codecheck: Fix warnings

os/src/fs/mod.rs

@@ -11,6 +11,6 @@ pub trait File: Send + Sync {
     fn write(&self, buf: UserBuffer) -> usize;
 }
 
-pub use inode::{list_apps, open_file, OSInode, OpenFlags};
-pub use pipe::{make_pipe, Pipe};
+pub use inode::{list_apps, open_file, OpenFlags};
+pub use pipe::make_pipe;
 pub use stdio::{Stdin, Stdout};

os/src/mm/mod.rs

@@ -12,7 +12,7 @@ pub use memory_set::{kernel_token, MapPermission, MemorySet, KERNEL_SPACE};
 use page_table::PTEFlags;
 pub use page_table::{
     translated_byte_buffer, translated_ref, translated_refmut, translated_str, PageTable,
-    PageTableEntry, UserBuffer, UserBufferIterator,
+    PageTableEntry, UserBuffer,
 };
 
 pub fn init() {

user/src/bin/adder_atomic.rs

@@ -6,8 +6,8 @@ extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
-use core::sync::atomic::{AtomicBool, Ordering};
 use core::ptr::addr_of_mut;
+use core::sync::atomic::{AtomicBool, Ordering};
 use user_lib::{exit, get_time, thread_create, waittid, yield_};
 
 static mut A: usize = 0;

user/src/bin/eisenberg.rs

@@ -7,7 +7,10 @@ extern crate alloc;
 extern crate core;
 
 use alloc::vec::Vec;
-use core::{ptr::{addr_of, addr_of_mut, read_volatile, write_volatile}, sync::atomic::{AtomicUsize, Ordering}};
+use core::{
+    ptr::{addr_of, addr_of_mut, read_volatile, write_volatile},
+    sync::atomic::{AtomicUsize, Ordering},
+};
 use user_lib::{exit, sleep, thread_create, waittid};
 
 const N: usize = 2;