When installing a larger package like net_unittests, media_unittests, or content_shell, QEMU generates an error that suggests that the blobstore is out of space and can't be resized. As a result these suites can't be executed in the emulator.
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[00031.552] 03097.16456> pkgsvr: 2018/03/15 20:39:50 pkgfs: wrote "7ec638b369527f2eea15dbfd797f8e29821db1424750446da3fecf3b668e55ea" to blob "7ec638b369527f2eea15dbfd797f8e29821db1424750446da3fecf3b668e55ea"
[00031.610] 03097.16456> pkgsvr: 2018/03/15 20:39:50 pkgfs: wrote "81083e18d8c21930316204e536b1bc562d9a1d6e803d84ea71dfae969b1c08ce" to blob "81083e18d8c21930316204e536b1bc562d9a1d6e803d84ea71dfae969b1c08ce"
[00031.655] 03097.16456> pkgsvr: 2018/03/15 20:39:50 pkgfs: wrote "814656064a0c3be9c960e728a683f99177cc74a675b40ec5ac3e2736a025f39c" to blob "814656064a0c3be9c960e728a683f99177cc74a675b40ec5ac3e2736a025f39c"
[00031.679] 02994.03017> Blobfs::AddBlocks FVM Extend failure