Configuration error:
There is a programmable error in your configuration file:

Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/sphinx/config.py", line 326, in eval_config_file
    execfile_(filename, namespace)
  File "/usr/lib/python3.9/site-packages/sphinx/util/pycompat.py", line 88, in execfile_
    exec(code, _globals)
  File "/build/llvm/src/llvm-11.0.1.src/docs/conf.py", line 40, in <module>
    import recommonmark
ModuleNotFoundError: No module named 'recommonmark'

Configuring attoparsec-0.13.2.4...
Error:
    The following packages are broken because other packages they depend on are missing. These broken packages must be rebuilt before they can be used.
installed package tasty-1.3.1 is broken due to missing package ansi-terminal-0.11-2SXi8ZhU18i2uWLidRUotS, async-2.2.2-K8T9LglWxlG5HgD5vvGjbo, optparse-applicative-0.16.1.0-JDPEASK1GJS1Nsq2qjjZCq
installed package tasty-quickcheck-0.10.1.2 is broken due to missing package QuickCheck-2.14.2-io0WylueSG4seqSTUQCKM, optparse-applicative-0.16

Checking PKGBUILD
Traceback (most recent call last):
  File "/usr/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/usr/lib/python3.9/site-packages/namcap.py", line 247, in <module>
    process_pkgbuild(package, active_modules)
  File "/usr/lib/python3.9/site-packages/namcap.py", line 153, in process_pkgbuild
    name = "PKGBUILD (" + pkginfo["name"] + ")"
  File "/usr/lib/python3.9/site-packages/Namcap/package.py", line 128, in __getitem__
    return self._data[self.canonical_varname(key)]
KeyError: 'name'
==> Running checkpkg
error: no targets specified (use -h for help)
==> WARNING: Skipped checkpkg due to missing repo packages

resolving dependencies...
warning: cannot resolve "libpulse.so=0-32", a dependency of "libao"
warning: cannot resolve "libpulse-simple.so=0-32", a dependency of "libao"
:: The following package cannot be upgraded due to unresolvable dependencies:
      libao

:: Do you want to skip the above package for this upgrade? [y/N] n
error: failed to prepare transaction (could not satisfy dependencies)
:: unable to satisfy dependency 'libpulse.so=0-32' required by libao
:: unable to satisfy dependency 'libpulse-simple.so=0-32' required by libao

no task description

:: removing user-manager breaks dependency ‘user-manager’ required by plasma-meta

either building 1.49 via 1.48, via 1.47 or we have to bootstrap from a binary version again.

newsboat: error while loading shared libraries: libjson-c.so.4: cannot open shared object file: No such file or directory

root@arch32-stable-pentium4 ~]# iotop
No module named 'iotop'
To run an uninstalled copy of iotop,
launch iotop.py in the top directory

iotop is a Python script, presumably some Python modules are missing.

breaks in more SIMD optimizations.

:: installing mutter (3.38.1-1.1) breaks dependency ‘libmutter-6.so=0-32’ required by gnome-shell

libhandy0: /usr/share/vala/vapi/libhandy-0.0.deps exists in filesystem (owned by libhandy)
libhandy0: /usr/share/vala/vapi/libhandy-0.0.vapi exists in filesystem (owned by libhandy)

gnome-shell segfaults in libmutter.

                                                               Stack trace of thread 1009:
                                                               #0  0x00000000b64d5436 n/a (libmutter-cogl-6.so.0 + 0xe436)
                                                               #1  0x00000000b64d809c n/a (libmutter-cogl-6.so.0 + 0x1109c)
                                                               #2  0x00000000b653edb9 n/a (libmutter-cogl-6.so.0 + 0x77db9)
                                                               #3  0x00000000b64f8fc5 cogl_flush (libmutter-cogl-6.so.0 + 0x31fc5)
                                                               #4  0x00000000b6549154 cogl_onscreen_swap_buffers_with_damage (libmutter-cogl-6.so.0 + 0x82154)
                                                               #5  0x00000000b6c59f73 n/a (libmutter-clutter-6.so.0 + 0x10ff73)
                                                               #6  0x00000000b6c53cf2 n/a (libmutter-clutter-6.so.0 + 0x109cf2)
                                                               #7  0x00000000b6c54747 n/a (libmutter-clutter-6.so.0 + 0x10a747)
                                                               #8  0x00000000b6bf52ad n/a (libmutter-clutter-6.so.0 + 0xab2ad)
                                                               #9  0x00000000b7703bde g_main_context_dispatch (libglib-2.0.so.0 + 0x4dbde)
                                                               #10 0x00000000b7752962 n/a (libglib-2.0.so.0 + 0x9c962)
                                                               #11 0x00000000b7702299 g_main_loop_run (libglib-2.0.so.0 + 0x4c299)
                                                               #12 0x00000000b697f216 meta_run (libmutter-6.so.0 + 0xb9216)
                                                               #13 0x000000000043144e n/a (gnome-shell + 0x244e)
                                                               #14 0x00000000b7cd900e __libc_start_main (libc.so.6 + 0x1f00e)
                                                               #15 0x0000000000431635 n/a (gnome-shell + 0x2635)

chromium apparently also has trouble in some seccomp jailing:

 ../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
../../sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0403
[1201:1210:0227/131355.020958:FATAL:gpu_data_manager_impl_private.cc(990)] The display compositor is frequently crashing. Goodbye.

[1]+  Trace/breakpoint trap   (core dumped) chromium

warning: cannot resolve “firefox>=71.0”, a dependency of “firefox-i18n-de”

:: installing clang (9.0.1-1.0) breaks dependency ‘clang=9.0.0’ required by kdevelop

Seen with trojita:
Cannot mix incompatible Qt library (version 0x50d02) with this library (version 0x50d01)

shell> echo > rust.rc <<EOF
fn main() {
        println!( "Hello Rust! " );
}
EOF

shell> rustc rust.rs
error: failed to find a `codegen-backends` folder in the sysroot candidates:
* /usr
* /usr

Presumably the i686 folders are moved around in PKGBUILD to form lib32
libraries for rust on 64-bit.