npm5 uid must be an unsigned int

⫸  cat /Users/wao/.npm/_logs/2017-05-06T09_46_27_579Z-debug.log
0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node',
1 verbose cli   '/usr/local/bin/npm5',
1 verbose cli   'i',
1 verbose cli   '-g',
1 verbose cli   'standard-readme' ]
2 info using npm@5.0.0-beta.43
3 info using node@v7.9.0
4 notice BETA npm5 is beta software. Please see https://github.com/npm/npm/issues/16510 for known issues, and please file a new one if you find something new.
5 silly install loadCurrentTree
6 silly install readGlobalPackageData
7 http fetch GET 200 https://registry.npmjs.org/standard-readme 30ms (from cache)
8 verbose pacote tag manifest for standard-readme@latest fetched in 54ms
9 silly install normalizeTree
10 silly install loadIdealTree
11 silly install cloneCurrentTreeToIdealTree
12 silly install loadShrinkwrap
13 silly install loadAllDepsIntoIdealTree
14 silly resolveWithNewModule standard-readme@1.0.28 checking installable status
15 silly currentTree lib
16 silly idealTree lib
16 silly idealTree └── standard-readme@1.0.28
17 silly install generateActionsToTake
18 silly diffTrees action count 1
19 silly diffTrees add standard-readme@1.0.28
20 silly decomposeActions action count 8
21 silly decomposeActions fetch standard-readme@1.0.28
22 silly decomposeActions extract standard-readme@1.0.28
23 silly decomposeActions test standard-readme@1.0.28
24 silly decomposeActions preinstall standard-readme@1.0.28
25 silly decomposeActions build standard-readme@1.0.28
26 silly decomposeActions install standard-readme@1.0.28
27 silly decomposeActions postinstall standard-readme@1.0.28
28 silly decomposeActions finalize standard-readme@1.0.28
29 silly install executeActions
30 silly doSerial global-install 0
31 verbose correctMkdir /Users/wao/.npm/_locks correctMkdir not in flight; initializing
32 verbose lock using /Users/wao/.npm/_locks/staging-3a08f0df5026584d.lock for /usr/local/lib/node_modules/.staging
33 silly doParallel extract 1
34 silly extract standard-readme@1.0.28
35 silly pacote trying standard-readme@latest by hash: sha1-K757jYzqpuGhrbDm4SgIIfskpKY=
36 silly pacote data for sha1-K757jYzqpuGhrbDm4SgIIfskpKY= not present. Using manifest.
37 http fetch GET 200 https://registry.npmjs.org/standard-readme 3ms (from cache)
38 verbose stack TypeError: uid must be an unsigned int
38 verbose stack     at Object.fs.chown (fs.js:1187:11)
38 verbose stack     at Object.chown (/usr/local/lib/node_modules/npm5/node_modules/graceful-fs/polyfills.js:259:17)
38 verbose stack     at /usr/local/lib/node_modules/npm5/node_modules/chownr/chownr.js:12:43
38 verbose stack     at go$readdir$cb (/usr/local/lib/node_modules/npm5/node_modules/graceful-fs/graceful-fs.js:149:14)
38 verbose stack     at FSReqWrap.oncomplete (fs.js:114:15)
39 verbose cwd /Users/wao
40 verbose Darwin 16.5.0
41 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm5" "i" "-g" "standard-readme"
42 verbose node v7.9.0
43 verbose npm  v5.0.0-beta.43
44 error uid must be an unsigned int
45 verbose exit [ 1, true ]