无法从package.json安装npm，但需要手动安装

Question

root@227ca98cf079:~# npm install
npm WARN deprecated @mapbox/gl-matrix@0.0.1: This
npm WARN deprecated circular-json@0.3.3: CircularJSON is in maintenance only, flatted is its successor.
npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.
npm WARN deprecated cryptiles@2.0.5: This version is no longer maintained. Please upgrade to the latest version.
npm WARN deprecated boom@2.10.1: This version is no longer maintained. Please upgrade to the latest version.
npm WARN deprecated hoek@2.16.3: This version is no longer maintained. Please upgrade to the latest version.
npm WARN deprecated gulp-util@3.0.8: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.2.7 (node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.7: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

npm ERR! code ETARGET
npm ERR! notarget No matching version found for unicode-match-property-value-ecmascript@^1.1.0
npm ERR! notarget In most cases you or one of your dependencies are requesting
npm ERR! notarget a package version that doesn't exist.
npm ERR! notarget 
npm ERR! notarget It was specified as a dependency of 'regexpu-core'
npm ERR! notarget 

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2019-03-06T08_02_19_842Z-debug.log

但是 ：

root@227ca98cf079:~# npm install unicode-match-property-value-ecmascript@^1.1.0
npm WARN enorasys-ss-ii-webui@2.0.0 license should be a valid SPDX license expression

+ unicode-match-property-value-ecmascript@1.1.0
updated 1 package in 1.117s

这怎么可能？

root@227ca98cf079:~# npm -v
6.4.1
root@227ca98cf079:~# node -v
v8.15.0
root@227ca98cf079:~# cat /etc/os-release 
PRETTY_NAME="Debian GNU/Linux 8 (jessie)"
NAME="Debian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=debian
HOME_URL="http://www.debian.org/"
SUPPORT_URL="http://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

我们正在nexus中使用我们自己的托管npm注册表。