[INFO] fetching crate zenlang 0.4.0...
[INFO] checking zenlang-0.4.0 against eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] extracting crate zenlang 0.4.0 into /workspace/builds/worker-1-tc1/source
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate zenlang 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate zenlang 0.4.0
[INFO] tweaked toml for crates.io crate zenlang 0.4.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zenlang 0.4.0 on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zenlang 0.4.0 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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:117:1
[INFO] [stderr]     |
[INFO] [stderr] 117 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `zenlang` (manifest) generated 1 warning
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zenlang-macros v0.4.0
[INFO] [stderr]   Downloaded lsp-server v0.8.0
[INFO] [stderr]   Downloaded nanoid v0.5.0
[INFO] [stderr]   Downloaded camino v1.2.3
[INFO] [stderr]   Downloaded arena-b v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6
[INFO] running `Command { std: "docker" "start" "95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:117:1
[INFO] [stderr]     |
[INFO] [stderr] 117 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `zenlang` (manifest) generated 1 warning
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]     Checking smallvec v1.15.2
[INFO] [stderr]    Compiling nix v0.31.3
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking memchr v2.8.2
[INFO] [stderr]    Compiling camino v1.2.3
[INFO] [stderr]     Checking time v0.3.51
[INFO] [stderr]     Checking fluent-uri v0.1.4
[INFO] [stderr]     Checking symlink v0.1.0
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[INFO] [stderr]     Checking rand_core v0.9.5
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[INFO] [stderr]     Checking ctrlc v3.5.2
[INFO] [stderr]     Checking nanoid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling serde_repr v0.1.20
[INFO] [stderr]    Compiling strum_macros v0.28.0
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling snafu-derive v0.9.1
[INFO] [stderr]    Compiling clap_derive v4.6.1
[INFO] [stderr]    Compiling zenlang-macros v0.4.0
[INFO] [stderr]     Checking thiserror v2.0.18
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[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking tracing-appender v0.2.5
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking lsp-types v0.97.0
[INFO] [stderr]     Checking lsp-server v0.8.0
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking icu_properties v2.2.0
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[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking zenlang v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `is_pub` is never used
[INFO] [stdout]   --> src/ast.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Vis {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 16 |     pub fn is_pub(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodeId` is never used
[INFO] [stdout]    --> src/ast.rs:136:10
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type NodeId = usize;
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mutable` is never read
[INFO] [stdout]    --> src/ast.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |     Let {
[INFO] [stdout]     |     --- field in this variant
[INFO] [stdout] 173 |         mutable: bool,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:180:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |     Const {
[INFO] [stdout]     |     ----- field in this variant
[INFO] [stdout] 180 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |     Type {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] 187 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |     Fn {
[INFO] [stdout]     |     -- field in this variant
[INFO] [stdout] 199 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:208:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |     Struct {
[INFO] [stdout]     |     ------ field in this variant
[INFO] [stdout] 208 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |     Enum {
[INFO] [stdout]     |     ---- field in this variant
[INFO] [stdout] 215 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:230:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |     Trait {
[INFO] [stdout]     |     ----- field in this variant
[INFO] [stdout] 230 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:236:11
[INFO] [stdout]     |
[INFO] [stdout] 236 |     Use { vis: Vis, path: Vec<CompactString> },
[INFO] [stdout]     |     ---   ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 238 |     Mod {
[INFO] [stdout]     |     --- field in this variant
[INFO] [stdout] 239 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `return_type` is never read
[INFO] [stdout]    --> src/ast.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 362 |     Lambda {
[INFO] [stdout]     |     ------ field in this variant
[INFO] [stdout] 363 |         params: Vec<Param>,
[INFO] [stdout] 364 |         return_type: Option<Type>,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `resolve` is never used
[INFO] [stdout]  --> src/resolver.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn resolve(program: &mut Program) -> Result<SymbolTable> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove`, `len`, `is_empty`, `clear`, and `iter_handles` are never used
[INFO] [stdout]    --> src/slab.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout]  42 | impl<T> Slab<T> {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 104 |     pub fn remove(&mut self, handle: Handle) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn clear(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn iter_handles(&self) -> impl Iterator<Item = Handle> + '_ {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `clone_all` is never used
[INFO] [stdout]    --> src/slab.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 156 | impl<T: Clone> Slab<T> {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] 157 |     pub fn clone_all(&self) -> Vec<(Handle, T)> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `type_params` are never read
[INFO] [stdout]   --> src/symbol.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct StructDef {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 17 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |     pub type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StructDef` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `type_params` are never read
[INFO] [stdout]   --> src/symbol.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct EnumDef {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 24 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 25 |     pub type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnumDef` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `type_params` are never read
[INFO] [stdout]   --> src/symbol.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct TraitDef {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 32 |     /// The name of the trait.
[INFO] [stdout] 33 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 34 |     /// Generic type parameters on the trait.
[INFO] [stdout] 35 |     pub type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TraitDef` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `type_params` is never read
[INFO] [stdout]   --> src/symbol.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     TypeAlias {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 58 |         type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SymKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/symbol.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct SymEntry {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 74 |     pub id: SymId,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SymEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup_global`, `globals`, and `update_variable_type` are never used
[INFO] [stdout]    --> src/symbol.rs:154:12
[INFO] [stdout]     |
[INFO] [stdout]  94 | impl SymbolTable {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 154 |     pub fn lookup_global(&self, name: &str) -> Option<&SymEntry> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     pub fn globals(&self) -> &HashMap<String, SymEntry> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 170 |     pub fn update_variable_type(&mut self, name: &str, ty: Type) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodeId` is never used
[INFO] [stdout]   --> src/typeck.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type NodeId = usize;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodeId` is never used
[INFO] [stdout]    --> src/ast.rs:136:10
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub type NodeId = usize;
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:230:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |     Trait {
[INFO] [stdout]     |     ----- field in this variant
[INFO] [stdout] 230 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:236:11
[INFO] [stdout]     |
[INFO] [stdout] 236 |     Use { vis: Vis, path: Vec<CompactString> },
[INFO] [stdout]     |     ---   ^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]    --> src/ast.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 238 |     Mod {
[INFO] [stdout]     |     --- field in this variant
[INFO] [stdout] 239 |         vis: Vis,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `return_type` is never read
[INFO] [stdout]    --> src/ast.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 362 |     Lambda {
[INFO] [stdout]     |     ------ field in this variant
[INFO] [stdout] 363 |         params: Vec<Param>,
[INFO] [stdout] 364 |         return_type: Option<Type>,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `remove`, `len`, `is_empty`, `clear`, and `iter_handles` are never used
[INFO] [stdout]    --> src/slab.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout]  42 | impl<T> Slab<T> {
[INFO] [stdout]     | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 104 |     pub fn remove(&mut self, handle: Handle) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn clear(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn iter_handles(&self) -> impl Iterator<Item = Handle> + '_ {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `clone_all` is never used
[INFO] [stdout]    --> src/slab.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 156 | impl<T: Clone> Slab<T> {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] 157 |     pub fn clone_all(&self) -> Vec<(Handle, T)> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `type_params` are never read
[INFO] [stdout]   --> src/symbol.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct StructDef {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 17 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |     pub type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StructDef` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `type_params` are never read
[INFO] [stdout]   --> src/symbol.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct EnumDef {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 24 |     pub name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 25 |     pub type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnumDef` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `type_params` is never read
[INFO] [stdout]   --> src/symbol.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct TraitDef {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TraitDef` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `type_params` is never read
[INFO] [stdout]   --> src/symbol.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     TypeAlias {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 58 |         type_params: Vec<TypeParam>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SymKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/symbol.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub struct SymEntry {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 74 |     pub id: SymId,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SymEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup_global`, `globals`, and `update_variable_type` are never used
[INFO] [stdout]    --> src/symbol.rs:154:12
[INFO] [stdout]     |
[INFO] [stdout]  94 | impl SymbolTable {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 154 |     pub fn lookup_global(&self, name: &str) -> Option<&SymEntry> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     pub fn globals(&self) -> &HashMap<String, SymEntry> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 170 |     pub fn update_variable_type(&mut self, name: &str, ty: Type) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodeId` is never used
[INFO] [stdout]   --> src/typeck.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type NodeId = usize;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused dependency `arena-b`
[INFO] [stderr]  --> Cargo.toml:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | [dependencies.arena-b]
[INFO] [stderr]   |               ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `arena-b`
[INFO] [stderr] warning: unused dependency `bytes`
[INFO] [stderr]  --> Cargo.toml:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | [dependencies.bytes]
[INFO] [stderr]   |               ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: consider removing the dependency on `bytes`
[INFO] [stderr] warning: unused dependency `derive_more`
[INFO] [stderr]   --> Cargo.toml:24:15
[INFO] [stderr]    |
[INFO] [stderr] 24 | [dependencies.derive_more]
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `derive_more`
[INFO] [stderr] warning: unused dependency `itertools`
[INFO] [stderr]   --> Cargo.toml:28:15
[INFO] [stderr]    |
[INFO] [stderr] 28 | [dependencies.itertools]
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `itertools`
[INFO] [stderr] warning: unused dependency `nanoid`
[INFO] [stderr]   --> Cargo.toml:37:15
[INFO] [stderr]    |
[INFO] [stderr] 37 | [dependencies.nanoid]
[INFO] [stderr]    |               ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `nanoid`
[INFO] [stderr] warning: unused dependency `strum`
[INFO] [stderr]   --> Cargo.toml:53:15
[INFO] [stderr]    |
[INFO] [stderr] 53 | [dependencies.strum]
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `strum`
[INFO] [stderr] warning: unused dependency `url`
[INFO] [stderr]   --> Cargo.toml:70:15
[INFO] [stderr]    |
[INFO] [stderr] 70 | [dependencies.url]
[INFO] [stderr]    |               ^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `url`
[INFO] [stderr] warning: `zenlang` (manifest) generated 7 warnings
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 44.04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nix v0.31.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6", kill_on_drop: false }`
[INFO] [stdout] 95b469ae0c5108c5c5a64e28c4f9c9579ecdea2bb8eace58925d3cfd566789a6
