Bug 1574056 - Make `mach vendor rust` use now native `cargo vendor`. r=chmanchester

Note that cargo vendor always uses the native version even when
cargo-vendor was already installed, so there is no concern wrt that.

Differential Revision: https://phabricator.services.mozilla.com/D43007

--HG--
extra : moz-landing-system : lando

python/mozbuild/mozbuild/vendor_rust.py

@@ -34,31 +34,13 @@ class VendorRust(MozbuildObject):
 
     def check_cargo_version(self, cargo):
         '''
-        Ensure that cargo is new enough. cargo 0.12 added support
-        for source replacement, which is required for vendoring to work.
+        Ensure that cargo is new enough. cargo 1.37 added support
+        for the vendor command.
         '''
         out = subprocess.check_output([cargo, '--version']).splitlines()[0]
         if not out.startswith('cargo'):
             return False
-        return LooseVersion(out.split()[1]) >= b'0.13'
-
-    def check_cargo_vendor_version(self, cargo):
-        '''
-        Ensure that cargo-vendor is new enough. cargo-vendor 0.1.13 and newer
-        strips out .cargo-ok, .orig and .rej files, and deals with [patch]
-        replacements in Cargo.toml files which we want.  Version 0.1.14 and up
-        handles local modifications to vendored crates (bug 1323557).
-        '''
-        for l in subprocess.check_output([cargo, 'install', '--list']).splitlines():
-            # The line looks like one of the following:
-            #  cargo-vendor v0.1.12:
-            #  cargo-vendor v0.1.12 (file:///path/to/local/build/cargo-vendor):
-            # and we want to extract the version part of it
-            m = re.match('cargo-vendor v((\d+\.)*\d+)', l)
-            if m:
-                version = m.group(1)
-                return LooseVersion(version) >= b'0.1.23'
-        return False
+        return LooseVersion(out.split()[1]) >= b'1.37'
 
     def check_modified_files(self):
         '''
@@ -115,30 +97,10 @@ Please commit or stash these changes before vendoring, or re-run with `--ignore-
         cargo = self.get_cargo_path()
         if not self.check_cargo_version(cargo):
             self.log(logging.ERROR, 'cargo_version', {},
-                     'Cargo >= 0.13 required (install Rust 1.12 or newer)')
+                     'Cargo >= 1.37 required (install Rust 1.37 or newer)')
             return None
         else:
             self.log(logging.DEBUG, 'cargo_version', {}, 'cargo is new enough')
-        have_vendor = any(l.strip() == 'vendor' for l in subprocess.check_output(
-            [cargo, '--list']).splitlines())
-        if not have_vendor:
-            self.log(logging.INFO, 'installing', {},
-                     'Installing cargo-vendor (this may take a few minutes)...')
-            env = self.check_openssl()
-            self.run_process(args=[cargo, 'install', 'cargo-vendor'],
-                             append_env=env)
-        elif not self.check_cargo_vendor_version(cargo):
-            self.log(
-                logging.INFO, 'cargo_vendor', {},
-                ('cargo-vendor >= 0.1.23 required; '
-                 'force-reinstalling (this may take a few minutes)...')
-                )
-            env = self.check_openssl()
-            self.run_process(args=[cargo, 'install', '--force', 'cargo-vendor'],
-                             append_env=env)
-        else:
-            self.log(logging.DEBUG, 'cargo_vendor', {},
-                     'sufficiently new cargo-vendor is already installed')
 
         return cargo
 
@@ -360,8 +322,7 @@ license file's hash.
         # changes. See bug 1324462
         subprocess.check_call([cargo, 'update', '-p', 'gkrust'], cwd=self.topsrcdir)
 
-        subprocess.check_call([cargo, 'vendor', '--quiet', '--sync',
-                               'Cargo.lock'] + [vendor_dir], cwd=self.topsrcdir)
+        subprocess.check_call([cargo, 'vendor', '--quiet', vendor_dir], cwd=self.topsrcdir)
 
         if not self._check_licenses(vendor_dir):
             self.log(