[INFO] fetching crate rcu_cell 0.1.8...
[INFO] checking rcu_cell-0.1.8 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate rcu_cell 0.1.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rcu_cell 0.1.8 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rcu_cell 0.1.8
[INFO] finished tweaking crates.io crate rcu_cell 0.1.8
[INFO] tweaked toml for crates.io crate rcu_cell 0.1.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6156f3332e306579f1d866de18c5d1ea303906687a2bd8275b7a5e195da05cdb
[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" "6156f3332e306579f1d866de18c5d1ea303906687a2bd8275b7a5e195da05cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6156f3332e306579f1d866de18c5d1ea303906687a2bd8275b7a5e195da05cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6156f3332e306579f1d866de18c5d1ea303906687a2bd8275b7a5e195da05cdb", kill_on_drop: false }`
[INFO] [stdout] 6156f3332e306579f1d866de18c5d1ea303906687a2bd8275b7a5e195da05cdb
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "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] 6be07f5d3b18fcac8d6c7c800d797bfec4e120ff38e85e832c1526f596d51b6e
[INFO] running `Command { std: "docker" "start" "-a" "6be07f5d3b18fcac8d6c7c800d797bfec4e120ff38e85e832c1526f596d51b6e", kill_on_drop: false }`
[INFO] [stderr]     Checking rcu_cell v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "6be07f5d3b18fcac8d6c7c800d797bfec4e120ff38e85e832c1526f596d51b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6be07f5d3b18fcac8d6c7c800d797bfec4e120ff38e85e832c1526f596d51b6e", kill_on_drop: false }`
[INFO] [stdout] 6be07f5d3b18fcac8d6c7c800d797bfec4e120ff38e85e832c1526f596d51b6e