[INFO] fetching crate easy_store 0.3.1...
[INFO] checking easy_store-0.3.1 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate easy_store 0.3.1 into /workspace/builds/worker-3-tc2/source
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate easy_store 0.3.1
[INFO] finished tweaking crates.io crate easy_store 0.3.1
[INFO] tweaked toml for crates.io crate easy_store 0.3.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate easy_store 0.3.1 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate easy_store 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a76a95df440fabdfb19cfb84539fd9c70d83376052c43404f1c15f8f2fe0e3d4
[INFO] running `Command { std: "docker" "start" "-a" "a76a95df440fabdfb19cfb84539fd9c70d83376052c43404f1c15f8f2fe0e3d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a76a95df440fabdfb19cfb84539fd9c70d83376052c43404f1c15f8f2fe0e3d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a76a95df440fabdfb19cfb84539fd9c70d83376052c43404f1c15f8f2fe0e3d4", kill_on_drop: false }`
[INFO] [stdout] a76a95df440fabdfb19cfb84539fd9c70d83376052c43404f1c15f8f2fe0e3d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 694b6626c115b18b5be55284b415df20fb8ccd7f6d6252cc712b5391635167fa
[INFO] running `Command { std: "docker" "start" "-a" "694b6626c115b18b5be55284b415df20fb8ccd7f6d6252cc712b5391635167fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling easy_store v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking embedded-storage v0.3.1
[INFO] [stdout] error: struct `Store` is never constructed
[INFO] [stdout]   --> src/store.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Store {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CONCRETE_CLUSTER_SIZE` is never used
[INFO] [stdout]   --> src/store.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | const CONCRETE_CLUSTER_SIZE: usize = CLUSTER_SIZE - 8;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/store.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Store {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     flash_addr: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 25 |     flash_size: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 26 |     cluster: [u8; CLUSTER_SIZE],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 27 |     magic_name: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 28 |     cluster_max_quantity: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 29 |     continued_a: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 30 |     continued_b: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 31 |     write_cursor: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easy_store` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Store` is never constructed
[INFO] [stdout]   --> src/store.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Store {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CONCRETE_CLUSTER_SIZE` is never used
[INFO] [stdout]   --> src/store.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | const CONCRETE_CLUSTER_SIZE: usize = CLUSTER_SIZE - 8;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/store.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Store {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     flash_addr: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 25 |     flash_size: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 26 |     cluster: [u8; CLUSTER_SIZE],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 27 |     magic_name: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 28 |     cluster_max_quantity: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 29 |     continued_a: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 30 |     continued_b: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 31 |     write_cursor: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easy_store` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "694b6626c115b18b5be55284b415df20fb8ccd7f6d6252cc712b5391635167fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "694b6626c115b18b5be55284b415df20fb8ccd7f6d6252cc712b5391635167fa", kill_on_drop: false }`
[INFO] [stdout] 694b6626c115b18b5be55284b415df20fb8ccd7f6d6252cc712b5391635167fa
