Heroku-18でAptfileにlibssl-devを含めてMastodonをビルドするとSEGVをもらうが、Heroku-16経由でビルドあるいはlibssl-devを除いてビルドするともらわない

01-heroku-18-without-libssl-dev.txt

$ ldd vendor/bundle/ruby/2.5.0/gems/puma-3.11.4/lib/puma/puma_http11.so
        linux-vdso.so.1 (0x00007ffca71e9000)
        libssl.so.1.1 => /usr/lib/x86_64-linux-gnu/libssl.so.1.1 (0x00007f6c86954000)
        libcrypto.so.1.1 => /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 (0x00007f6c864dc000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f6c862bd000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f6c85ecc000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f6c85cc8000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f6c86dc8000)

02-heroku-18-with-libssl-dev.txt

$ ldd vendor/bundle/ruby/2.5.0/gems/puma-3.11.4/lib/puma/puma_http11.so
        linux-vdso.so.1 (0x00007ffffbfce000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f9957f47000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f9957d43000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9957952000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f9958642000)

03-heroku-16-with-libssl-dev.txt

$ ldd vendor/bundle/ruby/2.5.0/gems/puma-3.11.4/lib/puma/puma_http11.so
        linux-vdso.so.1 (0x00007ffee84a1000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8ac4355000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f8ac494d000)

04-heroku-16-with-libssl-dev-build.txt

  :
  -----> Fetching .debs for libssl-dev
       Reading package lists...
       Building dependency tree...
       0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 45 not upgraded.
       Need to get 1,372 kB of archives.
       After this operation, 0 B of additional disk space will be used.
       Get:1 http://archive.ubuntu.com/ubuntu bionic-security/main amd64 libssl-dev amd64 1.1.0g-2ubuntu4.1 [1,372 kB]
       Fetched 1,372 kB in 1s (2,011 kB/s)
       Download complete and in download only mode
W: --force-yes is deprecated, use one of the options starting with --allow instead.
  :
  -----> Installing libssl-dev_1.1.0g-2ubuntu4.1_amd64.deb
  :