[INFO] cloning repository https://github.com/pandemonium/sylt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pandemonium/sylt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpandemonium%2Fsylt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpandemonium%2Fsylt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90d39897c2bb9811c62735c630874a56876af318
[INFO] building pandemonium/sylt against try#9a3ef2cd3ecaae3c6ef59768612837d797602a6d for pr-137044-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpandemonium%2Fsylt" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pandemonium/sylt on toolchain 9a3ef2cd3ecaae3c6ef59768612837d797602a6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pandemonium/sylt
[INFO] finished tweaking git repo https://github.com/pandemonium/sylt
[INFO] tweaked toml for git repo https://github.com/pandemonium/sylt written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/pandemonium/sylt 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" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9d2510645490c0d406b3caf518b9591ae59d7cf0689b1fd0fe6bc4fec16f1b0
[INFO] running `Command { std: "docker" "start" "-a" "d9d2510645490c0d406b3caf518b9591ae59d7cf0689b1fd0fe6bc4fec16f1b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9d2510645490c0d406b3caf518b9591ae59d7cf0689b1fd0fe6bc4fec16f1b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9d2510645490c0d406b3caf518b9591ae59d7cf0689b1fd0fe6bc4fec16f1b0", kill_on_drop: false }`
[INFO] [stdout] d9d2510645490c0d406b3caf518b9591ae59d7cf0689b1fd0fe6bc4fec16f1b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90ccc12f469d8dfd6affc546dce0b1c270a2d73d41d81189d085f85fea392bb0
[INFO] running `Command { std: "docker" "start" "-a" "90ccc12f469d8dfd6affc546dce0b1c270a2d73d41d81189d085f85fea392bb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling sylt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `element`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:170:66
[INFO] [stdout]     |
[INFO] [stdout] 170 |             ast::Expression::PutArrayElement { array, subscript, element } => {
[INFO] [stdout]     |                                                                  ^^^^^^^ help: try ignoring the field: `element: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:277:21
[INFO] [stdout]     |
[INFO] [stdout] 277 |                     array,
[INFO] [stdout]     |                     ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subscript`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:278:21
[INFO] [stdout]     |
[INFO] [stdout] 278 |                     subscript,
[INFO] [stdout]     |                     ^^^^^^^^^ help: try ignoring the field: `subscript: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |                     rhs,
[INFO] [stdout]     |                     ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:43
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                           ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subscript`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:50
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                                  ^^^^^^^^^ help: try ignoring the field: `subscript: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:61
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                                             ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `types_unify` and `put_array_element` are never used
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:87:8
[INFO] [stdout]     |
[INFO] [stdout] 51  | impl<'a> ActivationFrame<'a> {
[INFO] [stdout]     | ---------------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 87  |     fn types_unify(lhs: &ast::Type, rhs: &ast::Type) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 223 |     fn put_array_element(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_get_element` is never used
[INFO] [stdout]    --> src/syntax.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn array_get_element() -> impl Parser<In = lex::Token, Out = ast::Expression> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `self` and `vm`
[INFO] [stdout]  --> src/main.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |         bytecode::{self, vm},
[INFO] [stdout]   |                    ^^^^  ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let source = r#"
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.89s
[INFO] running `Command { std: "docker" "inspect" "90ccc12f469d8dfd6affc546dce0b1c270a2d73d41d81189d085f85fea392bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90ccc12f469d8dfd6affc546dce0b1c270a2d73d41d81189d085f85fea392bb0", kill_on_drop: false }`
[INFO] [stdout] 90ccc12f469d8dfd6affc546dce0b1c270a2d73d41d81189d085f85fea392bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9a3ef2cd3ecaae3c6ef59768612837d797602a6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e17e1ef24c964bb859252b0618c007908a318cb903fbfeca19e5419cad582295
[INFO] running `Command { std: "docker" "start" "-a" "e17e1ef24c964bb859252b0618c007908a318cb903fbfeca19e5419cad582295", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `element`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:170:66
[INFO] [stdout]     |
[INFO] [stdout] 170 |             ast::Expression::PutArrayElement { array, subscript, element } => {
[INFO] [stdout]     |                                                                  ^^^^^^^ help: try ignoring the field: `element: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:277:21
[INFO] [stdout]     |
[INFO] [stdout] 277 |                     array,
[INFO] [stdout]     |                     ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subscript`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:278:21
[INFO] [stdout]     |
[INFO] [stdout] 278 |                     subscript,
[INFO] [stdout]     |                     ^^^^^^^^^ help: try ignoring the field: `subscript: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |                     rhs,
[INFO] [stdout]     |                     ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:43
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                           ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sylt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `subscript`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:50
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                                  ^^^^^^^^^ help: try ignoring the field: `subscript: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:61
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                                             ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `types_unify` and `put_array_element` are never used
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:87:8
[INFO] [stdout]     |
[INFO] [stdout] 51  | impl<'a> ActivationFrame<'a> {
[INFO] [stdout]     | ---------------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 87  |     fn types_unify(lhs: &ast::Type, rhs: &ast::Type) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 223 |     fn put_array_element(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_get_element` is never used
[INFO] [stdout]    --> src/syntax.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn array_get_element() -> impl Parser<In = lex::Token, Out = ast::Expression> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `self` and `vm`
[INFO] [stdout]  --> src/main.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |         bytecode::{self, vm},
[INFO] [stdout]   |                    ^^^^  ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let source = r#"
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Scalar`, `Compound`, and `Null` are never constructed
[INFO] [stdout]  --> examples/json.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Value {
[INFO] [stdout]   |      ----- variants in this enum
[INFO] [stdout] 5 |     Scalar(ScalarValue),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     Compound(CompoundValue),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 7 |     Null,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Value` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `parse` is never used
[INFO] [stdout]   --> examples/json.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Value {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn parse(json_text: &str) -> Option<Self> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Number`, `Text`, and `Boolean` are never constructed
[INFO] [stdout]   --> examples/json.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum ScalarValue {
[INFO] [stdout]    |      ----------- variants in this enum
[INFO] [stdout] 20 |     Number(f64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 21 |     Text(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 22 |     Boolean(bool),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ScalarValue` 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: variants `Array` and `Object` are never constructed
[INFO] [stdout]   --> examples/json.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum CompoundValue {
[INFO] [stdout]    |      ------------- variants in this enum
[INFO] [stdout] 27 |     Array(Vec<Value>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 28 |     Object(Vec<(String, Value)>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompoundValue` 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: function `ws` is never used
[INFO] [stdout]   --> examples/json.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn ws() -> impl Parser<Out = (), In = char> {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `null` is never used
[INFO] [stdout]   --> examples/json.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn null() -> impl Parser<Out = Value, In = char> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit` is never used
[INFO] [stdout]   --> examples/json.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn digit() -> impl Parser<In = char, Out = char> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `number` is never used
[INFO] [stdout]   --> examples/json.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn number() -> impl Parser<Out = ScalarValue, In = char> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `text` is never used
[INFO] [stdout]   --> examples/json.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn text() -> impl Parser<Out = String, In = char> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `boolean` is never used
[INFO] [stdout]   --> examples/json.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn boolean() -> impl Parser<Out = ScalarValue, In = char> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scalar` is never used
[INFO] [stdout]   --> examples/json.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn scalar() -> impl Parser<Out = Value, In = char> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array` is never used
[INFO] [stdout]   --> examples/json.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn array() -> impl Parser<Out = CompoundValue, In = char> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `object` is never used
[INFO] [stdout]   --> examples/json.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn object() -> impl Parser<Out = CompoundValue, In = char> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compound` is never used
[INFO] [stdout]    --> examples/json.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn compound() -> impl Parser<Out = Value, In = char> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value` is never used
[INFO] [stdout]    --> examples/json.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn value() -> ParsimoniousValue {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParsimoniousValue` is never constructed
[INFO] [stdout]    --> examples/json.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct ParsimoniousValue;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `element`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:170:66
[INFO] [stdout]     |
[INFO] [stdout] 170 |             ast::Expression::PutArrayElement { array, subscript, element } => {
[INFO] [stdout]     |                                                                  ^^^^^^^ help: try ignoring the field: `element: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:277:21
[INFO] [stdout]     |
[INFO] [stdout] 277 |                     array,
[INFO] [stdout]     |                     ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subscript`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:278:21
[INFO] [stdout]     |
[INFO] [stdout] 278 |                     subscript,
[INFO] [stdout]     |                     ^^^^^^^^^ help: try ignoring the field: `subscript: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |                     rhs,
[INFO] [stdout]     |                     ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:43
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                           ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subscript`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:50
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                                  ^^^^^^^^^ help: try ignoring the field: `subscript: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/runtime/bytecode/compiler.rs:156:61
[INFO] [stdout]     |
[INFO] [stdout] 156 |             ast::Statement::ArrayUpdate { array, subscript, rhs } => {
[INFO] [stdout]     |                                                             ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `types_unify` and `put_array_element` are never used
[INFO] [stdout]    --> src/runtime/ast/interpreter.rs:87:8
[INFO] [stdout]     |
[INFO] [stdout] 51  | impl<'a> ActivationFrame<'a> {
[INFO] [stdout]     | ---------------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 87  |     fn types_unify(lhs: &ast::Type, rhs: &ast::Type) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 223 |     fn put_array_element(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `array_get_element` is never used
[INFO] [stdout]    --> src/syntax.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn array_get_element() -> impl Parser<In = lex::Token, Out = ast::Expression> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sylt` (lib test); 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/9a3ef2cd3ecaae3c6ef59768612837d797602a6d/bin/rustc --crate-name sylt --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=e0702aaa2a3f6ce7 -C extra-filename=-81a145a080e9092a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "e17e1ef24c964bb859252b0618c007908a318cb903fbfeca19e5419cad582295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e17e1ef24c964bb859252b0618c007908a318cb903fbfeca19e5419cad582295", kill_on_drop: false }`
[INFO] [stdout] e17e1ef24c964bb859252b0618c007908a318cb903fbfeca19e5419cad582295