[INFO] cloning repository https://github.com/mikialex/rxsl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikialex/rxsl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikialex%2Frxsl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikialex%2Frxsl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e63e77cb1264ab0bd6e9c3ab7bade107282899b9
[INFO] checking mikialex/rxsl against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikialex%2Frxsl" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mikialex/rxsl on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mikialex/rxsl
[INFO] finished tweaking git repo https://github.com/mikialex/rxsl
[INFO] tweaked toml for git repo https://github.com/mikialex/rxsl written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mikialex/rxsl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ab76a7649c7f9345c0e40048450c2339fb09ce98fd49fbdf4bcdd44b5c02e762
[INFO] running `Command { std: "docker" "start" "-a" "ab76a7649c7f9345c0e40048450c2339fb09ce98fd49fbdf4bcdd44b5c02e762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab76a7649c7f9345c0e40048450c2339fb09ce98fd49fbdf4bcdd44b5c02e762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab76a7649c7f9345c0e40048450c2339fb09ce98fd49fbdf4bcdd44b5c02e762", kill_on_drop: false }`
[INFO] [stdout] ab76a7649c7f9345c0e40048450c2339fb09ce98fd49fbdf4bcdd44b5c02e762
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 055a425234dcd7c27a0239492416efba9cff6f88795434d080c8a307875c1200
[INFO] running `Command { std: "docker" "start" "-a" "055a425234dcd7c27a0239492416efba9cff6f88795434d080c8a307875c1200", kill_on_drop: false }`
[INFO] [stderr]     Checking rxsl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `parser::*`
[INFO] [stdout]  --> src/test/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     parser::*,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Block`, `ir::IRGenerator`, `parser::*`
[INFO] [stdout]  --> src/test/mod.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 |     ast::{Block, Expression, Statement, SyntaxElement},
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 3 |     ir::IRGenerator,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     lexer::Lexer,
[INFO] [stdout] 5 |     parser::*,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/ir.rs:600:39
[INFO] [stdout]     |
[INFO] [stdout] 600 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]     |                                       ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/ir.rs:600:46
[INFO] [stdout]     |
[INFO] [stdout] 600 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]     |                                              ^^^^^ help: try ignoring the field: `index: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]    --> src/ir.rs:601:38
[INFO] [stdout]     |
[INFO] [stdout] 601 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]     |                                      ^^^^ help: try ignoring the field: `from: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]    --> src/ir.rs:601:44
[INFO] [stdout]     |
[INFO] [stdout] 601 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]     |                                            ^^ help: try ignoring the field: `to: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_char_offset`
[INFO] [stdout]    --> src/lexer.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let start_char_offset = self.current_char_offset();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_char_offset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/validation.rs:50:48
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Expression::BinaryOperator { left, op, right } => {
[INFO] [stdout]    |                                                ^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]   --> src/validation.rs:60:39
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]    |                                       ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/validation.rs:60:46
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]    |                                              ^^^^^ help: try ignoring the field: `index: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]   --> src/validation.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `from: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]   --> src/validation.rs:61:44
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]    |                                            ^^ help: try ignoring the field: `to: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/validation.rs:62:34
[INFO] [stdout]    |
[INFO] [stdout] 62 |             Expression::Assign { left, right } => right.visit_by(self)?,
[INFO] [stdout]    |                                  ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/visitor.rs:79:33
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn visit_children_by(&self, visitor: &mut T) -> Result<(), E> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/visitor.rs:85:33
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn visit_children_by(&self, visitor: &mut T) -> Result<(), E> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/visitor.rs:91:33
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn visit_children_by(&self, visitor: &mut T) -> Result<(), E> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]    --> src/ir.rs:600:39
[INFO] [stdout]     |
[INFO] [stdout] 600 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]     |                                       ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/ir.rs:600:46
[INFO] [stdout]     |
[INFO] [stdout] 600 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]     |                                              ^^^^^ help: try ignoring the field: `index: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]    --> src/ir.rs:601:38
[INFO] [stdout]     |
[INFO] [stdout] 601 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]     |                                      ^^^^ help: try ignoring the field: `from: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]    --> src/ir.rs:601:44
[INFO] [stdout]     |
[INFO] [stdout] 601 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]     |                                            ^^ help: try ignoring the field: `to: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_char_offset`
[INFO] [stdout]    --> src/lexer.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let start_char_offset = self.current_char_offset();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_char_offset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/validation.rs:50:48
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Expression::BinaryOperator { left, op, right } => {
[INFO] [stdout]    |                                                ^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `array`
[INFO] [stdout]   --> src/validation.rs:60:39
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]    |                                       ^^^^^ help: try ignoring the field: `array: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/validation.rs:60:46
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Expression::ArrayAccess { array, index } => todo!(),
[INFO] [stdout]    |                                              ^^^^^ help: try ignoring the field: `index: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]   --> src/validation.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]    |                                      ^^^^ help: try ignoring the field: `from: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]   --> src/validation.rs:61:44
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Expression::ItemAccess { from, to } => todo!(),
[INFO] [stdout]    |                                            ^^ help: try ignoring the field: `to: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `left`
[INFO] [stdout]   --> src/validation.rs:62:34
[INFO] [stdout]    |
[INFO] [stdout] 62 |             Expression::Assign { left, right } => right.visit_by(self)?,
[INFO] [stdout]    |                                  ^^^^ help: try ignoring the field: `left: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/visitor.rs:79:33
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn visit_children_by(&self, visitor: &mut T) -> Result<(), E> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/visitor.rs:85:33
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn visit_children_by(&self, visitor: &mut T) -> Result<(), E> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]   --> src/visitor.rs:91:33
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn visit_children_by(&self, visitor: &mut T) -> Result<(), E> {
[INFO] [stdout]    |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `literals`
[INFO] [stdout]    --> src/ir.rs:178:5
[INFO] [stdout]     |
[INFO] [stdout] 178 |     literals: Vec<PrimitiveConstValue>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `index`
[INFO] [stdout]    --> src/ir.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 182 |     index: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `symbol_table`
[INFO] [stdout]  --> src/validation.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     symbol_table: SymbolTable,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `symbol_table`
[INFO] [stdout]   --> src/validation.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     symbol_table: &'a mut SymbolTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `visitor`
[INFO] [stdout]   --> src/visitor.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     visitor: T,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `literals`
[INFO] [stdout]    --> src/ir.rs:178:5
[INFO] [stdout]     |
[INFO] [stdout] 178 |     literals: Vec<PrimitiveConstValue>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `index`
[INFO] [stdout]    --> src/ir.rs:182:5
[INFO] [stdout]     |
[INFO] [stdout] 182 |     index: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `symbol_table`
[INFO] [stdout]  --> src/validation.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     symbol_table: SymbolTable,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `symbol_table`
[INFO] [stdout]   --> src/validation.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     symbol_table: &'a mut SymbolTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `visitor`
[INFO] [stdout]   --> src/visitor.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     visitor: T,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse`
[INFO] [stdout]   --> src/test/mod.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn parse(input: &str) -> Expression {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_parse_statement`
[INFO] [stdout]   --> src/test/mod.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn test_parse_statement(input: &str) -> Statement {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "055a425234dcd7c27a0239492416efba9cff6f88795434d080c8a307875c1200", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "055a425234dcd7c27a0239492416efba9cff6f88795434d080c8a307875c1200", kill_on_drop: false }`
[INFO] [stdout] 055a425234dcd7c27a0239492416efba9cff6f88795434d080c8a307875c1200