[INFO] fetching crate serde_repr 0.1.6...
[INFO] checking serde_repr-0.1.6 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate serde_repr 0.1.6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate serde_repr 0.1.6 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 crates.io crate serde_repr 0.1.6
[INFO] finished tweaking crates.io crate serde_repr 0.1.6
[INFO] tweaked toml for crates.io crate serde_repr 0.1.6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 061f661f1b8a387dea916a3982c3a5f633de66551f730fe52355626021fc9b0a
[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" "061f661f1b8a387dea916a3982c3a5f633de66551f730fe52355626021fc9b0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "061f661f1b8a387dea916a3982c3a5f633de66551f730fe52355626021fc9b0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "061f661f1b8a387dea916a3982c3a5f633de66551f730fe52355626021fc9b0a", kill_on_drop: false }`
[INFO] [stdout] 061f661f1b8a387dea916a3982c3a5f633de66551f730fe52355626021fc9b0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 8bf7460b62ef0e095082fc2cda3dc45f86c1f35b7c2a92d61afa7296dbc0a96d
[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" "8bf7460b62ef0e095082fc2cda3dc45f86c1f35b7c2a92d61afa7296dbc0a96d", kill_on_drop: false }`
[INFO] [stderr]    Compiling trybuild v1.0.35
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]     Checking dissimilar v1.0.2
[INFO] [stderr]    Compiling serde_repr v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking syn v1.0.48
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.94s
[INFO] running `Command { std: "docker" "inspect" "8bf7460b62ef0e095082fc2cda3dc45f86c1f35b7c2a92d61afa7296dbc0a96d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf7460b62ef0e095082fc2cda3dc45f86c1f35b7c2a92d61afa7296dbc0a96d", kill_on_drop: false }`
[INFO] [stdout] 8bf7460b62ef0e095082fc2cda3dc45f86c1f35b7c2a92d61afa7296dbc0a96d