,
-    D: PartialEq<B>,
-{
-    fn eq(&self, rhs: &(A, B)) -> bool {
-        self.0 == rhs.0 && self.1 == rhs.1
-    }
-}
-
-impl<A, B, X> Equivalent<X> for Pair<A, B>
-where
-    Pair<A, B>: PartialEq<X>,
-    A: Hash + Eq,
-    B: Hash + Eq,
-{
-    fn equivalent(&self, other: &X) -> bool {
-        *self == *other
-    }
-}
-
-#[test]
-fn test_lookup() {
-    let s = String::from;
-    let map = indexmap! {
-        (s("a"), s("b")) => 1,
-        (s("a"), s("x")) => 2,
-    };
-
-    assert!(map.contains_key(&Pair("a", "b")));
-    assert!(!map.contains_key(&Pair("b", "a")));
-}
-
-#[test]
-fn test_string_str() {
-    let s = String::from;
-    let mut map = indexmap! {
-        s("a") => 1, s("b") => 2,
-        s("x") => 3, s("y") => 4,
-    };
-
-    assert!(map.contains_key("a"));
-    assert!(!map.contains_key("z"));
-    assert_eq!(map.swap_remove("b"), Some(2));
-}
diff --git a/vendor/indexmap/tests/macros_full_path.rs b/vendor/indexmap/tests/macros_full_path.rs
deleted file mode 100644
index 2467d9b4..00000000
--- a/vendor/indexmap/tests/macros_full_path.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-#[test]
-fn test_create_map() {
-    let _m = indexmap::indexmap! {
-        1 => 2,
-        7 => 1,
-        2 => 2,
-        3 => 3,
-    };
-}
-
-#[test]
-fn test_create_set() {
-    let _s = indexmap::indexset! {
-        1,
-        7,
-        2,
-        3,
-    };
-}
diff --git a/vendor/indexmap/tests/quick.rs b/vendor/indexmap/tests/quick.rs
deleted file mode 100644
index 56afee72..00000000
--- a/vendor/indexmap/tests/quick.rs
+++ /dev/null
@@ -1,759 +0,0 @@
-use indexmap::{IndexMap, IndexSet};
-use itertools::Itertools;
-
-use quickcheck::Arbitrary;
-use quickcheck::Gen;
-use quickcheck::QuickCheck;
-use quickcheck::TestResult;
-
-use fnv::FnvHasher;
-use std::hash::{BuildHasher, BuildHasherDefault};
-type FnvBuilder = BuildHasherDefault<FnvHasher>;
-type IndexMapFnv<K, V> = IndexMap<K, V, FnvBuilder>;
-
-use std::cmp::min;
-use std::collections::HashMap;
-use std::collections::HashSet;
-use std::fmt::Debug;
-use std::hash::Hash;
-use std::ops::Bound;
-use std::ops::Deref;
-
-use indexmap::map::Entry;
-use std::collections::hash_map::Entry as StdEntry;
-
-fn set<'a, T: 'a, I>(iter: I) -> HashSet<T>
-where
-    I: IntoIterator<Item = &'a T>,
-    T: Copy + Hash + Eq,
-{
-    iter.into_iter().copied().collect()
-}
-
-fn indexmap<'a, T: 'a, I>(iter: I) -> IndexMap<T, ()>
-where
-    I: IntoIterator<Item = &'a T>,
-    T: Copy + Hash + Eq,
-{
-    IndexMap::from_iter(iter.into_iter().copied().map(|k| (k, ())))
-}
-
-// Helper macro to allow us to use smaller quickcheck limits under miri.
-macro_rules! quickcheck_limit {
-    (@as_items $($i:item)*) => ($($i)*);
-    {
-        $(
-            $(#[$m:meta])*
-            fn $fn_name:ident($($arg_name:ident : $arg_ty:ty),*) -> $ret:ty {
-                $($code:tt)*
-            }
-        )*
-    } => (
-        quickcheck::quickcheck! {
-            @as_items
-            $(
-                #[test]
-                $(#[$m])*
-                fn $fn_name() {
-                    fn prop($($arg_name: $arg_ty),*) -> $ret {
-                        $($code)*
-                    }
-                    let mut quickcheck = QuickCheck::new();
-                    if cfg!(miri) {
-                        quickcheck = quickcheck
-                            .gen(Gen::new(10))
-                            .tests(10)
-                            .max_tests(100);
-                    }
-
-                    quickcheck.quickcheck(prop as fn($($arg_ty),*) -> $ret);
-                }
-            )*
-        }
-    )
-}
-
-quickcheck_limit! {
-    fn contains(insert: Vec<u32>) -> bool {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-        insert.iter().all(|&key| map.get(&key).is_some())
-    }
-
-    fn contains_not(insert: Vec<u8>, not: Vec<u8>) -> bool {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-        let nots = &set(&not) - &set(&insert);
-        nots.iter().all(|&key| map.get(&key).is_none())
-    }
-
-    fn insert_remove(insert: Vec<u8>, remove: Vec<u8>) -> bool {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-        for &key in &remove {
-            map.swap_remove(&key);
-        }
-        let elements = &set(&insert) - &set(&remove);
-        map.len() == elements.len() && map.iter().count() == elements.len() &&
-            elements.iter().all(|k| map.get(k).is_some())
-    }
-
-    fn insertion_order(insert: Vec<u32>) -> bool {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-        itertools::assert_equal(insert.iter().unique(), map.keys());
-        true
-    }
-
-    fn insert_sorted(insert: Vec<(u32, u32)>) -> bool {
-        let mut hmap = HashMap::new();
-        let mut map = IndexMap::new();
-        let mut map2 = IndexMap::new();
-        for &(key, value) in &insert {
-            hmap.insert(key, value);
-            map.insert_sorted(key, value);
-            match map2.entry(key) {
-                Entry::Occupied(e) => *e.into_mut() = value,
-                Entry::Vacant(e) => { e.insert_sorted(value); }
-            }
-        }
-        itertools::assert_equal(hmap.iter().sorted(), &map);
-        itertools::assert_equal(&map, &map2);
-        true
-    }
-
-    fn pop(insert: Vec<u8>) -> bool {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-        let mut pops = Vec::new();
-        while let Some((key, _v)) = map.pop() {
-            pops.push(key);
-        }
-        pops.reverse();
-
-        itertools::assert_equal(insert.iter().unique(), &pops);
-        true
-    }
-
-    fn with_cap(template: Vec<()>) -> bool {
-        let cap = template.len();
-        let map: IndexMap<u8, u8> = IndexMap::with_capacity(cap);
-        println!("wish: {}, got: {} (diff: {})", cap, map.capacity(), map.capacity() as isize - cap as isize);
-        map.capacity() >= cap
-    }
-
-    fn drain_full(insert: Vec<u8>) -> bool {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-        let mut clone = map.clone();
-        let drained = clone.drain(..);
-        for (key, _) in drained {
-            map.swap_remove(&key);
-        }
-        map.is_empty()
-    }
-
-    fn drain_bounds(insert: Vec<u8>, range: (Bound<usize>, Bound<usize>)) -> TestResult {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-
-        // First see if `Vec::drain` is happy with this range.
-        let result = std::panic::catch_unwind(|| {
-            let mut keys: Vec<u8> = map.keys().copied().collect();
-            keys.drain(range);
-            keys
-        });
-
-        if let Ok(keys) = result {
-            map.drain(range);
-            // Check that our `drain` matches the same key order.
-            assert!(map.keys().eq(&keys));
-            // Check that hash lookups all work too.
-            assert!(keys.iter().all(|key| map.contains_key(key)));
-            TestResult::passed()
-        } else {
-            // If `Vec::drain` panicked, so should we.
-            TestResult::must_fail(move || { map.drain(range); })
-        }
-    }
-
-    fn shift_remove(insert: Vec<u8>, remove: Vec<u8>) -> bool {
-        let mut map = IndexMap::new();
-        for &key in &insert {
-            map.insert(key, ());
-        }
-        for &key in &remove {
-            map.shift_remove(&key);
-        }
-        let elements = &set(&insert) - &set(&remove);
-
-        // Check that order is preserved after removals
-        let mut iter = map.keys();
-        for &key in insert.iter().unique() {
-            if elements.contains(&key) {
-                assert_eq!(Some(&key), iter.next());
-            }
-        }
-
-        map.len() == elements.len() && map.iter().count() == elements.len() &&
-            elements.iter().all(|k| map.get(k).is_some())
-    }
-
-    fn indexing(insert: Vec<u8>) -> bool {
-        let mut map: IndexMap<_, _> = insert.into_iter().map(|x| (x, x)).collect();
-        let set: IndexSet<_> = map.keys().copied().collect();
-        assert_eq!(map.len(), set.len());
-
-        for (i, &key) in set.iter().enumerate() {
-            assert_eq!(map.get_index(i), Some((&key, &key)));
-            assert_eq!(set.get_index(i), Some(&key));
-            assert_eq!(map[i], key);
-            assert_eq!(set[i], key);
-
-            *map.get_index_mut(i).unwrap().1 >>= 1;
-            map[i] <<= 1;
-        }
-
-        set.iter().enumerate().all(|(i, &key)| {
-            let value = key & !1;
-            map[&key] == value && map[i] == value
-        })
-    }
-
-    // Use `u8` test indices so quickcheck is less likely to go out of bounds.
-    fn set_swap_indices(vec: Vec<u8>, a: u8, b: u8) -> TestResult {
-        let mut set = IndexSet::<u8>::from_iter(vec);
-        let a = usize::from(a);
-        let b = usize::from(b);
-
-        if a >= set.len() || b >= set.len() {
-            return TestResult::discard();
-        }
-
-        let mut vec = Vec::from_iter(set.iter().cloned());
-        vec.swap(a, b);
-
-        set.swap_indices(a, b);
-
-        // Check both iteration order and hash lookups
-        assert!(set.iter().eq(vec.iter()));
-        assert!(vec.iter().enumerate().all(|(i, x)| {
-            set.get_index_of(x) == Some(i)
-        }));
-        TestResult::passed()
-    }
-
-    fn map_swap_indices(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        test_map_swap_indices(vec, from, to, IndexMap::swap_indices)
-    }
-
-    fn occupied_entry_swap_indices(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        test_map_swap_indices(vec, from, to, |map, from, to| {
-            let key = map.keys()[from];
-            match map.entry(key) {
-                Entry::Occupied(entry) => entry.swap_indices(to),
-                _ => unreachable!(),
-            }
-        })
-    }
-
-    fn indexed_entry_swap_indices(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        test_map_swap_indices(vec, from, to, |map, from, to| {
-            map.get_index_entry(from).unwrap().swap_indices(to);
-        })
-    }
-
-    fn raw_occupied_entry_swap_indices(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        use indexmap::map::raw_entry_v1::{RawEntryApiV1, RawEntryMut};
-        test_map_swap_indices(vec, from, to, |map, from, to| {
-            let key = map.keys()[from];
-            match map.raw_entry_mut_v1().from_key(&key) {
-                RawEntryMut::Occupied(entry) => entry.swap_indices(to),
-                _ => unreachable!(),
-            }
-        })
-    }
-
-    // Use `u8` test indices so quickcheck is less likely to go out of bounds.
-    fn set_move_index(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        let mut set = IndexSet::<u8>::from_iter(vec);
-        let from = usize::from(from);
-        let to = usize::from(to);
-
-        if from >= set.len() || to >= set.len() {
-            return TestResult::discard();
-        }
-
-        let mut vec = Vec::from_iter(set.iter().cloned());
-        let x = vec.remove(from);
-        vec.insert(to, x);
-
-        set.move_index(from, to);
-
-        // Check both iteration order and hash lookups
-        assert!(set.iter().eq(vec.iter()));
-        assert!(vec.iter().enumerate().all(|(i, x)| {
-            set.get_index_of(x) == Some(i)
-        }));
-        TestResult::passed()
-    }
-
-    fn map_move_index(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        test_map_move_index(vec, from, to, IndexMap::move_index)
-    }
-
-    fn occupied_entry_move_index(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        test_map_move_index(vec, from, to, |map, from, to| {
-            let key = map.keys()[from];
-            match map.entry(key) {
-                Entry::Occupied(entry) => entry.move_index(to),
-                _ => unreachable!(),
-            }
-        })
-    }
-
-    fn indexed_entry_move_index(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        test_map_move_index(vec, from, to, |map, from, to| {
-            map.get_index_entry(from).unwrap().move_index(to);
-        })
-    }
-
-    fn raw_occupied_entry_move_index(vec: Vec<u8>, from: u8, to: u8) -> TestResult {
-        use indexmap::map::raw_entry_v1::{RawEntryApiV1, RawEntryMut};
-        test_map_move_index(vec, from, to, |map, from, to| {
-            let key = map.keys()[from];
-            match map.raw_entry_mut_v1().from_key(&key) {
-                RawEntryMut::Occupied(entry) => entry.move_index(to),
-                _ => unreachable!(),
-            }
-        })
-    }
-
-    fn occupied_entry_shift_insert(vec: Vec<u8>, i: u8) -> TestResult {
-        test_map_shift_insert(vec, i, |map, i, key| {
-            match map.entry(key) {
-                Entry::Vacant(entry) => entry.shift_insert(i, ()),
-                _ => unreachable!(),
-            };
-        })
-    }
-
-    fn raw_occupied_entry_shift_insert(vec: Vec<u8>, i: u8) -> TestResult {
-        use indexmap::map::raw_entry_v1::{RawEntryApiV1, RawEntryMut};
-        test_map_shift_insert(vec, i, |map, i, key| {
-            match map.raw_entry_mut_v1().from_key(&key) {
-                RawEntryMut::Vacant(entry) => entry.shift_insert(i, key, ()),
-                _ => unreachable!(),
-            };
-        })
-    }
-}
-
-fn test_map_swap_indices<F>(vec: Vec<u8>, a: u8, b: u8, swap_indices: F) -> TestResult
-where
-    F: FnOnce(&mut IndexMap<u8, ()>, usize, usize),
-{
-    let mut map = IndexMap::<u8, ()>::from_iter(vec.into_iter().map(|k| (k, ())));
-    let a = usize::from(a);
-    let b = usize::from(b);
-
-    if a >= map.len() || b >= map.len() {
-        return TestResult::discard();
-    }
-
-    let mut vec = Vec::from_iter(map.keys().copied());
-    vec.swap(a, b);
-
-    swap_indices(&mut map, a, b);
-
-    // Check both iteration order and hash lookups
-    assert!(map.keys().eq(vec.iter()));
-    assert!(vec
-        .iter()
-        .enumerate()
-        .all(|(i, x)| { map.get_index_of(x) == Some(i) }));
-    TestResult::passed()
-}
-
-fn test_map_move_index<F>(vec: Vec<u8>, from: u8, to: u8, move_index: F) -> TestResult
-where
-    F: FnOnce(&mut IndexMap<u8, ()>, usize, usize),
-{
-    let mut map = IndexMap::<u8, ()>::from_iter(vec.into_iter().map(|k| (k, ())));
-    let from = usize::from(from);
-    let to = usize::from(to);
-
-    if from >= map.len() || to >= map.len() {
-        return TestResult::discard();
-    }
-
-    let mut vec = Vec::from_iter(map.keys().copied());
-    let x = vec.remove(from);
-    vec.insert(to, x);
-
-    move_index(&mut map, from, to);
-
-    // Check both iteration order and hash lookups
-    assert!(map.keys().eq(vec.iter()));
-    assert!(vec
-        .iter()
-        .enumerate()
-        .all(|(i, x)| { map.get_index_of(x) == Some(i) }));
-    TestResult::passed()
-}
-
-fn test_map_shift_insert<F>(vec: Vec<u8>, i: u8, shift_insert: F) -> TestResult
-where
-    F: FnOnce(&mut IndexMap<u8, ()>, usize, u8),
-{
-    let mut map = IndexMap::<u8, ()>::from_iter(vec.into_iter().map(|k| (k, ())));
-    let i = usize::from(i);
-    if i >= map.len() {
-        return TestResult::discard();
-    }
-
-    let mut vec = Vec::from_iter(map.keys().copied());
-    let x = vec.pop().unwrap();
-    vec.insert(i, x);
-
-    let (last, ()) = map.pop().unwrap();
-    assert_eq!(x, last);
-    map.shrink_to_fit(); // so we might have to grow and rehash the table
-
-    shift_insert(&mut map, i, last);
-
-    // Check both iteration order and hash lookups
-    assert!(map.keys().eq(vec.iter()));
-    assert!(vec
-        .iter()
-        .enumerate()
-        .all(|(i, x)| { map.get_index_of(x) == Some(i) }));
-    TestResult::passed()
-}
-
-use crate::Op::*;
-#[derive(Copy, Clone, Debug)]
-enum Op<K, V> {
-    Add(K, V),
-    Remove(K),
-    AddEntry(K, V),
-    RemoveEntry(K),
-}
-
-impl<K, V> Arbitrary for Op<K, V>
-where
-    K: Arbitrary,
-    V: Arbitrary,
-{
-    fn arbitrary(g: &mut Gen) -> Self {
-        match u32::arbitrary(g) % 4 {
-            0 => Add(K::arbitrary(g), V::arbitrary(g)),
-            1 => AddEntry(K::arbitrary(g), V::arbitrary(g)),
-            2 => Remove(K::arbitrary(g)),
-            _ => RemoveEntry(K::arbitrary(g)),
-        }
-    }
-}
-
-fn do_ops<K, V, S>(ops: &[Op<K, V>], a: &mut IndexMap<K, V, S>, b: &mut HashMap<K, V>)
-where
-    K: Hash + Eq + Clone,
-    V: Clone,
-    S: BuildHasher,
-{
-    for op in ops {
-        match *op {
-            Add(ref k, ref v) => {
-                a.insert(k.clone(), v.clone());
-                b.insert(k.clone(), v.clone());
-            }
-            AddEntry(ref k, ref v) => {
-                a.entry(k.clone()).or_insert_with(|| v.clone());
-                b.entry(k.clone()).or_insert_with(|| v.clone());
-            }
-            Remove(ref k) => {
-                a.swap_remove(k);
-                b.remove(k);
-            }
-            RemoveEntry(ref k) => {
-                if let Entry::Occupied(ent) = a.entry(k.clone()) {
-                    ent.swap_remove_entry();
-                }
-                if let StdEntry::Occupied(ent) = b.entry(k.clone()) {
-                    ent.remove_entry();
-                }
-            }
-        }
-        //println!("{:?}", a);
-    }
-}
-
-fn assert_maps_equivalent<K, V>(a: &IndexMap<K, V>, b: &HashMap<K, V>) -> bool
-where
-    K: Hash + Eq + Debug,
-    V: Eq + Debug,
-{
-    assert_eq!(a.len(), b.len());
-    assert_eq!(a.iter().next().is_some(), b.iter().next().is_some());
-    for key in a.keys() {
-        assert!(b.contains_key(key), "b does not contain {:?}", key);
-    }
-    for key in b.keys() {
-        assert!(a.get(key).is_some(), "a does not contain {:?}", key);
-    }
-    for key in a.keys() {
-        assert_eq!(a[key], b[key]);
-    }
-    true
-}
-
-quickcheck_limit! {
-    fn operations_i8(ops: Large<Vec<Op<i8, i8>>>) -> bool {
-        let mut map = IndexMap::new();
-        let mut reference = HashMap::new();
-        do_ops(&ops, &mut map, &mut reference);
-        assert_maps_equivalent(&map, &reference)
-    }
-
-    fn operations_string(ops: Vec<Op<Alpha, i8>>) -> bool {
-        let mut map = IndexMap::new();
-        let mut reference = HashMap::new();
-        do_ops(&ops, &mut map, &mut reference);
-        assert_maps_equivalent(&map, &reference)
-    }
-
-    fn keys_values(ops: Large<Vec<Op<i8, i8>>>) -> bool {
-        let mut map = IndexMap::new();
-        let mut reference = HashMap::new();
-        do_ops(&ops, &mut map, &mut reference);
-        let mut visit = IndexMap::new();
-        for (k, v) in map.keys().zip(map.values()) {
-            assert_eq!(&map[k], v);
-            assert!(!visit.contains_key(k));
-            visit.insert(*k, *v);
-        }
-        assert_eq!(visit.len(), reference.len());
-        true
-    }
-
-    fn keys_values_mut(ops: Large<Vec<Op<i8, i8>>>) -> bool {
-        let mut map = IndexMap::new();
-        let mut reference = HashMap::new();
-        do_ops(&ops, &mut map, &mut reference);
-        let mut visit = IndexMap::new();
-        let keys = Vec::from_iter(map.keys().copied());
-        for (k, v) in keys.iter().zip(map.values_mut()) {
-            assert_eq!(&reference[k], v);
-            assert!(!visit.contains_key(k));
-            visit.insert(*k, *v);
-        }
-        assert_eq!(visit.len(), reference.len());
-        true
-    }
-
-    fn equality(ops1: Vec<Op<i8, i8>>, removes: Vec<usize>) -> bool {
-        let mut map = IndexMap::new();
-        let mut reference = HashMap::new();
-        do_ops(&ops1, &mut map, &mut reference);
-        let mut ops2 = ops1.clone();
-        for &r in &removes {
-            if !ops2.is_empty() {
-                let i = r % ops2.len();
-                ops2.remove(i);
-            }
-        }
-        let mut map2 = IndexMapFnv::default();
-        let mut reference2 = HashMap::new();
-        do_ops(&ops2, &mut map2, &mut reference2);
-        assert_eq!(map == map2, reference == reference2);
-        true
-    }
-
-    fn retain_ordered(keys: Large<Vec<i8>>, remove: Large<Vec<i8>>) -> () {
-        let mut map = indexmap(keys.iter());
-        let initial_map = map.clone(); // deduplicated in-order input
-        let remove_map = indexmap(remove.iter());
-        let keys_s = set(keys.iter());
-        let remove_s = set(remove.iter());
-        let answer = &keys_s - &remove_s;
-        map.retain(|k, _| !remove_map.contains_key(k));
-
-        // check the values
-        assert_eq!(map.len(), answer.len());
-        for key in &answer {
-            assert!(map.contains_key(key));
-        }
-        // check the order
-        itertools::assert_equal(map.keys(), initial_map.keys().filter(|&k| !remove_map.contains_key(k)));
-    }
-
-    fn sort_1(keyvals: Large<Vec<(i8, i8)>>) -> () {
-        let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
-        let mut answer = keyvals.0;
-        answer.sort_by_key(|t| t.0);
-
-        // reverse dedup: Because IndexMap::from_iter keeps the last value for
-        // identical keys
-        answer.reverse();
-        answer.dedup_by_key(|t| t.0);
-        answer.reverse();
-
-        map.sort_by(|k1, _, k2, _| Ord::cmp(k1, k2));
-
-        // check it contains all the values it should
-        for &(key, val) in &answer {
-            assert_eq!(map[&key], val);
-        }
-
-        // check the order
-
-        let mapv = Vec::from_iter(map);
-        assert_eq!(answer, mapv);
-
-    }
-
-    fn sort_2(keyvals: Large<Vec<(i8, i8)>>) -> () {
-        let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
-        map.sort_by(|_, v1, _, v2| Ord::cmp(v1, v2));
-        assert_sorted_by_key(map, |t| t.1);
-    }
-
-    fn sort_3(keyvals: Large<Vec<(i8, i8)>>) -> () {
-        let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
-        map.sort_by_cached_key(|&k, _| std::cmp::Reverse(k));
-        assert_sorted_by_key(map, |t| std::cmp::Reverse(t.0));
-    }
-
-    fn reverse(keyvals: Large<Vec<(i8, i8)>>) -> () {
-        let mut map: IndexMap<_, _> = IndexMap::from_iter(keyvals.to_vec());
-
-        fn generate_answer(input: &Vec<(i8, i8)>) -> Vec<(i8, i8)> {
-            // to mimic what `IndexMap::from_iter` does:
-            // need to get (A) the unique keys in forward order, and (B) the
-            // last value of each of those keys.
-
-            // create (A): an iterable that yields the unique keys in ltr order
-            let mut seen_keys = HashSet::new();
-            let unique_keys_forward = input.iter().filter_map(move |(k, _)| {
-                if seen_keys.contains(k) { None }
-                else { seen_keys.insert(*k); Some(*k) }
-            });
-
-            // create (B): a mapping of keys to the last value seen for that key
-            // this is the same as reversing the input and taking the first
-            // value seen for that key!
-            let mut last_val_per_key = HashMap::new();
-            for &(k, v) in input.iter().rev() {
-                if !last_val_per_key.contains_key(&k) {
-                    last_val_per_key.insert(k, v);
-                }
-            }
-
-            // iterate over the keys in (A) in order, and match each one with
-            // the corresponding last value from (B)
-            let mut ans: Vec<_> = unique_keys_forward
-                .map(|k| (k, *last_val_per_key.get(&k).unwrap()))
-                .collect();
-
-            // finally, since this test is testing `.reverse()`, reverse the
-            // answer in-place
-            ans.reverse();
-
-            ans
-        }
-
-        let answer = generate_answer(&keyvals.0);
-
-        // perform the work
-        map.reverse();
-
-        // check it contains all the values it should
-        for &(key, val) in &answer {
-            assert_eq!(map[&key], val);
-        }
-
-        // check the order
-        let mapv = Vec::from_iter(map);
-        assert_eq!(answer, mapv);
-    }
-}
-
-fn assert_sorted_by_key<I, Key, X>(iterable: I, key: Key)
-where
-    I: IntoIterator,
-    I::Item: Ord + Clone + Debug,
-    Key: Fn(&I::Item) -> X,
-    X: Ord,
-{
-    let input = Vec::from_iter(iterable);
-    let mut sorted = input.clone();
-    sorted.sort_by_key(key);
-    assert_eq!(input, sorted);
-}
-
-#[derive(Clone, Debug, Hash, PartialEq, Eq)]
-struct Alpha(String);
-
-impl Deref for Alpha {
-    type Target = String;
-    fn deref(&self) -> &String {
-        &self.0
-    }
-}
-
-const ALPHABET: &[u8] = b"abcdefghijklmnopqrstuvwxyz";
-
-impl Arbitrary for Alpha {
-    fn arbitrary(g: &mut Gen) -> Self {
-        let len = usize::arbitrary(g) % g.size();
-        let len = min(len, 16);
-        Alpha(
-            (0..len)
-                .map(|_| ALPHABET[usize::arbitrary(g) % ALPHABET.len()] as char)
-                .collect(),
-        )
-    }
-
-    fn shrink(&self) -> Box<dyn Iterator<Item = Self>> {
-        Box::new((**self).shrink().map(Alpha))
-    }
-}
-
-/// quickcheck Arbitrary adaptor -- make a larger vec
-#[derive(Clone, Debug)]
-struct Large<T>(T);
-
-impl<T> Deref for Large<T> {
-    type Target = T;
-    fn deref(&self) -> &T {
-        &self.0
-    }
-}
-
-impl<T> Arbitrary for Large<Vec<T>>
-where
-    T: Arbitrary,
-{
-    fn arbitrary(g: &mut Gen) -> Self {
-        let len = usize::arbitrary(g) % (g.size() * 10);
-        Large((0..len).map(|_| T::arbitrary(g)).collect())
-    }
-
-    fn shrink(&self) -> Box<dyn Iterator<Item = Self>> {
-        Box::new((**self).shrink().map(Large))
-    }
-}
diff --git a/vendor/indexmap/tests/tests.rs b/vendor/indexmap/tests/tests.rs
deleted file mode 100644
index 7d522f1c..00000000
--- a/vendor/indexmap/tests/tests.rs
+++ /dev/null
@@ -1,28 +0,0 @@
-use indexmap::{indexmap, indexset};
-
-#[test]
-fn test_sort() {
-    let m = indexmap! {
-        1 => 2,
-        7 => 1,
-        2 => 2,
-        3 => 3,
-    };
-
-    itertools::assert_equal(
-        m.sorted_by(|_k1, v1, _k2, v2| v1.cmp(v2)),
-        vec![(7, 1), (1, 2), (2, 2), (3, 3)],
-    );
-}
-
-#[test]
-fn test_sort_set() {
-    let s = indexset! {
-        1,
-        7,
-        2,
-        3,
-    };
-
-    itertools::assert_equal(s.sorted_by(|v1, v2| v1.cmp(v2)), vec![1, 2, 3, 7]);
-}