[INFO] fetching crate proto-vulcan-macros 0.1.6...
[INFO] building proto-vulcan-macros-0.1.6 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate proto-vulcan-macros 0.1.6 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate proto-vulcan-macros 0.1.6
[INFO] finished tweaking crates.io crate proto-vulcan-macros 0.1.6
[INFO] tweaked toml for crates.io crate proto-vulcan-macros 0.1.6 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate proto-vulcan-macros 0.1.6 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ee9e9ba23c797e64cc12652e023a707c02b920cde381dbcb5e5a24e3318b279
[INFO] running `Command { std: "docker" "start" "-a" "7ee9e9ba23c797e64cc12652e023a707c02b920cde381dbcb5e5a24e3318b279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ee9e9ba23c797e64cc12652e023a707c02b920cde381dbcb5e5a24e3318b279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ee9e9ba23c797e64cc12652e023a707c02b920cde381dbcb5e5a24e3318b279", kill_on_drop: false }`
[INFO] [stdout] 7ee9e9ba23c797e64cc12652e023a707c02b920cde381dbcb5e5a24e3318b279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e27191e3db8604d25c6374f7fb94379769a9b5e4e27ff4a89691a424e483824c
[INFO] running `Command { std: "docker" "start" "-a" "e27191e3db8604d25c6374f7fb94379769a9b5e4e27ff4a89691a424e483824c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proto-vulcan-macros v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:369:5
[INFO] [stdout]     |
[INFO] [stdout] 367 | struct UnnamedCompoundConstructor {
[INFO] [stdout]     |        -------------------------- field in this struct
[INFO] [stdout] 368 |     compound_path: CompoundPath,
[INFO] [stdout] 369 |     paren_token: Option<Paren>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UnnamedCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]    --> src/lib.rs:391:5
[INFO] [stdout]     |
[INFO] [stdout] 389 | struct NamedCompoundConstructor {
[INFO] [stdout]     |        ------------------------ field in this struct
[INFO] [stdout] 390 |     compound_path: CompoundPath,
[INFO] [stdout] 391 |     brace_token: Option<Brace>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:412:5
[INFO] [stdout]     |
[INFO] [stdout] 411 | struct TupleCompoundConstructor {
[INFO] [stdout]     |        ------------------------ field in this struct
[INFO] [stdout] 412 |     paren_token: Paren,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TupleCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `num_snake_case` are never read
[INFO] [stdout]    --> src/lib.rs:850:5
[INFO] [stdout]     |
[INFO] [stdout] 848 | struct CompoundPath {
[INFO] [stdout]     |        ------------ fields in this struct
[INFO] [stdout] 849 |     leading_colon: Option<Token![::]>,
[INFO] [stdout] 850 |     path: Punctuated<Ident, Token![::]>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 851 |     num_snake_case: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CompoundPath` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:947:5
[INFO] [stdout]     |
[INFO] [stdout] 945 | struct UnnamedCompoundPattern {
[INFO] [stdout]     |        ---------------------- field in this struct
[INFO] [stdout] 946 |     compound_path: CompoundPath,
[INFO] [stdout] 947 |     paren_token: Option<Paren>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UnnamedCompoundPattern` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]    --> src/lib.rs:979:5
[INFO] [stdout]     |
[INFO] [stdout] 977 | struct NamedCompoundPattern {
[INFO] [stdout]     |        -------------------- field in this struct
[INFO] [stdout] 978 |     compound_path: CompoundPath,
[INFO] [stdout] 979 |     brace_token: Option<Brace>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedCompoundPattern` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `arrow` and `brace_token` are never read
[INFO] [stdout]     --> src/lib.rs:1111:5
[INFO] [stdout]      |
[INFO] [stdout] 1109 | struct PatternArm {
[INFO] [stdout]      |        ---------- fields in this struct
[INFO] [stdout] 1110 |     patterns: Vec<Pattern>,
[INFO] [stdout] 1111 |     arrow: Token![=>],
[INFO] [stdout]      |     ^^^^^
[INFO] [stdout] 1112 |     brace_token: Option<Brace>,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PatternArm` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `for_token`, `in_token`, and `brace_token` are never read
[INFO] [stdout]     --> src/lib.rs:1282:5
[INFO] [stdout]      |
[INFO] [stdout] 1281 | struct For {
[INFO] [stdout]      |        --- fields in this struct
[INFO] [stdout] 1282 |     for_token: Token![for],
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 1283 |     pattern: Ident,
[INFO] [stdout] 1284 |     in_token: Token![in],
[INFO] [stdout]      |     ^^^^^^^^
[INFO] [stdout] 1285 |     coll: syn::Expr,
[INFO] [stdout] 1286 |     brace_token: Brace,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `For` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:1643:13
[INFO] [stdout]      |
[INFO] [stdout] 1643 |     Succeed(syn::LitBool),
[INFO] [stdout]      |     ------- ^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Clause` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1643 -     Succeed(syn::LitBool),
[INFO] [stdout] 1643 +     Succeed(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:1645:10
[INFO] [stdout]      |
[INFO] [stdout] 1645 |     Fail(syn::LitBool),
[INFO] [stdout]      |     ---- ^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Clause` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1645 -     Fail(syn::LitBool),
[INFO] [stdout] 1645 +     Fail(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "e27191e3db8604d25c6374f7fb94379769a9b5e4e27ff4a89691a424e483824c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e27191e3db8604d25c6374f7fb94379769a9b5e4e27ff4a89691a424e483824c", kill_on_drop: false }`
[INFO] [stdout] e27191e3db8604d25c6374f7fb94379769a9b5e4e27ff4a89691a424e483824c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7382263bb8c8ee541f4e4c56d670d2443f00a963e09924fb9dd566bddf363fa
[INFO] running `Command { std: "docker" "start" "-a" "f7382263bb8c8ee541f4e4c56d670d2443f00a963e09924fb9dd566bddf363fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling proto-vulcan-macros v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:369:5
[INFO] [stdout]     |
[INFO] [stdout] 367 | struct UnnamedCompoundConstructor {
[INFO] [stdout]     |        -------------------------- field in this struct
[INFO] [stdout] 368 |     compound_path: CompoundPath,
[INFO] [stdout] 369 |     paren_token: Option<Paren>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UnnamedCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]    --> src/lib.rs:391:5
[INFO] [stdout]     |
[INFO] [stdout] 389 | struct NamedCompoundConstructor {
[INFO] [stdout]     |        ------------------------ field in this struct
[INFO] [stdout] 390 |     compound_path: CompoundPath,
[INFO] [stdout] 391 |     brace_token: Option<Brace>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:412:5
[INFO] [stdout]     |
[INFO] [stdout] 411 | struct TupleCompoundConstructor {
[INFO] [stdout]     |        ------------------------ field in this struct
[INFO] [stdout] 412 |     paren_token: Paren,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TupleCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `num_snake_case` are never read
[INFO] [stdout]    --> src/lib.rs:850:5
[INFO] [stdout]     |
[INFO] [stdout] 848 | struct CompoundPath {
[INFO] [stdout]     |        ------------ fields in this struct
[INFO] [stdout] 849 |     leading_colon: Option<Token![::]>,
[INFO] [stdout] 850 |     path: Punctuated<Ident, Token![::]>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 851 |     num_snake_case: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CompoundPath` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:947:5
[INFO] [stdout]     |
[INFO] [stdout] 945 | struct UnnamedCompoundPattern {
[INFO] [stdout]     |        ---------------------- field in this struct
[INFO] [stdout] 946 |     compound_path: CompoundPath,
[INFO] [stdout] 947 |     paren_token: Option<Paren>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UnnamedCompoundPattern` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]    --> src/lib.rs:979:5
[INFO] [stdout]     |
[INFO] [stdout] 977 | struct NamedCompoundPattern {
[INFO] [stdout]     |        -------------------- field in this struct
[INFO] [stdout] 978 |     compound_path: CompoundPath,
[INFO] [stdout] 979 |     brace_token: Option<Brace>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedCompoundPattern` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `arrow` and `brace_token` are never read
[INFO] [stdout]     --> src/lib.rs:1111:5
[INFO] [stdout]      |
[INFO] [stdout] 1109 | struct PatternArm {
[INFO] [stdout]      |        ---------- fields in this struct
[INFO] [stdout] 1110 |     patterns: Vec<Pattern>,
[INFO] [stdout] 1111 |     arrow: Token![=>],
[INFO] [stdout]      |     ^^^^^
[INFO] [stdout] 1112 |     brace_token: Option<Brace>,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PatternArm` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `for_token`, `in_token`, and `brace_token` are never read
[INFO] [stdout]     --> src/lib.rs:1282:5
[INFO] [stdout]      |
[INFO] [stdout] 1281 | struct For {
[INFO] [stdout]      |        --- fields in this struct
[INFO] [stdout] 1282 |     for_token: Token![for],
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 1283 |     pattern: Ident,
[INFO] [stdout] 1284 |     in_token: Token![in],
[INFO] [stdout]      |     ^^^^^^^^
[INFO] [stdout] 1285 |     coll: syn::Expr,
[INFO] [stdout] 1286 |     brace_token: Brace,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `For` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:1643:13
[INFO] [stdout]      |
[INFO] [stdout] 1643 |     Succeed(syn::LitBool),
[INFO] [stdout]      |     ------- ^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Clause` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1643 -     Succeed(syn::LitBool),
[INFO] [stdout] 1643 +     Succeed(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:1645:10
[INFO] [stdout]      |
[INFO] [stdout] 1645 |     Fail(syn::LitBool),
[INFO] [stdout]      |     ---- ^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Clause` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1645 -     Fail(syn::LitBool),
[INFO] [stdout] 1645 +     Fail(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:369:5
[INFO] [stdout]     |
[INFO] [stdout] 367 | struct UnnamedCompoundConstructor {
[INFO] [stdout]     |        -------------------------- field in this struct
[INFO] [stdout] 368 |     compound_path: CompoundPath,
[INFO] [stdout] 369 |     paren_token: Option<Paren>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UnnamedCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]    --> src/lib.rs:391:5
[INFO] [stdout]     |
[INFO] [stdout] 389 | struct NamedCompoundConstructor {
[INFO] [stdout]     |        ------------------------ field in this struct
[INFO] [stdout] 390 |     compound_path: CompoundPath,
[INFO] [stdout] 391 |     brace_token: Option<Brace>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:412:5
[INFO] [stdout]     |
[INFO] [stdout] 411 | struct TupleCompoundConstructor {
[INFO] [stdout]     |        ------------------------ field in this struct
[INFO] [stdout] 412 |     paren_token: Paren,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TupleCompoundConstructor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path` and `num_snake_case` are never read
[INFO] [stdout]    --> src/lib.rs:850:5
[INFO] [stdout]     |
[INFO] [stdout] 848 | struct CompoundPath {
[INFO] [stdout]     |        ------------ fields in this struct
[INFO] [stdout] 849 |     leading_colon: Option<Token![::]>,
[INFO] [stdout] 850 |     path: Punctuated<Ident, Token![::]>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 851 |     num_snake_case: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CompoundPath` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren_token` is never read
[INFO] [stdout]    --> src/lib.rs:947:5
[INFO] [stdout]     |
[INFO] [stdout] 945 | struct UnnamedCompoundPattern {
[INFO] [stdout]     |        ---------------------- field in this struct
[INFO] [stdout] 946 |     compound_path: CompoundPath,
[INFO] [stdout] 947 |     paren_token: Option<Paren>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `UnnamedCompoundPattern` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]    --> src/lib.rs:979:5
[INFO] [stdout]     |
[INFO] [stdout] 977 | struct NamedCompoundPattern {
[INFO] [stdout]     |        -------------------- field in this struct
[INFO] [stdout] 978 |     compound_path: CompoundPath,
[INFO] [stdout] 979 |     brace_token: Option<Brace>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedCompoundPattern` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `arrow` and `brace_token` are never read
[INFO] [stdout]     --> src/lib.rs:1111:5
[INFO] [stdout]      |
[INFO] [stdout] 1109 | struct PatternArm {
[INFO] [stdout]      |        ---------- fields in this struct
[INFO] [stdout] 1110 |     patterns: Vec<Pattern>,
[INFO] [stdout] 1111 |     arrow: Token![=>],
[INFO] [stdout]      |     ^^^^^
[INFO] [stdout] 1112 |     brace_token: Option<Brace>,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `PatternArm` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `for_token`, `in_token`, and `brace_token` are never read
[INFO] [stdout]     --> src/lib.rs:1282:5
[INFO] [stdout]      |
[INFO] [stdout] 1281 | struct For {
[INFO] [stdout]      |        --- fields in this struct
[INFO] [stdout] 1282 |     for_token: Token![for],
[INFO] [stdout]      |     ^^^^^^^^^
[INFO] [stdout] 1283 |     pattern: Ident,
[INFO] [stdout] 1284 |     in_token: Token![in],
[INFO] [stdout]      |     ^^^^^^^^
[INFO] [stdout] 1285 |     coll: syn::Expr,
[INFO] [stdout] 1286 |     brace_token: Brace,
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `For` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:1643:13
[INFO] [stdout]      |
[INFO] [stdout] 1643 |     Succeed(syn::LitBool),
[INFO] [stdout]      |     ------- ^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Clause` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1643 -     Succeed(syn::LitBool),
[INFO] [stdout] 1643 +     Succeed(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/lib.rs:1645:10
[INFO] [stdout]      |
[INFO] [stdout] 1645 |     Fail(syn::LitBool),
[INFO] [stdout]      |     ---- ^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `Clause` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1645 -     Fail(syn::LitBool),
[INFO] [stdout] 1645 +     Fail(()),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `Command { std: "docker" "inspect" "f7382263bb8c8ee541f4e4c56d670d2443f00a963e09924fb9dd566bddf363fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7382263bb8c8ee541f4e4c56d670d2443f00a963e09924fb9dd566bddf363fa", kill_on_drop: false }`
[INFO] [stdout] f7382263bb8c8ee541f4e4c56d670d2443f00a963e09924fb9dd566bddf363fa
