Bump BSRV to 1.70.

We can now upgrade to clap 4.4 and remove the is-terminal dependency.

.github/workflows/rust.yml

@@ -60,12 +60,12 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        toolchain: [1.73.0, 1.66.0]
+        toolchain: [1.73.0, 1.70.0]
         include:
           - os: windows-latest
             toolchain: 1.73.0-x86_64-pc-windows-gnu
           - os: windows-latest
-            toolchain: 1.66.0-x86_64-pc-windows-gnu
+            toolchain: 1.70.0-x86_64-pc-windows-gnu
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3

Cargo.toml

@@ -10,7 +10,7 @@ authors = ["Mike Hommey <[email protected]>"]
 edition = "2021"
 license = "MPL-2.0 AND GPL-2.0"
 repository = "https://github.com/glandium/git-cinnabar"
-rust-version = "1.66.0"
+rust-version = "1.70.0"
 include = [
   "/src",
   "/build.rs",
@@ -44,7 +44,6 @@ git-version = "0.3"
 hex = "0.4"
 hex-literal = "0.4"
 indexmap = "2"
-is-terminal = "0.4"
 itertools = "0.11"
 libc = "0.2"
 once_cell = "1.13"
@@ -62,7 +61,7 @@ default-features = false
 features = ["std"]
 
 [dependencies.clap]
-version = "4.0,<4.4"  # Avoid MSRV bump to 1.70.
+version = "4.0"
 features = ["cargo", "derive"]
 
 [target.'cfg(windows)'.dependencies.curl-sys]

README.md

@@ -38,7 +38,7 @@ Requirements:
 
 - Git (any version should work ; cinnabarclone bundles require 1.4.4).
 - In order to build from source:
-  - Rust 1.66.0 or newer.
+  - Rust 1.70.0 or newer.
   - GCC or clang.
 
 Setup:

src/main.rs

@@ -86,7 +86,7 @@ use std::ffi::CString;
 use std::ffi::{CStr, OsStr, OsString};
 use std::fs::File;
 use std::hash::Hash;
-use std::io::{stdin, stdout, BufRead, BufWriter, Write};
+use std::io::{stdin, stdout, BufRead, BufWriter, IsTerminal, Write};
 use std::iter::repeat;
 use std::os::raw::{c_char, c_int, c_void};
 #[cfg(windows)]
@@ -106,7 +106,6 @@ use cinnabar::{
 use cstr::cstr;
 use git::{BlobId, CommitId, GitObjectId};
 use git_version::git_version;
-use is_terminal::IsTerminal;
 
 use graft::{graft_finish, grafted, init_graft};
 use hg::{HgChangesetId, HgFileId, HgManifestId, ManifestEntry};