Update to version 1.6.0; Fixes RHBZ#1977770

.gitignore

@@ -4,3 +4,4 @@
 /async-io-1.3.1.crate
 /async-io-1.4.0.crate
 /async-io-1.4.1.crate
+/async-io-1.6.0.crate

async-io-fix-metadata.diff

@@ -1,6 +1,6 @@
---- async-io-1.4.1/Cargo.toml	1970-01-01T00:00:00+00:00
+--- async-io-1.6.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ async-io-1.4.1/Cargo.toml	2021-04-28T19:48:02.861473+00:00
++++ async-io-1.6.0/Cargo.toml	2021-07-08T22:04:28.037562+00:00
-@@ -77,8 +77,3 @@
+@@ -74,8 +74,3 @@
  version = "1.1.1"
  [target."cfg(unix)".dependencies.libc]
  version = "0.2.77"

rust-async-io.spec

@@ -6,7 +6,7 @@
 %global crate async-io
 
 Name:           rust-%{crate}
-Version:        1.4.1
+Version:        1.6.0
 Release:        %autorelease
 Summary:        Async I/O and timers
 

sources

@@ -1 +1 @@
-SHA512 (async-io-1.4.1.crate) = c7381e16814920524e291b1e363fa72245e2dc47f7753cd10bbf505e7e993c50c81f0867d3bd41158f194cc3adf57e95304934b239d585780e6650a819f611f5
+SHA512 (async-io-1.6.0.crate) = 0451c6d53da593bc1753ab56c043d855d2642de5679265970ade0c63cef09268ac5b133100230637bf16506f475e322ffea2c85f8eaa3788a0bbe24ff7e671f5