[INFO] fetching crate boulder_derive 0.3.0...
[INFO] checking boulder_derive-0.3.0 against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] extracting crate boulder_derive 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate boulder_derive 0.3.0
[INFO] finished tweaking crates.io crate boulder_derive 0.3.0
[INFO] tweaked toml for crates.io crate boulder_derive 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate boulder_derive 0.3.0 on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6744232a94be86321ebae289bc9514461d9c39a6112ef64aa0399b624516cc4
[INFO] running `Command { std: "docker" "start" "-a" "b6744232a94be86321ebae289bc9514461d9c39a6112ef64aa0399b624516cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6744232a94be86321ebae289bc9514461d9c39a6112ef64aa0399b624516cc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6744232a94be86321ebae289bc9514461d9c39a6112ef64aa0399b624516cc4", kill_on_drop: false }`
[INFO] [stdout] b6744232a94be86321ebae289bc9514461d9c39a6112ef64aa0399b624516cc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe3686239f103ba3bbe8a1b5e83e5c32100abec45fd2662c1fcce7c69fe6d4e6
[INFO] running `Command { std: "docker" "start" "-a" "fe3686239f103ba3bbe8a1b5e83e5c32100abec45fd2662c1fcce7c69fe6d4e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking boulder_derive v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `buildable` is never read
[INFO] [stdout]   --> src/attributes.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Buildable {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 19 |         buildable: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `default` is never read
[INFO] [stdout]   --> src/attributes.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Default {
[INFO] [stdout]    |     ------- field in this variant
[INFO] [stdout] 23 |         default: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sequence` is never read
[INFO] [stdout]   --> src/attributes.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Sequence {
[INFO] [stdout]    |     -------- field in this variant
[INFO] [stdout] 27 |         sequence: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `generatable` is never read
[INFO] [stdout]   --> src/attributes.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Generatable {
[INFO] [stdout]    |     ----------- field in this variant
[INFO] [stdout] 31 |         generatable: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `generator` is never read
[INFO] [stdout]   --> src/attributes.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Generator {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 35 |         generator: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sequence_generator` is never read
[INFO] [stdout]   --> src/attributes.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     SequenceGenerator {
[INFO] [stdout]    |     ----------------- field in this variant
[INFO] [stdout] 39 |         sequence_generator: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `initializers` is never read
[INFO] [stdout]   --> src/attributes.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     BuildableWithPersianRug {
[INFO] [stdout]    |     ----------------------- field in this variant
[INFO] [stdout] 44 |         buildable_with_persian_rug: syn::Ident,
[INFO] [stdout] 45 |         initializers: BTreeMap<syn::Ident, syn::Expr>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     DefaultWithPersianRug {
[INFO] [stdout]    |     --------------------- fields in this variant
[INFO] [stdout] 48 |         default_with_persian_rug: syn::Ident,
[INFO] [stdout] 49 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 50 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     SequenceWithPersianRug {
[INFO] [stdout]    |     ---------------------- fields in this variant
[INFO] [stdout] 53 |         sequence_with_persian_rug: syn::Ident,
[INFO] [stdout] 54 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 55 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `initializers` is never read
[INFO] [stdout]   --> src/attributes.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     GeneratableWithPersianRug {
[INFO] [stdout]    |     ------------------------- field in this variant
[INFO] [stdout] 58 |         generatable_with_persian_rug: syn::Ident,
[INFO] [stdout] 59 |         initializers: BTreeMap<syn::Ident, syn::Expr>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     GeneratorWithPersianRug {
[INFO] [stdout]    |     ----------------------- fields in this variant
[INFO] [stdout] 62 |         generator_with_persian_rug: syn::Ident,
[INFO] [stdout] 63 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 64 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     SequenceGeneratorWithPersianRug {
[INFO] [stdout]    |     ------------------------------- fields in this variant
[INFO] [stdout] 67 |         sequence_generator_with_persian_rug: syn::Ident,
[INFO] [stdout] 68 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 69 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ty` is never read
[INFO] [stdout]    --> src/attributes.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |     Value {
[INFO] [stdout]     |     ----- field in this variant
[INFO] [stdout] 218 |         expr: Box<syn::Expr>,
[INFO] [stdout] 219 |         ty: Option<Box<syn::Type>>,
[INFO] [stdout]     |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `needs_context` is never read
[INFO] [stdout]    --> src/attributes.rs:227:9
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub struct BuilderData {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 227 |     pub needs_context: bool,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ty` is never read
[INFO] [stdout]    --> src/attributes.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     Generator {
[INFO] [stdout]     |     --------- field in this variant
[INFO] [stdout] 233 |         expr: Box<syn::Expr>,
[INFO] [stdout] 234 |         ty: Option<Box<syn::Type>>,
[INFO] [stdout]     |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `needs_context` and `sequence_needs_context` are never read
[INFO] [stdout]    --> src/attributes.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 240 | pub struct GeneratorData {
[INFO] [stdout]     |            ------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 243 |     pub needs_context: bool,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 244 |     pub sequence_needs_context: bool,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BuilderMetaWithPersianRug` is never constructed
[INFO] [stdout]    --> src/attributes.rs:341:12
[INFO] [stdout]     |
[INFO] [stdout] 341 | pub struct BuilderMetaWithPersianRug {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling persian-rug_derive v0.1.3
[INFO] [stderr]     Checking persian-rug v0.1.4
[INFO] [stdout] warning: field `buildable` is never read
[INFO] [stdout]   --> src/attributes.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Buildable {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 19 |         buildable: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `default` is never read
[INFO] [stdout]   --> src/attributes.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Default {
[INFO] [stdout]    |     ------- field in this variant
[INFO] [stdout] 23 |         default: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sequence` is never read
[INFO] [stdout]   --> src/attributes.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Sequence {
[INFO] [stdout]    |     -------- field in this variant
[INFO] [stdout] 27 |         sequence: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `generatable` is never read
[INFO] [stdout]   --> src/attributes.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Generatable {
[INFO] [stdout]    |     ----------- field in this variant
[INFO] [stdout] 31 |         generatable: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `generator` is never read
[INFO] [stdout]   --> src/attributes.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Generator {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 35 |         generator: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sequence_generator` is never read
[INFO] [stdout]   --> src/attributes.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     SequenceGenerator {
[INFO] [stdout]    |     ----------------- field in this variant
[INFO] [stdout] 39 |         sequence_generator: syn::Ident,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `initializers` is never read
[INFO] [stdout]   --> src/attributes.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     BuildableWithPersianRug {
[INFO] [stdout]    |     ----------------------- field in this variant
[INFO] [stdout] 44 |         buildable_with_persian_rug: syn::Ident,
[INFO] [stdout] 45 |         initializers: BTreeMap<syn::Ident, syn::Expr>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     DefaultWithPersianRug {
[INFO] [stdout]    |     --------------------- fields in this variant
[INFO] [stdout] 48 |         default_with_persian_rug: syn::Ident,
[INFO] [stdout] 49 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 50 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     SequenceWithPersianRug {
[INFO] [stdout]    |     ---------------------- fields in this variant
[INFO] [stdout] 53 |         sequence_with_persian_rug: syn::Ident,
[INFO] [stdout] 54 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 55 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `initializers` is never read
[INFO] [stdout]   --> src/attributes.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     GeneratableWithPersianRug {
[INFO] [stdout]    |     ------------------------- field in this variant
[INFO] [stdout] 58 |         generatable_with_persian_rug: syn::Ident,
[INFO] [stdout] 59 |         initializers: BTreeMap<syn::Ident, syn::Expr>,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     GeneratorWithPersianRug {
[INFO] [stdout]    |     ----------------------- fields in this variant
[INFO] [stdout] 62 |         generator_with_persian_rug: syn::Ident,
[INFO] [stdout] 63 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 64 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expr` and `ty` are never read
[INFO] [stdout]   --> src/attributes.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     SequenceGeneratorWithPersianRug {
[INFO] [stdout]    |     ------------------------------- fields in this variant
[INFO] [stdout] 67 |         sequence_generator_with_persian_rug: syn::Ident,
[INFO] [stdout] 68 |         expr: syn::Expr,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 69 |         ty: Option<syn::Type>,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ty` is never read
[INFO] [stdout]    --> src/attributes.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |     Value {
[INFO] [stdout]     |     ----- field in this variant
[INFO] [stdout] 218 |         expr: Box<syn::Expr>,
[INFO] [stdout] 219 |         ty: Option<Box<syn::Type>>,
[INFO] [stdout]     |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `needs_context` is never read
[INFO] [stdout]    --> src/attributes.rs:227:9
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub struct BuilderData {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 227 |     pub needs_context: bool,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ty` is never read
[INFO] [stdout]    --> src/attributes.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |     Generator {
[INFO] [stdout]     |     --------- field in this variant
[INFO] [stdout] 233 |         expr: Box<syn::Expr>,
[INFO] [stdout] 234 |         ty: Option<Box<syn::Type>>,
[INFO] [stdout]     |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `needs_context` and `sequence_needs_context` are never read
[INFO] [stdout]    --> src/attributes.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 240 | pub struct GeneratorData {
[INFO] [stdout]     |            ------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 243 |     pub needs_context: bool,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 244 |     pub sequence_needs_context: bool,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BuilderMetaWithPersianRug` is never constructed
[INFO] [stdout]    --> src/attributes.rs:341:12
[INFO] [stdout]     |
[INFO] [stdout] 341 | pub struct BuilderMetaWithPersianRug {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.30s
[INFO] running `Command { std: "docker" "inspect" "fe3686239f103ba3bbe8a1b5e83e5c32100abec45fd2662c1fcce7c69fe6d4e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe3686239f103ba3bbe8a1b5e83e5c32100abec45fd2662c1fcce7c69fe6d4e6", kill_on_drop: false }`
[INFO] [stdout] fe3686239f103ba3bbe8a1b5e83e5c32100abec45fd2662c1fcce7c69fe6d4e6
