[INFO] fetching crate val-test 0.2.3...
[INFO] checking val-test-0.2.3 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate val-test 0.2.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate val-test 0.2.3
[INFO] finished tweaking crates.io crate val-test 0.2.3
[INFO] tweaked toml for crates.io crate val-test 0.2.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate val-test 0.2.3 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 val-test 0.2.3 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] c2dd269d098032b92e0362ec22e603567364abff79f1570bf3f79e888b113d6a
[INFO] running `Command { std: "docker" "start" "-a" "c2dd269d098032b92e0362ec22e603567364abff79f1570bf3f79e888b113d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2dd269d098032b92e0362ec22e603567364abff79f1570bf3f79e888b113d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2dd269d098032b92e0362ec22e603567364abff79f1570bf3f79e888b113d6a", kill_on_drop: false }`
[INFO] [stdout] c2dd269d098032b92e0362ec22e603567364abff79f1570bf3f79e888b113d6a
[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] 3df094ed4c6b71e6ad25f634e5d4b0d6c268bac7b5110d7e6519331398d7c6e4
[INFO] running `Command { std: "docker" "start" "-a" "3df094ed4c6b71e6ad25f634e5d4b0d6c268bac7b5110d7e6519331398d7c6e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking val-test v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `ValidationResult` is never constructed
[INFO] [stdout]   --> src/lib.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub struct ValidationResult {
[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: fields `message`, `field`, and `valid` are never read
[INFO] [stdout]   --> src/lib.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub struct ValidationResult {
[INFO] [stdout]    |                ---------------- fields in this struct
[INFO] [stdout] 74 |         pub(crate) message: Option<String>,
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout] 75 |         pub(crate) field: Option<String>,
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 76 |         pub(crate) valid: bool,
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ValidationResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `val-test` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `ValidationResult` is never constructed
[INFO] [stdout]   --> src/lib.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub struct ValidationResult {
[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: fields `message`, `field`, and `valid` are never read
[INFO] [stdout]   --> src/lib.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub struct ValidationResult {
[INFO] [stdout]    |                ---------------- fields in this struct
[INFO] [stdout] 74 |         pub(crate) message: Option<String>,
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout] 75 |         pub(crate) field: Option<String>,
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] 76 |         pub(crate) valid: bool,
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ValidationResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `val-test` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "3df094ed4c6b71e6ad25f634e5d4b0d6c268bac7b5110d7e6519331398d7c6e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3df094ed4c6b71e6ad25f634e5d4b0d6c268bac7b5110d7e6519331398d7c6e4", kill_on_drop: false }`
[INFO] [stdout] 3df094ed4c6b71e6ad25f634e5d4b0d6c268bac7b5110d7e6519331398d7c6e4
