[INFO] cloning repository https://github.com/ndd7xv/redis-in-action-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ndd7xv/redis-in-action-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndd7xv%2Fredis-in-action-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndd7xv%2Fredis-in-action-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5036761ed6dc95e3425fabe1b652d4df0325658
[INFO] testing ndd7xv/redis-in-action-rs against beta-2024-12-08 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndd7xv%2Fredis-in-action-rs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ndd7xv/redis-in-action-rs on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ndd7xv/redis-in-action-rs
[INFO] finished tweaking git repo https://github.com/ndd7xv/redis-in-action-rs
[INFO] tweaked toml for git repo https://github.com/ndd7xv/redis-in-action-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ndd7xv/redis-in-action-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae25ceaae1588689be34af6277787a84029c43935ad99d12138741d1518908f0
[INFO] running `Command { std: "docker" "start" "-a" "ae25ceaae1588689be34af6277787a84029c43935ad99d12138741d1518908f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae25ceaae1588689be34af6277787a84029c43935ad99d12138741d1518908f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae25ceaae1588689be34af6277787a84029c43935ad99d12138741d1518908f0", kill_on_drop: false }`
[INFO] [stdout] ae25ceaae1588689be34af6277787a84029c43935ad99d12138741d1518908f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13e1cb754e2f8b5ca6c7a7984ffa70fbde84c4a36efba51dce7db52dfc90ca43
[INFO] running `Command { std: "docker" "start" "-a" "13e1cb754e2f8b5ca6c7a7984ffa70fbde84c4a36efba51dce7db52dfc90ca43", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling sha1_smol v1.0.0
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling sha1 v0.6.1
[INFO] [stderr]    Compiling urlparse v0.7.3
[INFO] [stderr]    Compiling combine v4.6.4
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling uuid-macro-internal v1.1.1
[INFO] [stderr]    Compiling uuid v1.1.1
[INFO] [stderr]    Compiling redis v0.21.5 (https://github.com/ndd7xv/redis-rs?branch=z-weights#bbe06834)
[INFO] [stderr]    Compiling redis v0.21.5
[INFO] [stderr]    Compiling ch01 v0.1.0 (/opt/rustwide/workdir/ch01)
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch01/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / pub fn article_vote<S>(conn: &mut Connection, user: S, article: S) -> Result<(), Box<dyn Error>>
[INFO] [stdout] 19 | | where
[INFO] [stdout] 20 | |     S: Into<String>,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch01/src/lib.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |         conn.zincr("score:", &article, VOTE_SCORE)?;
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 38 ~         conn.zincr::<_, _, _, ()>("score:", &article, VOTE_SCORE)?;
[INFO] [stdout] 39 ~         conn.hincr::<_, _, _, ()>(&article, "votes", 1)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch01/src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / pub fn post_article<S>(
[INFO] [stdout] 45 | |     conn: &mut Connection,
[INFO] [stdout] 46 | |     user: S,
[INFO] [stdout] 47 | |     title: S,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | | where
[INFO] [stdout] 51 | |     S: Into<String>,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch01/src/lib.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |     conn.sadd(&voted, &user)?;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 63 ~     conn.sadd::<_, _, ()>(&voted, &user)?;
[INFO] [stdout] 64 ~     conn.expire::<_, ()>(&voted, ONE_WEEK_IN_SECONDS)?;
[INFO] [stdout] 65 |
[INFO] [stdout] ...
[INFO] [stdout] 71 |     article.push_str(&article_id);
[INFO] [stdout] 72 ~     conn.hset_multiple::<_, _, _, ()>(
[INFO] [stdout] 73 |         &article,
[INFO] [stdout] ...
[INFO] [stdout] 82 |
[INFO] [stdout] 83 ~     conn.zadd::<_, _, _, ()>(
[INFO] [stdout] 84 |         "score:",
[INFO] [stdout] ...
[INFO] [stdout] 87 |     )?;
[INFO] [stdout] 88 ~     conn.zadd::<_, _, _, ()>("time:", &article, &now)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch01/src/lib.rs:112:1
[INFO] [stdout]     |
[INFO] [stdout] 112 | / pub fn add_remove_groups<Q, R, S>(
[INFO] [stdout] 113 | |     conn: &mut Connection,
[INFO] [stdout] 114 | |     article_id: Q,
[INFO] [stdout] 115 | |     to_add: Vec<R>,
[INFO] [stdout] ...   |
[INFO] [stdout] 120 | |     R: Into<String>,
[INFO] [stdout] 121 | |     S: Into<String>,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch01/src/lib.rs:129:14
[INFO] [stdout]     |
[INFO] [stdout] 129 |         conn.sadd(group, &article)?;
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 129 ~         conn.sadd::<_, _, ()>(group, &article)?;
[INFO] [stdout] 130 |     }
[INFO] [stdout] ...
[INFO] [stdout] 134 |         group.push_str(&group_label.into());
[INFO] [stdout] 135 ~         conn.srem::<_, _, ()>(group, &article)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch01/src/lib.rs:140:1
[INFO] [stdout]     |
[INFO] [stdout] 140 | / pub fn get_group_articles<S>(
[INFO] [stdout] 141 | |     conn: &mut Connection,
[INFO] [stdout] 142 | |     group: S,
[INFO] [stdout] 143 | |     page: isize,
[INFO] [stdout] ...   |
[INFO] [stdout] 146 | | where
[INFO] [stdout] 147 | |     S: Into<String>,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch01/src/lib.rs:156:14
[INFO] [stdout]     |
[INFO] [stdout] 156 |         conn.zinterstore_max(&key, &[&group_key, &order])?;
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 156 ~         conn.zinterstore_max::<_, ()>(&key, &[&group_key, &order])?;
[INFO] [stdout] 157 ~         conn.expire::<_, ()>(&key, 60)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ch02 v0.1.0 (/opt/rustwide/workdir/ch02)
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / pub fn update_token(
[INFO] [stdout] 22 | |     conn: &mut Connection,
[INFO] [stdout] 23 | |     token: &str,
[INFO] [stdout] 24 | |     user: &str,
[INFO] [stdout] 25 | |     item: Option<&str>,
[INFO] [stdout] 26 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     conn.hset("login:", &token, user)?;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 28 ~     conn.hset::<_, _, _, ()>("login:", &token, user)?;
[INFO] [stdout] 29 ~     conn.zadd::<_, _, _, ()>("recent:", &token, timestamp)?;
[INFO] [stdout] 30 |
[INFO] [stdout] ...
[INFO] [stdout] 34 |
[INFO] [stdout] 35 ~         conn.zadd::<_, _, _, ()>(&viewed, item, timestamp)?;
[INFO] [stdout] 36 ~         conn.zremrangebyrank::<_, ()>(&viewed, 0, -26)?;
[INFO] [stdout] 37 ~         conn.zincr::<_, _, _, ()>("viewed:", item, -1)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / pub fn clean_sessions(
[INFO] [stdout] 43 | |     conn: &mut Connection,
[INFO] [stdout] 44 | |     limit: isize,
[INFO] [stdout] 45 | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 46 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:65:14
[INFO] [stdout]    |
[INFO] [stdout] 65 |         conn.del(&views)?;
[INFO] [stdout]    |              ^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 65 ~         conn.del::<_, ()>(&views)?;
[INFO] [stdout] 66 ~         conn.hdel::<_, _, ()>("login:", &tokens)?;
[INFO] [stdout] 67 ~         conn.zrem::<_, _, ()>("recent:", &tokens)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:72:1
[INFO] [stdout]    |
[INFO] [stdout] 72 | / pub fn add_to_cart(
[INFO] [stdout] 73 | |     conn: &mut Connection,
[INFO] [stdout] 74 | |     session: &str,
[INFO] [stdout] 75 | |     item: &str,
[INFO] [stdout] 76 | |     count: isize,
[INFO] [stdout] 77 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:82:14
[INFO] [stdout]    |
[INFO] [stdout] 82 |         conn.hdel(key, item)?;
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 82 ~         conn.hdel::<_, _, ()>(key, item)?;
[INFO] [stdout] 83 |     } else {
[INFO] [stdout] 84 ~         conn.hset::<_, _, _, ()>(key, item, count)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:89:1
[INFO] [stdout]     |
[INFO] [stdout] 89  | / pub fn clean_full_sessions(
[INFO] [stdout] 90  | |     conn: &mut Connection,
[INFO] [stdout] 91  | |     limit: isize,
[INFO] [stdout] 92  | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 93  | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:116:14
[INFO] [stdout]     |
[INFO] [stdout] 116 |         conn.del(&session_keys)?;
[INFO] [stdout]     |              ^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 116 ~         conn.del::<_, ()>(&session_keys)?;
[INFO] [stdout] 117 ~         conn.hdel::<_, _, ()>("login:", &sessions)?;
[INFO] [stdout] 118 ~         conn.zrem::<_, _, ()>("recent:", &sessions)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:123:1
[INFO] [stdout]     |
[INFO] [stdout] 123 | / pub fn cache_request(
[INFO] [stdout] 124 | |     conn: &mut Connection,
[INFO] [stdout] 125 | |     request: &str,
[INFO] [stdout] 126 | |     callback: &dyn Fn(&str) -> String,
[INFO] [stdout] 127 | | ) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:136:10
[INFO] [stdout]     |
[INFO] [stdout] 136 |     conn.set_ex(&page_key, &content, 300_usize)?;
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 136 |     conn.set_ex::<_, _, ()>(&page_key, &content, 300_usize)?;
[INFO] [stdout]     |                ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | / pub fn schedule_row_cache(
[INFO] [stdout] 151 | |     conn: &mut Connection,
[INFO] [stdout] 152 | |     row_id: &str,
[INFO] [stdout] 153 | |     delay: isize,
[INFO] [stdout] 154 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:155:10
[INFO] [stdout]     |
[INFO] [stdout] 155 |     conn.zadd("delay:", row_id, delay)?;
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 155 ~     conn.zadd::<_, _, _, ()>("delay:", row_id, delay)?;
[INFO] [stdout] 156 |     let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis() as isize;
[INFO] [stdout] 157 ~     conn.zadd::<_, _, _, ()>("schedule:", row_id, now)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:161:1
[INFO] [stdout]     |
[INFO] [stdout] 161 | pub fn cache_rows(conn: &mut Connection, quit: Arc<AtomicBool>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:176:18
[INFO] [stdout]     |
[INFO] [stdout] 176 |             conn.zrem("delay:", &row_id)?;
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 176 ~             conn.zrem::<_, _, ()>("delay:", &row_id)?;
[INFO] [stdout] 177 ~             conn.zrem::<_, _, ()>("schedule:", &row_id)?;
[INFO] [stdout] 178 ~             conn.del::<_, ()>(&inv)?;
[INFO] [stdout] 179 |             continue;
[INFO] [stdout] ...
[INFO] [stdout] 184 |         let row = Inventory::get(&row_id);
[INFO] [stdout] 185 ~         conn.zadd::<_, _, _, ()>("schedule:", &row_id, now + delay)?;
[INFO] [stdout] 186 ~         conn.set::<_, _, ()>(&inv, serde_json::to_string(&row)?)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:191:1
[INFO] [stdout]     |
[INFO] [stdout] 191 | / pub fn rescale_viewed(
[INFO] [stdout] 192 | |     conn: &mut Connection,
[INFO] [stdout] 193 | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 194 | | ) -> Result<bool, Box<dyn Error>> {
[INFO] [stdout]     | |_________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |         conn.zremrangebyrank("viewed:", 20000, -1)?;
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 196 ~         conn.zremrangebyrank::<_, ()>("viewed:", 20000, -1)?;
[INFO] [stdout] 197 ~         conn.zinterstore_weights::<_, _, ()>("viewed:", &[("viewed", 0.5)])?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.15s
[INFO] running `Command { std: "docker" "inspect" "13e1cb754e2f8b5ca6c7a7984ffa70fbde84c4a36efba51dce7db52dfc90ca43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e1cb754e2f8b5ca6c7a7984ffa70fbde84c4a36efba51dce7db52dfc90ca43", kill_on_drop: false }`
[INFO] [stdout] 13e1cb754e2f8b5ca6c7a7984ffa70fbde84c4a36efba51dce7db52dfc90ca43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57654b340d8f52cdf215f0a11f7d8d60c696532905d5f498de9f9a5dc881d051
[INFO] running `Command { std: "docker" "start" "-a" "57654b340d8f52cdf215f0a11f7d8d60c696532905d5f498de9f9a5dc881d051", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling ch01 v0.1.0 (/opt/rustwide/workdir/ch01)
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch01/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / pub fn article_vote<S>(conn: &mut Connection, user: S, article: S) -> Result<(), Box<dyn Error>>
[INFO] [stdout] 19 | | where
[INFO] [stdout] 20 | |     S: Into<String>,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch01/src/lib.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |         conn.zincr("score:", &article, VOTE_SCORE)?;
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 38 ~         conn.zincr::<_, _, _, ()>("score:", &article, VOTE_SCORE)?;
[INFO] [stdout] 39 ~         conn.hincr::<_, _, _, ()>(&article, "votes", 1)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch01/src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / pub fn post_article<S>(
[INFO] [stdout] 45 | |     conn: &mut Connection,
[INFO] [stdout] 46 | |     user: S,
[INFO] [stdout] 47 | |     title: S,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | | where
[INFO] [stdout] 51 | |     S: Into<String>,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch01/src/lib.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |     conn.sadd(&voted, &user)?;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 63 ~     conn.sadd::<_, _, ()>(&voted, &user)?;
[INFO] [stdout] 64 ~     conn.expire::<_, ()>(&voted, ONE_WEEK_IN_SECONDS)?;
[INFO] [stdout] 65 |
[INFO] [stdout] ...
[INFO] [stdout] 71 |     article.push_str(&article_id);
[INFO] [stdout] 72 ~     conn.hset_multiple::<_, _, _, ()>(
[INFO] [stdout] 73 |         &article,
[INFO] [stdout] ...
[INFO] [stdout] 82 |
[INFO] [stdout] 83 ~     conn.zadd::<_, _, _, ()>(
[INFO] [stdout] 84 |         "score:",
[INFO] [stdout] ...
[INFO] [stdout] 87 |     )?;
[INFO] [stdout] 88 ~     conn.zadd::<_, _, _, ()>("time:", &article, &now)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch01/src/lib.rs:112:1
[INFO] [stdout]     |
[INFO] [stdout] 112 | / pub fn add_remove_groups<Q, R, S>(
[INFO] [stdout] 113 | |     conn: &mut Connection,
[INFO] [stdout] 114 | |     article_id: Q,
[INFO] [stdout] 115 | |     to_add: Vec<R>,
[INFO] [stdout] ...   |
[INFO] [stdout] 120 | |     R: Into<String>,
[INFO] [stdout] 121 | |     S: Into<String>,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch01/src/lib.rs:129:14
[INFO] [stdout]     |
[INFO] [stdout] 129 |         conn.sadd(group, &article)?;
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 129 ~         conn.sadd::<_, _, ()>(group, &article)?;
[INFO] [stdout] 130 |     }
[INFO] [stdout] ...
[INFO] [stdout] 134 |         group.push_str(&group_label.into());
[INFO] [stdout] 135 ~         conn.srem::<_, _, ()>(group, &article)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch01/src/lib.rs:140:1
[INFO] [stdout]     |
[INFO] [stdout] 140 | / pub fn get_group_articles<S>(
[INFO] [stdout] 141 | |     conn: &mut Connection,
[INFO] [stdout] 142 | |     group: S,
[INFO] [stdout] 143 | |     page: isize,
[INFO] [stdout] ...   |
[INFO] [stdout] 146 | | where
[INFO] [stdout] 147 | |     S: Into<String>,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch01/src/lib.rs:156:14
[INFO] [stdout]     |
[INFO] [stdout] 156 |         conn.zinterstore_max(&key, &[&group_key, &order])?;
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 156 ~         conn.zinterstore_max::<_, ()>(&key, &[&group_key, &order])?;
[INFO] [stdout] 157 ~         conn.expire::<_, ()>(&key, 60)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / pub fn update_token(
[INFO] [stdout] 22 | |     conn: &mut Connection,
[INFO] [stdout] 23 | |     token: &str,
[INFO] [stdout] 24 | |     user: &str,
[INFO] [stdout] 25 | |     item: Option<&str>,
[INFO] [stdout] 26 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     conn.hset("login:", &token, user)?;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 28 ~     conn.hset::<_, _, _, ()>("login:", &token, user)?;
[INFO] [stdout] 29 ~     conn.zadd::<_, _, _, ()>("recent:", &token, timestamp)?;
[INFO] [stdout] 30 |
[INFO] [stdout] ...
[INFO] [stdout] 34 |
[INFO] [stdout] 35 ~         conn.zadd::<_, _, _, ()>(&viewed, item, timestamp)?;
[INFO] [stdout] 36 ~         conn.zremrangebyrank::<_, ()>(&viewed, 0, -26)?;
[INFO] [stdout] 37 ~         conn.zincr::<_, _, _, ()>("viewed:", item, -1)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / pub fn clean_sessions(
[INFO] [stdout] 43 | |     conn: &mut Connection,
[INFO] [stdout] 44 | |     limit: isize,
[INFO] [stdout] 45 | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 46 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:65:14
[INFO] [stdout]    |
[INFO] [stdout] 65 |         conn.del(&views)?;
[INFO] [stdout]    |              ^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 65 ~         conn.del::<_, ()>(&views)?;
[INFO] [stdout] 66 ~         conn.hdel::<_, _, ()>("login:", &tokens)?;
[INFO] [stdout] 67 ~         conn.zrem::<_, _, ()>("recent:", &tokens)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:72:1
[INFO] [stdout]    |
[INFO] [stdout] 72 | / pub fn add_to_cart(
[INFO] [stdout] 73 | |     conn: &mut Connection,
[INFO] [stdout] 74 | |     session: &str,
[INFO] [stdout] 75 | |     item: &str,
[INFO] [stdout] 76 | |     count: isize,
[INFO] [stdout] 77 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:82:14
[INFO] [stdout]    |
[INFO] [stdout] 82 |         conn.hdel(key, item)?;
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 82 ~         conn.hdel::<_, _, ()>(key, item)?;
[INFO] [stdout] 83 |     } else {
[INFO] [stdout] 84 ~         conn.hset::<_, _, _, ()>(key, item, count)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:89:1
[INFO] [stdout]     |
[INFO] [stdout] 89  | / pub fn clean_full_sessions(
[INFO] [stdout] 90  | |     conn: &mut Connection,
[INFO] [stdout] 91  | |     limit: isize,
[INFO] [stdout] 92  | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 93  | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:116:14
[INFO] [stdout]     |
[INFO] [stdout] 116 |         conn.del(&session_keys)?;
[INFO] [stdout]     |              ^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 116 ~         conn.del::<_, ()>(&session_keys)?;
[INFO] [stdout] 117 ~         conn.hdel::<_, _, ()>("login:", &sessions)?;
[INFO] [stdout] 118 ~         conn.zrem::<_, _, ()>("recent:", &sessions)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:123:1
[INFO] [stdout]     |
[INFO] [stdout] 123 | / pub fn cache_request(
[INFO] [stdout] 124 | |     conn: &mut Connection,
[INFO] [stdout] 125 | |     request: &str,
[INFO] [stdout] 126 | |     callback: &dyn Fn(&str) -> String,
[INFO] [stdout] 127 | | ) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:136:10
[INFO] [stdout]     |
[INFO] [stdout] 136 |     conn.set_ex(&page_key, &content, 300_usize)?;
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 136 |     conn.set_ex::<_, _, ()>(&page_key, &content, 300_usize)?;
[INFO] [stdout]     |                ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | / pub fn schedule_row_cache(
[INFO] [stdout] 151 | |     conn: &mut Connection,
[INFO] [stdout] 152 | |     row_id: &str,
[INFO] [stdout] 153 | |     delay: isize,
[INFO] [stdout] 154 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:155:10
[INFO] [stdout]     |
[INFO] [stdout] 155 |     conn.zadd("delay:", row_id, delay)?;
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 155 ~     conn.zadd::<_, _, _, ()>("delay:", row_id, delay)?;
[INFO] [stdout] 156 |     let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis() as isize;
[INFO] [stdout] 157 ~     conn.zadd::<_, _, _, ()>("schedule:", row_id, now)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:161:1
[INFO] [stdout]     |
[INFO] [stdout] 161 | pub fn cache_rows(conn: &mut Connection, quit: Arc<AtomicBool>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:176:18
[INFO] [stdout]     |
[INFO] [stdout] 176 |             conn.zrem("delay:", &row_id)?;
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 176 ~             conn.zrem::<_, _, ()>("delay:", &row_id)?;
[INFO] [stdout] 177 ~             conn.zrem::<_, _, ()>("schedule:", &row_id)?;
[INFO] [stdout] 178 ~             conn.del::<_, ()>(&inv)?;
[INFO] [stdout] 179 |             continue;
[INFO] [stdout] ...
[INFO] [stdout] 184 |         let row = Inventory::get(&row_id);
[INFO] [stdout] 185 ~         conn.zadd::<_, _, _, ()>("schedule:", &row_id, now + delay)?;
[INFO] [stdout] 186 ~         conn.set::<_, _, ()>(&inv, serde_json::to_string(&row)?)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:191:1
[INFO] [stdout]     |
[INFO] [stdout] 191 | / pub fn rescale_viewed(
[INFO] [stdout] 192 | |     conn: &mut Connection,
[INFO] [stdout] 193 | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 194 | | ) -> Result<bool, Box<dyn Error>> {
[INFO] [stdout]     | |_________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |         conn.zremrangebyrank("viewed:", 20000, -1)?;
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 196 ~         conn.zremrangebyrank::<_, ()>("viewed:", 20000, -1)?;
[INFO] [stdout] 197 ~         conn.zinterstore_weights::<_, _, ()>("viewed:", &[("viewed", 0.5)])?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ch02 v0.1.0 (/opt/rustwide/workdir/ch02)
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch01/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / pub fn article_vote<S>(conn: &mut Connection, user: S, article: S) -> Result<(), Box<dyn Error>>
[INFO] [stdout] 19 | | where
[INFO] [stdout] 20 | |     S: Into<String>,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch01/src/lib.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |         conn.zincr("score:", &article, VOTE_SCORE)?;
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 38 ~         conn.zincr::<_, _, _, ()>("score:", &article, VOTE_SCORE)?;
[INFO] [stdout] 39 ~         conn.hincr::<_, _, _, ()>(&article, "votes", 1)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch01/src/lib.rs:44:1
[INFO] [stdout]    |
[INFO] [stdout] 44 | / pub fn post_article<S>(
[INFO] [stdout] 45 | |     conn: &mut Connection,
[INFO] [stdout] 46 | |     user: S,
[INFO] [stdout] 47 | |     title: S,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | | where
[INFO] [stdout] 51 | |     S: Into<String>,
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch01/src/lib.rs:63:10
[INFO] [stdout]    |
[INFO] [stdout] 63 |     conn.sadd(&voted, &user)?;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 63 ~     conn.sadd::<_, _, ()>(&voted, &user)?;
[INFO] [stdout] 64 ~     conn.expire::<_, ()>(&voted, ONE_WEEK_IN_SECONDS)?;
[INFO] [stdout] 65 |
[INFO] [stdout] ...
[INFO] [stdout] 71 |     article.push_str(&article_id);
[INFO] [stdout] 72 ~     conn.hset_multiple::<_, _, _, ()>(
[INFO] [stdout] 73 |         &article,
[INFO] [stdout] ...
[INFO] [stdout] 82 |
[INFO] [stdout] 83 ~     conn.zadd::<_, _, _, ()>(
[INFO] [stdout] 84 |         "score:",
[INFO] [stdout] ...
[INFO] [stdout] 87 |     )?;
[INFO] [stdout] 88 ~     conn.zadd::<_, _, _, ()>("time:", &article, &now)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch01/src/lib.rs:112:1
[INFO] [stdout]     |
[INFO] [stdout] 112 | / pub fn add_remove_groups<Q, R, S>(
[INFO] [stdout] 113 | |     conn: &mut Connection,
[INFO] [stdout] 114 | |     article_id: Q,
[INFO] [stdout] 115 | |     to_add: Vec<R>,
[INFO] [stdout] ...   |
[INFO] [stdout] 120 | |     R: Into<String>,
[INFO] [stdout] 121 | |     S: Into<String>,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch01/src/lib.rs:129:14
[INFO] [stdout]     |
[INFO] [stdout] 129 |         conn.sadd(group, &article)?;
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 129 ~         conn.sadd::<_, _, ()>(group, &article)?;
[INFO] [stdout] 130 |     }
[INFO] [stdout] ...
[INFO] [stdout] 134 |         group.push_str(&group_label.into());
[INFO] [stdout] 135 ~         conn.srem::<_, _, ()>(group, &article)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch01/src/lib.rs:140:1
[INFO] [stdout]     |
[INFO] [stdout] 140 | / pub fn get_group_articles<S>(
[INFO] [stdout] 141 | |     conn: &mut Connection,
[INFO] [stdout] 142 | |     group: S,
[INFO] [stdout] 143 | |     page: isize,
[INFO] [stdout] ...   |
[INFO] [stdout] 146 | | where
[INFO] [stdout] 147 | |     S: Into<String>,
[INFO] [stdout]     | |____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch01/src/lib.rs:156:14
[INFO] [stdout]     |
[INFO] [stdout] 156 |         conn.zinterstore_max(&key, &[&group_key, &order])?;
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 156 ~         conn.zinterstore_max::<_, ()>(&key, &[&group_key, &order])?;
[INFO] [stdout] 157 ~         conn.expire::<_, ()>(&key, 60)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / pub fn update_token(
[INFO] [stdout] 22 | |     conn: &mut Connection,
[INFO] [stdout] 23 | |     token: &str,
[INFO] [stdout] 24 | |     user: &str,
[INFO] [stdout] 25 | |     item: Option<&str>,
[INFO] [stdout] 26 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     conn.hset("login:", &token, user)?;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 28 ~     conn.hset::<_, _, _, ()>("login:", &token, user)?;
[INFO] [stdout] 29 ~     conn.zadd::<_, _, _, ()>("recent:", &token, timestamp)?;
[INFO] [stdout] 30 |
[INFO] [stdout] ...
[INFO] [stdout] 34 |
[INFO] [stdout] 35 ~         conn.zadd::<_, _, _, ()>(&viewed, item, timestamp)?;
[INFO] [stdout] 36 ~         conn.zremrangebyrank::<_, ()>(&viewed, 0, -26)?;
[INFO] [stdout] 37 ~         conn.zincr::<_, _, _, ()>("viewed:", item, -1)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / pub fn clean_sessions(
[INFO] [stdout] 43 | |     conn: &mut Connection,
[INFO] [stdout] 44 | |     limit: isize,
[INFO] [stdout] 45 | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 46 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:65:14
[INFO] [stdout]    |
[INFO] [stdout] 65 |         conn.del(&views)?;
[INFO] [stdout]    |              ^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 65 ~         conn.del::<_, ()>(&views)?;
[INFO] [stdout] 66 ~         conn.hdel::<_, _, ()>("login:", &tokens)?;
[INFO] [stdout] 67 ~         conn.zrem::<_, _, ()>("recent:", &tokens)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]   --> ch02/src/lib.rs:72:1
[INFO] [stdout]    |
[INFO] [stdout] 72 | / pub fn add_to_cart(
[INFO] [stdout] 73 | |     conn: &mut Connection,
[INFO] [stdout] 74 | |     session: &str,
[INFO] [stdout] 75 | |     item: &str,
[INFO] [stdout] 76 | |     count: isize,
[INFO] [stdout] 77 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]   --> ch02/src/lib.rs:82:14
[INFO] [stdout]    |
[INFO] [stdout] 82 |         conn.hdel(key, item)?;
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 82 ~         conn.hdel::<_, _, ()>(key, item)?;
[INFO] [stdout] 83 |     } else {
[INFO] [stdout] 84 ~         conn.hset::<_, _, _, ()>(key, item, count)?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:89:1
[INFO] [stdout]     |
[INFO] [stdout] 89  | / pub fn clean_full_sessions(
[INFO] [stdout] 90  | |     conn: &mut Connection,
[INFO] [stdout] 91  | |     limit: isize,
[INFO] [stdout] 92  | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 93  | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:116:14
[INFO] [stdout]     |
[INFO] [stdout] 116 |         conn.del(&session_keys)?;
[INFO] [stdout]     |              ^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 116 ~         conn.del::<_, ()>(&session_keys)?;
[INFO] [stdout] 117 ~         conn.hdel::<_, _, ()>("login:", &sessions)?;
[INFO] [stdout] 118 ~         conn.zrem::<_, _, ()>("recent:", &sessions)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:123:1
[INFO] [stdout]     |
[INFO] [stdout] 123 | / pub fn cache_request(
[INFO] [stdout] 124 | |     conn: &mut Connection,
[INFO] [stdout] 125 | |     request: &str,
[INFO] [stdout] 126 | |     callback: &dyn Fn(&str) -> String,
[INFO] [stdout] 127 | | ) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:136:10
[INFO] [stdout]     |
[INFO] [stdout] 136 |     conn.set_ex(&page_key, &content, 300_usize)?;
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 136 |     conn.set_ex::<_, _, ()>(&page_key, &content, 300_usize)?;
[INFO] [stdout]     |                ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | / pub fn schedule_row_cache(
[INFO] [stdout] 151 | |     conn: &mut Connection,
[INFO] [stdout] 152 | |     row_id: &str,
[INFO] [stdout] 153 | |     delay: isize,
[INFO] [stdout] 154 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:155:10
[INFO] [stdout]     |
[INFO] [stdout] 155 |     conn.zadd("delay:", row_id, delay)?;
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 155 ~     conn.zadd::<_, _, _, ()>("delay:", row_id, delay)?;
[INFO] [stdout] 156 |     let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis() as isize;
[INFO] [stdout] 157 ~     conn.zadd::<_, _, _, ()>("schedule:", row_id, now)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:161:1
[INFO] [stdout]     |
[INFO] [stdout] 161 | pub fn cache_rows(conn: &mut Connection, quit: Arc<AtomicBool>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:176:18
[INFO] [stdout]     |
[INFO] [stdout] 176 |             conn.zrem("delay:", &row_id)?;
[INFO] [stdout]     |                  ^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 176 ~             conn.zrem::<_, _, ()>("delay:", &row_id)?;
[INFO] [stdout] 177 ~             conn.zrem::<_, _, ()>("schedule:", &row_id)?;
[INFO] [stdout] 178 ~             conn.del::<_, ()>(&inv)?;
[INFO] [stdout] 179 |             continue;
[INFO] [stdout] ...
[INFO] [stdout] 184 |         let row = Inventory::get(&row_id);
[INFO] [stdout] 185 ~         conn.zadd::<_, _, _, ()>("schedule:", &row_id, now + delay)?;
[INFO] [stdout] 186 ~         conn.set::<_, _, ()>(&inv, serde_json::to_string(&row)?)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> ch02/src/lib.rs:191:1
[INFO] [stdout]     |
[INFO] [stdout] 191 | / pub fn rescale_viewed(
[INFO] [stdout] 192 | |     conn: &mut Connection,
[INFO] [stdout] 193 | |     quit: Arc<AtomicBool>,
[INFO] [stdout] 194 | | ) -> Result<bool, Box<dyn Error>> {
[INFO] [stdout]     | |_________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stdout]    --> ch02/src/lib.rs:196:14
[INFO] [stdout]     |
[INFO] [stdout] 196 |         conn.zremrangebyrank("viewed:", 20000, -1)?;
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]     |
[INFO] [stdout] 196 ~         conn.zremrangebyrank::<_, ()>("viewed:", 20000, -1)?;
[INFO] [stdout] 197 ~         conn.zinterstore_weights::<_, _, ()>("viewed:", &[("viewed", 0.5)])?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "57654b340d8f52cdf215f0a11f7d8d60c696532905d5f498de9f9a5dc881d051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57654b340d8f52cdf215f0a11f7d8d60c696532905d5f498de9f9a5dc881d051", kill_on_drop: false }`
[INFO] [stdout] 57654b340d8f52cdf215f0a11f7d8d60c696532905d5f498de9f9a5dc881d051
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1e79e270d5c7822f6dee3d4d71e4c2d3fff8dbe177fc963d2ad7b8fa69417364
[INFO] running `Command { std: "docker" "start" "-a" "1e79e270d5c7822f6dee3d4d71e4c2d3fff8dbe177fc963d2ad7b8fa69417364", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]   --> ch01/src/lib.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | / pub fn article_vote<S>(conn: &mut Connection, user: S, article: S) -> Result<(), Box<dyn Error>>
[INFO] [stderr] 19 | | where
[INFO] [stderr] 20 | |     S: Into<String>,
[INFO] [stderr]    | |____________________^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]    = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]   --> ch01/src/lib.rs:38:14
[INFO] [stderr]    |
[INFO] [stderr] 38 |         conn.zincr("score:", &article, VOTE_SCORE)?;
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]    |
[INFO] [stderr] 38 ~         conn.zincr::<_, _, _, ()>("score:", &article, VOTE_SCORE)?;
[INFO] [stderr] 39 ~         conn.hincr::<_, _, _, ()>(&article, "votes", 1)?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]   --> ch01/src/lib.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | / pub fn post_article<S>(
[INFO] [stderr] 45 | |     conn: &mut Connection,
[INFO] [stderr] 46 | |     user: S,
[INFO] [stderr] 47 | |     title: S,
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | | where
[INFO] [stderr] 51 | |     S: Into<String>,
[INFO] [stderr]    | |____________________^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]    = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]   --> ch01/src/lib.rs:63:10
[INFO] [stderr]    |
[INFO] [stderr] 63 |     conn.sadd(&voted, &user)?;
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]    |
[INFO] [stderr] 63 ~     conn.sadd::<_, _, ()>(&voted, &user)?;
[INFO] [stderr] 64 ~     conn.expire::<_, ()>(&voted, ONE_WEEK_IN_SECONDS)?;
[INFO] [stderr] 65 |
[INFO] [stderr] ...
[INFO] [stderr] 71 |     article.push_str(&article_id);
[INFO] [stderr] 72 ~     conn.hset_multiple::<_, _, _, ()>(
[INFO] [stderr] 73 |         &article,
[INFO] [stderr] ...
[INFO] [stderr] 82 |
[INFO] [stderr] 83 ~     conn.zadd::<_, _, _, ()>(
[INFO] [stderr] 84 |         "score:",
[INFO] [stderr] ...
[INFO] [stderr] 87 |     )?;
[INFO] [stderr] 88 ~     conn.zadd::<_, _, _, ()>("time:", &article, &now)?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> ch01/src/lib.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | / pub fn add_remove_groups<Q, R, S>(
[INFO] [stderr] 113 | |     conn: &mut Connection,
[INFO] [stderr] 114 | |     article_id: Q,
[INFO] [stderr] 115 | |     to_add: Vec<R>,
[INFO] [stderr] ...   |
[INFO] [stderr] 120 | |     R: Into<String>,
[INFO] [stderr] 121 | |     S: Into<String>,
[INFO] [stderr]     | |____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]    --> ch01/src/lib.rs:129:14
[INFO] [stderr]     |
[INFO] [stderr] 129 |         conn.sadd(group, &article)?;
[INFO] [stderr]     |              ^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 129 ~         conn.sadd::<_, _, ()>(group, &article)?;
[INFO] [stderr] 130 |     }
[INFO] [stderr] ...
[INFO] [stderr] 134 |         group.push_str(&group_label.into());
[INFO] [stderr] 135 ~         conn.srem::<_, _, ()>(group, &article)?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> ch01/src/lib.rs:140:1
[INFO] [stderr]     |
[INFO] [stderr] 140 | / pub fn get_group_articles<S>(
[INFO] [stderr] 141 | |     conn: &mut Connection,
[INFO] [stderr] 142 | |     group: S,
[INFO] [stderr] 143 | |     page: isize,
[INFO] [stderr] ...   |
[INFO] [stderr] 146 | | where
[INFO] [stderr] 147 | |     S: Into<String>,
[INFO] [stderr]     | |____________________^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]    --> ch01/src/lib.rs:156:14
[INFO] [stderr]     |
[INFO] [stderr] 156 |         conn.zinterstore_max(&key, &[&group_key, &order])?;
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 156 ~         conn.zinterstore_max::<_, ()>(&key, &[&group_key, &order])?;
[INFO] [stderr] 157 ~         conn.expire::<_, ()>(&key, 60)?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ch01` (lib) generated 4 warnings (run `cargo fix --lib -p ch01` to apply 4 suggestions)
[INFO] [stderr] warning: `ch01` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]   --> ch02/src/lib.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | / pub fn update_token(
[INFO] [stderr] 22 | |     conn: &mut Connection,
[INFO] [stderr] 23 | |     token: &str,
[INFO] [stderr] 24 | |     user: &str,
[INFO] [stderr] 25 | |     item: Option<&str>,
[INFO] [stderr] 26 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]    = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]   --> ch02/src/lib.rs:28:10
[INFO] [stderr]    |
[INFO] [stderr] 28 |     conn.hset("login:", &token, user)?;
[INFO] [stderr]    |          ^^^^
[INFO] [stderr]    = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]    |
[INFO] [stderr] 28 ~     conn.hset::<_, _, _, ()>("login:", &token, user)?;
[INFO] [stderr] 29 ~     conn.zadd::<_, _, _, ()>("recent:", &token, timestamp)?;
[INFO] [stderr] 30 |
[INFO] [stderr] ...
[INFO] [stderr] 34 |
[INFO] [stderr] 35 ~         conn.zadd::<_, _, _, ()>(&viewed, item, timestamp)?;
[INFO] [stderr] 36 ~         conn.zremrangebyrank::<_, ()>(&viewed, 0, -26)?;
[INFO] [stderr] 37 ~         conn.zincr::<_, _, _, ()>("viewed:", item, -1)?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]   --> ch02/src/lib.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | / pub fn clean_sessions(
[INFO] [stderr] 43 | |     conn: &mut Connection,
[INFO] [stderr] 44 | |     limit: isize,
[INFO] [stderr] 45 | |     quit: Arc<AtomicBool>,
[INFO] [stderr] 46 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]    = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]   --> ch02/src/lib.rs:65:14
[INFO] [stderr]    |
[INFO] [stderr] 65 |         conn.del(&views)?;
[INFO] [stderr]    |              ^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]    |
[INFO] [stderr] 65 ~         conn.del::<_, ()>(&views)?;
[INFO] [stderr] 66 ~         conn.hdel::<_, _, ()>("login:", &tokens)?;
[INFO] [stderr] 67 ~         conn.zrem::<_, _, ()>("recent:", &tokens)?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]   --> ch02/src/lib.rs:72:1
[INFO] [stderr]    |
[INFO] [stderr] 72 | / pub fn add_to_cart(
[INFO] [stderr] 73 | |     conn: &mut Connection,
[INFO] [stderr] 74 | |     session: &str,
[INFO] [stderr] 75 | |     item: &str,
[INFO] [stderr] 76 | |     count: isize,
[INFO] [stderr] 77 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]    = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]    = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]   --> ch02/src/lib.rs:82:14
[INFO] [stderr]    |
[INFO] [stderr] 82 |         conn.hdel(key, item)?;
[INFO] [stderr]    |              ^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]    |
[INFO] [stderr] 82 ~         conn.hdel::<_, _, ()>(key, item)?;
[INFO] [stderr] 83 |     } else {
[INFO] [stderr] 84 ~         conn.hset::<_, _, _, ()>(key, item, count)?;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> ch02/src/lib.rs:89:1
[INFO] [stderr]     |
[INFO] [stderr] 89  | / pub fn clean_full_sessions(
[INFO] [stderr] 90  | |     conn: &mut Connection,
[INFO] [stderr] 91  | |     limit: isize,
[INFO] [stderr] 92  | |     quit: Arc<AtomicBool>,
[INFO] [stderr] 93  | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | |_______________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]    --> ch02/src/lib.rs:116:14
[INFO] [stderr]     |
[INFO] [stderr] 116 |         conn.del(&session_keys)?;
[INFO] [stderr]     |              ^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 116 ~         conn.del::<_, ()>(&session_keys)?;
[INFO] [stderr] 117 ~         conn.hdel::<_, _, ()>("login:", &sessions)?;
[INFO] [stderr] 118 ~         conn.zrem::<_, _, ()>("recent:", &sessions)?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> ch02/src/lib.rs:123:1
[INFO] [stderr]     |
[INFO] [stderr] 123 | / pub fn cache_request(
[INFO] [stderr] 124 | |     conn: &mut Connection,
[INFO] [stderr] 125 | |     request: &str,
[INFO] [stderr] 126 | |     callback: &dyn Fn(&str) -> String,
[INFO] [stderr] 127 | | ) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | |___________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]    --> ch02/src/lib.rs:136:10
[INFO] [stderr]     |
[INFO] [stderr] 136 |     conn.set_ex(&page_key, &content, 300_usize)?;
[INFO] [stderr]     |          ^^^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 136 |     conn.set_ex::<_, _, ()>(&page_key, &content, 300_usize)?;
[INFO] [stderr]     |                ++++++++++++
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> ch02/src/lib.rs:150:1
[INFO] [stderr]     |
[INFO] [stderr] 150 | / pub fn schedule_row_cache(
[INFO] [stderr] 151 | |     conn: &mut Connection,
[INFO] [stderr] 152 | |     row_id: &str,
[INFO] [stderr] 153 | |     delay: isize,
[INFO] [stderr] 154 | | ) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | |_______________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]    --> ch02/src/lib.rs:155:10
[INFO] [stderr]     |
[INFO] [stderr] 155 |     conn.zadd("delay:", row_id, delay)?;
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 155 ~     conn.zadd::<_, _, _, ()>("delay:", row_id, delay)?;
[INFO] [stderr] 156 |     let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis() as isize;
[INFO] [stderr] 157 ~     conn.zadd::<_, _, _, ()>("schedule:", row_id, now)?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> ch02/src/lib.rs:161:1
[INFO] [stderr]     |
[INFO] [stderr] 161 | pub fn cache_rows(conn: &mut Connection, quit: Arc<AtomicBool>) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]    --> ch02/src/lib.rs:176:18
[INFO] [stderr]     |
[INFO] [stderr] 176 |             conn.zrem("delay:", &row_id)?;
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 176 ~             conn.zrem::<_, _, ()>("delay:", &row_id)?;
[INFO] [stderr] 177 ~             conn.zrem::<_, _, ()>("schedule:", &row_id)?;
[INFO] [stderr] 178 ~             conn.del::<_, ()>(&inv)?;
[INFO] [stderr] 179 |             continue;
[INFO] [stderr] ...
[INFO] [stderr] 184 |         let row = Inventory::get(&row_id);
[INFO] [stderr] 185 ~         conn.zadd::<_, _, _, ()>("schedule:", &row_id, now + delay)?;
[INFO] [stderr] 186 ~         conn.set::<_, _, ()>(&inv, serde_json::to_string(&row)?)?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this function depends on never type fallback being `()`
[INFO] [stderr]    --> ch02/src/lib.rs:191:1
[INFO] [stderr]     |
[INFO] [stderr] 191 | / pub fn rescale_viewed(
[INFO] [stderr] 192 | |     conn: &mut Connection,
[INFO] [stderr] 193 | |     quit: Arc<AtomicBool>,
[INFO] [stderr] 194 | | ) -> Result<bool, Box<dyn Error>> {
[INFO] [stderr]     | |_________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stderr]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stderr]     = help: specify the types explicitly
[INFO] [stderr] note: in edition 2024, the requirement `!: FromRedisValue` will fail
[INFO] [stderr]    --> ch02/src/lib.rs:196:14
[INFO] [stderr]     |
[INFO] [stderr] 196 |         conn.zremrangebyrank("viewed:", 20000, -1)?;
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^
[INFO] [stderr] help: use `()` annotations to avoid fallback changes
[INFO] [stderr]     |
[INFO] [stderr] 196 ~         conn.zremrangebyrank::<_, ()>("viewed:", 20000, -1)?;
[INFO] [stderr] 197 ~         conn.zinterstore_weights::<_, _, ()>("viewed:", &[("viewed", 0.5)])?;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ch02` (lib) generated 8 warnings (run `cargo fix --lib -p ch02` to apply 8 suggestions)
[INFO] [stderr] warning: `ch02` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ch01-3be1b90d9ac065ed)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_article_functionality ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_article_functionality stdout ----
[INFO] [stdout] thread 'tests::test_article_functionality' panicked at ch01/src/lib.rs:176:14:
[INFO] [stdout] Should be able to Establish Connection: Connection refused (os error 111)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x6513d02cad4a - std::backtrace_rs::backtrace::libunwind::trace::h8810477743020387
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x6513d02cad4a - std::backtrace_rs::backtrace::trace_unsynchronized::h3aa55355dd6c54a6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x6513d02cad4a - std::sys::backtrace::_print_fmt::h8588b0f62410823f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x6513d02cad4a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h98c26ac25ffe89bb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x6513d02f2093 - core::fmt::rt::Argument::fmt::hf95377f4aebd453b
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x6513d02f2093 - core::fmt::write::h0dd5f6e2238c7982
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/fmt/mod.rs:1189:21
[INFO] [stdout]    6:     0x6513d02c7183 - std::io::Write::write_fmt::h03bb0ca26e6faf8c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/io/mod.rs:1884:15
[INFO] [stdout]    7:     0x6513d02cab92 - std::sys::backtrace::BacktraceLock::print::h5c19c1c038ee186d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x6513d02cc1cd - std::panicking::default_hook::{{closure}}::h77172f079a1fcb13
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:268:22
[INFO] [stdout]    9:     0x6513d02cbfd7 - std::panicking::default_hook::he5f8e3b203ccddba
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:292:9
[INFO] [stdout]   10:     0x6513d01eee77 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7a3c7b4a1ae77f2f
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   11:     0x6513d01eee77 - test::test_main::{{closure}}::hf0d3b69ae9b353d1
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:134:21
[INFO] [stdout]   12:     0x6513d02cc878 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6332e82e7b189abd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1986:9
[INFO] [stdout]   13:     0x6513d02cc878 - std::panicking::rust_panic_with_hook::h53863d4e9018df39
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:809:13
[INFO] [stdout]   14:     0x6513d02cc63a - std::panicking::begin_panic_handler::{{closure}}::h67280e6fa0757873
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:674:13
[INFO] [stdout]   15:     0x6513d02cb229 - std::sys::backtrace::__rust_end_short_backtrace::h1dac3f54d6fbbeb2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:170:18
[INFO] [stdout]   16:     0x6513d02cc2cc - rust_begin_unwind
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:665:5
[INFO] [stdout]   17:     0x6513d01a5180 - core::panicking::panic_fmt::h6792bd1b2bf01041
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panicking.rs:76:14
[INFO] [stdout]   18:     0x6513d01a55c6 - core::result::unwrap_failed::h05e0602ed34287c5
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1699:5
[INFO] [stdout]   19:     0x6513d01b364f - core::result::Result<T,E>::expect::ha13dff2ee3aeebcf
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/result.rs:1061:23
[INFO] [stdout]   20:     0x6513d01aff4b - ch01::tests::test_article_functionality::h9212d21546e013dc
[INFO] [stdout]                                at /opt/rustwide/workdir/ch01/src/lib.rs:173:24
[INFO] [stdout]   21:     0x6513d01afe57 - ch01::tests::test_article_functionality::{{closure}}::h5f565e731d6fc7fa
[INFO] [stdout]                                at /opt/rustwide/workdir/ch01/src/lib.rs:172:36
[INFO] [stdout]   22:     0x6513d01a61a6 - core::ops::function::FnOnce::call_once::ha779ad76f7d85ae9
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x6513d01f399b - core::ops::function::FnOnce::call_once::h871bf86719ec9aa4
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x6513d01f399b - test::__rust_begin_short_backtrace::h2167df1e2b7d76fd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:632:18
[INFO] [stdout]   25:     0x6513d01f3388 - test::run_test_in_process::{{closure}}::h15d92f75a3adfb79
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:60
[INFO] [stdout]   26:     0x6513d01f3388 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb6c8955835a8dbbb
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x6513d01f3388 - std::panicking::try::do_call::hc79d0fc888a0bd30
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   28:     0x6513d01f3388 - std::panicking::try::hb8a7878e3a8589d6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   29:     0x6513d01f3388 - std::panic::catch_unwind::hb8e4600ff0ff5cfa
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x6513d01f3388 - test::run_test_in_process::hc2900b0b18688dd6
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:655:27
[INFO] [stdout]   31:     0x6513d01f3388 - test::run_test::{{closure}}::hac2a9cb07be3d48d
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:576:43
[INFO] [stdout]   32:     0x6513d01b6e2a - test::run_test::{{closure}}::h4a5b729e66a38cd8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/test/src/lib.rs:606:41
[INFO] [stdout]   33:     0x6513d01b6e2a - std::sys::backtrace::__rust_begin_short_backtrace::h0496fb742492f573
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/backtrace.rs:154:18
[INFO] [stdout]   34:     0x6513d01ba7a4 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hbb6d257c550a54bd
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:561:17
[INFO] [stdout]   35:     0x6513d01ba7a4 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h46696fe4a6832328
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x6513d01ba7a4 - std::panicking::try::do_call::h2625a51b667bfb64
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:557:40
[INFO] [stdout]   37:     0x6513d01ba7a4 - std::panicking::try::hb956a59a1973aa4c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panicking.rs:520:19
[INFO] [stdout]   38:     0x6513d01ba7a4 - std::panic::catch_unwind::h64f3b9d1067ef6a0
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/panic.rs:358:14
[INFO] [stdout]   39:     0x6513d01ba7a4 - std::thread::Builder::spawn_unchecked_::{{closure}}::h42b2841295b6c0b2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/thread/mod.rs:559:30
[INFO] [stdout]   40:     0x6513d01ba7a4 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6127de71b8124639
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x6513d02d089b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h42f0ba71002a1b2c
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   42:     0x6513d02d089b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::had9e47d7a3dcecb8
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/alloc/src/boxed.rs:1972:9
[INFO] [stdout]   43:     0x6513d02d089b - std::sys::pal::unix::thread::Thread::new::thread_start::h48cf765408f6f5f2
[INFO] [stdout]                                at /rustc/202008a1b8de96d2e5b6bc02d379db03a877d34d/library/std/src/sys/pal/unix/thread.rs:105:17
[INFO] [stdout]   44:     0x7302d336cac3 - <unknown>
[INFO] [stdout]   45:     0x7302d33fda04 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::test_article_functionality
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p ch01 --lib`
[INFO] running `Command { std: "docker" "inspect" "1e79e270d5c7822f6dee3d4d71e4c2d3fff8dbe177fc963d2ad7b8fa69417364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e79e270d5c7822f6dee3d4d71e4c2d3fff8dbe177fc963d2ad7b8fa69417364", kill_on_drop: false }`
[INFO] [stdout] 1e79e270d5c7822f6dee3d4d71e4c2d3fff8dbe177fc963d2ad7b8fa69417364
