[INFO] updating cached repository https://github.com/LENAX/decoupled_components
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7905338b8878836cc92b0cb211ad7408b909f89c
[INFO] checking LENAX/decoupled_components/7905338b8878836cc92b0cb211ad7408b909f89c against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLENAX%2Fdecoupled_components" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LENAX/decoupled_components on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LENAX/decoupled_components
[INFO] finished tweaking git repo https://github.com/LENAX/decoupled_components
[INFO] tweaked toml for git repo https://github.com/LENAX/decoupled_components written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LENAX/decoupled_components 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7cb8d2f0552f87cb1f62918111cfef17a12f856b5c5ad39b5d95cc9e5246835
[INFO] running `Command { std: "docker" "start" "-a" "a7cb8d2f0552f87cb1f62918111cfef17a12f856b5c5ad39b5d95cc9e5246835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7cb8d2f0552f87cb1f62918111cfef17a12f856b5c5ad39b5d95cc9e5246835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7cb8d2f0552f87cb1f62918111cfef17a12f856b5c5ad39b5d95cc9e5246835", kill_on_drop: false }`
[INFO] [stdout] a7cb8d2f0552f87cb1f62918111cfef17a12f856b5c5ad39b5d95cc9e5246835
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a77a22aac46e6dc16764a09f9600f27fb44d5bd7587766e070a6c9001681905c
[INFO] running `Command { std: "docker" "start" "-a" "a77a22aac46e6dc16764a09f9600f27fb44d5bd7587766e070a6c9001681905c", kill_on_drop: false }`
[INFO] [stderr]     Checking decoupled_components v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `describe` is never used
[INFO] [stdout]    --> src/main.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout] 177 | trait Queue {
[INFO] [stdout]     |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn describe(&self);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `describe` is never used
[INFO] [stdout]    --> src/main.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout] 177 | trait Queue {
[INFO] [stdout]     |       ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 180 |     fn describe(&self);
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rate_limiter` and `task_receiver` are never read
[INFO] [stdout]    --> src/main.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 185 | struct TaskQueueA<RL: RateLimiter, TR: TaskReceiver> {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 186 |     queue: Vec<Task>,
[INFO] [stdout] 187 |     rate_limiter: RL,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 188 |     task_receiver: TR
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rate_limiter` and `task_receiver` are never read
[INFO] [stdout]    --> src/main.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 185 | struct TaskQueueA<RL: RateLimiter, TR: TaskReceiver> {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 186 |     queue: Vec<Task>,
[INFO] [stdout] 187 |     rate_limiter: RL,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 188 |     task_receiver: TR
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rate_limiter` and `task_receiver` are never read
[INFO] [stdout]    --> src/main.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 204 | struct TaskQueueB<RL: RateLimiter, TR: TaskReceiver> {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 205 |     queue: Vec<Task>,
[INFO] [stdout] 206 |     rate_limiter: RL,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 207 |     task_receiver: TR
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rate_limiter` and `task_receiver` are never read
[INFO] [stdout]    --> src/main.rs:206:5
[INFO] [stdout]     |
[INFO] [stdout] 204 | struct TaskQueueB<RL: RateLimiter, TR: TaskReceiver> {
[INFO] [stdout]     |        ---------- fields in this struct
[INFO] [stdout] 205 |     queue: Vec<Task>,
[INFO] [stdout] 206 |     rate_limiter: RL,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 207 |     task_receiver: TR
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "a77a22aac46e6dc16764a09f9600f27fb44d5bd7587766e070a6c9001681905c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a77a22aac46e6dc16764a09f9600f27fb44d5bd7587766e070a6c9001681905c", kill_on_drop: false }`
[INFO] [stdout] a77a22aac46e6dc16764a09f9600f27fb44d5bd7587766e070a6c9001681905c