--no-default-features -F clap,sqlite,fjall did not fail only on the
axum listener in mint_authz's tests. The library itself broke: gc, the
migration engine, sequencer sync events, account policy and the space
reader, writer and mint authorizer all name crate::http or crate::oauth
types, which gave 23 unresolved-path errors across modules that look
unrelated to HTTP.
There is no server here without the HTTP layer, so the combination is declared unsupported instead of giving each of those modules a second, HTTP-free shape. A compile_error! next to the sqlite one names the missing feature and comes first in the error output. The Cargo.toml, README feature table and CHANGELOG now say so. No CI step is added, because nothing unsupported gets built.
Closes atproto-crates#hh3s.