downgrade walkdir

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

rust-syn.spec

@@ -13,9 +13,6 @@ Summary:        Nom parser for Rust source code
 License:        MIT or ASL 2.0
 URL:            https://crates.io/crates/syn
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
-# Initial patched metadata
-# * Bump walkdir to 2, https://github.com/dtolnay/syn/pull/371
-Patch0:         syn-0.12.14-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
@@ -27,7 +24,7 @@ BuildRequires:  (crate(unicode-xid) >= 0.1.0 with crate(unicode-xid) < 0.2.0)
 %if %{with check}
 # [dev-dependencies]
 BuildRequires:  (crate(rayon) >= 1.0.0 with crate(rayon) < 2.0.0)
-BuildRequires:  (crate(walkdir) >= 2.0.0 with crate(walkdir) < 3.0.0)
+BuildRequires:  (crate(walkdir) >= 1.0.1 with crate(walkdir) < 2.0.0)
 %endif
 
 %description

syn-0.12.14-fix-metadata.diff

@@ -1,11 +0,0 @@
---- syn-0.12.14/Cargo.toml	1970-01-01T01:00:00+01:00
-+++ syn-0.12.14/Cargo.toml	2018-03-09T14:43:09.449662+01:00
-@@ -40,7 +40,7 @@
- version = "1.0.0"
- 
- [dev-dependencies.walkdir]
--version = "1.0.1"
-+version = "2"
- 
- [features]
- clone-impls = []