diff --git a/library/proc_macro/src/bridge/client.rs b/library/proc_macro/src/bridge/client.rs
index 8ae7b6de1a6..83a2ac6f0d4 100644
--- a/library/proc_macro/src/bridge/client.rs
+++ b/library/proc_macro/src/bridge/client.rs
@@ -78,7 +78,7 @@ fn encode(self, w: &mut Writer, s: &mut S) {
                 }
             }
 
-            impl<S: server::Types> Decode<'_, 's, HandleStore<server::MarkedTypes<S>>>
+            impl<'s, S: server::Types> Decode<'_, 's, HandleStore<server::MarkedTypes<S>>>
                 for &'s Marked<S::$oty, $oty>
             {
                 fn decode(r: &mut Reader<'_>, s: &'s HandleStore<server::MarkedTypes<S>>) -> Self {
@@ -92,7 +92,7 @@ fn encode(self, w: &mut Writer, s: &mut S) {
                 }
             }
 
-            impl<S: server::Types> DecodeMut<'_, 's, HandleStore<server::MarkedTypes<S>>>
+            impl<'s, S: server::Types> DecodeMut<'_, 's, HandleStore<server::MarkedTypes<S>>>
                 for &'s mut Marked<S::$oty, $oty>
             {
                 fn decode(
diff --git a/library/proc_macro/src/bridge/mod.rs b/library/proc_macro/src/bridge/mod.rs
index 2df287f7d93..fbeb585095b 100644
--- a/library/proc_macro/src/bridge/mod.rs
+++ b/library/proc_macro/src/bridge/mod.rs
@@ -295,13 +295,13 @@ fn unmark(self) -> Self::Unmarked {
         self.value
     }
 }
-impl<T, M> Unmark for &'a Marked<T, M> {
+impl<'a, T, M> Unmark for &'a Marked<T, M> {
     type Unmarked = &'a T;
     fn unmark(self) -> Self::Unmarked {
         &self.value
     }
 }
-impl<T, M> Unmark for &'a mut Marked<T, M> {
+impl<'a, T, M> Unmark for &'a mut Marked<T, M> {
     type Unmarked = &'a mut T;
     fn unmark(self) -> Self::Unmarked {
         &mut self.value
@@ -356,8 +356,8 @@ fn unmark(self) -> Self::Unmarked {
     (),
     bool,
     char,
-    &'a [u8],
-    &'a str,
+    &'_ [u8],
+    &'_ str,
     String,
     usize,
     Delimiter,
diff --git a/library/proc_macro/src/bridge/rpc.rs b/library/proc_macro/src/bridge/rpc.rs
index 42432563faf..d50564d01a5 100644
--- a/library/proc_macro/src/bridge/rpc.rs
+++ b/library/proc_macro/src/bridge/rpc.rs
@@ -79,7 +79,7 @@ mod tag {
             }
         }
 
-        impl<S, $($($T: for<'s> DecodeMut<'a, 's, S>),+)?> DecodeMut<'a, '_, S>
+        impl<'a, S, $($($T: for<'s> DecodeMut<'a, 's, S>),+)?> DecodeMut<'a, '_, S>
             for $name $(<$($T),+>)?
         {
             fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
@@ -176,7 +176,7 @@ fn encode(self, w: &mut Writer, s: &mut S) {
     }
 }
 
-impl<S, A: for<'s> DecodeMut<'a, 's, S>, B: for<'s> DecodeMut<'a, 's, S>> DecodeMut<'a, '_, S>
+impl<'a, S, A: for<'s> DecodeMut<'a, 's, S>, B: for<'s> DecodeMut<'a, 's, S>> DecodeMut<'a, '_, S>
     for (A, B)
 {
     fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
@@ -213,7 +213,7 @@ fn encode(self, w: &mut Writer, s: &mut S) {
     }
 }
 
-impl<S> DecodeMut<'a, '_, S> for &'a [u8] {
+impl<'a, S> DecodeMut<'a, '_, S> for &'a [u8] {
     fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
         let len = usize::decode(r, s);
         let xs = &r[..len];
@@ -228,7 +228,7 @@ fn encode(self, w: &mut Writer, s: &mut S) {
     }
 }
 
-impl<S> DecodeMut<'a, '_, S> for &'a str {
+impl<'a, S> DecodeMut<'a, '_, S> for &'a str {
     fn decode(r: &mut Reader<'a>, s: &mut S) -> Self {
         str::from_utf8(<&[u8]>::decode(r, s)).unwrap()
     }
diff --git a/library/proc_macro/src/lib.rs b/library/proc_macro/src/lib.rs
index ef96d72a38b..69af598f91e 100644
--- a/library/proc_macro/src/lib.rs
+++ b/library/proc_macro/src/lib.rs
@@ -25,7 +25,6 @@
 #![feature(allow_internal_unstable)]
 #![feature(decl_macro)]
 #![feature(extern_types)]
-#![feature(in_band_lifetimes)]
 #![feature(negative_impls)]
 #![feature(auto_traits)]
 #![feature(restricted_std)]