Both error message and error code during installation are discarded #95
Description
Kernels 6.17.0 - 6.17.1 are unsupported on Ubuntu 25.04 but both the error message and error code are discarded.
Kernel is reported as installed but it's state is indeterminate:
$ sudo ./ubuntu-mainline-kernel.sh -i 6.17.1
[sudo] password for valentyn:
Downloading index from kernel.ubuntu.com
Will download 6 files from kernel.ubuntu.com:
Downloading amd64/linux-headers-6.17.1-061701-generic_6.17.1-061701.202510060945_amd64.deb: 100%
Downloading amd64/linux-headers-6.17.1-061701_6.17.1-061701.202510060945_all.deb: 100%
Downloading amd64/linux-image-unsigned-6.17.1-061701-generic_6.17.1-061701.202510060945_amd64.deb: 100%
Downloading amd64/linux-modules-6.17.1-061701-generic_6.17.1-061701.202510060945_amd64.deb: 100%
Downloading amd64/CHECKSUMS: 100%
Downloading amd64/CHECKSUMS.gpg: 100%
Signature of checksum file has been successfully verified
Checksums of deb files have been successfully verified with sha256sum
Installing 4 packages
Cleaning up work folder
$ ./ubuntu-mainline-kernel.sh -l
v6.17.1-061701