[INFO] cloning repository https://github.com/zhaoxu1943/rust_concentration
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhaoxu1943/rust_concentration" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaoxu1943%2Frust_concentration", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaoxu1943%2Frust_concentration'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ba040341979c32cf9f59bef7b3c1e2f56dfe81d
[INFO] checking zhaoxu1943/rust_concentration against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaoxu1943%2Frust_concentration" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhaoxu1943/rust_concentration on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zhaoxu1943/rust_concentration
[INFO] finished tweaking git repo https://github.com/zhaoxu1943/rust_concentration
[INFO] tweaked toml for git repo https://github.com/zhaoxu1943/rust_concentration written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/zhaoxu1943/rust_concentration already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5b7bafdfd5f2d706350e1bcba9c2fa830e921ba0d066b7a781406e9d17ea45d
[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" "f5b7bafdfd5f2d706350e1bcba9c2fa830e921ba0d066b7a781406e9d17ea45d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5b7bafdfd5f2d706350e1bcba9c2fa830e921ba0d066b7a781406e9d17ea45d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5b7bafdfd5f2d706350e1bcba9c2fa830e921ba0d066b7a781406e9d17ea45d", kill_on_drop: false }`
[INFO] [stdout] f5b7bafdfd5f2d706350e1bcba9c2fa830e921ba0d066b7a781406e9d17ea45d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1eea0bdd1618ed297a1c7359818c3ad3dc32590b2b7fcc902d16b6cf5e1e9ae
[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" "d1eea0bdd1618ed297a1c7359818c3ad3dc32590b2b7fcc902d16b6cf5e1e9ae", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_concentration v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "d1eea0bdd1618ed297a1c7359818c3ad3dc32590b2b7fcc902d16b6cf5e1e9ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1eea0bdd1618ed297a1c7359818c3ad3dc32590b2b7fcc902d16b6cf5e1e9ae", kill_on_drop: false }`
[INFO] [stdout] d1eea0bdd1618ed297a1c7359818c3ad3dc32590b2b7fcc902d16b6cf5e1e9ae