[INFO] fetching crate arangors 0.4.4...
[INFO] checking arangors-0.4.4 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate arangors 0.4.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arangors 0.4.4 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arangors 0.4.4
[INFO] finished tweaking crates.io crate arangors 0.4.4
[INFO] tweaked toml for crates.io crate arangors 0.4.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate arangors 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a89fef51d8aace9c929fe70308009faa812eb4f28c10f7c642a7ac2f0c4f9ed
[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" "1a89fef51d8aace9c929fe70308009faa812eb4f28c10f7c642a7ac2f0c4f9ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a89fef51d8aace9c929fe70308009faa812eb4f28c10f7c642a7ac2f0c4f9ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a89fef51d8aace9c929fe70308009faa812eb4f28c10f7c642a7ac2f0c4f9ed", kill_on_drop: false }`
[INFO] [stdout] 1a89fef51d8aace9c929fe70308009faa812eb4f28c10f7c642a7ac2f0c4f9ed
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] 80c31a1f8d2fe14d3ee1a24c8115f0a79f47e99eded7c1a91ab0248c295814b8
[INFO] running `Command { std: "docker" "start" "-a" "80c31a1f8d2fe14d3ee1a24c8115f0a79f47e99eded7c1a91ab0248c295814b8", kill_on_drop: false }`
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[INFO] [stderr]    Compiling unicase v2.6.0
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[INFO] [stderr]     Checking pin-project v0.4.27
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[INFO] [stderr]     Checking hyper-tls v0.4.3
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[INFO] [stderr]     Checking arangors v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/document.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut database = conn.db("test_db").await?;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 44s
[INFO] running `Command { std: "docker" "inspect" "80c31a1f8d2fe14d3ee1a24c8115f0a79f47e99eded7c1a91ab0248c295814b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80c31a1f8d2fe14d3ee1a24c8115f0a79f47e99eded7c1a91ab0248c295814b8", kill_on_drop: false }`
[INFO] [stdout] 80c31a1f8d2fe14d3ee1a24c8115f0a79f47e99eded7c1a91ab0248c295814b8