Fix warnings.

src/base/alias.rs

@@ -1,4 +1,6 @@
-use base::dimension::{Dynamic, U1, U2, U3, U4, U5, U6};
+#[cfg(any(feature = "alloc", feature = "std"))]
+use base::dimension::Dynamic;
+use base::dimension::{U1, U2, U3, U4, U5, U6};
 #[cfg(any(feature = "std", feature = "alloc"))]
 use base::matrix_vec::MatrixVec;
 use base::storage::Owned;

src/base/blas.rs

@@ -2,6 +2,7 @@ use alga::general::{ClosedAdd, ClosedMul};
 #[cfg(feature = "std")]
 use matrixmultiply;
 use num::{One, Signed, Zero};
+#[cfg(feature = "std")]
 use std::mem;
 
 use base::allocator::Allocator;

src/base/construction.rs

@@ -4,8 +4,10 @@ use base::storage::Owned;
 use quickcheck::{Arbitrary, Gen};
 
 use num::{Bounded, One, Zero};
+#[cfg(feature = "std")]
+use rand;
 use rand::distributions::{Distribution, Standard};
-use rand::{self, Rng};
+use rand::Rng;
 use std::iter;
 use typenum::{self, Cmp, Greater};
 

src/base/default_allocator.rs

@@ -15,7 +15,9 @@ use generic_array::ArrayLength;
 use typenum::Prod;
 
 use base::allocator::{Allocator, Reallocator};
-use base::dimension::{Dim, DimName, Dynamic};
+#[cfg(any(feature = "alloc", feature = "std"))]
+use base::dimension::Dynamic;
+use base::dimension::{Dim, DimName};
 use base::matrix_array::MatrixArray;
 #[cfg(any(feature = "std", feature = "alloc"))]
 use base::matrix_vec::MatrixVec;

src/base/matrix.rs

@@ -928,7 +928,7 @@ where
         }
 
         #[cfg(not(feature = "std"))]
-        fn val_width<N: Scalar + fmt::Display>(val: N, f: &mut fmt::Formatter) -> usize {
+        fn val_width<N: Scalar + fmt::Display>(_: N, _: &mut fmt::Formatter) -> usize {
             4
         }
 

src/linalg/permutation_sequence.rs

@@ -6,7 +6,9 @@ use num::One;
 
 use allocator::Allocator;
 use base::{DefaultAllocator, Matrix, Scalar, VectorN};
-use dimension::{Dim, DimName, Dynamic, U1};
+#[cfg(any(feature = "std", feature = "alloc"))]
+use dimension::Dynamic;
+use dimension::{Dim, DimName, U1};
 use storage::StorageMut;
 
 /// A sequence of row or column permutations.