[INFO] fetching crate xtract 0.0.2...
[INFO] checking xtract-0.0.2 against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] extracting crate xtract 0.0.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate xtract 0.0.2 on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xtract 0.0.2
[INFO] finished tweaking crates.io crate xtract 0.0.2
[INFO] tweaked toml for crates.io crate xtract 0.0.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate xtract 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe19da493314f079ca7bf3f05b6a5ca5dec695b713f181d6ce5d436be13993d5
[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" "fe19da493314f079ca7bf3f05b6a5ca5dec695b713f181d6ce5d436be13993d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe19da493314f079ca7bf3f05b6a5ca5dec695b713f181d6ce5d436be13993d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe19da493314f079ca7bf3f05b6a5ca5dec695b713f181d6ce5d436be13993d5", kill_on_drop: false }`
[INFO] [stdout] fe19da493314f079ca7bf3f05b6a5ca5dec695b713f181d6ce5d436be13993d5
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] a5f2bc3edb3b17424c1ef5e3e74f82ad331e254c5a77d321668a152aebb630c6
[INFO] running `Command { std: "docker" "start" "-a" "a5f2bc3edb3b17424c1ef5e3e74f82ad331e254c5a77d321668a152aebb630c6", kill_on_drop: false }`
[INFO] [stderr]     Checking xtract v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "a5f2bc3edb3b17424c1ef5e3e74f82ad331e254c5a77d321668a152aebb630c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f2bc3edb3b17424c1ef5e3e74f82ad331e254c5a77d321668a152aebb630c6", kill_on_drop: false }`
[INFO] [stdout] a5f2bc3edb3b17424c1ef5e3e74f82ad331e254c5a77d321668a152aebb630c6