[INFO] fetching crate serde_arrow 0.12.0-rc.1...
[INFO] checking serde_arrow-0.12.0-rc.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate serde_arrow 0.12.0-rc.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate serde_arrow 0.12.0-rc.1 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_arrow 0.12.0-rc.1
[INFO] finished tweaking crates.io crate serde_arrow 0.12.0-rc.1
[INFO] tweaked toml for crates.io crate serde_arrow 0.12.0-rc.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
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[INFO] [stderr]      Locking 249 packages to latest compatible versions
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcec2b7fbcf4ea56ef0b268f6bdec51d5c7cd1f5f984bf94fddb0ea736732eeb
[INFO] running `Command { std: "docker" "start" "-a" "bcec2b7fbcf4ea56ef0b268f6bdec51d5c7cd1f5f984bf94fddb0ea736732eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcec2b7fbcf4ea56ef0b268f6bdec51d5c7cd1f5f984bf94fddb0ea736732eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcec2b7fbcf4ea56ef0b268f6bdec51d5c7cd1f5f984bf94fddb0ea736732eeb", kill_on_drop: false }`
[INFO] [stdout] bcec2b7fbcf4ea56ef0b268f6bdec51d5c7cd1f5f984bf94fddb0ea736732eeb
[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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49ca3114cd0817cf80f24b1bebbbfb167eb6f7c5b8164110fdf0f14a634fb065
[INFO] running `Command { std: "docker" "start" "-a" "49ca3114cd0817cf80f24b1bebbbfb167eb6f7c5b8164110fdf0f14a634fb065", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling serde v1.0.210
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[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.40s
[INFO] running `Command { std: "docker" "inspect" "49ca3114cd0817cf80f24b1bebbbfb167eb6f7c5b8164110fdf0f14a634fb065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ca3114cd0817cf80f24b1bebbbfb167eb6f7c5b8164110fdf0f14a634fb065", kill_on_drop: false }`
[INFO] [stdout] 49ca3114cd0817cf80f24b1bebbbfb167eb6f7c5b8164110fdf0f14a634fb065