proc-macro-error -> proc-macro-error2

fix #67

Author: tao-guo

macros/Cargo.toml

@@ -13,10 +13,10 @@ edition = "2018"
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0", features = ["full"] }
-quote = "1.0"
-proc-macro2 = "1.0"
-proc-macro-error = "1.0"
+syn = { version = "2", features = ["full"] }
+quote = "1"
+proc-macro2 = "1"
+proc-macro-error2 = "2"
 
 [dev-dependencies]
 cmd_lib = { path = ".." }

macros/src/lexer.rs

@@ -1,6 +1,6 @@
 use crate::parser::{ParseArg, Parser};
 use proc_macro2::{token_stream, Delimiter, Ident, Literal, Span, TokenStream, TokenTree};
-use proc_macro_error::abort;
+use proc_macro_error2::abort;
 use quote::quote;
 use std::ffi::OsString;
 use std::iter::Peekable;

macros/src/lib.rs

@@ -1,5 +1,5 @@
 use proc_macro2::{TokenStream, TokenTree};
-use proc_macro_error::{abort, proc_macro_error};
+use proc_macro_error2::{abort, proc_macro_error};
 use quote::quote;
 
 /// Mark main function to log error result by default.