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-rw-r--r--src/libsyntax_ext/assert.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/libsyntax_ext/assert.rs b/src/libsyntax_ext/assert.rs
index 235565314f5..b10d8fcd357 100644
--- a/src/libsyntax_ext/assert.rs
+++ b/src/libsyntax_ext/assert.rs
@@ -3,7 +3,6 @@ use errors::{Applicability, DiagnosticBuilder};
 use syntax::ast::{self, *};
 use syntax::source_map::Spanned;
 use syntax::ext::base::*;
-use syntax::ext::build::AstBuilder;
 use syntax::parse::token::{self, TokenKind};
 use syntax::parse::parser::Parser;
 use syntax::print::pprust;