Replace lazy_static with once_cell

refinery_core/Cargo.toml

@@ -19,8 +19,8 @@ mysql_async = ["dep:mysql_async"]
 [dependencies]
 async-trait = "0.1"
 cfg-if = "1.0"
-lazy_static = "1"
 log = "0.4"
+once_cell = "1"
 regex = "1"
 serde = { version = "1", features = ["derive"] }
 siphasher = "1.0"

refinery_core/src/runner.rs

@@ -1,3 +1,4 @@
+use once_cell::sync::Lazy;
 use regex::Regex;
 use siphasher::sip::SipHasher13;
 use time::OffsetDateTime;
@@ -16,9 +17,7 @@ pub fn file_match_re() -> Regex {
     Regex::new(r"^([U|V])(\d+(?:\.\d+)?)__(\w+)").unwrap()
 }
 
-lazy_static::lazy_static! {
-    static ref RE: regex::Regex = file_match_re();
-}
+pub(crate) static RE: Lazy<regex::Regex> = Lazy::new(file_match_re);
 
 /// An enum set that represents the type of the Migration
 #[derive(Clone, PartialEq)]

refinery_core/src/util.rs

@@ -1,12 +1,12 @@
 use crate::error::{Error, Kind};
+use once_cell::sync::Lazy;
 use regex::Regex;
 use std::ffi::OsStr;
 use std::path::{Path, PathBuf};
 use walkdir::{DirEntry, WalkDir};
 
-lazy_static::lazy_static! {
-    static ref RE: regex::Regex = Regex::new(r"^(U|V)(\d+(?:\.\d+)?)__\w+\.(rs|sql)$").unwrap();
-}
+pub(crate) static RE: Lazy<regex::Regex> =
+    Lazy::new(|| Regex::new(r"^(U|V)(\d+(?:\.\d+)?)__\w+\.(rs|sql)$").unwrap());
 
 /// enum containing the migration types used to search for migrations
 /// either just .sql files or both .sql and .rs