set MSRV to 1.60

Signed-off-by: Petre Eftime <[email protected]>

Author: petreeftime

Cargo.toml

@@ -10,8 +10,7 @@ license     = "MIT"
 categories  = ["os::unix-apis"]
 keywords    = ["pty", "automation", "testing", "expect", "pexpect"]
 readme      = "README.md"
-
-
+rust-version = "1.60"
 
 [dependencies]
 comma = "1.0"

README.md

@@ -3,6 +3,7 @@
 [![crates.io](https://img.shields.io/crates/v/rexpect.svg)](https://crates.io/crates/rexpect)
 [![Released API docs](https://docs.rs/rexpect/badge.svg)](https://docs.rs/rexpect)
 [![Master API docs](https://img.shields.io/badge/docs-master-2f343b.svg)](http://philippkeller.github.io/rexpect)
+[![MSRV](https://img.shields.io/badge/MSRV-1.60.0-blue)]
 
 Spawn, control, and respond to expected patterns of child applications and
 processes, enabling the automation of interactions and testing. Components