Use single-depth grouped use for older rustc support (hopefully)
@@ -12,11 +12,8 @@ use std::iter::Peekable;
use pest::iterators::{Pair, Pairs};
use pest::prec_climber::{Assoc, Operator, PrecClimber};
-use pest::Span;
-use pest::{
- error::{Error, ErrorVariant},
- Parser
-};
+use pest::{Span, Parser};
+use pest::error::{Error, ErrorVariant};
use ast::{Expr, Rule as AstRule, RuleType};
use validator;
