[INFO] fetching crate blynk_io 0.3.0...
[INFO] checking blynk_io-0.3.0 against try#de0e80659cee4f27282e60d63bbb8c5271a0d147 for pr-129392
[INFO] extracting crate blynk_io 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate blynk_io 0.3.0 on toolchain de0e80659cee4f27282e60d63bbb8c5271a0d147
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "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-7-tc2/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" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 002fe196a2f8af015c38d128e978ee935553131e66863a0c7ecc842979f840b4
[INFO] running `Command { std: "docker" "start" "-a" "002fe196a2f8af015c38d128e978ee935553131e66863a0c7ecc842979f840b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "002fe196a2f8af015c38d128e978ee935553131e66863a0c7ecc842979f840b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "002fe196a2f8af015c38d128e978ee935553131e66863a0c7ecc842979f840b4", kill_on_drop: false }`
[INFO] [stdout] 002fe196a2f8af015c38d128e978ee935553131e66863a0c7ecc842979f840b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1191ef27e6217838a31e2deccaa86c0ed600c0b413abdf4aa97abe0927efd40f
[INFO] running `Command { std: "docker" "start" "-a" "1191ef27e6217838a31e2deccaa86c0ed600c0b413abdf4aa97abe0927efd40f", 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 restruct_derive v0.1.2
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[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 11.72s
[INFO] running `Command { std: "docker" "inspect" "1191ef27e6217838a31e2deccaa86c0ed600c0b413abdf4aa97abe0927efd40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1191ef27e6217838a31e2deccaa86c0ed600c0b413abdf4aa97abe0927efd40f", kill_on_drop: false }`
[INFO] [stdout] 1191ef27e6217838a31e2deccaa86c0ed600c0b413abdf4aa97abe0927efd40f