On the Openismus Jenkins server (using glib from git master, on Ubuntu Quantal), "make check" fails on glib-networking from git master:

TEST: connection... (pid=15624)
  /tls/connection/basic:                                               OK
  /tls/connection/verified:                                            OK
  /tls/connection/client-auth:                                         OK
  /tls/connection/client-auth-rehandshake:                             **
GLib-Net:ERROR:connection.c:96:teardown_connection: assertion failed: (test->server_connection == NULL)
FAIL
GTester: last random seed: R02Saaee1c6dbf6e5f7a48133987cf07169d
/bin/bash: line 1: 15620 Terminated              gtester --verbose certificate file-database connection pkcs11-util pkcs11-array pkcs11-pin pkcs11-slot
make[2]: *** [test-nonrecursive] Error 143
make[2]: Leaving directory `/var/lib/jenkins/workspace/glib-networking/tls/tests'
make[1]: *** [check-am] Error 2
make[1]: Leaving directory `/var/lib/jenkins/workspace/glib-networking/tls/tests'
make: *** [check-recursive] Error 1
Build step 'Execute shell' marked build as failure
Archiving artifacts
Finished: FAILURE

You should be able to see the full build log here:
http://jenkins.openismus.com/job/glib-networking/8/console