[INFO] fetching crate prost-dto 0.0.4...
[INFO] checking prost-dto-0.0.4 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate prost-dto 0.0.4 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate prost-dto 0.0.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate prost-dto 0.0.4
[INFO] tweaked toml for crates.io crate prost-dto 0.0.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prost-dto 0.0.4 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 prost-dto 0.0.4 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ed1eeb7e8edeeefe2a9ada21b592cbeb68eddf165623d91157d105bb8e241abe
[INFO] running `Command { std: "docker" "start" "-a" "ed1eeb7e8edeeefe2a9ada21b592cbeb68eddf165623d91157d105bb8e241abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed1eeb7e8edeeefe2a9ada21b592cbeb68eddf165623d91157d105bb8e241abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed1eeb7e8edeeefe2a9ada21b592cbeb68eddf165623d91157d105bb8e241abe", kill_on_drop: false }`
[INFO] [stdout] ed1eeb7e8edeeefe2a9ada21b592cbeb68eddf165623d91157d105bb8e241abe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b69f024946cc7a2faee0f1a86771e5f2a47a515fe1b29a67f316de841fd07551
[INFO] running `Command { std: "docker" "start" "-a" "b69f024946cc7a2faee0f1a86771e5f2a47a515fe1b29a67f316de841fd07551", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]     Checking unicode-ident v1.0.20
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]    Compiling target-triple v0.1.4
[INFO] [stderr]     Checking winnow v0.7.13
[INFO] [stderr]     Checking toml_writer v1.0.4
[INFO] [stderr]     Checking dissimilar v1.0.10
[INFO] [stderr]     Checking serde_spanned v1.0.3
[INFO] [stderr]     Checking toml_datetime v0.7.3
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking syn v2.0.108
[INFO] [stderr]     Checking toml_parser v1.0.4
[INFO] [stderr]     Checking toml v0.9.8
[INFO] [stderr]     Checking darling_core v0.21.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]    Compiling prost-dto-core v0.0.4
[INFO] [stderr]    Compiling prost-dto-derive v0.0.4
[INFO] [stderr]     Checking trybuild v1.0.112
[INFO] [stderr]     Checking prost-dto v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Recurring` is never constructed
[INFO] [stdout]   --> tests/simple-into-prost-struct.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Recurring {
[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: `Recurring` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[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 `prost-dto` (test "simple-into-prost-struct") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b69f024946cc7a2faee0f1a86771e5f2a47a515fe1b29a67f316de841fd07551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b69f024946cc7a2faee0f1a86771e5f2a47a515fe1b29a67f316de841fd07551", kill_on_drop: false }`
[INFO] [stdout] b69f024946cc7a2faee0f1a86771e5f2a47a515fe1b29a67f316de841fd07551
