ra_syntax fails to compile with rustc 1.31.0-nightly (96064eb 2018-10-28)

[kjeremy]

See rust-lang/rust#55475

[alanhdu]

Not sure how much this helps, but the following diff makes this ICE go away.

diff --git a/crates/ra_syntax/src/grammar/expressions/mod.rs b/crates/ra_syntax/src/grammar/expressions/mod.rs
index 60c8602..38dc518 100644
--- a/crates/ra_syntax/src/grammar/expressions/mod.rs
+++ b/crates/ra_syntax/src/grammar/expressions/mod.rs
@@ -1,7 +1,7 @@
 mod atom;
 
 pub(crate) use self::atom::match_arm_list;
-pub(super) use self::atom::{literal, LITERAL_FIRST};
+pub(super) use self::atom::LITERAL_FIRST;
 use super::*;
 
 const EXPR_FIRST: TokenSet = LHS_FIRST;
diff --git a/crates/ra_syntax/src/grammar/patterns.rs b/crates/ra_syntax/src/grammar/patterns.rs
index 10fa0e0..3f61886 100644
--- a/crates/ra_syntax/src/grammar/patterns.rs
+++ b/crates/ra_syntax/src/grammar/patterns.rs
@@ -49,9 +49,6 @@ fn atom_pat(p: &mut Parser, recovery_set: TokenSet) -> Option<CompletedMarker> {
     //         "hello" => (),
     //     }
     // }
-    if let Some(m) = expressions::literal(p) {
-        return Some(m);
-    }
 
     let m = match la0 {
         UNDERSCORE => placeholder_pat(p),

[DJMcNab]

I think this was fixed by rust-lang/rust#56143. It builds on 1.31 on stable anyway.