试图测试一个建立在Rails上的网站，并不断收到一个拒绝允许我设置服务器的错误。
收到错误后，我使用了"gem install bootsnap -v '1.4.2' --source 'https://rubygems.org/'，源代码为 Rubygems。相同的错误：
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing bootsnap:
ERROR: Failed to build gem native extension.
current directory: C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2/ext/bootsnap
C:/RailsInstaller/Ruby2.3.3/bin/ruby.exe -I C:/RailsInstaller/Ruby2.3.3/lib/ruby/site_ruby/2.3.0 -r ./siteconf20190327-13232-1084dsi.rb extconf.rb
creating Makefile
current directory: C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2/ext/bootsnap
make "DESTDIR=" clean
current directory: C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2/ext/bootsnap
make "DESTDIR="
generating bootsnap-i386-mingw32.def
compiling bootsnap.c
bootsnap.c: In function 'bs_cache_path':
bootsnap.c:240:3: warning: unknown conversion type character 'l' in format [-Wformat]
bootsnap.c:240:3: warning: too many arguments for format [-Wformat-extra-args]
bootsnap.c: In function 'bs_rb_fetch':
bootsnap.c:281:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
bootsnap.c: In function 'fetch_cached_data':
bootsnap.c:407:3: warning: comparison is always false due to limited range of data type [-Wtype-limits]
bootsnap.c: In function 'atomic_write_cache_file':
bootsnap.c:479:3: warning: implicit declaration of function 'mkstemp' [-Wimplicit-function-declaration]
bootsnap.c: In function 'bs_rb_fetch':
bootsnap.c:623:13: warning: 'output_data' may be used uninitialized in this function [-Wmaybe-uninitialized]
bootsnap.c:594:9: note: 'output_data' was declared here
linking shared-object bootsnap/bootsnap.so
bootsnap.o: In function `atomic_write_cache_file':
C:RailsInstallerRuby2.3.3librubygems2.3.0gemsbootsnap-1.4.2extbootsnap/bootsnap.c:479: undefined reference to `mkstemp'
collect2.exe: error: ld returned 1 exit status
make: *** [bootsnap.so] Error 1
make failed, exit code 2
Gem files will remain installed in C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2 for inspection.
Results logged to C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/extensions/x86-mingw32/2.3.0/bootsnap-1.4.2/gem_make.out
我的宝石文件包括以下内容：
# Reduces boot times through caching; required in config/boot.rb
gem 'bootsnap', '>= 1.4.2', require: true
我确实看到引导快照位于：C：\RailsInstaller\Ruby2.3.3\lib\ruby\gems\2.3.0\gems
有谁知道如何摆脱这个？它也不在我的宝石列表中。
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing bootsnap:
ERROR: Failed to build gem native extension.
current directory: C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2/ext/bootsnap
C:/RailsInstaller/Ruby2.3.3/bin/ruby.exe -I C:/RailsInstaller/Ruby2.3.3/lib/ruby/site_ruby/2.3.0 -r ./siteconf20190327-21940-1y9qpk9.rb extconf.rb
creating Makefile
current directory: C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2/ext/bootsnap
make "DESTDIR=" clean
current directory: C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2/ext/bootsnap
make "DESTDIR="
generating bootsnap-i386-mingw32.def
compiling bootsnap.c
bootsnap.c: In function 'bs_cache_path':
bootsnap.c:240:3: warning: unknown conversion type character 'l' in format [-Wformat]
bootsnap.c:240:3: warning: too many arguments for format [-Wformat-extra-args]
bootsnap.c: In function 'bs_rb_fetch':
bootsnap.c:281:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
bootsnap.c: In function 'fetch_cached_data':
bootsnap.c:407:3: warning: comparison is always false due to limited range of data type [-Wtype-limits]
bootsnap.c: In function 'atomic_write_cache_file':
bootsnap.c:479:3: warning: implicit declaration of function 'mkstemp' [-Wimplicit-function-declaration]
bootsnap.c: In function 'bs_rb_fetch':
bootsnap.c:623:13: warning: 'output_data' may be used uninitialized in this function [-Wmaybe-uninitialized]
bootsnap.c:594:9: note: 'output_data' was declared here
linking shared-object bootsnap/bootsnap.so
bootsnap.o: In function `atomic_write_cache_file':
C:RailsInstallerRuby2.3.3librubygems2.3.0gemsbootsnap-1.4.2extbootsnap/bootsnap.c:479: undefined reference to `mkstemp'
collect2.exe: error: ld returned 1 exit status
make: *** [bootsnap.so] Error 1
make failed, exit code 2
Gem files will remain installed in C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/bootsnap-1.4.2 for inspection.
Results logged to C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/extensions/x86-mingw32/2.3.0/bootsnap-1.4.2/gem_make.out
我遇到了同样的问题，我也在Windows计算机上使用railsinstaller。
为了解决这个问题，我像这样更新了我的宝石文件：
#gem 'bootsnap', '>= 1.1.0', require: false
gem 'bootsnap', '= 1.4.1', require: false
然后在项目目录中运行命令：bundle install。
我也遇到了同样的问题。我正在使用 ruby 2.3.0，导轨 5.2.3。 为了解决这个问题，我更新了我的宝石文件。
# it don't work....
# gem 'bootsnap', '>= 1.1.0', require: false
# gem 'bootsnap', '>= 1.4.2', require: false
gem 'bootsnap', require: false
然后捆绑安装，它可以工作！