Comment 1 for bug 941784

From the corresponding slave init log (slave-i-6942a70d.log):

Get:51 http://us-east-1.ec2.archive.ubuntu.com.s3.amazonaws.com/ubuntu/ natty/main uuid-dev amd64 2.17.2-9.1ubuntu4 [28.3 kB]
Failed to fetch http://us-east-1.ec2.archive.ubuntu.com.s3.amazonaws.com/ubuntu/pool/main/libx/libxdmcp/libxdmcp-dev_1.1.0-1ubuntu1_amd64.deb Size mismatch
Failed to fetch http://us-east-1.ec2.archive.ubuntu.com.s3.amazonaws.com/ubuntu/pool/main/x/x11proto-input/x11proto-input-dev_2.0.1-1ubuntu1_all.deb Size mismatch
Failed to fetch http://us-east-1.ec2.archive.ubuntu.com.s3.amazonaws.com/ubuntu/pool/main/x/x11proto-kb/x11proto-kb-dev_1.0.5-1_all.deb Size mismatch
Failed to fetch http://us-east-1.ec2.archive.ubuntu.com.s3.amazonaws.com/ubuntu/pool/main/libx/libxcb/libxcb1-dev_1.7-2ubuntu2_amd64.deb Size mismatch
Failed to fetch http://us-east-1.ec2.archive.ubuntu.com.s3.amazonaws.com/ubuntu/pool/main/libx/libx11/libx11-dev_1.4.2-1ubuntu3_amd64.deb Size mismatch
Fetched 95.3 MB in 26s (3,646 kB/s)
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Command exited with non-zero status 100
14.69user 10.20system 1:09.70elapsed 35%CPU (0avgtext+0avgdata 103344maxresident)k
33304inputs+1299864outputs (331major+1445498minor)pagefaults 0swaps
Verifying that java exists
java full version "1.6.0_26-b03"
Copying slave.jar
Launching slave agent