Comment 12 for bug 1868116

Bisect build
$ ninja -C _build uninstall; rm -rf _build; meson _build && ninja -C _build && ninja -C _build install; echo $?; ll /usr/local/lib/x86_64-linux-gnu/

Test
$ LD_LIBRARY_PATH=/usr/local/lib/x86_64-linux-gnu/:$LD_LIBRARY_PATH ./build/x86_64-softmmu/qemu-system-x86_64 -enable-kvm --drive media=cdrom,file=http://archive.ubuntu.com/ubuntu/dists/bionic/main/installer-amd64/current/images/netboot/mini.iso

After a while of testing, build errors and a wrong bisect start I eventually got this:

git bisect log
# bad: [a444c23eca931cadad321eaf06bc9c437ed9cee3] Version 0.59.91
# good: [b7440da36396cbdbaca005adef3789d2a8852985] ring: Fix an incorrect assertion
git bisect start '0.59.91' '0.58.2'
# good: [def2f0ee9dfbed821b859c9d59f2bb66ae76dd27] Version 0.57.90
git bisect good def2f0ee9dfbed821b859c9d59f2bb66ae76dd27
# bad: [1bdfc0fa1adf1225152068040c8bde0804297805] widget: Move scrollable adjustments up to Widget
git bisect bad 1bdfc0fa1adf1225152068040c8bde0804297805
# good: [7f6e48ce00eb0fd6992966a66df6464e85cfda84] ring: Tiny code cleanup: maintain GString integrity
git bisect good 7f6e48ce00eb0fd6992966a66df6464e85cfda84
# good: [416c41be417a051b1d20499754aaa0a827e43b6b] test: Document the changes made to UTF-8-test.txt
git bisect good 416c41be417a051b1d20499754aaa0a827e43b6b
# good: [623f3c66de097eefef44001a4ff70600c11313f9] build: Add configure switch to disable a11y code
git bisect good 623f3c66de097eefef44001a4ff70600c11313f9
# good: [cdccfe59db102628857086bd3b89de77b6de1d73] introspection: Fix signedness in vte_terminal_feed_child's annotation
git bisect good cdccfe59db102628857086bd3b89de77b6de1d73
# skip: [9e4fbae2cabcd937ac4d1a984ba844d24b44b83f] lib: Use ICU for legacy charset support
git bisect skip 9e4fbae2cabcd937ac4d1a984ba844d24b44b83f
# skip: [7888602c3a980eee093313b2c0f949c756668070] lib: Rework child exit and EOF handling
git bisect skip 7888602c3a980eee093313b2c0f949c756668070
# bad: [55e5d53676960feb5dc11400ecdc7c9d7c4ab13e] lib: Add missing files
git bisect bad 55e5d53676960feb5dc11400ecdc7c9d7c4ab13e
# good: [83cbe9998aa1c2babbf32eed0b5fa3909360a83b] widget: Deprecate vte_terminal_feed_child_binary
git bisect good 83cbe9998aa1c2babbf32eed0b5fa3909360a83b
# only skipped commits left to test
# possible first bad commit: [55e5d53676960feb5dc11400ecdc7c9d7c4ab13e] lib: Add missing files
# possible first bad commit: [7888602c3a980eee093313b2c0f949c756668070] lib: Rework child exit and EOF handling
# possible first bad commit: [9e4fbae2cabcd937ac4d1a984ba844d24b44b83f] lib: Use ICU for legacy charset support

So one of those three that won't build individually should be our candidate, lets take a look.