[INFO] cloning repository https://github.com/ivanovaleksey/janus-streaming-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ivanovaleksey/janus-streaming-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanovaleksey%2Fjanus-streaming-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanovaleksey%2Fjanus-streaming-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2cd2752bc4c9bd2e5b6baf095af52d9c758213b
[INFO] checking ivanovaleksey/janus-streaming-rs against master#03c609abb6638f9d7f49f34326d4137d07f5cd61 for pr-155945
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanovaleksey%2Fjanus-streaming-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ivanovaleksey/janus-streaming-rs
[INFO] finished tweaking git repo https://github.com/ivanovaleksey/janus-streaming-rs
[INFO] tweaked toml for git repo https://github.com/ivanovaleksey/janus-streaming-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ivanovaleksey/janus-streaming-rs on toolchain 03c609abb6638f9d7f49f34326d4137d07f5cd61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ivanovaleksey/janus-streaming-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" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.5
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded num v0.1.40
[INFO] [stderr]   Downloaded amy v0.8.1
[INFO] [stderr]   Downloaded bitflags v1.0.0
[INFO] [stderr]   Downloaded colored v1.5.3
[INFO] [stderr]   Downloaded serde v1.0.16
[INFO] [stderr]   Downloaded lazy_static v0.2.9
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] [stderr]   Downloaded libc v0.2.33
[INFO] [stderr]   Downloaded janus-plugin v0.2.1
[INFO] [stderr]   Downloaded janus-plugin-sys v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58a3b2ccab058e7e156fc6f8877bb8f7863b04158553e0b26d9a9efeb65a2bac
[INFO] running `Command { std: "docker" "start" "-a" "58a3b2ccab058e7e156fc6f8877bb8f7863b04158553e0b26d9a9efeb65a2bac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58a3b2ccab058e7e156fc6f8877bb8f7863b04158553e0b26d9a9efeb65a2bac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a3b2ccab058e7e156fc6f8877bb8f7863b04158553e0b26d9a9efeb65a2bac", kill_on_drop: false }`
[INFO] [stdout] 58a3b2ccab058e7e156fc6f8877bb8f7863b04158553e0b26d9a9efeb65a2bac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+03c609abb6638f9d7f49f34326d4137d07f5cd61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b3d9b731566391208ec6c1a820db215627ba3bc337c10d503996b9fb53635f6
[INFO] running `Command { std: "docker" "start" "-a" "4b3d9b731566391208ec6c1a820db215627ba3bc337c10d503996b9fb53635f6", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling jansson-sys v0.1.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking lazy_static v0.2.9
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking cstr-macro v0.1.0
[INFO] [stderr]     Checking serde v1.0.16
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking bitflags v1.0.0
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking colored v1.5.3
[INFO] [stderr]    Compiling glib-sys v0.4.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking janus-plugin-sys v0.1.0
[INFO] [stderr]     Checking janus-plugin v0.2.1
[INFO] [stderr]     Checking amy v0.8.1
[INFO] [stderr]     Checking serde_json v1.0.5
[INFO] [stderr]     Checking janus-streaming-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]    --> src/lib.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |                 &mut PLUGIN,
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]     = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]    --> src/lib.rs:272:1
[INFO] [stdout]     |
[INFO] [stdout] 272 | const PLUGIN: janus_plugin::Plugin = build_plugin!(
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `jsep` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Message {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     jsep: Option<JanssonValue>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / lazy_static! {
[INFO] [stdout] 35 | |     static ref CHANNEL: Mutex<Option<mpsc::Sender<Message>>> = Mutex::new(None);
[INFO] [stdout] 36 | |     static ref SESSIONS: RwLock<Vec<Box<Session>>> = RwLock::new(Vec::new());
[INFO] [stdout] 37 | |     static ref SOCKETS: RwLock<HashMap<usize, UdpSocket>> = RwLock::new(HashMap::new());
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]    --> src/lib.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |                 &mut PLUGIN,
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]     = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]    --> src/lib.rs:272:1
[INFO] [stdout]     |
[INFO] [stdout] 272 | const PLUGIN: janus_plugin::Plugin = build_plugin!(
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `jsep` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Message {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     jsep: Option<JanssonValue>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.18s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "4b3d9b731566391208ec6c1a820db215627ba3bc337c10d503996b9fb53635f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b3d9b731566391208ec6c1a820db215627ba3bc337c10d503996b9fb53635f6", kill_on_drop: false }`
[INFO] [stdout] 4b3d9b731566391208ec6c1a820db215627ba3bc337c10d503996b9fb53635f6
