[INFO] cloning repository https://github.com/ryo33/derive-visitor-enum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryo33/derive-visitor-enum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryo33%2Fderive-visitor-enum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryo33%2Fderive-visitor-enum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f3554d185e3d63a81a529fdd39f2302dbb9d1f5c
[INFO] checking ryo33/derive-visitor-enum against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryo33%2Fderive-visitor-enum" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ryo33/derive-visitor-enum
[INFO] finished tweaking git repo https://github.com/ryo33/derive-visitor-enum
[INFO] tweaked toml for git repo https://github.com/ryo33/derive-visitor-enum written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ryo33/derive-visitor-enum on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ryo33/derive-visitor-enum 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded pretty_assertions v1.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f3343259aecf58c78cfcc0c4985c40b64dde438d59f561647be03f7ae54efc6
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[INFO] running `Command { std: "docker" "inspect" "4f3343259aecf58c78cfcc0c4985c40b64dde438d59f561647be03f7ae54efc6", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce9974d777ad61d8c10408ff4242562bdb936a7a9bee3daad2082829db065522
[INFO] running `Command { std: "docker" "start" "-a" "ce9974d777ad61d8c10408ff4242562bdb936a7a9bee3daad2082829db065522", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking proc-macro2 v1.0.49
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking quote v1.0.23
[INFO] [stderr]     Checking derive-visitor-enum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/data_structure.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub(crate) fn extract(input: syn::DeriveInput) -> DataStructure {
[INFO] [stdout]    |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `structure`
[INFO] [stdout]  --> src/visitor.rs:3:32
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) fn generate_visitor(structure: DataStructure) -> proc_macro2::TokenStream {
[INFO] [stdout]   |                                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_structure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `structure`
[INFO] [stdout]  --> src/visitor_unit.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) fn generate_visitor_unit(structure: DataStructure) -> proc_macro2::TokenStream {
[INFO] [stdout]   |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_structure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `variants` are never read
[INFO] [stdout]  --> src/data_structure.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) struct DataStructure {
[INFO] [stdout]   |                   ------------- fields in this struct
[INFO] [stdout] 2 |     pub(crate) name: syn::Ident,
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 3 |     pub(crate) variants: Vec<Variant>,
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `return_type`, and `fields` are never read
[INFO] [stdout]  --> src/data_structure.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) struct Variant {
[INFO] [stdout]   |                   ------- fields in this struct
[INFO] [stdout] 7 |     pub(crate) name: syn::Ident,
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 8 |     pub(crate) return_type: syn::Ident,
[INFO] [stdout]   |                ^^^^^^^^^^^
[INFO] [stdout] 9 |     pub(crate) fields: Fields,
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Struct` and `Tuple` are never constructed
[INFO] [stdout]   --> src/data_structure.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) enum Fields {
[INFO] [stdout]    |                 ------ variants in this enum
[INFO] [stdout] 13 |     Struct(Vec<NamedField>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 14 |     Tuple(Vec<Field>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `ty`, and `visitor` are never read
[INFO] [stdout]   --> src/data_structure.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub(crate) struct Field {
[INFO] [stdout]    |                   ----- fields in this struct
[INFO] [stdout] 18 |     pub(crate) name: syn::Ident,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 19 |     pub(crate) ty: Type,
[INFO] [stdout]    |                ^^
[INFO] [stdout] 20 |     pub(crate) visitor: FieldVisitor,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `This`, `Vec`, `Option`, and `Other` are never constructed
[INFO] [stdout]   --> src/data_structure.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub(crate) enum Type {
[INFO] [stdout]    |                 ---- variants in this enum
[INFO] [stdout] 24 |     /// `Self`, `Box<Self>`, `Rc<Self>`, or `Arc<Self>`
[INFO] [stdout] 25 |     This,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 26 |     Vec(Box<Type>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 27 |     Option(Box<Type>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 28 |     Other(syn::Type),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]   --> src/data_structure.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) enum FieldVisitor {
[INFO] [stdout]    |                 ------------ variant in this enum
[INFO] [stdout] 32 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `field` are never read
[INFO] [stdout]   --> src/data_structure.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub(crate) struct NamedField {
[INFO] [stdout]    |                   ---------- fields in this struct
[INFO] [stdout] 36 |     pub(crate) name: syn::Ident,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 37 |     pub(crate) field: Field,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/data_structure.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub(crate) fn extract(input: syn::DeriveInput) -> DataStructure {
[INFO] [stdout]    |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `structure`
[INFO] [stdout]  --> src/visitor.rs:3:32
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) fn generate_visitor(structure: DataStructure) -> proc_macro2::TokenStream {
[INFO] [stdout]   |                                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_structure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `structure`
[INFO] [stdout]  --> src/visitor_unit.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub(crate) fn generate_visitor_unit(structure: DataStructure) -> proc_macro2::TokenStream {
[INFO] [stdout]   |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_structure`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `variants` are never read
[INFO] [stdout]  --> src/data_structure.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) struct DataStructure {
[INFO] [stdout]   |                   ------------- fields in this struct
[INFO] [stdout] 2 |     pub(crate) name: syn::Ident,
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 3 |     pub(crate) variants: Vec<Variant>,
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `return_type`, and `fields` are never read
[INFO] [stdout]  --> src/data_structure.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) struct Variant {
[INFO] [stdout]   |                   ------- fields in this struct
[INFO] [stdout] 7 |     pub(crate) name: syn::Ident,
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 8 |     pub(crate) return_type: syn::Ident,
[INFO] [stdout]   |                ^^^^^^^^^^^
[INFO] [stdout] 9 |     pub(crate) fields: Fields,
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Struct` and `Tuple` are never constructed
[INFO] [stdout]   --> src/data_structure.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) enum Fields {
[INFO] [stdout]    |                 ------ variants in this enum
[INFO] [stdout] 13 |     Struct(Vec<NamedField>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 14 |     Tuple(Vec<Field>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `ty`, and `visitor` are never read
[INFO] [stdout]   --> src/data_structure.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub(crate) struct Field {
[INFO] [stdout]    |                   ----- fields in this struct
[INFO] [stdout] 18 |     pub(crate) name: syn::Ident,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 19 |     pub(crate) ty: Type,
[INFO] [stdout]    |                ^^
[INFO] [stdout] 20 |     pub(crate) visitor: FieldVisitor,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `This`, `Vec`, `Option`, and `Other` are never constructed
[INFO] [stdout]   --> src/data_structure.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub(crate) enum Type {
[INFO] [stdout]    |                 ---- variants in this enum
[INFO] [stdout] 24 |     /// `Self`, `Box<Self>`, `Rc<Self>`, or `Arc<Self>`
[INFO] [stdout] 25 |     This,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 26 |     Vec(Box<Type>),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 27 |     Option(Box<Type>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 28 |     Other(syn::Type),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]   --> src/data_structure.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) enum FieldVisitor {
[INFO] [stdout]    |                 ------------ variant in this enum
[INFO] [stdout] 32 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `field` are never read
[INFO] [stdout]   --> src/data_structure.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub(crate) struct NamedField {
[INFO] [stdout]    |                   ---------- fields in this struct
[INFO] [stdout] 36 |     pub(crate) name: syn::Ident,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 37 |     pub(crate) field: Field,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `Command { std: "docker" "inspect" "ce9974d777ad61d8c10408ff4242562bdb936a7a9bee3daad2082829db065522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce9974d777ad61d8c10408ff4242562bdb936a7a9bee3daad2082829db065522", kill_on_drop: false }`
[INFO] [stdout] ce9974d777ad61d8c10408ff4242562bdb936a7a9bee3daad2082829db065522
