[INFO] fetching crate diffr 0.1.4...
[INFO] checking diffr-0.1.4 against beta for pr-78714
[INFO] extracting crate diffr 0.1.4 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate diffr 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 diffr 0.1.4
[INFO] finished tweaking crates.io crate diffr 0.1.4
[INFO] tweaked toml for crates.io crate diffr 0.1.4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate diffr 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1097f8dc0a3831aa0fb98572060bceea30bc0009bb5520de97cac1df6eff1eff
[INFO] running `Command { std: "docker" "start" "-a" "1097f8dc0a3831aa0fb98572060bceea30bc0009bb5520de97cac1df6eff1eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1097f8dc0a3831aa0fb98572060bceea30bc0009bb5520de97cac1df6eff1eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1097f8dc0a3831aa0fb98572060bceea30bc0009bb5520de97cac1df6eff1eff", kill_on_drop: false }`
[INFO] [stdout] 1097f8dc0a3831aa0fb98572060bceea30bc0009bb5520de97cac1df6eff1eff
[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] 1bade68c07eade880c4e4ad06e292858fb50785ad87ed387b2ecb4d052db996b
[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" "1bade68c07eade880c4e4ad06e292858fb50785ad87ed387b2ecb4d052db996b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking diffr-lib v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking diffr v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.51s
[INFO] running `Command { std: "docker" "inspect" "1bade68c07eade880c4e4ad06e292858fb50785ad87ed387b2ecb4d052db996b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bade68c07eade880c4e4ad06e292858fb50785ad87ed387b2ecb4d052db996b", kill_on_drop: false }`
[INFO] [stdout] 1bade68c07eade880c4e4ad06e292858fb50785ad87ed387b2ecb4d052db996b