[INFO] cloning repository https://github.com/rickrain/rust-callbacks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rickrain/rust-callbacks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frickrain%2Frust-callbacks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frickrain%2Frust-callbacks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fdcbc90400049f221bb0f65863250f45f1ce8a84
[INFO] checking rickrain/rust-callbacks against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frickrain%2Frust-callbacks" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rickrain/rust-callbacks on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rickrain/rust-callbacks
[INFO] finished tweaking git repo https://github.com/rickrain/rust-callbacks
[INFO] tweaked toml for git repo https://github.com/rickrain/rust-callbacks written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rickrain/rust-callbacks 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f839eca1b2401227e3e24f12674fa59e38e080a9655996062732fb1b0dde35e9
[INFO] running `Command { std: "docker" "start" "-a" "f839eca1b2401227e3e24f12674fa59e38e080a9655996062732fb1b0dde35e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f839eca1b2401227e3e24f12674fa59e38e080a9655996062732fb1b0dde35e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f839eca1b2401227e3e24f12674fa59e38e080a9655996062732fb1b0dde35e9", kill_on_drop: false }`
[INFO] [stdout] f839eca1b2401227e3e24f12674fa59e38e080a9655996062732fb1b0dde35e9
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dd3b4b0dd776f184942838a92ac5ecbc6d22b7e2b9f54445afcbd43e2d8cac6
[INFO] running `Command { std: "docker" "start" "-a" "4dd3b4b0dd776f184942838a92ac5ecbc6d22b7e2b9f54445afcbd43e2d8cac6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking container_mgmt v0.1.0 (/opt/rustwide/workdir/crates/container_mgmt)
[INFO] [stdout] warning: unused import: `alloc::handle_alloc_error`
[INFO] [stdout]  --> crates/container_mgmt/src/lib.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{sync::mpsc, thread, alloc::handle_alloc_error, time::Duration};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Result` is never used
[INFO] [stdout]   --> crates/container_mgmt/src/lib.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Result<T> = std::result::Result<T, ContainerManagementError>;
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> crates/container_mgmt/src/lib.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 sender.send(format!("Container '{}' state changed", container_name));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 let _ = sender.send(format!("Container '{}' state changed", container_name));
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking orchestration v0.1.0 (/opt/rustwide/workdir/crates/orchestration)
[INFO] [stdout] warning: unused imports: `JoinHandle` and `sync::mpsc::Receiver`
[INFO] [stdout]  --> crates/orchestration/src/lib.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{thread::{self, JoinHandle}, sync::mpsc::Receiver};
[INFO] [stdout]   |                          ^^^^^^^^^^   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> crates/orchestration/src/lib.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let handle = thread::spawn(move || {
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]   --> crates/orchestration/src/lib.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |             while let Ok(message) = receiver.recv() {
[INFO] [stdout]    |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking messaging v0.1.0 (/opt/rustwide/workdir/crates/messaging)
[INFO] [stdout] warning: unused import: `OrchestrationError`
[INFO] [stdout]  --> crates/messaging/src/lib.rs:4:41
[INFO] [stdout]   |
[INFO] [stdout] 4 | use orchestration::{OrchestrationEngine,OrchestrationError};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> crates/messaging/src/iot_hub_device.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mut orchestration_engine = OrchestrationEngine::new();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking callbacks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.78s
[INFO] running `Command { std: "docker" "inspect" "4dd3b4b0dd776f184942838a92ac5ecbc6d22b7e2b9f54445afcbd43e2d8cac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd3b4b0dd776f184942838a92ac5ecbc6d22b7e2b9f54445afcbd43e2d8cac6", kill_on_drop: false }`
[INFO] [stdout] 4dd3b4b0dd776f184942838a92ac5ecbc6d22b7e2b9f54445afcbd43e2d8cac6