[INFO] fetching crate bufferpool 0.1.7...
[INFO] checking bufferpool-0.1.7 against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] extracting crate bufferpool 0.1.7 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bufferpool 0.1.7 on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bufferpool 0.1.7
[INFO] finished tweaking crates.io crate bufferpool 0.1.7
[INFO] tweaked toml for crates.io crate bufferpool 0.1.7 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate bufferpool 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9a3b83d09b981b2a4a74efff4d3eb9df4fec339c3a990a4b93fb721c55752e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e9a3b83d09b981b2a4a74efff4d3eb9df4fec339c3a990a4b93fb721c55752e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9a3b83d09b981b2a4a74efff4d3eb9df4fec339c3a990a4b93fb721c55752e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a3b83d09b981b2a4a74efff4d3eb9df4fec339c3a990a4b93fb721c55752e1", kill_on_drop: false }`
[INFO] [stdout] e9a3b83d09b981b2a4a74efff4d3eb9df4fec339c3a990a4b93fb721c55752e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c723efbc231ac5ffea55a03a9b65fecfae735d4e5cc18029905ac75fb384750
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7c723efbc231ac5ffea55a03a9b65fecfae735d4e5cc18029905ac75fb384750", kill_on_drop: false }`
[INFO] [stderr]     Checking bufferpool v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "7c723efbc231ac5ffea55a03a9b65fecfae735d4e5cc18029905ac75fb384750", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c723efbc231ac5ffea55a03a9b65fecfae735d4e5cc18029905ac75fb384750", kill_on_drop: false }`
[INFO] [stdout] 7c723efbc231ac5ffea55a03a9b65fecfae735d4e5cc18029905ac75fb384750