all: bump MSRV to 1.87.0

Use newly stabilized `is_multiple_of`.

Cargo.toml

@@ -57,7 +57,7 @@ edition = "2024"
 homepage = "https://aya-rs.dev"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/aya-rs/aya"
-rust-version = "1.85.0"
+rust-version = "1.87.0"
 
 # NOTE(vadorovsky): Neither cargo-udeps nor cargo-machete are able to detect
 # unused crates defined in this section. It would be nice to teach either of

aya-obj/src/obj.rs

@@ -1404,7 +1404,7 @@ pub fn parse_map_info(info: bpf_map_info, pinned: PinningType) -> Map {
 
 /// Copies a block of eBPF instructions
 pub fn copy_instructions(data: &[u8]) -> Result<Vec<bpf_insn>, ParseError> {
-    if data.len() % mem::size_of::<bpf_insn>() > 0 {
+    if !data.len().is_multiple_of(mem::size_of::<bpf_insn>()) {
         return Err(ParseError::InvalidProgramCode);
     }
     let instructions = data

aya-obj/src/relocation.rs

@@ -202,7 +202,7 @@ fn relocate_maps<'a, I: Iterator<Item = &'a Relocation>>(
 
         // make sure that the relocation offset is properly aligned
         let ins_offset = rel_offset - section_offset;
-        if ins_offset % INS_SIZE != 0 {
+        if !ins_offset.is_multiple_of(INS_SIZE) {
             return Err(RelocationError::InvalidRelocationOffset {
                 offset: rel.offset,
                 relocation_number: rel_n,

test/integration-ebpf/src/ring_buf.rs

@@ -40,7 +40,7 @@ fn ring_buf_test(ctx: ProbeContext) {
         Some(arg) => arg,
         None => return,
     };
-    if arg % 2 == 0 {
+    if arg.is_multiple_of(2) {
         entry.write(arg);
         entry.submit(0);
     } else {