[INFO] fetching crate commandspec 0.12.2...
[INFO] testing commandspec-0.12.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate commandspec 0.12.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate commandspec 0.12.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate commandspec 0.12.2
[INFO] finished tweaking crates.io crate commandspec 0.12.2
[INFO] tweaked toml for crates.io crate commandspec 0.12.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a60700424ff865246520b0b7aa111c34ea88a89b619bd3b4c1f29dcb1a8d652
[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" "6a60700424ff865246520b0b7aa111c34ea88a89b619bd3b4c1f29dcb1a8d652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a60700424ff865246520b0b7aa111c34ea88a89b619bd3b4c1f29dcb1a8d652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a60700424ff865246520b0b7aa111c34ea88a89b619bd3b4c1f29dcb1a8d652", kill_on_drop: false }`
[INFO] [stdout] 6a60700424ff865246520b0b7aa111c34ea88a89b619bd3b4c1f29dcb1a8d652
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35ba80a35512242b59a1b66691b8f586a1ce61e70b70709f0edccc09b4316ed0
[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" "35ba80a35512242b59a1b66691b8f586a1ce61e70b70709f0edccc09b4316ed0", kill_on_drop: false }`
[INFO] [stderr] Compiling syn v1.0.57
[INFO] [stderr] Compiling nix v0.11.1
[INFO] [stderr] Compiling synstructure v0.12.4
[INFO] [stderr] Compiling failure_derive v0.1.8
[INFO] [stderr] Compiling failure v0.1.8
[INFO] [stderr] Compiling commandspec v0.12.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] --> src/signal.rs:8:42
[INFO] [stdout] |
[INFO] [stdout] 8 | static ref CLEANUP: Mutex