From zika's strace:

...
18151 open("/lib/tls/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib/tls/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/lib/tls/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib/tls", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/lib/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/lib/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0
18151 open("/usr/lib/tls/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib/tls/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/usr/lib/tls/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib/tls", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/usr/lib/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/usr/lib/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib", {st_mode=S_IFDIR|0755, st_size=65536, ...}) = 0
18151 open("/lib/x86_64-linux-gnu/tls/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib/x86_64-linux-gnu/tls/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/lib/x86_64-linux-gnu/tls/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib/x86_64-linux-gnu/tls", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/lib/x86_64-linux-gnu/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib/x86_64-linux-gnu/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/lib/x86_64-linux-gnu/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/lib/x86_64-linux-gnu", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/usr/lib/x86_64-linux-gnu/tls/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib/x86_64-linux-gnu/tls/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/usr/lib/x86_64-linux-gnu/tls/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib/x86_64-linux-gnu/tls", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/usr/lib/x86_64-linux-gnu/x86_64/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib/x86_64-linux-gnu/x86_64", 0x7fffa908e1b0) = -1 ENOENT (No such file or directory)
18151 open("/usr/lib/x86_64-linux-gnu/libasound_module_conf_pulse.so", O_RDONLY) = -1 ENOENT (No such file or directory)
18151 stat("/usr/lib/x86_64-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
18151 munmap(0x7f31e3d97000, 56423) = 0
18151 write(2, "ALSA lib conf.c:3272snd_config"..., 45) = 45
18151 write(2, "Cannot open shared library libas"..., 57) = 57
...

Notice how /usr/lib/alsa-lib/ is not in the library search path.