package mercurial 2.8.2-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10

when i install spyder， there is a Error in function: Setting up mercurial (2.8.2-1ubuntu1) ... dpkg: error processing package mercurial (--configure): subprocess installed post-installation script returned error exit status 10

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: mercurial 2.8.2-1ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
Date: Mon Apr 27 13:54:41 2015
DuplicateSignature: package:mercurial:2.8.2-1ubuntu1:subprocess installed post-installation script returned error exit status 10
ErrorMessage: subprocess installed post-installation script returned error exit status 10
InstallationDate: Installed on 2015-04-24 (3 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: mercurial
Title: package mercurial 2.8.2-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10
UpgradeStatus: No upgrade log present (probably fresh install)