[INFO] fetching crate nuki 0.2.2...
[INFO] checking nuki-0.2.2 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate nuki 0.2.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nuki 0.2.2 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nuki 0.2.2
[INFO] finished tweaking crates.io crate nuki 0.2.2
[INFO] tweaked toml for crates.io crate nuki 0.2.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c5912666ff161c0868b2d3be5f7dad7eff41df4effbd29999c3095e825f9b271
[INFO] running `Command { std: "docker" "start" "-a" "c5912666ff161c0868b2d3be5f7dad7eff41df4effbd29999c3095e825f9b271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5912666ff161c0868b2d3be5f7dad7eff41df4effbd29999c3095e825f9b271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5912666ff161c0868b2d3be5f7dad7eff41df4effbd29999c3095e825f9b271", kill_on_drop: false }`
[INFO] [stdout] c5912666ff161c0868b2d3be5f7dad7eff41df4effbd29999c3095e825f9b271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac7b2ce96e98e6b6a0d12368247f8e0e26b032cdc9bc58d60b57da609985b394
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ac7b2ce96e98e6b6a0d12368247f8e0e26b032cdc9bc58d60b57da609985b394", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling nuki-sys v4.3.1+1
[INFO] [stderr]     Checking nuki v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]     --> src/property_sheet.rs:1981:21
[INFO] [stdout]      |
[INFO] [stdout] 1981 |     use std::sync::{Mutex, RwLock};
[INFO] [stdout]      |                     ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_uid`
[INFO] [stdout]     --> src/lib.rs:8167:4
[INFO] [stdout]      |
[INFO] [stdout] 8167 | fn make_uid() -> usize {
[INFO] [stdout]      |    ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `base_mut`
[INFO] [stdout]    --> src/object_pool.rs:283:12
[INFO] [stdout]     |
[INFO] [stdout] 283 |         fn base_mut(&mut self) -> &mut PoolObjectBase {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `base_mut`
[INFO] [stdout]    --> src/object_pool.rs:299:12
[INFO] [stdout]     |
[INFO] [stdout] 299 |         fn base_mut(&mut self) -> &mut PoolObjectBase {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_uid`
[INFO] [stdout]     --> src/lib.rs:8167:4
[INFO] [stdout]      |
[INFO] [stdout] 8167 | fn make_uid() -> usize {
[INFO] [stdout]      |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.14s
[INFO] running `Command { std: "docker" "inspect" "ac7b2ce96e98e6b6a0d12368247f8e0e26b032cdc9bc58d60b57da609985b394", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac7b2ce96e98e6b6a0d12368247f8e0e26b032cdc9bc58d60b57da609985b394", kill_on_drop: false }`
[INFO] [stdout] ac7b2ce96e98e6b6a0d12368247f8e0e26b032cdc9bc58d60b57da609985b394