[INFO] fetching crate rill-core 0.5.0-beta.4...
[INFO] checking rill-core-0.5.0-beta.4 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate rill-core 0.5.0-beta.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate rill-core 0.5.0-beta.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rill-core 0.5.0-beta.4
[INFO] tweaked toml for crates.io crate rill-core 0.5.0-beta.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rill-core 0.5.0-beta.4 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rill-core 0.5.0-beta.4 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 892e7fbf10bba8c4250ccafdca0d97d7980de8b5aa9d43f415b09b2996085707
[INFO] running `Command { std: "docker" "start" "-a" "892e7fbf10bba8c4250ccafdca0d97d7980de8b5aa9d43f415b09b2996085707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "892e7fbf10bba8c4250ccafdca0d97d7980de8b5aa9d43f415b09b2996085707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "892e7fbf10bba8c4250ccafdca0d97d7980de8b5aa9d43f415b09b2996085707", kill_on_drop: false }`
[INFO] [stdout] 892e7fbf10bba8c4250ccafdca0d97d7980de8b5aa9d43f415b09b2996085707
[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=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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77c624b94a9fbc3289a4b077a29924a3d293575ba66d174fca5193991711f09e
[INFO] running `Command { std: "docker" "start" "-a" "77c624b94a9fbc3289a4b077a29924a3d293575ba66d174fca5193991711f09e", kill_on_drop: false }`
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking tokio v1.49.0
[INFO] [stderr]     Checking rill-core v0.5.0-beta.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `CommandSender` is never constructed
[INFO] [stdout]    --> src/queues/command.rs:18:12
[INFO] [stdout]     |
[INFO] [stdout]  18 | pub struct CommandSender<T> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:138:29
[INFO] [stdout]     |
[INFO] [stdout] 138 | #![cfg_attr(not(test), deny(unused))]
[INFO] [stdout]     |                             ^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `CommandReceiver` is never constructed
[INFO] [stdout]   --> src/queues/command.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct CommandReceiver<T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rill-core` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "77c624b94a9fbc3289a4b077a29924a3d293575ba66d174fca5193991711f09e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77c624b94a9fbc3289a4b077a29924a3d293575ba66d174fca5193991711f09e", kill_on_drop: false }`
[INFO] [stdout] 77c624b94a9fbc3289a4b077a29924a3d293575ba66d174fca5193991711f09e
