[INFO] fetching crate serde_stacker 0.1.4... [INFO] checking serde_stacker-0.1.4 against beta for pr-78714 [INFO] extracting crate serde_stacker 0.1.4 into /workspace/builds/worker-13/source [INFO] validating manifest of crates.io crate serde_stacker 0.1.4 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 serde_stacker 0.1.4 [INFO] finished tweaking crates.io crate serde_stacker 0.1.4 [INFO] tweaked toml for crates.io crate serde_stacker 0.1.4 written to /workspace/builds/worker-13/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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] ec7ba93eef3c282b0e01b4a21784e9096eb58dbeb0da68523afc924d76cb8b33 [INFO] running `Command { std: "docker" "start" "-a" "ec7ba93eef3c282b0e01b4a21784e9096eb58dbeb0da68523afc924d76cb8b33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ec7ba93eef3c282b0e01b4a21784e9096eb58dbeb0da68523afc924d76cb8b33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec7ba93eef3c282b0e01b4a21784e9096eb58dbeb0da68523afc924d76cb8b33", kill_on_drop: false }` [INFO] [stdout] ec7ba93eef3c282b0e01b4a21784e9096eb58dbeb0da68523afc924d76cb8b33 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] f6a77e3902afa51be5d9876a394984c888c394bb55f7e38ead9358e27f295126 [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" "f6a77e3902afa51be5d9876a394984c888c394bb55f7e38ead9358e27f295126", kill_on_drop: false }` [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Checking stacker v0.1.12 [INFO] [stderr] Checking serde_stacker v0.1.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.17s [INFO] running `Command { std: "docker" "inspect" "f6a77e3902afa51be5d9876a394984c888c394bb55f7e38ead9358e27f295126", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f6a77e3902afa51be5d9876a394984c888c394bb55f7e38ead9358e27f295126", kill_on_drop: false }` [INFO] [stdout] f6a77e3902afa51be5d9876a394984c888c394bb55f7e38ead9358e27f295126