Remove failure from grit binary, too

Cargo.toml

@@ -13,10 +13,9 @@ test = false
 doctest = false
 
 [dependencies]
-failure = "0.1.1"
-failure-tools = "4.0.2"
 clap = "2.31.2"
 git-core = { version = "0.1.0", path = "git-core" }
+anyhow = "1.0.31"
 
 [profile.release]
 panic = 'unwind'

src/main.rs

@@ -1,11 +1,7 @@
-extern crate failure;
-extern crate failure_tools;
 #[macro_use]
 extern crate clap;
 extern crate git_core as git;
-
-use failure::{Error, ResultExt};
-use failure_tools::ok_or_exit;
+use anyhow::{Context, Result};
 
 mod app {
     use clap::{App, AppSettings, SubCommand};
@@ -20,18 +16,14 @@ mod app {
     }
 }
 
-fn run() -> Result<(), Error> {
+fn main() -> Result<()> {
     let app = app::new();
     let matches = app.get_matches();
     match matches.subcommand() {
         ("init", Some(_args)) => {
-            git::init::repository().with_context(|_| "Repository initialization failed")
+            git::init::repository().with_context(|| "Repository initialization failed")
         }
         _ => unreachable!(),
-    }
-    .map_err(Into::into)
-}
-
-fn main() {
-    ok_or_exit(run())
+    }?;
+    Ok(())
 }

tests/snapshots/cli/init-fail

@@ -1,3 +1,4 @@
-error: Repository initialization failed
-Caused by: 
- 1: Refusing to initialize the existing '.git' directory
+Error: Repository initialization failed
+
+Caused by:
+    Refusing to initialize the existing '.git' directory