diff --git a/functions/std_accuracy_test.cpp b/functions/std_accuracy_test.cpp
index 4ac4fecd61..728f5c5523 100644
--- a/functions/std_accuracy_test.cpp
+++ b/functions/std_accuracy_test.cpp
@@ -18,7 +18,6 @@ namespace functions {
 namespace _multiprecision {
 
 using ::testing::AnyOf;
-using ::testing::Eq;
 using namespace boost::multiprecision;
 using namespace principia::quantities::_si;
 using namespace principia::testing_utilities::_almost_equals;
@@ -66,8 +65,13 @@ TEST_F(StdAccuracyTest, SinCos) {
       max_cos_ulp_distance =
           std::max(max_cos_ulp_distance, ULPDistance(std::cos(α), Cos(α)));
     }
-    EXPECT_THAT(max_sin_ulp_distance, IsNear(0.727_(1)));
-    EXPECT_THAT(max_cos_ulp_distance, IsNear(0.834_(1)));
+    EXPECT_THAT(max_sin_ulp_distance,
+                AnyOf(IsNear(0.727_(1)),    // Windows.
+                      IsNear(0.654_(1)),    // macOS.
+                      IsNear(0.513_(1))));  // Ubuntu.
+    EXPECT_THAT(max_cos_ulp_distance,
+                AnyOf(IsNear(0.834_(1)),    // Windows, macOS.
+                      IsNear(0.502_(1))));  // Ubuntu.
   }
 
   // Hardest argument reduction, [Mul+10] table 11.1.
@@ -76,7 +80,7 @@ TEST_F(StdAccuracyTest, SinCos) {
     EXPECT_THAT(ULPDistance(std::sin(x), Sin(x)), IsNear(9.89e-22_(1)));
     EXPECT_THAT(ULPDistance(std::cos(x), Cos(x)),
                 AnyOf(IsNear(0.0454_(1)),  // Windows, macOS.
-                      Eq(8)));             // Linux.
+                      IsNear(7.95_(1))));  // Linux.
   }
 }
 
diff --git a/ksp_plugin/flight_plan.cpp b/ksp_plugin/flight_plan.cpp
index 78045dce17..0b06e895da 100644
--- a/ksp_plugin/flight_plan.cpp
+++ b/ksp_plugin/flight_plan.cpp
@@ -83,7 +83,6 @@ FlightPlan::FlightPlan(FlightPlan const& other)
       desired_final_time_(other.desired_final_time_),
       anomalous_segments_(other.anomalous_segments_),
       manœuvres_(other.manœuvres_),
-      coast_analysers_(),
       ephemeris_(other.ephemeris_),
       analysis_is_enabled_(other.analysis_is_enabled_),
       adaptive_step_parameters_(other.adaptive_step_parameters_),
diff --git a/numerics/polynomial_evaluators_body.hpp b/numerics/polynomial_evaluators_body.hpp
index 4a82ab6dfa..4e2e975218 100644
--- a/numerics/polynomial_evaluators_body.hpp
+++ b/numerics/polynomial_evaluators_body.hpp
@@ -71,9 +71,6 @@ InternalEstrinEvaluator<Value, Argument, degree, fma, low, subdegree>::Evaluate(
     Argument const& argument) {
   static_assert(subdegree >= 2,
                 "Unexpected subdegree in InternalEstrinEvaluator::Evaluate");
-  // |n| is used to select |argument^(2^(n + 1))| = |argument^m|.
-  constexpr int n = FloorLog2(subdegree) - 1;
-  // |m| is |2^(n + 1)|.
   constexpr int m = PowerOf2Le(subdegree);
 
   auto const a =
@@ -108,9 +105,6 @@ EvaluateDerivative(Coefficients const& coefficients,
   static_assert(subdegree >= 2,
                 "Unexpected subdegree in InternalEstrinEvaluator::"
                 "EvaluateDerivative");
-  // |n| is used to select |argument^(2^(n + 1))| = |argument^m|.
-  constexpr int n = FloorLog2(subdegree) - 1;
-  // |m| is |2^(n + 1)|.
   constexpr int m = PowerOf2Le(subdegree);
 
   auto const a =
diff --git a/numerics/polynomial_evaluators_test.cpp b/numerics/polynomial_evaluators_test.cpp
index e16b2a98be..e49c96444e 100644
--- a/numerics/polynomial_evaluators_test.cpp
+++ b/numerics/polynomial_evaluators_test.cpp
@@ -26,7 +26,6 @@ class PolynomialEvaluatorTest : public ::testing::Test {
            int degree>
   void Test() {
     using E = Evaluator<double, double, degree>;
-    auto const* const e = E::Singleton();
     auto const binomial_coefficients =
         MakeBinomialTuple<typename E::Coefficients, degree>(
             std::make_index_sequence<degree + 1>());
diff --git a/physics/body_surface_reference_frame_body.hpp b/physics/body_surface_reference_frame_body.hpp
index acba744627..962508b8f4 100644
--- a/physics/body_surface_reference_frame_body.hpp
+++ b/physics/body_surface_reference_frame_body.hpp
@@ -106,8 +106,6 @@ template<typename InertialFrame, typename ThisFrame>
 AcceleratedRigidMotion<InertialFrame, ThisFrame>
 BodySurfaceReferenceFrame<InertialFrame, ThisFrame>::MotionOfThisFrame(
     Instant const& t) const {
-  DegreesOfFreedom<InertialFrame> const centre_degrees_of_freedom =
-      centre_trajectory_->EvaluateDegreesOfFreedom(t);
   Vector<Acceleration, InertialFrame> const centre_acceleration =
       ephemeris_->ComputeGravitationalAccelerationOnMassiveBody(centre_, t);
 
diff --git a/physics/ephemeris_test.cpp b/physics/ephemeris_test.cpp
index c49f3a836a..5d20732ecc 100644
--- a/physics/ephemeris_test.cpp
+++ b/physics/ephemeris_test.cpp
@@ -994,7 +994,6 @@ TEST_P(EphemerisTest, ComputeGravitationalJerkOnMassiveBody) {
   CHECK_OK(ephemeris->Prolong(j2000));
 
   auto const earth = ephemeris->bodies()[solar_system_2000.index("Earth")];
-  auto const earth_trajectory = ephemeris->trajectory(earth);
 
   std::mt19937_64 random(42);
   std::uniform_real_distribution<double> delay_distribution(1, 5);
diff --git a/physics/lagrange_equipotentials_test.cpp b/physics/lagrange_equipotentials_test.cpp
index 65a8825ddb..0e3bec6179 100644
--- a/physics/lagrange_equipotentials_test.cpp
+++ b/physics/lagrange_equipotentials_test.cpp
@@ -125,8 +125,6 @@ TEST_F(LagrangeEquipotentialsTest,
       reference_frame.ToThisFrameAtTimeSimilarly(t0_)(moon_dof);
   Position<World> const q_earth = earth_world_dof.position();
   Position<World> const q_moon = moon_world_dof.position();
-  Velocity<World> const v_earth = earth_world_dof.velocity();
-  Velocity<World> const v_moon = moon_world_dof.velocity();
   Position<World> const initial_earth_moon_l5 =
       Barycentre({q_earth, q_moon}, {1.0, 1.0}) +
       (q_earth - q_moon).Norm() *