diff --git a/src/backtrace/libunwind.rs b/src/backtrace/libunwind.rs
index c3d88605..d439be06 100644
--- a/src/backtrace/libunwind.rs
+++ b/src/backtrace/libunwind.rs
@@ -15,7 +15,6 @@
 //!
 //! This is the default unwinding API for all non-Windows platforms currently.
 
-use super::super::Bomb;
 use core::ffi::c_void;
 use core::ptr::addr_of_mut;
 
@@ -100,6 +99,18 @@ impl Clone for Frame {
     }
 }
 
+struct Bomb {
+    enabled: bool,
+}
+
+impl Drop for Bomb {
+    fn drop(&mut self) {
+        if self.enabled {
+            panic!("cannot panic during the backtrace function");
+        }
+    }
+}
+
 #[inline(always)]
 pub unsafe fn trace(mut cb: &mut dyn FnMut(&super::Frame) -> bool) {
     uw::_Unwind_Backtrace(trace_fn, addr_of_mut!(cb).cast());
diff --git a/src/capture.rs b/src/capture.rs
index d1691b89..f7d4b4fe 100644
--- a/src/capture.rs
+++ b/src/capture.rs
@@ -1,5 +1,7 @@
+#[cfg(feature = "serde")]
+use crate::resolve;
 use crate::PrintFmt;
-use crate::{resolve, resolve_frame, trace, BacktraceFmt, Symbol, SymbolName};
+use crate::{resolve_frame, trace, BacktraceFmt, Symbol, SymbolName};
 use std::ffi::c_void;
 use std::fmt;
 use std::path::{Path, PathBuf};
@@ -50,7 +52,7 @@ pub struct BacktraceFrame {
 #[derive(Clone)]
 enum Frame {
     Raw(crate::Frame),
-    #[allow(dead_code)]
+    #[cfg(feature = "serde")]
     Deserialized {
         ip: usize,
         symbol_address: usize,
@@ -62,6 +64,7 @@ impl Frame {
     fn ip(&self) -> *mut c_void {
         match *self {
             Frame::Raw(ref f) => f.ip(),
+            #[cfg(feature = "serde")]
             Frame::Deserialized { ip, .. } => ip as *mut c_void,
         }
     }
@@ -69,6 +72,7 @@ impl Frame {
     fn symbol_address(&self) -> *mut c_void {
         match *self {
             Frame::Raw(ref f) => f.symbol_address(),
+            #[cfg(feature = "serde")]
             Frame::Deserialized { symbol_address, .. } => symbol_address as *mut c_void,
         }
     }
@@ -76,6 +80,7 @@ impl Frame {
     fn module_base_address(&self) -> Option<*mut c_void> {
         match *self {
             Frame::Raw(ref f) => f.module_base_address(),
+            #[cfg(feature = "serde")]
             Frame::Deserialized {
                 module_base_address,
                 ..
@@ -97,6 +102,7 @@ impl Frame {
         };
         match *self {
             Frame::Raw(ref f) => resolve_frame(f, sym),
+            #[cfg(feature = "serde")]
             Frame::Deserialized { ip, .. } => {
                 resolve(ip as *mut c_void, sym);
             }
diff --git a/src/lib.rs b/src/lib.rs
index 7b4bbc2e..e9be4009 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -138,21 +138,6 @@ cfg_if::cfg_if! {
     }
 }
 
-#[allow(dead_code)]
-struct Bomb {
-    enabled: bool,
-}
-
-#[allow(dead_code)]
-impl Drop for Bomb {
-    fn drop(&mut self) {
-        if self.enabled {
-            panic!("cannot panic during the backtrace function");
-        }
-    }
-}
-
-#[allow(dead_code)]
 #[cfg(feature = "std")]
 mod lock {
     use std::boxed::Box;