From b4376a0dd98557fcca9da7042bc5fb095191e5ce Mon Sep 17 00:00:00 2001
From: Rob Bradford <rbradford@rivosinc.com>
Date: Wed, 5 Jul 2023 09:20:58 +0100
Subject: [PATCH] build: Bump proc-macro2 crate to fix nightly builds

error[E0635]: unknown feature `proc_macro_span_shrink`
  --> $HOME/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/src/lib.rs:92:30
   |
92 |     feature(proc_macro_span, proc_macro_span_shrink)
   |

Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
---
 Cargo.lock | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index f83e3de1d..685e15b79 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1442,9 +1442,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.59"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6aeca18b86b413c660b781aa319e4e2648a3e6f9eadc9b47e9038e6fe9f3451b"
+checksum = "7b368fba921b0dce7e60f5e04ec15e565b3303972b42bcfde1d0713b881959eb"
 dependencies = [
  "unicode-ident",
 ]