[INFO] fetching crate rust-concurrent 1.3.0...
[INFO] building rust-concurrent-1.3.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate rust-concurrent 1.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rust-concurrent 1.3.0
[INFO] finished tweaking crates.io crate rust-concurrent 1.3.0
[INFO] tweaked toml for crates.io crate rust-concurrent 1.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-concurrent 1.3.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust-concurrent 1.3.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serial_test v3.0.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d575a592e40f4daf382ce84dd12a2a370324a6f5d9cf41c96e91be4423276dfc
[INFO] running `Command { std: "docker" "start" "-a" "d575a592e40f4daf382ce84dd12a2a370324a6f5d9cf41c96e91be4423276dfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d575a592e40f4daf382ce84dd12a2a370324a6f5d9cf41c96e91be4423276dfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d575a592e40f4daf382ce84dd12a2a370324a6f5d9cf41c96e91be4423276dfc", kill_on_drop: false }`
[INFO] [stdout] d575a592e40f4daf382ce84dd12a2a370324a6f5d9cf41c96e91be4423276dfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01bff9f9e8e4be37a45802f51ea22d2b5c2a9a77416c082061fd313a6d94f67a
[INFO] running `Command { std: "docker" "start" "-a" "01bff9f9e8e4be37a45802f51ea22d2b5c2a9a77416c082061fd313a6d94f67a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rust-concurrent v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `style_name` is never read
[INFO] [stdout]   --> src/progress/style.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct ProgressStyleInfo {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 27 |     pub style_name: &'static str,
[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 1m 21s
[INFO] running `Command { std: "docker" "inspect" "01bff9f9e8e4be37a45802f51ea22d2b5c2a9a77416c082061fd313a6d94f67a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01bff9f9e8e4be37a45802f51ea22d2b5c2a9a77416c082061fd313a6d94f67a", kill_on_drop: false }`
[INFO] [stdout] 01bff9f9e8e4be37a45802f51ea22d2b5c2a9a77416c082061fd313a6d94f67a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c14d99dd12ae7fb04c1ff40512980479e286980ec519f9f279ba70857662261
[INFO] running `Command { std: "docker" "start" "-a" "9c14d99dd12ae7fb04c1ff40512980479e286980ec519f9f279ba70857662261", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-concurrent v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `style_name` is never read
[INFO] [stdout]   --> src/progress/style.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct ProgressStyleInfo {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 27 |     pub style_name: &'static str,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "9c14d99dd12ae7fb04c1ff40512980479e286980ec519f9f279ba70857662261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c14d99dd12ae7fb04c1ff40512980479e286980ec519f9f279ba70857662261", kill_on_drop: false }`
[INFO] [stdout] 9c14d99dd12ae7fb04c1ff40512980479e286980ec519f9f279ba70857662261