[INFO] fetching crate cotton 0.0.13...
[INFO] checking cotton-0.0.13 against beta for pr-78714
[INFO] extracting crate cotton 0.0.13 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cotton 0.0.13 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cotton 0.0.13
[INFO] finished tweaking crates.io crate cotton 0.0.13
[INFO] tweaked toml for crates.io crate cotton 0.0.13 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fc51fe5c56488bb0621f391b155ccade8144a36b765fb3d0f7e2b93f5186926
[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" "8fc51fe5c56488bb0621f391b155ccade8144a36b765fb3d0f7e2b93f5186926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fc51fe5c56488bb0621f391b155ccade8144a36b765fb3d0f7e2b93f5186926", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc51fe5c56488bb0621f391b155ccade8144a36b765fb3d0f7e2b93f5186926", kill_on_drop: false }`
[INFO] [stdout] 8fc51fe5c56488bb0621f391b155ccade8144a36b765fb3d0f7e2b93f5186926
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61acae2a0aadf307dac5f7c6ca09eeff9a86363edf74737fc8bbc26b49e3e396
[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" "61acae2a0aadf307dac5f7c6ca09eeff9a86363edf74737fc8bbc26b49e3e396", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]     Checking tap v1.0.0
[INFO] [stderr]     Checking assert_matches v1.4.0
[INFO] [stderr]     Checking linked_hash_set v0.1.4
[INFO] [stderr]     Checking os_pipe v0.9.2
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking shaman v0.1.0
[INFO] [stderr]     Checking problem v5.3.0
[INFO] [stderr]     Checking duct v0.13.4
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking cotton v0.0.13 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.69s
[INFO] running `Command { std: "docker" "inspect" "61acae2a0aadf307dac5f7c6ca09eeff9a86363edf74737fc8bbc26b49e3e396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61acae2a0aadf307dac5f7c6ca09eeff9a86363edf74737fc8bbc26b49e3e396", kill_on_drop: false }`
[INFO] [stdout] 61acae2a0aadf307dac5f7c6ca09eeff9a86363edf74737fc8bbc26b49e3e396