[INFO] fetching crate scylla 0.3.1...
[INFO] checking scylla-0.3.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate scylla 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate scylla 0.3.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scylla 0.3.1
[INFO] finished tweaking crates.io crate scylla 0.3.1
[INFO] tweaked toml for crates.io crate scylla 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--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 tokio-openssl v0.6.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] 5ba0b046ec438b73ffa6c08deb56f52c819f396871afed036f46c7867e1d64a7
[INFO] running `Command { std: "docker" "start" "-a" "5ba0b046ec438b73ffa6c08deb56f52c819f396871afed036f46c7867e1d64a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ba0b046ec438b73ffa6c08deb56f52c819f396871afed036f46c7867e1d64a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ba0b046ec438b73ffa6c08deb56f52c819f396871afed036f46c7867e1d64a7", kill_on_drop: false }`
[INFO] [stdout] 5ba0b046ec438b73ffa6c08deb56f52c819f396871afed036f46c7867e1d64a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12ec831b1ab05995385b0cf2d855621ca3aa0fb377eff6198ebe599a5425510f
[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" "12ec831b1ab05995385b0cf2d855621ca3aa0fb377eff6198ebe599a5425510f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]     Checking futures-sink v0.3.18
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking futures-io v0.3.18
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[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.9
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[INFO] [stderr]    Compiling serde_derive v1.0.130
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[INFO] [stderr]     Checking rand_core v0.5.1
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[INFO] [stderr]    Compiling thiserror-impl v1.0.30
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[INFO] [stderr]    Compiling tokio-macros v1.6.0
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[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling scylla-macros v0.1.1
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling num_enum_derive v0.5.4
[INFO] [stderr]     Checking futures-executor v0.3.18
[INFO] [stderr]     Checking futures v0.3.18
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[INFO] [stderr]     Checking scylla v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `result_metadata`
[INFO] [stdout]   --> src/frame/response/result.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     result_metadata: ResultMetadata,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `table_name`
[INFO] [stdout]   --> src/frame/response/result.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     table_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rows_count`
[INFO] [stdout]    --> src/frame/response/result.rs:332:5
[INFO] [stdout]     |
[INFO] [stdout] 332 |     rows_count: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keyspace_name`
[INFO] [stdout]   --> src/transport/node.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     keyspace_name: VerifiedKeyspaceName,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `response_chan`
[INFO] [stdout]   --> src/transport/node.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     response_chan: tokio::sync::oneshot::Sender<Result<(), QueryError>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> benches/benchmark.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |             types::write_string("hello, world", &mut buf);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `result_metadata`
[INFO] [stdout]   --> src/frame/response/result.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     result_metadata: ResultMetadata,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `table_name`
[INFO] [stdout]   --> src/frame/response/result.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     table_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rows_count`
[INFO] [stdout]    --> src/frame/response/result.rs:332:5
[INFO] [stdout]     |
[INFO] [stdout] 332 |     rows_count: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keyspace_name`
[INFO] [stdout]   --> src/transport/node.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     keyspace_name: VerifiedKeyspaceName,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `response_chan`
[INFO] [stdout]   --> src/transport/node.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     response_chan: tokio::sync::oneshot::Sender<Result<(), QueryError>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 06s
[INFO] running `Command { std: "docker" "inspect" "12ec831b1ab05995385b0cf2d855621ca3aa0fb377eff6198ebe599a5425510f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12ec831b1ab05995385b0cf2d855621ca3aa0fb377eff6198ebe599a5425510f", kill_on_drop: false }`
[INFO] [stdout] 12ec831b1ab05995385b0cf2d855621ca3aa0fb377eff6198ebe599a5425510f