Merge pull request #1173 from ehuss/edition

Update to 2021 edition

Author: ehuss

Cargo.toml

@@ -13,7 +13,7 @@ both threadsafe and memory safe and allows both reading and writing git
 repositories.
 """
 categories = ["api-bindings"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 url = "2.5.4"

git2-curl/Cargo.toml

@@ -10,7 +10,7 @@ Backend for an HTTP transport in libgit2 powered by libcurl.
 
 Intended to be used with the git2 crate.
 """
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 curl = "0.4.33"

libgit2-sys/Cargo.toml

@@ -14,7 +14,7 @@ exclude = [
     "libgit2/fuzzers/*",
     "libgit2/tests/*",
 ]
-edition = "2018"
+edition = "2021"
 
 [lib]
 name = "libgit2_sys"

systest/Cargo.toml

@@ -3,7 +3,7 @@ name = "systest"
 version = "0.1.0"
 authors = ["Alex Crichton <[email protected]>"]
 build = "build.rs"
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 libgit2-sys = { path = "../libgit2-sys", features = ['https', 'ssh'] }