[INFO] fetching crate ptr-union 2.1.0...
[INFO] checking ptr-union-2.1.0 against beta for pr-78714
[INFO] extracting crate ptr-union 2.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ptr-union 2.1.0 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 ptr-union 2.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ptr-union 2.1.0
[INFO] tweaked toml for crates.io crate ptr-union 2.1.0 written to /workspace/builds/worker-4/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-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a50c829da8ac4a8507da1f72fcadc238bd86d9d1cf1221dad17dcf7d0fe8d94a
[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" "a50c829da8ac4a8507da1f72fcadc238bd86d9d1cf1221dad17dcf7d0fe8d94a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a50c829da8ac4a8507da1f72fcadc238bd86d9d1cf1221dad17dcf7d0fe8d94a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a50c829da8ac4a8507da1f72fcadc238bd86d9d1cf1221dad17dcf7d0fe8d94a", kill_on_drop: false }`
[INFO] [stdout] a50c829da8ac4a8507da1f72fcadc238bd86d9d1cf1221dad17dcf7d0fe8d94a
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69b52100c85b2a6790382a04c5a48e82267b17e344cd029106c29ebbfa98dc3b
[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" "69b52100c85b2a6790382a04c5a48e82267b17e344cd029106c29ebbfa98dc3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling erasable v1.2.1
[INFO] [stderr]    Compiling ptr-union v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "69b52100c85b2a6790382a04c5a48e82267b17e344cd029106c29ebbfa98dc3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b52100c85b2a6790382a04c5a48e82267b17e344cd029106c29ebbfa98dc3b", kill_on_drop: false }`
[INFO] [stdout] 69b52100c85b2a6790382a04c5a48e82267b17e344cd029106c29ebbfa98dc3b