diff --git a/agb/Cargo.lock b/agb/Cargo.lock
index 3ea5f3c7..472cef4a 100644
--- a/agb/Cargo.lock
+++ b/agb/Cargo.lock
@@ -24,8 +24,6 @@ dependencies = [
  "agb_sound_converter",
  "bare-metal",
  "bitflags",
- "hashbrown",
- "rustc-hash",
 ]
 
 [[package]]
@@ -67,17 +65,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "ahash"
-version = "0.7.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
-dependencies = [
- "getrandom",
- "once_cell",
- "version_check",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -149,15 +136,6 @@ dependencies = [
  "wasi",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
-dependencies = [
- "ahash",
-]
-
 [[package]]
 name = "hound"
 version = "3.4.0"
@@ -235,12 +213,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "once_cell"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
-
 [[package]]
 name = "png"
 version = "0.17.5"
@@ -307,12 +279,6 @@ dependencies = [
  "getrandom",
 ]
 
-[[package]]
-name = "rustc-hash"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
-
 [[package]]
 name = "serde"
 version = "1.0.136"
@@ -359,12 +325,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
-[[package]]
-name = "version_check"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
-
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
diff --git a/agb/Cargo.toml b/agb/Cargo.toml
index 55af71f6..dbd7d298 100644
--- a/agb/Cargo.toml
+++ b/agb/Cargo.toml
@@ -21,13 +21,11 @@ freq18157 = ["agb_sound_converter/freq18157"]
 
 [dependencies]
 bitflags = "1.3"
-hashbrown = "0.12.0"
 agb_image_converter = { version = "0.6.0", path = "../agb-image-converter" }
 agb_sound_converter = { version = "0.1.0", path = "../agb-sound-converter" }
 agb_macros = { version = "0.1.0", path = "../agb-macros" }
 agb_fixnum = { version = "0.1.0", path = "../agb-fixnum" }
 bare-metal = "1.0"
-rustc-hash =  { version = "1.0", default-features = false }
 
 [package.metadata.docs.rs]
 default-target = "thumbv6m-none-eabi"
diff --git a/agb/src/display/tiled/vram_manager.rs b/agb/src/display/tiled/vram_manager.rs
index 249023ba..1da86d9f 100644
--- a/agb/src/display/tiled/vram_manager.rs
+++ b/agb/src/display/tiled/vram_manager.rs
@@ -10,12 +10,12 @@ const PALETTE_BACKGROUND: MemoryMapped1DArray<u16, 256> =
     unsafe { MemoryMapped1DArray::new(0x0500_0000) };
 
 #[cfg(debug_assertions)]
-const unsafe fn debug_unreachable_unchecked() -> ! {
-    unreachable!();
+unsafe fn debug_unreachable_unchecked(message: &'static str) -> ! {
+    unreachable!(message);
 }
 
 #[cfg(not(debug_assertions))]
-const unsafe fn debug_unreachable_unchecked() -> ! {
+const unsafe fn debug_unreachable_unchecked(message: &'static str) -> ! {
     use core::hint::unreachable_unchecked;
 
     unreachable_unchecked();
@@ -88,7 +88,7 @@ impl VRamState {
         if let VRamState::ReferenceCounted(count, _) = self {
             *count += 1;
         } else {
-            unsafe { debug_unreachable_unchecked() };
+            unsafe { debug_unreachable_unchecked("Cannot increase reference count of free item") };
         }
     }
 
@@ -97,7 +97,7 @@ impl VRamState {
             *count -= 1;
             (*count, *tile_ref)
         } else {
-            unsafe { debug_unreachable_unchecked() };
+            unsafe { debug_unreachable_unchecked("Cannot decrease reference count of free item") };
         }
     }
 }
@@ -151,7 +151,7 @@ impl<'a> VRamManager<'a> {
                     self.tilesets[ptr] = tileset;
                     ptr
                 }
-                _ => unsafe { debug_unreachable_unchecked() },
+                _ => unsafe { debug_unreachable_unchecked("Free pointer cannot point to data") },
             }
         } else {
             self.tilesets.push(tileset);
@@ -183,7 +183,7 @@ impl<'a> VRamManager<'a> {
 
                 self.free_pointer = Some(tile_set_ref.id as usize);
             }
-            _ => unsafe { debug_unreachable_unchecked() },
+            _ => panic!("Must remove valid tileset"),
         }
     }
 
@@ -206,7 +206,9 @@ impl<'a> VRamManager<'a> {
                         self.vram_free_pointer = Some(next_free as usize);
                     }
                 }
-                VRamState::ReferenceCounted(_, _) => unsafe { debug_unreachable_unchecked() },
+                VRamState::ReferenceCounted(_, _) => unsafe {
+                    debug_unreachable_unchecked("Free pointer must point to free item")
+                },
             }
 
             self.references[ptr] = VRamState::ReferenceCounted(1, tile_ref);
@@ -228,7 +230,7 @@ impl<'a> VRamManager<'a> {
             let tile_offset = (tile as usize) * data.format.tile_size() / 4;
             &data.tiles[tile_offset..(tile_offset + data.format.tile_size() / 4)]
         } else {
-            unsafe { debug_unreachable_unchecked() };
+            panic!("Tile set ref must point to existing tile set");
         };
 
         let tile_size_in_half_words = TileFormat::FourBpp.tile_size() / 2;
diff --git a/examples/the-hat-chooses-the-wizard/Cargo.lock b/examples/the-hat-chooses-the-wizard/Cargo.lock
index c6a6fad7..5b924d8d 100644
--- a/examples/the-hat-chooses-the-wizard/Cargo.lock
+++ b/examples/the-hat-chooses-the-wizard/Cargo.lock
@@ -24,8 +24,6 @@ dependencies = [
  "agb_sound_converter",
  "bare-metal",
  "bitflags",
- "hashbrown",
- "rustc-hash",
 ]
 
 [[package]]
@@ -67,17 +65,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "ahash"
-version = "0.7.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
-dependencies = [
- "getrandom",
- "once_cell",
- "version_check",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -149,15 +136,6 @@ dependencies = [
  "wasi",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
-dependencies = [
- "ahash",
-]
-
 [[package]]
 name = "hound"
 version = "3.4.0"
@@ -241,12 +219,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "once_cell"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
-
 [[package]]
 name = "png"
 version = "0.17.5"
@@ -313,12 +285,6 @@ dependencies = [
  "getrandom",
 ]
 
-[[package]]
-name = "rustc-hash"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
-
 [[package]]
 name = "ryu"
 version = "1.0.9"
@@ -391,12 +357,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
-[[package]]
-name = "version_check"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
-
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
diff --git a/examples/the-purple-night/Cargo.lock b/examples/the-purple-night/Cargo.lock
index 49150aff..cbb2dcc7 100644
--- a/examples/the-purple-night/Cargo.lock
+++ b/examples/the-purple-night/Cargo.lock
@@ -24,8 +24,6 @@ dependencies = [
  "agb_sound_converter",
  "bare-metal",
  "bitflags",
- "hashbrown",
- "rustc-hash",
 ]
 
 [[package]]
@@ -67,17 +65,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "ahash"
-version = "0.7.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
-dependencies = [
- "getrandom",
- "once_cell",
- "version_check",
-]
-
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -173,15 +160,6 @@ dependencies = [
  "wasi",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
-dependencies = [
- "ahash",
-]
-
 [[package]]
 name = "hound"
 version = "3.4.0"
@@ -271,12 +249,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "once_cell"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
-
 [[package]]
 name = "png"
 version = "0.17.5"
@@ -349,12 +321,6 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3582f63211428f83597b51b2ddb88e2a91a9d52d12831f9d08f5e624e8977422"
 
-[[package]]
-name = "rustc-hash"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
-
 [[package]]
 name = "serde"
 version = "1.0.136"
@@ -428,12 +394,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
-[[package]]
-name = "version_check"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
-
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"