[INFO] fetching crate open 1.4.0...
[INFO] checking open-1.4.0 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate open 1.4.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate open 1.4.0 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate open 1.4.0
[INFO] finished tweaking crates.io crate open 1.4.0
[INFO] tweaked toml for crates.io crate open 1.4.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate open 1.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f695560d879a2d674f891e09fc6696793686af8c0dd9318527227322c4a6c3e
[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" "4f695560d879a2d674f891e09fc6696793686af8c0dd9318527227322c4a6c3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f695560d879a2d674f891e09fc6696793686af8c0dd9318527227322c4a6c3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f695560d879a2d674f891e09fc6696793686af8c0dd9318527227322c4a6c3e", kill_on_drop: false }`
[INFO] [stdout] 4f695560d879a2d674f891e09fc6696793686af8c0dd9318527227322c4a6c3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52f3d94aeb367fbe67cd6b79e97b7a935dfd88f4b9f831cf5daad931468c4b36
[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" "52f3d94aeb367fbe67cd6b79e97b7a935dfd88f4b9f831cf5daad931468c4b36", kill_on_drop: false }`
[INFO] [stderr]     Checking open v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "52f3d94aeb367fbe67cd6b79e97b7a935dfd88f4b9f831cf5daad931468c4b36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52f3d94aeb367fbe67cd6b79e97b7a935dfd88f4b9f831cf5daad931468c4b36", kill_on_drop: false }`
[INFO] [stdout] 52f3d94aeb367fbe67cd6b79e97b7a935dfd88f4b9f831cf5daad931468c4b36