[INFO] fetching crate mbot_proc_macro_helpers 0.0.2...
[INFO] testing mbot_proc_macro_helpers-0.0.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mbot_proc_macro_helpers 0.0.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate mbot_proc_macro_helpers 0.0.2
[INFO] finished tweaking crates.io crate mbot_proc_macro_helpers 0.0.2
[INFO] tweaked toml for crates.io crate mbot_proc_macro_helpers 0.0.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mbot_proc_macro_helpers 0.0.2 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding derive-syn-parse v0.1.5 (available: v0.2.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.12.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.108)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d29aaf74ab334810407353a962049ad97331e3ecdc475e88fa2428917b1004d8
[INFO] running `Command { std: "docker" "start" "-a" "d29aaf74ab334810407353a962049ad97331e3ecdc475e88fa2428917b1004d8", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "d29aaf74ab334810407353a962049ad97331e3ecdc475e88fa2428917b1004d8", kill_on_drop: false }`
[INFO] [stdout] d29aaf74ab334810407353a962049ad97331e3ecdc475e88fa2428917b1004d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7241e246340c82714ba72ecb1df5f62a4b7a5969973a83c9532481f4c7cb592c
[INFO] running `Command { std: "docker" "start" "-a" "7241e246340c82714ba72ecb1df5f62a4b7a5969973a83c9532481f4c7cb592c", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling derive-syn-parse v0.1.5
[INFO] [stderr]    Compiling mbot_proc_macro_helpers v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expected_prefix_width`
[INFO] [stdout]    --> src/mice/stack_bytecode.rs:360:17
[INFO] [stdout]     |
[INFO] [stdout] 360 |             let expected_prefix_width: usize = 1;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_prefix_width`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `colon_token` and `trailing_comma` are never read
[INFO] [stdout]   --> src/mice.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct UnaryPower {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 11 |     colon_token: Token![:],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 12 |     power: proc_macro2::Literal,
[INFO] [stdout] 13 |     trailing_comma: Option<Token![,]>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UnaryPower` 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] [stdout] warning: fields `unary_ident` and `binary_ident` are never read
[INFO] [stdout]   --> src/mice.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct BindingPowers {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 31 |     unary_ident: Option<Ident>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     binary_ident: Option<Ident>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindingPowers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]   --> src/mice.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Variant {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 48 |     brace_token: Brace,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Variant` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind_token`, `arrow_token`, `arg_paren`, and `semicolon_token` are never read
[INFO] [stdout]   --> src/mice.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct BindingPowerFnDecl {
[INFO] [stdout]    |        ------------------ fields in this struct
[INFO] [stdout] 55 |     kind_token: Ident,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 56 |     arrow_token: Token![=>],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     arg_paren: Paren,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     semicolon_token: Token![;],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindingPowerFnDecl` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sum_equal_token` and `brace_token` are never read
[INFO] [stdout]   --> src/mice.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct DeclOps {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 79 |     sum_equal_token: Token![=],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     brace_token: Brace,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DeclOps` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ErrNoSpan` is never constructed
[INFO] [stdout]   --> src/mice/stack_bytecode.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum CompileResult<T> {
[INFO] [stdout]    |      ------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     ErrNoSpan(Cow<'static, str>),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `into_lift_error` and `lift_error` are never used
[INFO] [stdout]   --> src/mice/stack_bytecode.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> CompileResult<T> {
[INFO] [stdout]    | ------------------------ methods in this implementation
[INFO] [stdout] 22 |     fn into_lift_error(self, out: &mut TokenStream) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn lift_error(&self, out: &mut TokenStream) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.52s
[INFO] running `Command { std: "docker" "inspect" "7241e246340c82714ba72ecb1df5f62a4b7a5969973a83c9532481f4c7cb592c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7241e246340c82714ba72ecb1df5f62a4b7a5969973a83c9532481f4c7cb592c", kill_on_drop: false }`
[INFO] [stdout] 7241e246340c82714ba72ecb1df5f62a4b7a5969973a83c9532481f4c7cb592c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a4d5eae54ca1c9f44a8f497b7338c3c4ed4b8fe381f1d8bc2c5b7330af4f391
[INFO] running `Command { std: "docker" "start" "-a" "1a4d5eae54ca1c9f44a8f497b7338c3c4ed4b8fe381f1d8bc2c5b7330af4f391", kill_on_drop: false }`
[INFO] [stderr]    Compiling mbot_proc_macro_helpers v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `expected_prefix_width`
[INFO] [stdout]    --> src/mice/stack_bytecode.rs:360:17
[INFO] [stdout]     |
[INFO] [stdout] 360 |             let expected_prefix_width: usize = 1;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_prefix_width`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_prefix_width`
[INFO] [stdout]    --> src/mice/stack_bytecode.rs:360:17
[INFO] [stdout]     |
[INFO] [stdout] 360 |             let expected_prefix_width: usize = 1;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_prefix_width`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `colon_token` and `trailing_comma` are never read
[INFO] [stdout]   --> src/mice.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct UnaryPower {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 11 |     colon_token: Token![:],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 12 |     power: proc_macro2::Literal,
[INFO] [stdout] 13 |     trailing_comma: Option<Token![,]>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UnaryPower` 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] [stdout] warning: fields `unary_ident` and `binary_ident` are never read
[INFO] [stdout]   --> src/mice.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct BindingPowers {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 31 |     unary_ident: Option<Ident>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     binary_ident: Option<Ident>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindingPowers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]   --> src/mice.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Variant {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 48 |     brace_token: Brace,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Variant` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind_token`, `arrow_token`, `arg_paren`, and `semicolon_token` are never read
[INFO] [stdout]   --> src/mice.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct BindingPowerFnDecl {
[INFO] [stdout]    |        ------------------ fields in this struct
[INFO] [stdout] 55 |     kind_token: Ident,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 56 |     arrow_token: Token![=>],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     arg_paren: Paren,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     semicolon_token: Token![;],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindingPowerFnDecl` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sum_equal_token` and `brace_token` are never read
[INFO] [stdout]   --> src/mice.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct DeclOps {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 79 |     sum_equal_token: Token![=],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     brace_token: Brace,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DeclOps` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ErrNoSpan` is never constructed
[INFO] [stdout]   --> src/mice/stack_bytecode.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum CompileResult<T> {
[INFO] [stdout]    |      ------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     ErrNoSpan(Cow<'static, str>),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `into_lift_error` and `lift_error` are never used
[INFO] [stdout]   --> src/mice/stack_bytecode.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> CompileResult<T> {
[INFO] [stdout]    | ------------------------ methods in this implementation
[INFO] [stdout] 22 |     fn into_lift_error(self, out: &mut TokenStream) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn lift_error(&self, out: &mut TokenStream) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `colon_token` and `trailing_comma` are never read
[INFO] [stdout]   --> src/mice.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct UnaryPower {
[INFO] [stdout]    |        ---------- fields in this struct
[INFO] [stdout] 11 |     colon_token: Token![:],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 12 |     power: proc_macro2::Literal,
[INFO] [stdout] 13 |     trailing_comma: Option<Token![,]>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UnaryPower` 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] [stdout] warning: fields `unary_ident` and `binary_ident` are never read
[INFO] [stdout]   --> src/mice.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct BindingPowers {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 31 |     unary_ident: Option<Ident>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     binary_ident: Option<Ident>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindingPowers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace_token` is never read
[INFO] [stdout]   --> src/mice.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Variant {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 48 |     brace_token: Brace,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Variant` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind_token`, `arrow_token`, `arg_paren`, and `semicolon_token` are never read
[INFO] [stdout]   --> src/mice.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct BindingPowerFnDecl {
[INFO] [stdout]    |        ------------------ fields in this struct
[INFO] [stdout] 55 |     kind_token: Ident,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 56 |     arrow_token: Token![=>],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     arg_paren: Paren,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     semicolon_token: Token![;],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindingPowerFnDecl` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sum_equal_token` and `brace_token` are never read
[INFO] [stdout]   --> src/mice.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct DeclOps {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 79 |     sum_equal_token: Token![=],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     brace_token: Brace,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DeclOps` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ErrNoSpan` is never constructed
[INFO] [stdout]   --> src/mice/stack_bytecode.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum CompileResult<T> {
[INFO] [stdout]    |      ------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     ErrNoSpan(Cow<'static, str>),
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `into_lift_error` and `lift_error` are never used
[INFO] [stdout]   --> src/mice/stack_bytecode.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<T> CompileResult<T> {
[INFO] [stdout]    | ------------------------ methods in this implementation
[INFO] [stdout] 22 |     fn into_lift_error(self, out: &mut TokenStream) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn lift_error(&self, out: &mut TokenStream) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "1a4d5eae54ca1c9f44a8f497b7338c3c4ed4b8fe381f1d8bc2c5b7330af4f391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a4d5eae54ca1c9f44a8f497b7338c3c4ed4b8fe381f1d8bc2c5b7330af4f391", kill_on_drop: false }`
[INFO] [stdout] 1a4d5eae54ca1c9f44a8f497b7338c3c4ed4b8fe381f1d8bc2c5b7330af4f391
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 81f3d60457f5d7500e7cce3a63bd3d2b730c6889f30fde85da438710da4cac9a
[INFO] running `Command { std: "docker" "start" "-a" "81f3d60457f5d7500e7cce3a63bd3d2b730c6889f30fde85da438710da4cac9a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `expected_prefix_width`
[INFO] [stderr]    --> src/mice/stack_bytecode.rs:360:17
[INFO] [stderr]     |
[INFO] [stderr] 360 |             let expected_prefix_width: usize = 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_prefix_width`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `colon_token` and `trailing_comma` are never read
[INFO] [stderr]   --> src/mice.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct UnaryPower {
[INFO] [stderr]    |        ---------- fields in this struct
[INFO] [stderr] 11 |     colon_token: Token![:],
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 12 |     power: proc_macro2::Literal,
[INFO] [stderr] 13 |     trailing_comma: Option<Token![,]>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `UnaryPower` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `unary_ident` and `binary_ident` are never read
[INFO] [stderr]   --> src/mice.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct BindingPowers {
[INFO] [stderr]    |        ------------- fields in this struct
[INFO] [stderr] 31 |     unary_ident: Option<Ident>,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 34 |     binary_ident: Option<Ident>,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `BindingPowers` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: field `brace_token` is never read
[INFO] [stderr]   --> src/mice.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | struct Variant {
[INFO] [stderr]    |        ------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 48 |     brace_token: Brace,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Variant` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `kind_token`, `arrow_token`, `arg_paren`, and `semicolon_token` are never read
[INFO] [stderr]   --> src/mice.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 54 | struct BindingPowerFnDecl {
[INFO] [stderr]    |        ------------------ fields in this struct
[INFO] [stderr] 55 |     kind_token: Ident,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 56 |     arrow_token: Token![=>],
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |     arg_paren: Paren,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 67 |     semicolon_token: Token![;],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `BindingPowerFnDecl` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `sum_equal_token` and `brace_token` are never read
[INFO] [stderr]   --> src/mice.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 71 | struct DeclOps {
[INFO] [stderr]    |        ------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 79 |     sum_equal_token: Token![=],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |     brace_token: Brace,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DeclOps` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variant `ErrNoSpan` is never constructed
[INFO] [stderr]   --> src/mice/stack_bytecode.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | enum CompileResult<T> {
[INFO] [stderr]    |      ------------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 19 |     ErrNoSpan(Cow<'static, str>),
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `into_lift_error` and `lift_error` are never used
[INFO] [stderr]   --> src/mice/stack_bytecode.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl<T> CompileResult<T> {
[INFO] [stderr]    | ------------------------ methods in this implementation
[INFO] [stderr] 22 |     fn into_lift_error(self, out: &mut TokenStream) -> Self {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 26 |     fn lift_error(&self, out: &mut TokenStream) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mbot_proc_macro_helpers` (lib) generated 8 warnings (run `cargo fix --lib -p mbot_proc_macro_helpers` to apply 1 suggestion)
[INFO] [stderr] warning: `mbot_proc_macro_helpers` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mbot_proc_macro_helpers-43f591ceab70121e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mbot_proc_macro_helpers
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "81f3d60457f5d7500e7cce3a63bd3d2b730c6889f30fde85da438710da4cac9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81f3d60457f5d7500e7cce3a63bd3d2b730c6889f30fde85da438710da4cac9a", kill_on_drop: false }`
[INFO] [stdout] 81f3d60457f5d7500e7cce3a63bd3d2b730c6889f30fde85da438710da4cac9a