[INFO] fetching crate usbd-storage 2.0.0...
[INFO] checking usbd-storage-2.0.0 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate usbd-storage 2.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate usbd-storage 2.0.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate usbd-storage 2.0.0
[INFO] tweaked toml for crates.io crate usbd-storage 2.0.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate usbd-storage 2.0.0 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 usbd-storage 2.0.0 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] bc57753e0249336d58c8ff55f934a5d80788f42df66bc6314d593ddfcf68991a
[INFO] running `Command { std: "docker" "start" "-a" "bc57753e0249336d58c8ff55f934a5d80788f42df66bc6314d593ddfcf68991a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc57753e0249336d58c8ff55f934a5d80788f42df66bc6314d593ddfcf68991a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc57753e0249336d58c8ff55f934a5d80788f42df66bc6314d593ddfcf68991a", kill_on_drop: false }`
[INFO] [stdout] bc57753e0249336d58c8ff55f934a5d80788f42df66bc6314d593ddfcf68991a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 137e1b09de8d63f2f15283b86a1bd26e728f81c99a62ce493a698e6bf3db8934
[INFO] running `Command { std: "docker" "start" "-a" "137e1b09de8d63f2f15283b86a1bd26e728f81c99a62ce493a698e6bf3db8934", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling portable-atomic v1.9.0
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]     Checking usb-device v0.3.2
[INFO] [stderr]    Compiling num_enum_derive v0.6.1
[INFO] [stderr]     Checking num_enum v0.6.1
[INFO] [stderr]     Checking usbd-storage v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Command` is never constructed
[INFO] [stdout]   --> src/subclass/mod.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Command<'a, Kind, Class> {
[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] error: struct `Command` is never constructed
[INFO] [stdout]   --> src/subclass/mod.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Command<'a, Kind, Class> {
[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] [stderr] error: could not compile `usbd-storage` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `usbd-storage` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "137e1b09de8d63f2f15283b86a1bd26e728f81c99a62ce493a698e6bf3db8934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "137e1b09de8d63f2f15283b86a1bd26e728f81c99a62ce493a698e6bf3db8934", kill_on_drop: false }`
[INFO] [stdout] 137e1b09de8d63f2f15283b86a1bd26e728f81c99a62ce493a698e6bf3db8934
