diff --git a/src/core/matrix/pdu/id.rs b/src/core/matrix/pdu/id.rs
index 896d677b..d024ad07 100644
--- a/src/core/matrix/pdu/id.rs
+++ b/src/core/matrix/pdu/id.rs
@@ -1,5 +1,4 @@
 use super::{Count, RawId};
-use crate::utils::u64_from_u8x8;
 
 pub type ShortRoomId = ShortId;
 pub type ShortEventId = ShortId;
@@ -16,8 +15,8 @@ impl From<RawId> for Id {
 	#[inline]
 	fn from(raw: RawId) -> Self {
 		Self {
-			shortroomid: u64_from_u8x8(raw.shortroomid()),
-			shorteventid: Count::from_unsigned(u64_from_u8x8(raw.shorteventid())),
+			shortroomid: u64::from_be_bytes(raw.shortroomid()),
+			shorteventid: Count::from_unsigned(u64::from_be_bytes(raw.shorteventid())),
 		}
 	}
 }
diff --git a/src/core/utils/bytes.rs b/src/core/utils/bytes.rs
index 93afa734..79723b76 100644
--- a/src/core/utils/bytes.rs
+++ b/src/core/utils/bytes.rs
@@ -31,7 +31,7 @@ pub fn pretty(bytes: usize) -> String {
 #[inline]
 #[must_use]
 pub fn increment(old: Option<&[u8]>) -> [u8; 8] {
-	old.map_or(0_u64, u64_from_bytes_or_zero)
+	old.map_or(0_u64, |bytes| u64_from_bytes(bytes).unwrap_or(0))
 		.wrapping_add(1)
 		.to_be_bytes()
 }
@@ -45,16 +45,4 @@ pub fn u64_from_u8(bytes: &[u8]) -> u64 {
 
 /// Parses the big-endian bytes into an u64.
 #[inline]
-#[must_use]
-pub fn u64_from_bytes_or_zero(bytes: &[u8]) -> u64 { u64_from_bytes(bytes).unwrap_or(0) }
-
-/// Parses the big-endian bytes into an u64.
-#[inline]
-pub fn u64_from_bytes(bytes: &[u8]) -> Result<u64> { Ok(u64_from_u8x8(*u8x8_from_bytes(bytes)?)) }
-
-#[inline]
-#[must_use]
-pub fn u64_from_u8x8(bytes: [u8; 8]) -> u64 { u64::from_be_bytes(bytes) }
-
-#[inline]
-pub fn u8x8_from_bytes(bytes: &[u8]) -> Result<&[u8; 8]> { Ok(bytes.try_into()?) }
+pub fn u64_from_bytes(bytes: &[u8]) -> Result<u64> { Ok(u64::from_be_bytes(bytes.try_into()?)) }
diff --git a/src/core/utils/html.rs b/src/core/utils/html.rs
deleted file mode 100644
index eac4c47f..00000000
--- a/src/core/utils/html.rs
+++ /dev/null
@@ -1,40 +0,0 @@
-use std::fmt;
-
-/// Wrapper struct which will emit the HTML-escaped version of the contained
-/// string when passed to a format string.
-pub struct Escape<'a>(pub &'a str);
-
-/// Copied from librustdoc:
-/// * <https://github.com/rust-lang/rust/blob/cbaeec14f90b59a91a6b0f17fc046c66fa811892/src/librustdoc/html/escape.rs>
-#[allow(clippy::string_slice)]
-impl fmt::Display for Escape<'_> {
-	fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
-		// Because the internet is always right, turns out there's not that many
-		// characters to escape: http://stackoverflow.com/questions/7381974
-		let Escape(s) = *self;
-		let pile_o_bits = s;
-		let mut last = 0;
-		for (i, ch) in s.char_indices() {
-			let s = match ch {
-				| '>' => "&gt;",
-				| '<' => "&lt;",
-				| '&' => "&amp;",
-				| '\'' => "&#39;",
-				| '"' => "&quot;",
-				| _ => continue,
-			};
-
-			fmt.write_str(&pile_o_bits[last..i])?;
-			fmt.write_str(s)?;
-
-			// NOTE: we only expect single byte characters here - which is fine as long as
-			// we only match single byte characters
-			last = i.saturating_add(1);
-		}
-
-		if last < s.len() {
-			fmt.write_str(&pile_o_bits[last..])?;
-		}
-		Ok(())
-	}
-}
diff --git a/src/core/utils/math.rs b/src/core/utils/math.rs
index 9316731c..0b8f4633 100644
--- a/src/core/utils/math.rs
+++ b/src/core/utils/math.rs
@@ -1,7 +1,7 @@
 mod expected;
 mod tried;
 
-use std::{cmp, convert::TryFrom};
+use std::convert::TryFrom;
 
 pub use checked_ops::checked_ops;
 
@@ -97,17 +97,11 @@ pub fn usize_from_u64_truncated(val: u64) -> usize { val as usize }
 
 #[inline]
 pub fn try_into<Dst: TryFrom<Src>, Src>(src: Src) -> Result<Dst> {
-	Dst::try_from(src).map_err(try_into_err::<Dst, Src>)
+	Dst::try_from(src).map_err(|_| {
+		err!(Arithmetic(
+			"failed to convert from {} to {}",
+			type_name::<Src>(),
+			type_name::<Dst>()
+		))
+	})
 }
-
-fn try_into_err<Dst: TryFrom<Src>, Src>(e: <Dst as TryFrom<Src>>::Error) -> Error {
-	drop(e);
-	err!(Arithmetic(
-		"failed to convert from {} to {}",
-		type_name::<Src>(),
-		type_name::<Dst>()
-	))
-}
-
-#[inline]
-pub fn clamp<T: Ord>(val: T, min: T, max: T) -> T { cmp::min(cmp::max(val, min), max) }
diff --git a/src/core/utils/mod.rs b/src/core/utils/mod.rs
index f9724534..157d573b 100644
--- a/src/core/utils/mod.rs
+++ b/src/core/utils/mod.rs
@@ -6,7 +6,6 @@ pub mod debug;
 pub mod defer;
 pub mod future;
 pub mod hash;
-pub mod html;
 pub mod json;
 pub mod math;
 pub mod mutex_map;
@@ -27,13 +26,11 @@ pub use ::tuwunel_macros::implement;
 pub use self::{
 	arrayvec::ArrayVecExt,
 	bool::BoolExt,
-	bytes::{increment, u64_from_bytes, u64_from_u8, u64_from_u8x8},
+	bytes::{increment, u64_from_bytes, u64_from_u8},
 	debug::slice_truncated as debug_slice_truncated,
 	future::{BoolExt as FutureBoolExt, OptionStream, TryExtExt as TryFutureExtExt},
 	hash::sha256::delimited as calculate_hash,
-	html::Escape as HtmlEscape,
 	json::{deserialize_from_str, to_canonical_object},
-	math::clamp,
 	mutex_map::{Guard as MutexMapGuard, MutexMap},
 	rand::{shuffle, string as random_string},
 	stream::{IterStream, ReadyExt, Tools as StreamTools, TryReadyExt},