bug#40316: core-updates nss not reproducible

[Bone Baboon]

I am also getting the same four files that are not reproducible for nss
on the master branch.

As nss is also not reproducible on master maybe the title of this bug
should be changed to "nss not reproducible".

`guix describe` outputs:

```
Generation 24   May 12 2021 18:06:24    (current)
  guix d6aeebb
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: d6aeebb23639258311fdfb9dbf5f903079fde51a
```

`guix challenge /gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59`
outputs:

```
/gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59 contents differ:
  local hash: 0pqq1v88yjj80sll4j4ahfh52zzqhvkjv3vgkhmnnikvl6vd5sck
  https://ci.guix.gnu.org/nar/lzip/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59: 
1smx41irpiy9kly3zvr0d61x7hwm0haggvyii34byzfypca1xn2f
differing files:
    /lib/nss/libfreebl3.chk
    /lib/nss/libsoftokn3.chk
    /lib/nss/libfreeblpriv3.chk
    /lib/nss/libnssdbm3.chk

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive
```

`guix challenge --diff=diffoscope
/gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59` outputs:

```
/gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59 contents differ:
  local hash: 0pqq1v88yjj80sll4j4ahfh52zzqhvkjv3vgkhmnnikvl6vd5sck
  https://ci.guix.gnu.org/nar/lzip/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59: 
1smx41irpiy9kly3zvr0d61x7hwm0haggvyii34byzfypca1xn2f
--- /tmp/guix-directory.jSGCMh
+++ /gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59
│   --- /tmp/guix-directory.jSGCMh/lib
├── +++ /gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59/lib
│ │   --- /tmp/guix-directory.jSGCMh/lib/nss
│ ├── +++ /gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59/lib/nss
│ │ │   --- /tmp/guix-directory.jSGCMh/lib/nss/libfreebl3.chk
│ │ ├── +++ 
/gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59/lib/nss/libfreebl3.chk
│ │ │┄ xxd not available in path. Falling back to Python hexlify.
│ │ │ @@ -11,19 +11,19 @@
│ │ │  5c80e3430a9e943586d458a1ca22b973460bfb3e33f1d5d3b426bf50d7f20933
│ │ │  6ec0311b6d077086ca57f70b4a63f06fc88aed5060f311c744f3ce4e50422d85
│ │ │  335457038ddc664d6183171c7b0d65bc8f2c1986fce29f5d67fcd4a5f823a11a
│ │ │  a2e11115843201ee88f15530e9743c1a2b54452e39b977e132af2d97e021ecf5
│ │ │  58e1c72ee0713d29a4d6e25f859c0504464189033cfab2cffad567ccec68fc83
│ │ │  d91f2e4e9a5e77a1ffe66f048bf96b47c649d2886e29a31baee04f728a28940c
│ │ │  1d8c99a26ff8ba9990c7e5b13c1034866a6a1f396358e15e9795454038456f02
│ │ │ -b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f0000010062
│ │ │ -d97f1f01f03e65f037c7fee3230c59c36d170cc30f23372fbc6eb28d9ec87008
│ │ │ -f07660714bb43d98a06734a1658ce721feab8b0ece03ee54cb45dbaee9cff57f
│ │ │ -9d9c0fac4a2d67f4f314423973a42819a9eceba758344ef4b304f1737ebe23a4
│ │ │ -e13aba8e9f88bec5c067d61a16a3dcb347789575f4cfa8629880f734ec3db9cc
│ │ │ -d963cee322fa2eba5172715eb19686e185ff13dfcf23eb7ed9338230f90b4b57
│ │ │ -8f7f3c3fb8e0e968d4625646f5fb0897c3e2400e5a5596f01f841f7e4946d406
│ │ │ -977e6adbce9113d027a38cd34942cf3158422b590c27b2731fd506c2326a2dbb
│ │ │ -1a363a864475bd8464282544cf46fe60e94d705cda2d34257c9e3cadc378fe00
│ │ │ -00004025839bed8e61fecf86f99135e9912ab62b5497dc33bdf2bbda445cf237
│ │ │ -bfd47c8b826ec02b6cac983765bedd1ae17a57827f6fe0af965a2538a2776388
│ │ │ -c14b6c
│ │ │ +b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f0000010087
│ │ │ +37f4789b39e4bcbe32600d9a952265b9a8623a91658d6c5b5c7e8d42741219f2
│ │ │ +1f4d9e54994ffa87cc533d63273f7b7d24b63cc0415b62cd419656c63f5acf46
│ │ │ +688991664fc00c10740ab0cabbcdb639a9408b76c4cbf27827257fdd3aeaa526
│ │ │ +bb9425a9a8c55bb4d4a54e2d389de9561a61af754170bf640b8e23bc9c4c7945
│ │ │ +8cfdafc309c7737aa53d0fb451cc7476f73b04b4b5c6cfaeabc332d0478c8c5d
│ │ │ +bdde681ef55b30b669a106440c4676f5bf3454617d1707e710c0e426ee823ee1
│ │ │ +f1892576f4f4795e6e4fc040b9aab73d65ef132087fdaaba64fa8795a9eef4b6
│ │ │ +24700af69d0be0c2f86c1fbfc8a90cc0f50c0a90232cd3ce9f5987cf442d4b00
│ │ │ +0000405a720066a9593276d13e8b322c50381a926302d79ae6f571c5fcbbbefa
│ │ │ +71a9d259b7efa16aca52365e60baf1aef8904d28f9332d71b3fb3e8ecb30bcfb
│ │ │ +19053e
│ │ │   --- /tmp/guix-directory.jSGCMh/lib/nss/libfreeblpriv3.chk
│ │ ├── +++ 
/gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59/lib/nss/libfreeblpriv3.chk
│ │ │┄ xxd not available in path. Falling back to Python hexlify.
│ │ │ @@ -11,19 +11,19 @@
│ │ │  5c80e3430a9e943586d458a1ca22b973460bfb3e33f1d5d3b426bf50d7f20933
│ │ │  6ec0311b6d077086ca57f70b4a63f06fc88aed5060f311c744f3ce4e50422d85
│ │ │  335457038ddc664d6183171c7b0d65bc8f2c1986fce29f5d67fcd4a5f823a11a
│ │ │  a2e11115843201ee88f15530e9743c1a2b54452e39b977e132af2d97e021ecf5
│ │ │  58e1c72ee0713d29a4d6e25f859c0504464189033cfab2cffad567ccec68fc83
│ │ │  d91f2e4e9a5e77a1ffe66f048bf96b47c649d2886e29a31baee04f728a28940c
│ │ │  1d8c99a26ff8ba9990c7e5b13c1034866a6a1f396358e15e9795454038456f02
│ │ │ -b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f000001009a
│ │ │ -19ffb743e104ab34cda81d282b09c74ca73dab5baf4e5951814556e25fa92f09
│ │ │ -fbb06af5f80893a2c4fb0295ef23c2e8302fc238fda3f3d582c9d3e8c062ae8a
│ │ │ -e18dc7a48a1d9e97fc4d21e11abaeb7c98495f478affc6866742c48090d44b09
│ │ │ -a5832f4648b1d165de42e279df2d1512bfe47dffffb65f0c543a6c92cfe8beed
│ │ │ -3fa84456e6eef833bd675d04846d630eed817bfd153377745d5c6244e2f913ef
│ │ │ -17a2b360bebd6f9a0fcbb24ed86e2d59ae5f28df2632518390d7e2f75a2da2fe
│ │ │ -2bebf06b7d095a60282a93c38da54ae19625630aac1c4755339a047213ed98e9
│ │ │ -91ad52e2723789c34498a0d0eb78055949383ab3a583363c653c5ef89a0c0200
│ │ │ -000040862ab0814d947cfb3bf2cf74720e14c633e910a7d3d4d7a81364505701
│ │ │ -c3c2c785f6f3804f8aa0de63449bc436f1eb9a4ce187392103de463caec69431
│ │ │ -bffb74
│ │ │ +b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f0000010038
│ │ │ +5f7f605095448c566ae24ab5677dd5ff8519a2564d09c3550608f860b12d8e84
│ │ │ +a4e5b87752d9bc32caba6bd53d181776624e22a217d9c7567a4556bcb316a13e
│ │ │ +1ecf3d2aa360477073f1fa1d376704668122ec75d1d6177cd0368610d4c1c098
│ │ │ +1ca41b0fdd1a188bf4940a5b0773e9c7178cd4141032d9f3bca8f77c480884f6
│ │ │ +7a30ba559fcf7547abf80840bb0b42e7c3bb47bf3f064e20c827ce0b0ce48c8f
│ │ │ +f7ecb9f513589edd858a5e5a3441b12e10a8bb61c93c3cf33d04c518804dcc27
│ │ │ +7a9d0df213922ff752f8ea4cba6fb0f5ba8acb57dcf02d3746a7cc588b1362a8
│ │ │ +2f7c7077399e18536ca1540e2a868780605dc4bf518a2c86dd2bc904df989f00
│ │ │ +0000404547c764e3ab6f499e0ea3656a9332f2da71506a1a5178d4828657682a
│ │ │ +c5f3f65eaf7212c1a7e41438bb48524eb5e1eff3d87080f1339c5d3e99369d56
│ │ │ +ebc5fd
│ │ │   --- /tmp/guix-directory.jSGCMh/lib/nss/libnssdbm3.chk
│ │ ├── +++ 
/gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59/lib/nss/libnssdbm3.chk
│ │ │┄ xxd not available in path. Falling back to Python hexlify.
│ │ │ @@ -11,19 +11,19 @@
│ │ │  5c80e3430a9e943586d458a1ca22b973460bfb3e33f1d5d3b426bf50d7f20933
│ │ │  6ec0311b6d077086ca57f70b4a63f06fc88aed5060f311c744f3ce4e50422d85
│ │ │  335457038ddc664d6183171c7b0d65bc8f2c1986fce29f5d67fcd4a5f823a11a
│ │ │  a2e11115843201ee88f15530e9743c1a2b54452e39b977e132af2d97e021ecf5
│ │ │  58e1c72ee0713d29a4d6e25f859c0504464189033cfab2cffad567ccec68fc83
│ │ │  d91f2e4e9a5e77a1ffe66f048bf96b47c649d2886e29a31baee04f728a28940c
│ │ │  1d8c99a26ff8ba9990c7e5b13c1034866a6a1f396358e15e9795454038456f02
│ │ │ -b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f000001002e
│ │ │ -21ad266d676e56ae5ccc227879f1c1c6b9b6dd83eb7446a82f5a18bb09a4d252
│ │ │ -4cb3f635179b88fdab69e30efbc1684d7bcd5f24b3c6c70a14b998b19c7af1a0
│ │ │ -d3d79f75d2f3fd00a2fe19bfdcef007b67c2004f0571f670887e1f8ac7d1bf5d
│ │ │ -3dea50a0117efd7ff049d41ee286e642a0fe43256d77146324ab6ce8a83ef8c4
│ │ │ -9807d016f639f5ceb6f427062f5201e51e7776bb6463d89f9afeddbc7a9a28ee
│ │ │ -653be542425efa441a6815238c5898d33d76b9e44ceb7353e98927bb2935e025
│ │ │ -953cd7649241efaf3edbb5eed3abb7826c837dbbf2aaf1e1d9d2ee72dee0b3b5
│ │ │ -0d872cd2eb74969baa23c186b00fa87b4951ae0eb3fa867fb6462fad73154800
│ │ │ -0000403e373b8324248b0d53ba133dda29283d13350324847164c5ab29024678
│ │ │ -03611368137b58211456ce78c50968bd1233758422d591805c87d25b64a5abda
│ │ │ -09dda9
│ │ │ +b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f000001005b
│ │ │ +7a928e5d253ed22eb50a37023609db35ebab0672812f924d3ea7b74be43f26d5
│ │ │ +bc93ef30cd96d39daad0ab6eb98efab9047dcc73fa7b7dae259dc6a3f43255be
│ │ │ +e519afbb0a727b75247fc078fa22c0f1c716655c99e30b24867974959b52179d
│ │ │ +92d2b9bee276208c7ae5707975c55eea7125d83929709f5e63b6172e389a4858
│ │ │ +6d10c85f501882a285a476692f97247993f4aef2243b803b36528fc26d384503
│ │ │ +4437d3107e853f1d05a02f411e7e609ef720ff7bc299575d8840faaa40d33ddd
│ │ │ +b58f03a0669be967bc8021dfea2bbce37ae23b3c929ff98396d12a84e0634834
│ │ │ +1b80442fbbd9f7dcdda35dea83d1092c5ccc1ac2980bd0f3233bc82cbf165300
│ │ │ +00004030d6ccc46ba7ac1abdce687718962041cf98cb55787191130175f9e0d1
│ │ │ +ab8b2c610437f4e7a11d220d5989c3868d6db6257ab841d80ffcbff56d3b268c
│ │ │ +5abbee
│ │ │   --- /tmp/guix-directory.jSGCMh/lib/nss/libsoftokn3.chk
│ │ ├── +++ 
/gnu/store/vs3dxnrkbf58s85p49phxp5xambafp2m-nss-3.59/lib/nss/libsoftokn3.chk
│ │ │┄ xxd not available in path. Falling back to Python hexlify.
│ │ │ @@ -11,19 +11,19 @@
│ │ │  5c80e3430a9e943586d458a1ca22b973460bfb3e33f1d5d3b426bf50d7f20933
│ │ │  6ec0311b6d077086ca57f70b4a63f06fc88aed5060f311c744f3ce4e50422d85
│ │ │  335457038ddc664d6183171c7b0d65bc8f2c1986fce29f5d67fcd4a5f823a11a
│ │ │  a2e11115843201ee88f15530e9743c1a2b54452e39b977e132af2d97e021ecf5
│ │ │  58e1c72ee0713d29a4d6e25f859c0504464189033cfab2cffad567ccec68fc83
│ │ │  d91f2e4e9a5e77a1ffe66f048bf96b47c649d2886e29a31baee04f728a28940c
│ │ │  1d8c99a26ff8ba9990c7e5b13c1034866a6a1f396358e15e9795454038456f02
│ │ │ -b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f000001001e
│ │ │ -24d85331677aae2d94bd05a1efc093d260c20de07d57ee8c503956067275acf3
│ │ │ -0059cbab61581aa1c386dba534f268f96c5b9f802ef57311f7fa53915e8018b6
│ │ │ -d31abcd81c84f23d134ebe15127011e75cbbcaa809f6ca2d47f6ff67c3d02e8f
│ │ │ -5984d85463d458e3b35b9c35a1355fe4fae0709dd303eb4481809e10d8ce7ac0
│ │ │ -83ac85be99af4ce33520874f101665e0e77e7436ee6423cf82d4a8924aa53e51
│ │ │ -d21d7766aa5665041c4d4ef75fddce637a754ca42941cf986e1bbce60012bc1a
│ │ │ -5666674075c199c128048bcaee9dd35cb7e7248f553047c90e8e98511aeda17f
│ │ │ -2c75e8280037910e500c7e03c7bc935a7ad8d719484ff45bba3393e672c92500
│ │ │ -0000400605c2755588373f9f857d000b231c6d59cc6d0b1b08eb3f07a2b09cf7
│ │ │ -9a980124839b4bf70a8f3759f4e72fabc28550469f353451c570eb7b4efeebb2
│ │ │ -a15a6a
│ │ │ +b5866eae2f327ea13a342c1cd3ff4e2c381caa2e66be323e3c065f0000010011
│ │ │ +b0342b5cad4140db9fa893b68d1c5f3834c1cee9f95edc9b57a7968ec0c4ec2d
│ │ │ +18ccded167b847137ec4b8361aa1e782ccd0797b4401382f5d120848b67930be
│ │ │ +07389e0f52dda5f812d7462197594b4e86df50adedafbc57dc4e3160e09b8437
│ │ │ +4570899257469c8e97d46d40fe0801d906dfe8bdc611a953b2d0690a0e1d6dc8
│ │ │ +5c7699f30dee70856a6627847e08a710db7432e29b33474358005a53dfa5fa95
│ │ │ +f23817dda29c64694119e48e7a9b2a428d5afc42c43dafe78994cde0f065b7b9
│ │ │ +eca4ee565767ac13fe183cbac6c85002210e67ad8c5635c5bfde812c702b234a
│ │ │ +1dc530f5ff737c7ca25224e7375e35077874a999921570273afab1eb91f96200
│ │ │ +00004053356da884e81a92cd25fdea9dbd9137990a4e354d1421d50100bb7e56
│ │ │ +934dc868d7b5b00f1a9b470ca3c27379af91e9695c8fdab671a160b6272f9276
│ │ │ +d1fe04

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive
```