Couldn't flash ubuntu touch devel to Nexus 4 (mako)

When flashing Ubuntu Touch devel, I got this error:

nicolas@darwin:~$ ubuntu-device-flash touch --channel=devel --bootstrap
2015/05/11 09:13:18 Expecting the device to be in the bootloader... waiting
2015/05/11 09:13:18 Device is |mako|
2015/05/11 09:13:18 Flashing version 2 from devel channel and server https://system-image.ubuntu.com to device mako
3.95 MB / 3.95 MB [=====================================================>_] 100.00 % 213.53 KB/s
44.79 MB / 44.79 MB [=====================================================] 100.00 % 385.49 KB/s
332.41 MB / 332.41 MB [===================================================] 100.00 % 646.94 KB/s
2015/05/11 09:22:24 Start pushing /home/nicolas/.cache/ubuntuimages/gpg/image-master.tar.xz to device
2015/05/11 09:22:24 Start pushing /home/nicolas/.cache/ubuntuimages/gpg/image-signing.tar.xz to device
2015/05/11 09:22:24 Start pushing /home/nicolas/.cache/ubuntuimages/ubuntu-touch/devel/mako/version-2.tar.xz to device
2015/05/11 09:22:24 Start pushing /home/nicolas/.cache/ubuntuimages/pool/custom-6d69386203f3e45348aba79e08b7176c38499e1da5a68af5d3fbabc2ac2b6cb2.tar.xz to device
2015/05/11 09:22:24 Start pushing /home/nicolas/.cache/ubuntuimages/pool/device-62e6cb43ab375213838c613fa66c73224920700ff1b2887b617a0c2b53ce00f2.tar.xz to device
2015/05/11 09:22:24 Start pushing /home/nicolas/.cache/ubuntuimages/pool/ubuntu-631ce387d6c729c3da0ae9177d0c9d9a07f3e0dfb15b21b20771079322915d20.tar.xz to device
2015/05/11 09:22:24 Done pushing /home/nicolas/.cache/ubuntuimages/gpg/image-master.tar.xz to device
2015/05/11 09:22:24 Done pushing /home/nicolas/.cache/ubuntuimages/gpg/image-signing.tar.xz to device
2015/05/11 09:22:24 Done pushing /home/nicolas/.cache/ubuntuimages/ubuntu-touch/devel/mako/version-2.tar.xz to device
2015/05/11 09:22:26 Done pushing /home/nicolas/.cache/ubuntuimages/pool/custom-6d69386203f3e45348aba79e08b7176c38499e1da5a68af5d3fbabc2ac2b6cb2.tar.xz to device
2015/05/11 09:22:35 Done pushing /home/nicolas/.cache/ubuntuimages/pool/device-62e6cb43ab375213838c613fa66c73224920700ff1b2887b617a0c2b53ce00f2.tar.xz to device
2015/05/11 09:23:42 error pushing: failed to copy '/home/nicolas/.cache/ubuntuimages/pool/ubuntu-631ce387d6c729c3da0ae9177d0c9d9a07f3e0dfb15b21b20771079322915d20.tar.xz' to '/cache/recovery//ubuntu-631ce387d6c729c3da0ae9177d0c9d9a07f3e0dfb15b21b20771079322915d20.tar.xz': I/O error

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubuntu-device-flash 0.20-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
Uname: Linux 3.19.0-16-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon May 11 09:29:02 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-03-30 (42 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150317.1)
SourcePackage: goget-ubuntu-touch
UpgradeStatus: No upgrade log present (probably fresh install)