Seems like test 3 is timeouting on all architecture:
2/21 Test #2: build/filesystemscannertest ...... Passed 0.39 sec
test 3
Start 3: auto/filesystemscannertest
3: Test command: /build/buildd/mediascanner-0.3.93+14.04.20131023/obj-i686-linux-gnu/tests/auto/filesystemscannertest
3: Test timeout computed to be: 9.99988e+06
3: [==========] Running 2 tests from 1 test case.
3: [----------] Global test environment set-up.
3: filesystemscannertest[22092]: INFO info/index: Opening media index index at ""/build/buildd/mediascanner-0.3.93+14.04.20131023/obj-i686-linux-gnu/tests/run/filesystemscannertest/index"".
3: filesystemscannertest[22092]: INFO info/index: Opening child index for ""/build/buildd/mediascanner-0.3.93+14.04.20131023/tests/media"" at ""/build/buildd/mediascanner-0.3.93+14.04.20131023/obj-i686-linux-gnu/tests/run/filesystemscannertest/index""
3: [----------] 2 tests from FileSystemScannerTest
3: [ RUN ] FileSystemScannerTest.Test
3: filesystemscannertest[22092]: INFO info/metadata: Using "grl-tmdb" from "/build/buildd/mediascanner-0.3.93+14.04.20131023/obj-i686-linux-gnu/tests/plugins/libgrltmdb.so" to resolve metadata.
3: filesystemscannertest[22092]: INFO info/fs-scanner: Starting to monitor "/build/buildd/mediascanner-0.3.93+14.04.20131023/tests/media" mounted at "/"
3: filesystemscannertest[22092]: INFO info/index: Opening media index index at ""/build/buildd/mediascanner-0.3.93+14.04.20131023/obj-i686-linux-gnu/tests/run/filesystemscannertest/index"".
3: filesystemscannertest[22092]: INFO info/index: Opening child index for ""/build/buildd/mediascanner-0.3.93+14.04.20131023/tests/media"" at ""/build/buildd/mediascanner-0.3.93+14.04.20131023/obj-i686-linux-gnu/tests/run/filesystemscannertest/index""
3: filesystemscannertest[22092]: INFO info/fs-walker: Scanning "/build/buildd/mediascanner-0.3.93+14.04.20131023/tests/media" using media index at ""/build/buildd/mediascanner-0.3.93+14.04.20131023/obj-i686-linux-gnu/tests/run/filesystemscannertest/index""
3: filesystemscannertest[22092]: INFO info/fs-walker: Scanning directory "/build/buildd/mediascanner-0.3.93+14.04.20131023/tests/media"
3: filesystemscannertest[22092]: WARNING warning/metadata: Metadata resolving task 1@grl-tmdb failed: grilo.error.general(5): Could not find mock content Key file does not have group 'http://api.themoviedb.org/3/configuration?api_key=fakekey'
3: filesystemscannertest[22092]: INFO info/fs-walker: Finished scanning directories below "/build/buildd/mediascanner-0.3.93+14.04.20131023/tests/media".
3: filesystemscannertest[22092]: INFO info/metadata: Waiting for pending metadata resolvers.
3: /build/buildd/mediascanner-0.3.93+14.04.20131023/tests/auto/filesystemscannertest.cpp:92: Failure
3: Value of: timeout_reached_
3: Actual: true
3: Expected: false
3: /build/buildd/mediascanner-0.3.93+14.04.20131023/tests/auto/filesystemscannertest.cpp:195: Failure
3: Value of: resolver->is_idle()
3: Actual: false
3: Expected: true
More information at https://launchpadlibrarian.net/154765847/buildlog_ubuntu-trusty-i386.mediascanner_0.3.93%2B14.04.20131023-0ubuntu1_FAILEDTOBUILD.txt.gz
Fix committed into lp:mediascanner at revision 397, scheduled for release in mediascanner, milestone Unknown