BleachBit Errors

When I run BleachBit there are errors listed at the end the run:-

Disk space recovered: 87.7MB
Files deleted: 2076
Special operations: 61
Errors: 487

Here a few of the errors:-

[Errno 13] Permission denied: '/var/cache/apt/archives/linux-headers-3.2.0-89-generic-pae_3.2.0-89.127_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/google-chrome-stable_44.0.2403.155-1_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/linux-libc-dev_3.2.0-89.127_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/linux-headers-3.2.0-90-generic_3.2.0-90.128_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/linux-headers-3.2.0-89-generic_3.2.0-89.127_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/firefox_40.0+build4-0ubuntu0.12.04.1_i386.deb'

[Errno 13] Permission denied: '/var/cache/apt/archives/apt-utils_0.8.16~exp12ubuntu10.26_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/ghostscript_9.05~dfsg-0ubuntu4.3_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/google-chrome-stable_44.0.2403.125-1_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/libapt-inst1.4_0.8.16~exp12ubuntu10.25_i386.deb'
[Errno 13] Permission denied: '/var/cache/apt/archives/libgail-common_2.24.10-0ubuntu6.2_i386.deb'

Could anyone advise me if I should do anything about these errors?

many thanks for any help.

Rich.b