starting phase `reset-gzip-timestamps'
Backtrace:
           8 (primitive-load "/gnu/store/qfnm23vcvhazw74srxfgvmdaylm…")
In ice-9/eval.scm:
   191:35  7 (_ _)
In srfi/srfi-1.scm:
   863:16  6 (every1 #<procedure 98b080 at /gnu/store/c897syb3j4cnf…> …)
In /gnu/store/c897syb3j4cnf03cxp7yr8kysclyprv1-module-import/guix/build/gnu-build-system.scm:
   684:27  5 (_ _)
    508:5  4 (reset-gzip-timestamps #:outputs _)
In srfi/srfi-1.scm:
    640:9  3 (for-each #<procedure process-directory (directory)> (#))
    640:9  2 (for-each #<procedure reset-gzip-timestamp (file #:key…> …)
In /gnu/store/c897syb3j4cnf03cxp7yr8kysclyprv1-module-import/guix/build/utils.scm:
   220:14  1 (reset-gzip-timestamp "/gnu/store/ypqdci6f0jljcwk3j2dd…" …)
In unknown file:
           0 (open "/gnu/store/ypqdci6f0jljcwk3j2dd6hsdcy7wzqy5-gol…" …)

ERROR: In procedure open:
ERROR: In procedure open-fdes: Permission denied
builder for `/gnu/store/kn372qznncz8f442x48hrij0k6v9f928-golang-org-x-crypto-bcrypt-20160912.e311231.drv' failed with exit code 1
@ build-failed /gnu/store/kn372qznncz8f442x48hrij0k6v9f928-golang-org-x-crypto-bcrypt-20160912.e311231.drv - 1 builder for `/gnu/store/kn372qznncz8f442x48hrij0k6v9f928-golang-org-x-crypto-bcrypt-20160912.e311231.drv' failed with exit code 1