[INFO] fetching crate yaar-reactor 0.1.2-alpha.1...
[INFO] checking yaar-reactor-0.1.2-alpha.1 against beta for pr-78714
[INFO] extracting crate yaar-reactor 0.1.2-alpha.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate yaar-reactor 0.1.2-alpha.1 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 yaar-reactor 0.1.2-alpha.1
[INFO] finished tweaking crates.io crate yaar-reactor 0.1.2-alpha.1
[INFO] tweaked toml for crates.io crate yaar-reactor 0.1.2-alpha.1 written to /workspace/builds/worker-1/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta" "metadata" "--no-deps" "--format-version=1", 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] bc6364cb83977cec807f36afcb0aea079b6cb6ce1b2160d260bb092135bb4e0f
[INFO] running `Command { std: "docker" "start" "-a" "bc6364cb83977cec807f36afcb0aea079b6cb6ce1b2160d260bb092135bb4e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc6364cb83977cec807f36afcb0aea079b6cb6ce1b2160d260bb092135bb4e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc6364cb83977cec807f36afcb0aea079b6cb6ce1b2160d260bb092135bb4e0f", kill_on_drop: false }`
[INFO] [stdout] bc6364cb83977cec807f36afcb0aea079b6cb6ce1b2160d260bb092135bb4e0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d1ba2e80763df6e3ddff9887cf201cd154c60f2347a0afef12e1b983c4e56e4
[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" "8d1ba2e80763df6e3ddff9887cf201cd154c60f2347a0afef12e1b983c4e56e4", kill_on_drop: false }`
[INFO] [stderr]     Checking yaar-reactor v0.1.2-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "8d1ba2e80763df6e3ddff9887cf201cd154c60f2347a0afef12e1b983c4e56e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d1ba2e80763df6e3ddff9887cf201cd154c60f2347a0afef12e1b983c4e56e4", kill_on_drop: false }`
[INFO] [stdout] 8d1ba2e80763df6e3ddff9887cf201cd154c60f2347a0afef12e1b983c4e56e4