[INFO] fetching crate ranked_voting 0.3.0...
[INFO] checking ranked_voting-0.3.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate ranked_voting 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ranked_voting 0.3.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ranked_voting 0.3.0
[INFO] finished tweaking crates.io crate ranked_voting 0.3.0
[INFO] tweaked toml for crates.io crate ranked_voting 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 55 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.22.0 (latest: v0.24.1)
[INFO] [stderr]       Adding env_logger v0.9.3 (latest: v0.11.5)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.1.0)
[INFO] [stderr]       Adding gimli v0.29.0 (latest: v0.31.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.4.0)
[INFO] [stderr]       Adding miniz_oxide v0.7.4 (latest: v0.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cff6f7589d90827e4a6396ec87708a203a51a3ee0e7a5b69df2c98360e21c9f0
[INFO] running `Command { std: "docker" "start" "-a" "cff6f7589d90827e4a6396ec87708a203a51a3ee0e7a5b69df2c98360e21c9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cff6f7589d90827e4a6396ec87708a203a51a3ee0e7a5b69df2c98360e21c9f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff6f7589d90827e4a6396ec87708a203a51a3ee0e7a5b69df2c98360e21c9f0", kill_on_drop: false }`
[INFO] [stdout] cff6f7589d90827e4a6396ec87708a203a51a3ee0e7a5b69df2c98360e21c9f0
[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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 600cfcb372f03c1ad1ac6db65a041f655edab875668aa68e6cf183c86323f962
[INFO] running `Command { std: "docker" "start" "-a" "600cfcb372f03c1ad1ac6db65a041f655edab875668aa68e6cf183c86323f962", kill_on_drop: false }`
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking tokio v1.40.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking sha256 v1.5.0
[INFO] [stderr]     Checking ranked_voting v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `VoteSignature` is never constructed
[INFO] [stdout]    --> src/lib.rs:198:8
[INFO] [stdout]     |
[INFO] [stdout] 198 | struct VoteSignature {
[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]     Checking regex v1.10.6
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stdout] warning: struct `VoteSignature` is never constructed
[INFO] [stdout]    --> src/lib.rs:198:8
[INFO] [stdout]     |
[INFO] [stdout] 198 | struct VoteSignature {
[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 7.14s
[INFO] running `Command { std: "docker" "inspect" "600cfcb372f03c1ad1ac6db65a041f655edab875668aa68e6cf183c86323f962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "600cfcb372f03c1ad1ac6db65a041f655edab875668aa68e6cf183c86323f962", kill_on_drop: false }`
[INFO] [stdout] 600cfcb372f03c1ad1ac6db65a041f655edab875668aa68e6cf183c86323f962