[INFO] fetching crate mockgrep 0.1.0...
[INFO] checking mockgrep-0.1.0 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] extracting crate mockgrep 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mockgrep 0.1.0 on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mockgrep 0.1.0
[INFO] finished tweaking crates.io crate mockgrep 0.1.0
[INFO] tweaked toml for crates.io crate mockgrep 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mockgrep 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+4a23c45c7893f1416456144e3883cc48ea91722e" "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] 51447a58f697b582954f9cadfe82e793bae0d560fbaf2d68a97d4bf45b6e7e4b
[INFO] running `Command { std: "docker" "start" "-a" "51447a58f697b582954f9cadfe82e793bae0d560fbaf2d68a97d4bf45b6e7e4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51447a58f697b582954f9cadfe82e793bae0d560fbaf2d68a97d4bf45b6e7e4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51447a58f697b582954f9cadfe82e793bae0d560fbaf2d68a97d4bf45b6e7e4b", kill_on_drop: false }`
[INFO] [stdout] 51447a58f697b582954f9cadfe82e793bae0d560fbaf2d68a97d4bf45b6e7e4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63036fcdae3217faa2003a4847c37d38575e88b4197516e836b28175de34b52a
[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" "63036fcdae3217faa2003a4847c37d38575e88b4197516e836b28175de34b52a", kill_on_drop: false }`
[INFO] [stderr]     Checking mockgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "63036fcdae3217faa2003a4847c37d38575e88b4197516e836b28175de34b52a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63036fcdae3217faa2003a4847c37d38575e88b4197516e836b28175de34b52a", kill_on_drop: false }`
[INFO] [stdout] 63036fcdae3217faa2003a4847c37d38575e88b4197516e836b28175de34b52a