[INFO] fetching crate signald-rust 0.1.5...
[INFO] checking signald-rust-0.1.5 against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] extracting crate signald-rust 0.1.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate signald-rust 0.1.5 on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate signald-rust 0.1.5
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate signald-rust 0.1.5
[INFO] tweaked toml for crates.io crate signald-rust 0.1.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate signald-rust 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hermit-abi v0.1.8
[INFO] [stderr]   Downloaded num_cpus v1.12.0
[INFO] [stderr]   Downloaded atomic-option v0.1.2
[INFO] [stderr]   Downloaded futures v0.3.4
[INFO] [stderr]   Downloaded serde_json v1.0.48
[INFO] [stderr]   Downloaded smallvec v1.2.0
[INFO] [stderr]   Downloaded syn v1.0.16
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.2
[INFO] [stderr]   Downloaded libc v0.2.67
[INFO] [stderr]   Downloaded tokio v0.2.13
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.12
[INFO] [stderr]   Downloaded bus v2.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "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] ef2e47c7737a7f1e506581fbd7b30f542108e255cc6a227ece2f99f2c36a9a95
[INFO] running `Command { std: "docker" "start" "-a" "ef2e47c7737a7f1e506581fbd7b30f542108e255cc6a227ece2f99f2c36a9a95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef2e47c7737a7f1e506581fbd7b30f542108e255cc6a227ece2f99f2c36a9a95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef2e47c7737a7f1e506581fbd7b30f542108e255cc6a227ece2f99f2c36a9a95", kill_on_drop: false }`
[INFO] [stdout] ef2e47c7737a7f1e506581fbd7b30f542108e255cc6a227ece2f99f2c36a9a95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e353301ad8255c36949bbf4b1db4e5c0ddda72f3bf17b8241af08043b7b022b5
[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" "e353301ad8255c36949bbf4b1db4e5c0ddda72f3bf17b8241af08043b7b022b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking atomic-option v0.1.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking bus v2.2.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.12
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking signald-rust v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.77s
[INFO] running `Command { std: "docker" "inspect" "e353301ad8255c36949bbf4b1db4e5c0ddda72f3bf17b8241af08043b7b022b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e353301ad8255c36949bbf4b1db4e5c0ddda72f3bf17b8241af08043b7b022b5", kill_on_drop: false }`
[INFO] [stdout] e353301ad8255c36949bbf4b1db4e5c0ddda72f3bf17b8241af08043b7b022b5