bug#33542: Strange tarball download error on Hydra

[Mark H Weaver <mhw@netris.org>]

On Hydra, the armhf builds for al variants of 'linux-libre-4.14.84'
failed because the tarball download failed.  See below for the build
log.  Strangely, it was unable to find the (guix base16) module.

Any idea what went wrong here?

I'll try restarting the builds.

      Mark

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@ build-started /gnu/store/p1gqqw2jly5aizkz0d41a4gi9prxmx8m-linux-libre-4.14.84-gnu.tar.xz.drv - armhf-linux /var/log/guix/drvs/p1//gqqw2jly5aizkz0d41a4gi9prxmx8m-linux-libre-4.14.84-gnu.tar.xz.drv.bz2
warning: failed to install locale: Invalid argument
Backtrace:
In ice-9/boot-9.scm:
4056: 19 [#<procedure 205c80 at ice-9/boot-9.scm:4051:3 ()>]
1727: 18 [%start-stack load-stack #<procedure 1571c0 at ice-9/boot-9.scm:4047:10 ()>]
1732: 17 [#<procedure 1d9d50 ()>]
In unknown file:
   ?: 16 [primitive-load "/gnu/store/hkzbag401s8pkrj6k4bjizy3dybqffp4-guix-0.12.0-2.b291/bin/.guix-real"]
In guix/ui.scm:
1222: 15 [run-guix-command perform-download ...]
In ice-9/boot-9.scm:
 160: 14 [catch srfi-34 #<procedure 896890 at guix/ui.scm:426:2 ()> ...]
 160: 13 [catch system-error ...]
In guix/scripts/perform-download.scm:
  69: 12 [perform-download #]
In ice-9/boot-9.scm:
 870: 11 [call-with-input-file "/gnu/store/wxbfbsf53bdvrq1s8h086d96ixa7d47s-content-addressed-mirrors" ...]
In unknown file:
   ?: 10 [eval (begin (use-modules # #) (list # # #)) #<module (#{ g961}#) 893288>]
In ice-9/eval.scm:
 505: 9 [#<procedure 13b220 at ice-9/eval.scm:499:4 (exp)> (begin # #)]
In ice-9/psyntax.scm:
1106: 8 [expand-top-sequence ((begin (use-modules # #) (list # # ...))) () ...]
 989: 7 [scan ((begin (use-modules # #) (list # # ...))) () ...]
 989: 6 [scan ((use-modules # #) (list # # #)) () ((top)) ...]
 279: 5 [scan ((# #) #(syntax-object *unspecified* # #)) () (()) ...]
In ice-9/boot-9.scm:
3589: 4 [process-use-modules (((guix base32)) ((guix base16)))]
 703: 3 [map #<procedure 1c0cc0 at ice-9/boot-9.scm:3589:25 (mif-args)> ((#) (#))]
3590: 2 [#<procedure 1c0cc0 at ice-9/boot-9.scm:3589:25 (mif-args)> ((guix base16))]
2870: 1 [resolve-interface (guix base16) #:select ...]
In unknown file:
   ?: 0 [scm-error misc-error #f "~A ~S" ("no code for module" (guix base16)) #f]

ERROR: In procedure scm-error:
ERROR: no code for module (guix base16)
builder for `/gnu/store/p1gqqw2jly5aizkz0d41a4gi9prxmx8m-linux-libre-4.14.84-gnu.tar.xz.drv' failed with exit code 1
@ build-failed /gnu/store/p1gqqw2jly5aizkz0d41a4gi9prxmx8m-linux-libre-4.14.84-gnu.tar.xz.drv - 1 builder for `/gnu/store/p1gqqw2jly5aizkz0d41a4gi9prxmx8m-linux-libre-4.14.84-gnu.tar.xz.drv' failed with exit code 1
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