[DRE-maint] Bug#950843: chef: FTBFS against Ruby2.7 and Bundler 2.1.4

[Utkarsh Gupta]

Package: chef
Version: 13.8.7-4
Severity: critical

Dear Maintainer,

chef currently doesn't have support for Ruby2.7 and the latest version 
of bundler, that is, 2.1.4.

The logs for Ruby2.7 failures are as follows:
https://people.debian.org/~kanashiro/ruby2.7/builds/7/chef/chef_13.8.7-4+rebuild1580868163_amd64-2020-02-05T02:02:44Z.build


-- System Information:
Debian Release: bullseye/sid
   APT prefers unstable
   APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.4.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages chef depends on:
ii  chef-zero                   13.1.0-2
ii  debconf [debconf-2.0]       1.5.73
ii  lsb-base                    11.1.0
ii  ohai                        13.8.0-1
ii  ruby                        1:2.5.2
ii  ruby-addressable            2.7.0-1
ii  ruby-bundler                1.17.3-3
ii  ruby-chef-config            13.8.7-4
ii  ruby-diff-lcs               1.3-1
ii  ruby-erubis                 2.7.0-3
ii  ruby-ffi-yajl               2.3.1-1+b1
ii  ruby-highline               1.7.8-1
ii  ruby-iniparse               1.4.2-1
ii  ruby-iso8601                0.12.1-1
ii  ruby-mixlib-archive         0.4.1-1
ii  ruby-mixlib-authentication  1.4.1-1
ii  ruby-mixlib-cli             1.7.0-1
ii  ruby-mixlib-log             1.7.1-1
ii  ruby-mixlib-shellout        2.2.6-1
ii  ruby-net-sftp               1:2.1.2-4
ii  ruby-net-ssh                1:5.2.0-1
ii  ruby-net-ssh-multi          1.2.1-3
ii  ruby-plist                  3.2.0-1
ii  ruby-proxifier              1.0.3-1
ii  ruby-rspec-core             3.8.0c0e1m0s0-1
ii  ruby-rspec-expectations     3.8.0c0e1m0s0-1
ii  ruby-rspec-mocks            3.8.0c0e1m0s0-1
ii  ruby-serverspec             2.41.5-1
ii  ruby-specinfra              2.82.8-1
ii  ruby-syslog-logger          1.6.8-1
ii  ruby-uuidtools              2.1.5-2
ii  ucf                         3.0038+nmu1

chef recommends no packages.

chef suggests no packages.

-- debconf information excluded