[INFO] fetching crate polodb_core 0.2.0...
[INFO] checking polodb_core-0.2.0 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate polodb_core 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate polodb_core 0.2.0 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 polodb_core 0.2.0
[INFO] finished tweaking crates.io crate polodb_core 0.2.0
[INFO] tweaked toml for crates.io crate polodb_core 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f701a06e1b92eb6360e9a5e952fad8dc5147c2a6441c5652b0c057e54652fe30
[INFO] running `Command { std: "docker" "start" "-a" "f701a06e1b92eb6360e9a5e952fad8dc5147c2a6441c5652b0c057e54652fe30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f701a06e1b92eb6360e9a5e952fad8dc5147c2a6441c5652b0c057e54652fe30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f701a06e1b92eb6360e9a5e952fad8dc5147c2a6441c5652b0c057e54652fe30", kill_on_drop: false }`
[INFO] [stdout] f701a06e1b92eb6360e9a5e952fad8dc5147c2a6441c5652b0c057e54652fe30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 3b7eb9fa3200a25c10b0c933c08eb0f60297231b216999b6bf56780f6e538c9f
[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" "3b7eb9fa3200a25c10b0c933c08eb0f60297231b216999b6bf56780f6e538c9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking polodb_bson v0.2.0
[INFO] [stderr]     Checking polodb_core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `create_index`
[INFO] [stdout]   --> db.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn create_index(&mut self, keys: &Document, options: Option<&Document>) -> DbResult<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> meta_doc_helper.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new(id: String, root_pid: u32) -> MetaDocEntry {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.07s
[INFO] running `Command { std: "docker" "inspect" "3b7eb9fa3200a25c10b0c933c08eb0f60297231b216999b6bf56780f6e538c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b7eb9fa3200a25c10b0c933c08eb0f60297231b216999b6bf56780f6e538c9f", kill_on_drop: false }`
[INFO] [stdout] 3b7eb9fa3200a25c10b0c933c08eb0f60297231b216999b6bf56780f6e538c9f