[INFO] fetching crate aktoro 0.1.0-alpha.4...
[INFO] checking aktoro-0.1.0-alpha.4 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate aktoro 0.1.0-alpha.4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate aktoro 0.1.0-alpha.4 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate aktoro 0.1.0-alpha.4
[INFO] finished tweaking crates.io crate aktoro 0.1.0-alpha.4
[INFO] tweaked toml for crates.io crate aktoro 0.1.0-alpha.4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aktoro-context v0.1.0-alpha.4
[INFO] [stderr]   Downloaded aktoro-runtime v0.1.0-alpha.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] e15edcb6dabb24a396afb545e6fbd0dfa24971051671ff19dd495289a0bde947
[INFO] running `Command { std: "docker" "start" "-a" "e15edcb6dabb24a396afb545e6fbd0dfa24971051671ff19dd495289a0bde947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e15edcb6dabb24a396afb545e6fbd0dfa24971051671ff19dd495289a0bde947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e15edcb6dabb24a396afb545e6fbd0dfa24971051671ff19dd495289a0bde947", kill_on_drop: false }`
[INFO] [stdout] e15edcb6dabb24a396afb545e6fbd0dfa24971051671ff19dd495289a0bde947
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] 35b606c75971431a94ffc2b71d72ae68c580cef6ffb1be59b426dff13f5ad18d
[INFO] running `Command { std: "docker" "start" "-a" "35b606c75971431a94ffc2b71d72ae68c580cef6ffb1be59b426dff13f5ad18d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking aktoro-raw v0.1.0-alpha.4
[INFO] [stderr]     Checking aktoro-channel v0.1.0-alpha.8
[INFO] [stderr]     Checking rand_xoshiro v0.2.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking aktoro-context v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking runtime-raw v0.3.0-alpha.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling runtime-attributes v0.3.0-alpha.6
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking runtime v0.3.0-alpha.8
[INFO] [stderr]     Checking aktoro-runtime v0.1.0-alpha.4
[INFO] [stderr]     Checking aktoro v0.1.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.10s
[INFO] running `Command { std: "docker" "inspect" "35b606c75971431a94ffc2b71d72ae68c580cef6ffb1be59b426dff13f5ad18d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35b606c75971431a94ffc2b71d72ae68c580cef6ffb1be59b426dff13f5ad18d", kill_on_drop: false }`
[INFO] [stdout] 35b606c75971431a94ffc2b71d72ae68c580cef6ffb1be59b426dff13f5ad18d