[INFO] cloning repository https://github.com/marinegor/polars_counter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marinegor/polars_counter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarinegor%2Fpolars_counter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarinegor%2Fpolars_counter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82dd8a2ea7de44f53d20d596931281a56ffddd36
[INFO] checking marinegor/polars_counter against master#bfc05d6b072585dfd0c792ec1b8728c08a3511fe for pr-154149
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarinegor%2Fpolars_counter" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/marinegor/polars_counter
[INFO] finished tweaking git repo https://github.com/marinegor/polars_counter
[INFO] tweaked toml for git repo https://github.com/marinegor/polars_counter written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/marinegor/polars_counter on toolchain bfc05d6b072585dfd0c792ec1b8728c08a3511fe
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfc05d6b072585dfd0c792ec1b8728c08a3511fe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/marinegor/polars_counter 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" "+bfc05d6b072585dfd0c792ec1b8728c08a3511fe" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bfc05d6b072585dfd0c792ec1b8728c08a3511fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 345d46ba7cf17f390710b718f584774201e2de5631f8e821ee4a22b0c3cc0398
[INFO] running `Command { std: "docker" "start" "-a" "345d46ba7cf17f390710b718f584774201e2de5631f8e821ee4a22b0c3cc0398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "345d46ba7cf17f390710b718f584774201e2de5631f8e821ee4a22b0c3cc0398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "345d46ba7cf17f390710b718f584774201e2de5631f8e821ee4a22b0c3cc0398", kill_on_drop: false }`
[INFO] [stdout] 345d46ba7cf17f390710b718f584774201e2de5631f8e821ee4a22b0c3cc0398
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bfc05d6b072585dfd0c792ec1b8728c08a3511fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88b741675c0e384e0562edc1980dca907d10a8746138d13e41d5f15a0630af60
[INFO] running `Command { std: "docker" "start" "-a" "88b741675c0e384e0562edc1980dca907d10a8746138d13e41d5f15a0630af60", kill_on_drop: false }`
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[INFO] [stderr]     Checking polars-counter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `CounterError` is never constructed
[INFO] [stdout]   --> src/expressions.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub struct CounterError {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CounterError` is never constructed
[INFO] [stdout]   --> src/expressions.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub struct CounterError {
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5m 13s
[INFO] running `Command { std: "docker" "inspect" "88b741675c0e384e0562edc1980dca907d10a8746138d13e41d5f15a0630af60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88b741675c0e384e0562edc1980dca907d10a8746138d13e41d5f15a0630af60", kill_on_drop: false }`
[INFO] [stdout] 88b741675c0e384e0562edc1980dca907d10a8746138d13e41d5f15a0630af60