[INFO] fetching crate task_scope 0.1.1...
[INFO] checking task_scope-0.1.1 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate task_scope 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate task_scope 0.1.1 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate task_scope 0.1.1
[INFO] finished tweaking crates.io crate task_scope 0.1.1
[INFO] tweaked toml for crates.io crate task_scope 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate task_scope 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-project-lite v0.1.2
[INFO] [stderr]   Downloaded futures-intrusive v0.2.2
[INFO] [stderr]   Downloaded async-task v1.2.0
[INFO] [stderr]   Downloaded tokio v0.2.8
[INFO] [stderr]   Downloaded async-std v1.4.0
[INFO] [stderr]   Downloaded pin-project v0.4.6
[INFO] [stderr]   Downloaded tokio-macros v0.2.3
[INFO] [stderr]   Downloaded pin-project-internal v0.4.6
[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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] 42812236be2e668a87c8c3320d574fed5824f8b9a6d4faa64189062eefd096d8
[INFO] running `Command { std: "docker" "start" "-a" "42812236be2e668a87c8c3320d574fed5824f8b9a6d4faa64189062eefd096d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42812236be2e668a87c8c3320d574fed5824f8b9a6d4faa64189062eefd096d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42812236be2e668a87c8c3320d574fed5824f8b9a6d4faa64189062eefd096d8", kill_on_drop: false }`
[INFO] [stdout] 42812236be2e668a87c8c3320d574fed5824f8b9a6d4faa64189062eefd096d8
[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" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] 4fa43e0256f2e2c15a124e02729e5ed58e3513824ef417c3f36147309f04a02f
[INFO] running `Command { std: "docker" "start" "-a" "4fa43e0256f2e2c15a124e02729e5ed58e3513824ef417c3f36147309f04a02f", kill_on_drop: false }`
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-intrusive v0.2.2
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking tokio v0.2.8
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking pin-project v0.4.6
[INFO] [stderr]     Checking task_scope v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.14s
[INFO] running `Command { std: "docker" "inspect" "4fa43e0256f2e2c15a124e02729e5ed58e3513824ef417c3f36147309f04a02f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa43e0256f2e2c15a124e02729e5ed58e3513824ef417c3f36147309f04a02f", kill_on_drop: false }`
[INFO] [stdout] 4fa43e0256f2e2c15a124e02729e5ed58e3513824ef417c3f36147309f04a02f