diff --git a/src/imports.rs b/src/imports.rs
index 4a1370e98cb..a59d7519e2a 100644
--- a/src/imports.rs
+++ b/src/imports.rs
@@ -1110,7 +1110,7 @@ impl Rewrite for UseSegment {
                     use_tree_list,
                     // 1 = "{" and "}"
                     shape
-                        .offset_left(1)
+                        .offset_left_opt(1)
                         .unknown_error()?
                         .saturating_sub_width(1),
                 )?
@@ -1160,7 +1160,7 @@ impl Rewrite for UseTree {
                         s.clone()
                     }
                 } else {
-                    let Some(ret) = shape.offset_left(rewritten_segment.len()) else {
+                    let Some(ret) = shape.offset_left_opt(rewritten_segment.len()) else {
                         return Err(RewriteError::ExceedsMaxWidth {
                             configured_width: shape.width,
                             span: span.clone(),
@@ -1168,7 +1168,7 @@ impl Rewrite for UseTree {
                     };
                     // Check that there is a room for the next "{". If not, return an error for
                     // retry with newline.
-                    if ret.offset_left(reserved_room_for_brace).is_none() {
+                    if ret.offset_left_opt(reserved_room_for_brace).is_none() {
                         return Err(RewriteError::ExceedsMaxWidth {
                             configured_width: shape.width,
                             span: span.clone(),
@@ -1221,7 +1221,7 @@ impl Rewrite for UseTree {
                     result.push_str("::");
                     // 2 = "::"
                     shape = shape
-                        .offset_left(2 + segment_str.len())
+                        .offset_left_opt(2 + segment_str.len())
                         .max_width_error(shape.width, self.span())?;
                 }
             }
diff --git a/src/shape.rs b/src/shape.rs
index 5b2161b4ce8..d753b8e0402 100644
--- a/src/shape.rs
+++ b/src/shape.rs
@@ -293,14 +293,6 @@ impl Shape {
         }
     }
 
-    pub(crate) fn shrink_left(&self, width: usize) -> Option<Shape> {
-        Some(Shape {
-            width: self.width.checked_sub(width)?,
-            indent: self.indent + width,
-            offset: self.offset + width,
-        })
-    }
-
     pub(crate) fn offset_left_opt(&self, delta: usize) -> Option<Shape> {
         self.add_offset(delta).sub_width_opt(delta)
     }