[INFO] fetching crate generic-channel 0.2.0...
[INFO] testing generic-channel-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate generic-channel 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate generic-channel 0.2.0
[INFO] finished tweaking crates.io crate generic-channel 0.2.0
[INFO] tweaked toml for crates.io crate generic-channel 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate generic-channel 0.2.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding crossbeam-channel v0.3.9 (available: v0.5.15)
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8090f4f39c6bbeb3b522fe6e9d4af3c537dde13a7eadbd22d84c29f8022c05cf
[INFO] running `Command { std: "docker" "start" "-a" "8090f4f39c6bbeb3b522fe6e9d4af3c537dde13a7eadbd22d84c29f8022c05cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8090f4f39c6bbeb3b522fe6e9d4af3c537dde13a7eadbd22d84c29f8022c05cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8090f4f39c6bbeb3b522fe6e9d4af3c537dde13a7eadbd22d84c29f8022c05cf", kill_on_drop: false }`
[INFO] [stdout] 8090f4f39c6bbeb3b522fe6e9d4af3c537dde13a7eadbd22d84c29f8022c05cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f62f70bcd5052d481c9f9bb359fa280e3a6db12fbc0abcb0aa70ff74a96950a
[INFO] running `Command { std: "docker" "start" "-a" "1f62f70bcd5052d481c9f9bb359fa280e3a6db12fbc0abcb0aa70ff74a96950a", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-channel v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `crossbeam_channel`
[INFO] [stdout]  --> src/receiver.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[cfg(feature = "crossbeam_channel")]
[INFO] [stdout]   |       ^^^^^^^^^^-------------------
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 help: there is a expected value with a similar name: `"crossbeam-channel"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `all`, `crossbeam-channel`, and `futures`
[INFO] [stdout]   = help: consider adding `crossbeam_channel` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "1f62f70bcd5052d481c9f9bb359fa280e3a6db12fbc0abcb0aa70ff74a96950a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f62f70bcd5052d481c9f9bb359fa280e3a6db12fbc0abcb0aa70ff74a96950a", kill_on_drop: false }`
[INFO] [stdout] 1f62f70bcd5052d481c9f9bb359fa280e3a6db12fbc0abcb0aa70ff74a96950a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b72190d88c39e649458ea0ca06ce478c1ed5d04fe31a18feaf546103b281e28
[INFO] running `Command { std: "docker" "start" "-a" "8b72190d88c39e649458ea0ca06ce478c1ed5d04fe31a18feaf546103b281e28", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stdout] warning: unexpected `cfg` condition value: `crossbeam_channel`
[INFO] [stdout]  --> src/receiver.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[cfg(feature = "crossbeam_channel")]
[INFO] [stdout]   |       ^^^^^^^^^^-------------------
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 help: there is a expected value with a similar name: `"crossbeam-channel"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `all`, `crossbeam-channel`, and `futures`
[INFO] [stdout]   = help: consider adding `crossbeam_channel` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling generic-channel v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `crossbeam_channel`
[INFO] [stdout]  --> src/receiver.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[cfg(feature = "crossbeam_channel")]
[INFO] [stdout]   |       ^^^^^^^^^^-------------------
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 help: there is a expected value with a similar name: `"crossbeam-channel"`
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `all`, `crossbeam-channel`, and `futures`
[INFO] [stdout]   = help: consider adding `crossbeam_channel` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `generic-channel` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stdout] error[E0596]: cannot borrow `*sender` as mutable, as `sender` is not declared as mutable
[INFO] [stdout]   --> src/lib.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let sender: Box<dyn Sender<u8>> = Box::new(sender);
[INFO] [stdout]    |             ^^^^^^ not mutable
[INFO] [stdout] 54 |         sender.try_send(1).expect("send");
[INFO] [stdout]    |         ------ cannot borrow as mutable
[INFO] [stdout] ...
[INFO] [stdout] 57 |         assert_eq!(sender.try_send(2), Err(TrySendError::Disconnected(2u8)));
[INFO] [stdout]    |                    ------ cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let mut sender: Box<dyn Sender<u8>> = Box::new(sender);
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8b72190d88c39e649458ea0ca06ce478c1ed5d04fe31a18feaf546103b281e28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b72190d88c39e649458ea0ca06ce478c1ed5d04fe31a18feaf546103b281e28", kill_on_drop: false }`
[INFO] [stdout] 8b72190d88c39e649458ea0ca06ce478c1ed5d04fe31a18feaf546103b281e28
