diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d59fa35..9aa04ba 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,4 +1,8 @@
-on: push
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
 name: Run tests
 jobs:
   # The `ci-result` job doesn't actually test anything - it just aggregates the
@@ -30,20 +34,44 @@ jobs:
         working-directory: .
     strategy:
       matrix:
-        container_image:
+        toolchain:
           # We aim to support rust-stable plus (at least) the prior 3 releases,
           # giving us about 6 months of coverage.
           #
           # Minimum supported rust version (MSRV)
-          - "georust/geo-ci:rust-1.67"
-          # Two most recent releases - we omit older ones for expedient CI
-          - "georust/geo-ci:rust-1.69"
-          - "georust/geo-ci:rust-1.70"
-    container:
-      image: ${{ matrix.container_image }}
+          - "1.67"
+          # Two recent releases - we omit older ones for expedient CI
+          - "1.80"
+          - "stable"
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
+
+      - name: Install stable
+        run: |
+          rustup toolchain install ${{ matrix.toolchain }} --no-self-update --profile minimal --component rust-src rustfmt clippy
+
+      - name: Check with Rustfmt
+        run: cargo fmt --all --check
+
+      - name: Build (--no-default-features)
+        run: cargo build --no-default-features
+      - name: Build (--all-features)
+        run: cargo build --all-features
+      - name: Run tests (--all-features)
+        run: cargo test --all-features
+      - name: Build
+        run: cargo build
+      - name: Run tests
+        run: cargo test
+
+      - name: Check with Clippy (--no-default-features)
+        run: cargo clippy --tests --no-default-features -- -D warnings
+      - name: Check with Clippy (--all-features)
+        run: cargo clippy --tests --all-features -- -D warnings
+      - name: Check with Clippy
+        run: cargo clippy --tests -- -D warnings
+
       - run: cargo build --no-default-features
       - run: cargo test --no-default-features
       - run: cargo build --all-features
diff --git a/Cargo.toml b/Cargo.toml
index 7b99786..2526b95 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,4 +24,4 @@ serde = { version = "1.0", features = ["derive"], optional = true }
 
 [dev-dependencies]
 assert_approx_eq = "1"
-geo = "0.27"
+geo = "0.28"
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index 1d4286a..cac3b09 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -13,16 +13,16 @@ macro_rules! consume {
         ))
     }};
     ($xml:expr, $version:expr, $tagname:expr) => {{
-        use crate::parser::create_context;
         use std::io::BufReader;
+        use $crate::parser::create_context;
         consume(
             &mut create_context(BufReader::new($xml.as_bytes()), $version),
             $tagname,
         )
     }};
     ($xml:expr, $version:expr, $tagname:expr, $allow_empty:expr) => {{
-        use crate::parser::create_context;
         use std::io::BufReader;
+        use $crate::parser::create_context;
         consume(
             &mut create_context(BufReader::new($xml.as_bytes()), $version),
             $tagname,
diff --git a/src/writer.rs b/src/writer.rs
index 8fef2a5..8d31ec7 100644
--- a/src/writer.rs
+++ b/src/writer.rs
@@ -293,7 +293,11 @@ fn write_fix_if_exists<W: Write>(fix: &Option<Fix>, writer: &mut EventWriter<W>)
     Ok(())
 }
 
-fn write_track<W: Write>(version: GpxVersion, track: &Track, writer: &mut EventWriter<W>) -> GpxResult<()> {
+fn write_track<W: Write>(
+    version: GpxVersion,
+    track: &Track,
+    writer: &mut EventWriter<W>,
+) -> GpxResult<()> {
     write_xml_event(XmlEvent::start_element("trk"), writer)?;
     write_string_if_exists("name", &track.name, writer)?;
     write_string_if_exists("cmt", &track.comment, writer)?;
@@ -310,7 +314,11 @@ fn write_track<W: Write>(version: GpxVersion, track: &Track, writer: &mut EventW
     Ok(())
 }
 
-fn write_route<W: Write>(version: GpxVersion, route: &Route, writer: &mut EventWriter<W>) -> GpxResult<()> {
+fn write_route<W: Write>(
+    version: GpxVersion,
+    route: &Route,
+    writer: &mut EventWriter<W>,
+) -> GpxResult<()> {
     write_xml_event(XmlEvent::start_element("rte"), writer)?;
     write_string_if_exists("name", &route.name, writer)?;
     write_string_if_exists("cmt", &route.comment, writer)?;
@@ -354,11 +362,8 @@ fn write_waypoint<W: Write>(
         writer,
     )?;
     write_value_if_exists("ele", &waypoint.elevation, writer)?;
-    match version {
-        GpxVersion::Gpx10 => {
-            write_value_if_exists("speed", &waypoint.speed, writer)?;
-        }
-        _ => {}
+    if version == GpxVersion::Gpx10 {
+        write_value_if_exists("speed", &waypoint.speed, writer)?;
     }
     write_time_if_exists(&waypoint.time, writer)?;
     write_value_if_exists("geoidheight", &waypoint.geoidheight, writer)?;
diff --git a/tests/gpx_write.rs b/tests/gpx_write.rs
index 8ecdd7d..d035cfb 100644
--- a/tests/gpx_write.rs
+++ b/tests/gpx_write.rs
@@ -78,7 +78,7 @@ fn check_metadata_equal(reference_gpx: &Gpx, written_gpx: &Gpx) {
     check_links_equal(&reference.links, &written.links);
 }
 
-fn check_links_equal(reference: &Vec<Link>, written: &Vec<Link>) {
+fn check_links_equal(reference: &[Link], written: &[Link]) {
     assert_eq!(reference.len(), written.len());
     for (r, w) in reference.iter().zip(written) {
         assert_eq!(r.href, w.href);
@@ -98,7 +98,7 @@ fn check_points_equal(reference: &Gpx, written: &Gpx) {
     }
 }
 
-fn check_waypoints_equal(reference: &Vec<Waypoint>, written: &Vec<Waypoint>) {
+fn check_waypoints_equal(reference: &[Waypoint], written: &[Waypoint]) {
     assert_eq!(reference.len(), written.len());
     for (r_wp, w_wp) in reference.iter().zip(written) {
         assert_eq!(r_wp.point(), w_wp.point());