Debug Information:
    OS: Ubuntu, v18.04
    Node Version: v8.15.1
    Ghost-CLI Version: 1.11.0
    Environment: production
    Command: 'ghost update'
Message: Command failed: yarn install --no-emoji --no-progress
warning ghost@2.25.2: The engine "cli" appears to be invalid.
warning "@tryghost/members-auth-pages > react-stripe-elements@2.0.3" has unmet peer dependency "react@^15.5.4 || ^16.0.0-0".
warning "@tryghost/members-auth-pages > react-stripe-elements@2.0.3" has unmet peer dependency "react-dom@^15.5.4 || ^16.0.0-0".
error /var/www/ghost/versions/2.25.2/node_modules/rsa-keypair: Command failed.
Exit code: 1
Command: node-gyp rebuild
Arguments:
Directory: /var/www/ghost/versions/2.25.2/node_modules/rsa-keypair
Output:
gyp info it worked if it ends with ok
gyp info using node-gyp@3.8.0
gyp info using node@8.15.1 | linux | x64
gyp info spawn /usr/bin/python2
gyp info spawn args [ '/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py',
gyp info spawn args   'binding.gyp',
gyp info spawn args   '-f',
gyp info spawn args   'make',
gyp info spawn args   '-I',
gyp info spawn args   '/var/www/ghost/versions/2.25.2/node_modules/rsa-keypair/build/config.gypi',
gyp info spawn args   '-I',
gyp info spawn args   '/usr/lib/node_modules/npm/node_modules/node-gyp/addon.gypi',
gyp info spawn args   '-I',
gyp info spawn args   '/home/user/.node-gyp/8.15.1/include/node/common.gypi',
gyp info spawn args   '-Dlibrary=shared_library',
gyp info spawn args   '-Dvisibility=default',
gyp info spawn args   '-Dnode_root_dir=/home/user/.node-gyp/8.15.1',
gyp info spawn args   '-Dnode_gyp_dir=/usr/lib/node_modules/npm/node_modules/node-gyp',
gyp info spawn args   '-Dnode_lib_file=/home/user/.node-gyp/8.15.1/<(target_arch)/node.lib',
gyp info spawn args   '-Dmodule_root_dir=/var/www/ghost/versions/2.25.2/node_modules/rsa-keypair',
gyp info spawn args   '-Dnode_engine=v8',
gyp info spawn args   '--depth=.',
gyp info spawn args   '--no-parallel',
gyp info spawn args   '--generator-output',
gyp info spawn args   'build',
gyp info spawn args   '-Goutput_dir=.' ]
Traceback (most recent call last):
  File "/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py", line 13, in <module>
    import gyp
  File "/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 8, in <module>
    import gyp.input
  File "/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 5, in <module>
    from compiler.ast import Const
ImportError: No module named compiler.ast
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:345:16)
gyp ERR! stack     at emitTwo (events.js:126:13)
gyp ERR! stack     at ChildProcess.emit (events.js:214:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
gyp ERR! System Linux 4.15.0-47-generic
gyp ERR! command "/usr/bin/node" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /var/www/ghost/versions/2.25.2/node_modules/rsa-keypair
gyp ERR! node -v v8.15.1
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok

yarn install v1.16.0
[1/5] Validating package.json...
[2/5] Resolving packages...
[3/5] Fetching packages...
[4/5] Linking dependencies...
[5/5] Building fresh packages...
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

Exit code: 1

--------------- stdout ---------------
yarn install v1.16.0
[1/5] Validating package.json...
[2/5] Resolving packages...
[3/5] Fetching packages...
[4/5] Linking dependencies...
[5/5] Building fresh packages...
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.


--------------- stderr ---------------
warning ghost@2.25.2: The engine "cli" appears to be invalid.
warning "@tryghost/members-auth-pages > react-stripe-elements@2.0.3" has unmet peer dependency "react@^15.5.4 || ^16.0.0-0".
warning "@tryghost/members-auth-pages > react-stripe-elements@2.0.3" has unmet peer dependency "react-dom@^15.5.4 || ^16.0.0-0".
error /var/www/ghost/versions/2.25.2/node_modules/rsa-keypair: Command failed.
Exit code: 1
Command: node-gyp rebuild
Arguments:
Directory: /var/www/ghost/versions/2.25.2/node_modules/rsa-keypair
Output:
gyp info it worked if it ends with ok
gyp info using node-gyp@3.8.0
gyp info using node@8.15.1 | linux | x64
gyp info spawn /usr/bin/python2
gyp info spawn args [ '/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py',
gyp info spawn args   'binding.gyp',
gyp info spawn args   '-f',
gyp info spawn args   'make',
gyp info spawn args   '-I',
gyp info spawn args   '/var/www/ghost/versions/2.25.2/node_modules/rsa-keypair/build/config.gypi',
gyp info spawn args   '-I',
gyp info spawn args   '/usr/lib/node_modules/npm/node_modules/node-gyp/addon.gypi',
gyp info spawn args   '-I',
gyp info spawn args   '/home/user/.node-gyp/8.15.1/include/node/common.gypi',
gyp info spawn args   '-Dlibrary=shared_library',
gyp info spawn args   '-Dvisibility=default',
gyp info spawn args   '-Dnode_root_dir=/home/user/.node-gyp/8.15.1',
gyp info spawn args   '-Dnode_gyp_dir=/usr/lib/node_modules/npm/node_modules/node-gyp',
gyp info spawn args   '-Dnode_lib_file=/home/user/.node-gyp/8.15.1/<(target_arch)/node.lib',
gyp info spawn args   '-Dmodule_root_dir=/var/www/ghost/versions/2.25.2/node_modules/rsa-keypair',
gyp info spawn args   '-Dnode_engine=v8',
gyp info spawn args   '--depth=.',
gyp info spawn args   '--no-parallel',
gyp info spawn args   '--generator-output',
gyp info spawn args   'build',
gyp info spawn args   '-Goutput_dir=.' ]
Traceback (most recent call last):
  File "/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py", line 13, in <module>
    import gyp
  File "/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 8, in <module>
    import gyp.input
  File "/usr/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 5, in <module>
    from compiler.ast import Const
ImportError: No module named compiler.ast
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (/usr/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:345:16)
gyp ERR! stack     at emitTwo (events.js:126:13)
gyp ERR! stack     at ChildProcess.emit (events.js:214:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
gyp ERR! System Linux 4.15.0-47-generic
gyp ERR! command "/usr/bin/node" "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /var/www/ghost/versions/2.25.2/node_modules/rsa-keypair
gyp ERR! node -v v8.15.1
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok