Cleanup build warnings imports and unnecessary unsafe

lib/clif-backend/src/cache.rs

@@ -5,7 +5,7 @@ use std::sync::Arc;
 use wasmer_runtime_core::{
     backend::{sys::Memory, CacheGen},
     cache::{Artifact, Error},
-    module::{ModuleInfo, ModuleInner},
+    module::ModuleInfo,
     structures::Map,
     types::{LocalFuncIndex, SigIndex},
 };

lib/llvm-backend/src/backend.rs

@@ -297,7 +297,7 @@ impl LLVMBackend {
         let callbacks = get_callbacks();
         let mut module: *mut LLVMModule = ptr::null_mut();
 
-        let slice = unsafe { memory.as_slice() };
+        let slice = memory.as_slice();
 
         let res = module_load(slice.as_ptr(), slice.len(), callbacks, &mut module);
 
@@ -307,7 +307,7 @@ impl LLVMBackend {
 
         static SIGNAL_HANDLER_INSTALLED: Once = Once::new();
 
-        SIGNAL_HANDLER_INSTALLED.call_once(|| unsafe {
+        SIGNAL_HANDLER_INSTALLED.call_once(|| {
             crate::platform::install_signal_handler();
         });
 

lib/singlepass-backend/src/lib.rs

@@ -31,7 +31,7 @@ use wasmer_runtime_core::{
     backend::{sys::Memory, Backend, CacheGen, Compiler, CompilerConfig, Token},
     cache::{Artifact, Error as CacheError},
     error::{CompileError, CompileResult},
-    module::{ModuleInfo, ModuleInner},
+    module::ModuleInner,
 };
 
 struct Placeholder;

lib/singlepass-backend/src/parse.rs

@@ -15,8 +15,7 @@ use wasmer_runtime_core::{
     units::Pages,
 };
 use wasmparser::{
-    BinaryReaderError, Data, DataKind, Element, ElementKind, Export, ExternalKind, FuncType,
-    Import, ImportSectionEntryType, InitExpr, ModuleReader, Operator, SectionCode, Type as WpType,
+    BinaryReaderError, ExternalKind, FuncType, ImportSectionEntryType, Operator, Type as WpType,
     WasmDecoder,
 };
 

lib/win-exception-handler/build.rs

@@ -1,8 +1,7 @@
-use cmake::Config;
-
 fn main() {
     #[cfg(target_os = "windows")]
     {
+        use cmake::Config;
         let project_name = "exception_handling";
         let dst = Config::new(project_name).build();
         println!("cargo:rustc-link-search=native={}", dst.display());