diff --git a/build.Dockerfile b/build.Dockerfile
index 3ded8f8..03b712f 100644
--- a/build.Dockerfile
+++ b/build.Dockerfile
@@ -16,7 +16,7 @@ RUN apt-get update && \
     ln -s $(which ld64.lld-20) /usr/bin/ld64.lld && \
     SDK_VERSION=14.5 UNATTENDED=1 ENABLE_COMPILER_RT_INSTALL=1 TARGET_DIR=/osxcross ./build.sh
 
-FROM rust:1.89-bookworm
+FROM rust:1.90-bookworm
 ADD --chmod=644 "https://apt.llvm.org/llvm-snapshot.gpg.key" /etc/apt/trusted.gpg.d/apt.llvm.org.asc
 COPY llvm.sources /etc/apt/sources.list.d/llvm.sources
 RUN rustup target add x86_64-pc-windows-msvc && \
diff --git a/build.rs b/build.rs
index befe091..551c09a 100644
--- a/build.rs
+++ b/build.rs
@@ -21,6 +21,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         .include(Path::new("shrooms-vb-core/util"))
         .opt_level(opt_level)
         .flag_if_supported("-fno-strict-aliasing")
+        .define("_CRT_SECURE_NO_WARNINGS", None)
         .define("VB_LITTLE_ENDIAN", None)
         .define("VB_SIGNED_PROPAGATE", None)
         .define("VB_DIV_GENERIC", None)
diff --git a/src/input.rs b/src/input.rs
index 220e9ba..2712d71 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -457,12 +457,6 @@ struct PersistedGamepadMapping {
     default_axes: Vec<(Code, (VBKey, VBKey))>,
 }
 
-#[derive(Serialize, Deserialize)]
-pub struct Shortcut {
-    pub shortcut: KeyboardShortcut,
-    pub command: Command,
-}
-
 #[derive(Clone, Copy, Serialize, Deserialize, PartialEq, Eq, Hash)]
 pub enum Command {
     OpenRom,
diff --git a/src/memory.rs b/src/memory.rs
index aa73d4f..1b4cc86 100644
--- a/src/memory.rs
+++ b/src/memory.rs
@@ -50,11 +50,11 @@ impl MemoryClient {
 }
 
 fn aligned_memory(start: u32, length: usize) -> BoxBytes {
-    if start % 4 == 0 && length % 4 == 0 {
+    if start.is_multiple_of(4) && length.is_multiple_of(4) {
         let memory = vec![0u32; length / 4].into_boxed_slice();
         return bytemuck::box_bytes_of(memory);
     }
-    if start % 2 == 0 && length % 2 == 0 {
+    if start.is_multiple_of(2) && length.is_multiple_of(2) {
         let memory = vec![0u16; length / 2].into_boxed_slice();
         return bytemuck::box_bytes_of(memory);
     }
diff --git a/src/window/vip/chardata.rs b/src/window/vip/chardata.rs
index 334b487..61e3960 100644
--- a/src/window/vip/chardata.rs
+++ b/src/window/vip/chardata.rs
@@ -274,12 +274,6 @@ impl AppWindow for CharacterDataWindow {
     }
 }
 
-#[derive(Serialize, Deserialize, Clone, PartialEq, Eq, Hash)]
-enum CharDataResource {
-    Character { palette: Palette, index: usize },
-    CharacterData { palette: Palette },
-}
-
 #[derive(Clone, Default, PartialEq, Eq)]
 struct CharDataParams {
     palette: Palette,