[INFO] fetching crate blynk_io 0.3.0...
[INFO] checking blynk_io-0.3.0 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate blynk_io 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate blynk_io 0.3.0 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blynk_io 0.3.0
[INFO] finished tweaking crates.io crate blynk_io 0.3.0
[INFO] tweaked toml for crates.io crate blynk_io 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate blynk_io 0.3.0 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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smol-potat v1.1.2
[INFO] [stderr]   Downloaded restruct_derive v0.1.2
[INFO] [stderr]   Downloaded async-process v1.3.0
[INFO] [stderr]   Downloaded async-net v1.6.1
[INFO] [stderr]   Downloaded restruct v0.1.2
[INFO] [stderr]   Downloaded async-io v1.6.0
[INFO] [stderr]   Downloaded smol-potat-macro v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb0ec89a07c90df5af2bba9991274ef108b734ebb791a83118496cbe3e248afb
[INFO] running `Command { std: "docker" "start" "-a" "bb0ec89a07c90df5af2bba9991274ef108b734ebb791a83118496cbe3e248afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb0ec89a07c90df5af2bba9991274ef108b734ebb791a83118496cbe3e248afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb0ec89a07c90df5af2bba9991274ef108b734ebb791a83118496cbe3e248afb", kill_on_drop: false }`
[INFO] [stdout] bb0ec89a07c90df5af2bba9991274ef108b734ebb791a83118496cbe3e248afb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be2b4a83dd17367907401ff44a6f5f42a5db9f76d048e71c281b6e2a8ceb919a
[INFO] running `Command { std: "docker" "start" "-a" "be2b4a83dd17367907401ff44a6f5f42a5db9f76d048e71c281b6e2a8ceb919a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking quote v1.0.15
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling restruct v0.1.2
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling restruct_derive v0.1.2
[INFO] [stderr]    Compiling num_enum_derive v0.5.6
[INFO] [stderr]     Checking num_enum v0.5.6
[INFO] [stderr]     Checking blynk_io v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ClientError` is never constructed
[INFO] [stdout]   --> src/./client.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct ClientError;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClientError` is never constructed
[INFO] [stdout]   --> src/./client.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct ClientError;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.62s
[INFO] running `Command { std: "docker" "inspect" "be2b4a83dd17367907401ff44a6f5f42a5db9f76d048e71c281b6e2a8ceb919a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be2b4a83dd17367907401ff44a6f5f42a5db9f76d048e71c281b6e2a8ceb919a", kill_on_drop: false }`
[INFO] [stdout] be2b4a83dd17367907401ff44a6f5f42a5db9f76d048e71c281b6e2a8ceb919a