[INFO] fetching crate rustypipes 0.1.1...
[INFO] checking rustypipes-0.1.1 against beta for pr-78714
[INFO] extracting crate rustypipes 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rustypipes 0.1.1 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 rustypipes 0.1.1
[INFO] finished tweaking crates.io crate rustypipes 0.1.1
[INFO] tweaked toml for crates.io crate rustypipes 0.1.1 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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9d65e44a70cbadf2ba9d45cca7267f9545afde8616fdc8586d9d64dc8b51551d
[INFO] running `Command { std: "docker" "start" "-a" "9d65e44a70cbadf2ba9d45cca7267f9545afde8616fdc8586d9d64dc8b51551d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d65e44a70cbadf2ba9d45cca7267f9545afde8616fdc8586d9d64dc8b51551d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d65e44a70cbadf2ba9d45cca7267f9545afde8616fdc8586d9d64dc8b51551d", kill_on_drop: false }`
[INFO] [stdout] 9d65e44a70cbadf2ba9d45cca7267f9545afde8616fdc8586d9d64dc8b51551d
[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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c047ba3be0573abf8eabb17c0c956252a85b5a8dc346854bc88007721f6d14b
[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" "8c047ba3be0573abf8eabb17c0c956252a85b5a8dc346854bc88007721f6d14b", 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] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking unix-named-pipe v0.2.0
[INFO] [stderr]     Checking rustypipes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `Command { std: "docker" "inspect" "8c047ba3be0573abf8eabb17c0c956252a85b5a8dc346854bc88007721f6d14b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c047ba3be0573abf8eabb17c0c956252a85b5a8dc346854bc88007721f6d14b", kill_on_drop: false }`
[INFO] [stdout] 8c047ba3be0573abf8eabb17c0c956252a85b5a8dc346854bc88007721f6d14b