diff --git a/cykusz-rs/src/arch/x86_64/output/mod.rs b/cykusz-rs/src/arch/x86_64/output/mod.rs
index 553cd519..971872dd 100644
--- a/cykusz-rs/src/arch/x86_64/output/mod.rs
+++ b/cykusz-rs/src/arch/x86_64/output/mod.rs
@@ -195,6 +195,11 @@ pub fn log_fmt(args: core::fmt::Arguments) -> core::fmt::Result {
     core::fmt::write(&mut Log {}, args)
 }
 
+pub fn log_fmt_disabled(_args: core::fmt::Arguments) -> core::fmt::Result {
+    //core::fmt::write(&mut Log {}, args)
+    Ok(())
+}
+
 #[macro_export]
 macro_rules! println {
     ($fmt:expr) => (print!(concat!($fmt, "\n")));
@@ -215,9 +220,11 @@ macro_rules! logln_disabled {
 }
 
 #[macro_export]
+#[allow(unused)]
 macro_rules! log_disabled {
     ($($arg:tt)*) => {{
-        //$crate::arch::output::log_fmt(format_args!($($arg)*)).unwrap();
+        let _ = ($($arg)*);
+        $crate::arch::output::log_fmt_disabled(format_args!($($arg)*)).unwrap();
     }};
 }
 
@@ -228,9 +235,10 @@ macro_rules! logln {
 }
 
 #[macro_export]
+#[allow(unused)]
 macro_rules! log {
     ($($arg:tt)*) => ({
-        //$crate::arch::output::log_fmt(format_args!($($arg)*)).unwrap();
+        $crate::arch::output::log_fmt_disabled(format_args!($($arg)*)).unwrap();
     });
 }
 #[macro_export]
@@ -240,9 +248,10 @@ macro_rules! logln2 {
 }
 
 #[macro_export]
+#[allow(unused)]
 macro_rules! log2 {
     ($($arg:tt)*) => {{
-        //$crate::arch::output::log_fmt(format_args!($($arg)*)).unwrap();
+        $crate::arch::output::log_fmt_disabled(format_args!($($arg)*)).unwrap();
     }};
 }
 #[macro_export]
@@ -252,9 +261,10 @@ macro_rules! logln3 {
 }
 
 #[macro_export]
+#[allow(unused)]
 macro_rules! log3 {
     ($($arg:tt)*) => {{
-        //$crate::arch::output::log_fmt(format_args!($($arg)*)).unwrap();
+        $crate::arch::output::log_fmt_disabled(format_args!($($arg)*)).unwrap();
     }};
 }
 
@@ -265,8 +275,9 @@ macro_rules! logln4 {
 }
 
 #[macro_export]
+#[allow(unused)]
 macro_rules! log4 {
     ($($arg:tt)*) => {{
-        $crate::arch::output::log_fmt(format_args!($($arg)*)).unwrap();
+        $crate::arch::output::log_fmt_disabled(format_args!($($arg)*)).unwrap();
     }};
 }
diff --git a/cykusz-rs/src/arch/x86_64/syscall.rs b/cykusz-rs/src/arch/x86_64/syscall.rs
index 05508de9..10bac522 100644
--- a/cykusz-rs/src/arch/x86_64/syscall.rs
+++ b/cykusz-rs/src/arch/x86_64/syscall.rs
@@ -56,7 +56,7 @@ pub extern "C" fn fast_syscall_handler(sys_frame: &mut SyscallFrame, regs: &mut
             regs.rax, regs.rdi, regs.rsi, regs.rdx, regs.r10, regs.r8, regs.r9,
         );
 
-        logln_disabled!("done syscall {} = {}", regs.rax, res);
+        logln_disabled!("done syscall {} = {:?}", regs.rax, res);
 
         crate::arch::signal::arch_sys_check_signals(res, sys_frame, regs);
     }
diff --git a/cykusz-rs/src/arch/x86_64/utils.rs b/cykusz-rs/src/arch/x86_64/utils.rs
index ea03c15d..5648c9c9 100644
--- a/cykusz-rs/src/arch/x86_64/utils.rs
+++ b/cykusz-rs/src/arch/x86_64/utils.rs
@@ -1,4 +1,3 @@
-use alloc::vec::Vec;
 use crate::arch::mm::VirtAddr;
 use crate::drivers::elf::types::AuxvType;
 use crate::drivers::elf::ElfHeader;
@@ -61,7 +60,7 @@ impl<'a> StackHelper<'a> {
     }
 
     pub unsafe fn write_aux(&mut self, hdr: &ElfHeader, base_addr: VirtAddr, path_ptr: u64) {
-        let mut hdr: [(AuxvType, usize); 5] = [
+        let hdr: [(AuxvType, usize); 5] = [
             (AuxvType::AtPhdr, hdr.e_phoff as usize + base_addr.0),
             (AuxvType::AtPhEnt, hdr.e_phentsize as usize),
             (AuxvType::AtPhNum, hdr.e_phnum as usize),
diff --git a/cykusz-rs/src/kernel/fs/ext2/blockgroup.rs b/cykusz-rs/src/kernel/fs/ext2/blockgroup.rs
index 0cb501fb..05a9efd8 100644
--- a/cykusz-rs/src/kernel/fs/ext2/blockgroup.rs
+++ b/cykusz-rs/src/kernel/fs/ext2/blockgroup.rs
@@ -359,7 +359,7 @@ impl BlockGroupDescriptors {
     pub fn debug(&self) {
         let l = self.d_desc.lock();
 
-        for _d in l.vec.iter() {
+        for d in l.vec.iter() {
             logln_disabled!("{:?}", d);
         }
     }
diff --git a/cykusz-rs/src/kernel/fs/ext2/mod.rs b/cykusz-rs/src/kernel/fs/ext2/mod.rs
index 9d6c88fd..e9d079a0 100644
--- a/cykusz-rs/src/kernel/fs/ext2/mod.rs
+++ b/cykusz-rs/src/kernel/fs/ext2/mod.rs
@@ -4,7 +4,6 @@ use alloc::sync::{Arc, Weak};
 use crate::kernel::block::BlockDev;
 use spin::Once;
 use uuid::Uuid;
-use crate::kernel::device::Device;
 
 use crate::kernel::fs::dirent::{DirEntry, DirEntryItem};
 use crate::kernel::fs::ext2::buf_block::{BufBlock, SliceBlock};
diff --git a/cykusz-rs/src/kernel/syscall/sys.rs b/cykusz-rs/src/kernel/syscall/sys.rs
index 1f8a4226..5faca316 100644
--- a/cykusz-rs/src/kernel/syscall/sys.rs
+++ b/cykusz-rs/src/kernel/syscall/sys.rs
@@ -473,8 +473,6 @@ pub fn sys_unlink(at: u64, path: u64, path_len: u64, flags: u64) -> SyscallResul
         return Err(SyscallError::EBADFD);
     }
 
-
-
     let (_, name) = path.containing_dir();
 
     let file = lookup_by_real_path(path, LookupMode::None)?;
@@ -1107,9 +1105,13 @@ pub fn sys_truncate(fd: u64, size: u64) -> SyscallResult {
     logln4!("truncate {} to size {}", fd, size);
     let task = current_task_ref();
 
-    task.filetable().get_handle(fd as usize).ok_or(SyscallError::EBADFD)?.inode.inode().truncate(size as usize).map(|_r| {
-        Ok(0)
-    })?
+    task.filetable()
+        .get_handle(fd as usize)
+        .ok_or(SyscallError::EBADFD)?
+        .inode
+        .inode()
+        .truncate(size as usize)
+        .map(|_r| Ok(0))?
 }
 
 pub fn sys_futex_wake(uaddr: u64) -> SyscallResult {
diff --git a/cykusz-rs/src/kernel/task/mod.rs b/cykusz-rs/src/kernel/task/mod.rs
index 3406bf1b..6e489b15 100644
--- a/cykusz-rs/src/kernel/task/mod.rs
+++ b/cykusz-rs/src/kernel/task/mod.rs
@@ -202,8 +202,16 @@ impl Task {
         if let Some((base_addr, entry, elf_hdr, tls_vm)) = vm.load_bin(exe.clone()) {
             vm.log_vm();
             unsafe {
-                self.arch_task_mut()
-                    .exec(base_addr, entry, &elf_hdr, vm, tls_vm, exe.full_path(), args, envs)
+                self.arch_task_mut().exec(
+                    base_addr,
+                    entry,
+                    &elf_hdr,
+                    vm,
+                    tls_vm,
+                    exe.full_path(),
+                    args,
+                    envs,
+                )
             }
         } else {
             Err(SyscallError::EINVAL)