[INFO] fetching crate mut-cell 0.0.0...
[INFO] checking mut-cell-0.0.0 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] extracting crate mut-cell 0.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mut-cell 0.0.0 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 mut-cell 0.0.0
[INFO] finished tweaking crates.io crate mut-cell 0.0.0
[INFO] tweaked toml for crates.io crate mut-cell 0.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] [stdout] 288c5e9b19cf164c983808ee5e27b3f3d4a6a74cd2009dddbb3a1a4ab05b51bb
[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" "288c5e9b19cf164c983808ee5e27b3f3d4a6a74cd2009dddbb3a1a4ab05b51bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "288c5e9b19cf164c983808ee5e27b3f3d4a6a74cd2009dddbb3a1a4ab05b51bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "288c5e9b19cf164c983808ee5e27b3f3d4a6a74cd2009dddbb3a1a4ab05b51bb", kill_on_drop: false }`
[INFO] [stdout] 288c5e9b19cf164c983808ee5e27b3f3d4a6a74cd2009dddbb3a1a4ab05b51bb
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] df924879b76f255fdfcd82f9d94680cf6ead457e57abed1dd816c2864606c428
[INFO] running `Command { std: "docker" "start" "-a" "df924879b76f255fdfcd82f9d94680cf6ead457e57abed1dd816c2864606c428", kill_on_drop: false }`
[INFO] [stderr]     Checking mut-cell v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "df924879b76f255fdfcd82f9d94680cf6ead457e57abed1dd816c2864606c428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df924879b76f255fdfcd82f9d94680cf6ead457e57abed1dd816c2864606c428", kill_on_drop: false }`
[INFO] [stdout] df924879b76f255fdfcd82f9d94680cf6ead457e57abed1dd816c2864606c428