Duplicate crate check no longer reports crate names

[jdm]

Checking files for tidiness...
./Cargo.lock:1: duplicate versions for package `mach`
	The following packages depend on version 0.2.3 from 'crates.io':
	The following packages depend on version 0.3.2 from 'crates.io':
./Cargo.lock:1: duplicate versions for package `nix`
	The following packages depend on version 0.14.1 from 'crates.io':
	The following packages depend on version 0.15.0 from 'crates.io':

I suspect this is a regression from the python3 changes.

[jdm]

servo/python/tidy/servo_tidy/tidy.py

Lines 378 to 399 in 0131952

	for (name, packages) in iteritems(packages_by_name):
	has_duplicates = len(packages) > 1
	duplicates_allowed = name in exceptions
	if has_duplicates == duplicates_allowed:
	continue
	if duplicates_allowed:
	message = 'duplicates for `{}` are allowed, but only single version found'.format(name)
	else:
	message = "duplicate versions for package `{}`".format(name)
	packages.sort()
	packages_dependencies = list(find_reverse_dependencies(name, content))
	for version, source in packages:
	short_source = source.split("#")[0].replace("git+", "")
	message += "\n\t\033[93mThe following packages depend on version {} from '{}':\033[0m" \
	.format(version, short_source)
	for name, dependency in packages_dependencies:
	if version in dependency and short_source in dependency:
	message += "\n\t\t" + name
	yield (1, message)

[jdm]

On the other hand, it's possible this has been broken since #24334, which would mean that

servo/python/tidy/servo_tidy/tidy.py

Lines 351 to 355 in 0131952

	def find_reverse_dependencies(name, content):
	for package in itertools.chain([content.get("root", {})], content["package"]):
	for dependency in package.get("dependencies", []):
	if dependency.startswith("{} ".format(name)):
	yield package["name"], dependency

is broken for some reason.