Fix UT1

.github/workflows/python.yml

@@ -31,8 +31,6 @@ jobs:
           python-version: '3.11'
           check-latest: false
           allow-prereleases: false
-      - name: Remove bad python
-        run: ls -l `which python`; ls -l /usr/bin/python*
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with:
@@ -63,6 +61,7 @@ jobs:
         shell: bash
         run: |
           set -e
+          ls dist
           pip install hifitime --find-links dist --force-reinstall
           pip install pytest
           pytest
@@ -79,6 +78,7 @@ jobs:
             pip3 install -U pip pytest
           run: |
             set -e
+            ls dist
             pip3 install hifitime --find-links dist --force-reinstall
             pytest
 

.github/workflows/tests.yml

@@ -91,7 +91,7 @@ jobs:
       - name: Install stable toolchain
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.64 # Run lints using the MSRV not latest
+          toolchain: 1.74 # Run lints using the MSRV not latest
           components: rustfmt, clippy
 
       - name: Run cargo fmt

src/epoch.rs

@@ -139,6 +139,7 @@ impl Hash for Epoch {
     }
 }
 
+#[cfg(feature = "serde")]
 impl Serialize for Epoch {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
     where
@@ -149,6 +150,7 @@ impl Serialize for Epoch {
     }
 }
 
+#[cfg(feature = "serde")]
 impl<'de> Deserialize<'de> for Epoch {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
     where
@@ -2477,11 +2479,7 @@ impl Epoch {
     #[must_use]
     /// Returns this time in a Duration past J1900 counted in UT1
     pub fn to_ut1(&self, provider: Ut1Provider) -> Self {
-        let mut me = *self;
-        // TAI = UT1 + offset <=> UTC = TAI - offset
-        me.duration -= self.ut1_offset(provider).unwrap_or(Duration::ZERO);
-        me.time_scale = TimeScale::TAI;
-        me
+        Self::from_tai_duration(self.to_ut1_duration(provider))
     }
 
     #[must_use]