[INFO] fetching crate kubectx 1.0.3...
[INFO] checking kubectx-1.0.3 against beta for pr-78714
[INFO] extracting crate kubectx 1.0.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate kubectx 1.0.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kubectx 1.0.3
[INFO] finished tweaking crates.io crate kubectx 1.0.3
[INFO] tweaked toml for crates.io crate kubectx 1.0.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e4fbef7ee625b5ea562509832562e8d4234b7f3772fe4a0e0b6f3db2dad59e7
[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" "3e4fbef7ee625b5ea562509832562e8d4234b7f3772fe4a0e0b6f3db2dad59e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e4fbef7ee625b5ea562509832562e8d4234b7f3772fe4a0e0b6f3db2dad59e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e4fbef7ee625b5ea562509832562e8d4234b7f3772fe4a0e0b6f3db2dad59e7", kill_on_drop: false }`
[INFO] [stdout] 3e4fbef7ee625b5ea562509832562e8d4234b7f3772fe4a0e0b6f3db2dad59e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 505ca84e6f5a7b5c897eb607cfebcdd394df02e4024e7148c4df9ded2495a3ee
[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" "505ca84e6f5a7b5c897eb607cfebcdd394df02e4024e7148c4df9ded2495a3ee", kill_on_drop: false }`
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking console v0.13.0
[INFO] [stderr]     Checking dialoguer v0.1.0
[INFO] [stderr]     Checking kubectx v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "505ca84e6f5a7b5c897eb607cfebcdd394df02e4024e7148c4df9ded2495a3ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "505ca84e6f5a7b5c897eb607cfebcdd394df02e4024e7148c4df9ded2495a3ee", kill_on_drop: false }`
[INFO] [stdout] 505ca84e6f5a7b5c897eb607cfebcdd394df02e4024e7148c4df9ded2495a3ee