[INFO] fetching crate derive-diff 0.2.5...
[INFO] checking derive-diff-0.2.5 against beta for pr-78714
[INFO] extracting crate derive-diff 0.2.5 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate derive-diff 0.2.5 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 derive-diff 0.2.5
[INFO] finished tweaking crates.io crate derive-diff 0.2.5
[INFO] tweaked toml for crates.io crate derive-diff 0.2.5 written to /workspace/builds/worker-5/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] [stderr]     Blocking waiting for file lock on package cache
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] fd3ea27f5a9f9ee71cc3eb94d3c604946dc524fba29bf3386cdfb9ac9a4062fa
[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" "fd3ea27f5a9f9ee71cc3eb94d3c604946dc524fba29bf3386cdfb9ac9a4062fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd3ea27f5a9f9ee71cc3eb94d3c604946dc524fba29bf3386cdfb9ac9a4062fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3ea27f5a9f9ee71cc3eb94d3c604946dc524fba29bf3386cdfb9ac9a4062fa", kill_on_drop: false }`
[INFO] [stdout] fd3ea27f5a9f9ee71cc3eb94d3c604946dc524fba29bf3386cdfb9ac9a4062fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 6e6e399d88c6c639819606e7b89a05a721cf2f30d38322ed0473c45bd5229515
[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" "6e6e399d88c6c639819606e7b89a05a721cf2f30d38322ed0473c45bd5229515", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking struct-diff v0.2.3
[INFO] [stderr]     Checking derive-diff v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.49s
[INFO] running `Command { std: "docker" "inspect" "6e6e399d88c6c639819606e7b89a05a721cf2f30d38322ed0473c45bd5229515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e6e399d88c6c639819606e7b89a05a721cf2f30d38322ed0473c45bd5229515", kill_on_drop: false }`
[INFO] [stdout] 6e6e399d88c6c639819606e7b89a05a721cf2f30d38322ed0473c45bd5229515