[INFO] cloning repository https://github.com/wangbyby/ai-language-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wangbyby/ai-language-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangbyby%2Fai-language-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangbyby%2Fai-language-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f6e3005d6dd85e5845dd967e4153200a7782f01
[INFO] checking wangbyby/ai-language-demo against try#f70ee28831acc074c109afab32d287057c3eca46 for pr-149389
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangbyby%2Fai-language-demo" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wangbyby/ai-language-demo
[INFO] finished tweaking git repo https://github.com/wangbyby/ai-language-demo
[INFO] tweaked toml for git repo https://github.com/wangbyby/ai-language-demo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wangbyby/ai-language-demo on toolchain f70ee28831acc074c109afab32d287057c3eca46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wangbyby/ai-language-demo 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" "+f70ee28831acc074c109afab32d287057c3eca46" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking wangbyby/ai-language-demo against try#f70ee28831acc074c109afab32d287057c3eca46 for pr-149389
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangbyby%2Fai-language-demo" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wangbyby/ai-language-demo
[INFO] finished tweaking git repo https://github.com/wangbyby/ai-language-demo
[INFO] tweaked toml for git repo https://github.com/wangbyby/ai-language-demo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wangbyby/ai-language-demo on toolchain f70ee28831acc074c109afab32d287057c3eca46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wangbyby/ai-language-demo 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" "+f70ee28831acc074c109afab32d287057c3eca46" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce68227a89f437fbdedacff06d89c1d92789527318e67270e155b241f42633b0
[INFO] running `Command { std: "docker" "start" "-a" "ce68227a89f437fbdedacff06d89c1d92789527318e67270e155b241f42633b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce68227a89f437fbdedacff06d89c1d92789527318e67270e155b241f42633b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce68227a89f437fbdedacff06d89c1d92789527318e67270e155b241f42633b0", kill_on_drop: false }`
[INFO] [stdout] ce68227a89f437fbdedacff06d89c1d92789527318e67270e155b241f42633b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fff767fb75a087c9c2fda726ed0b2c39a6b824836e04ed90c01a7e227edb1322
[INFO] running `Command { std: "docker" "start" "-a" "fff767fb75a087c9c2fda726ed0b2c39a6b824836e04ed90c01a7e227edb1322", kill_on_drop: false }`
[INFO] [stderr]     Checking test_lang_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/parser/ast.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::Token`
[INFO] [stdout]  --> src/semantic/variable_validator.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::Token`
[INFO] [stdout]  --> src/semantic/function_validator.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::environment::Environment`
[INFO] [stdout]  --> src/semantic/function_validator.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::environment::Environment;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::VariableInfo`
[INFO] [stdout]  --> src/semantic/function_validator.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::VariableInfo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/semantic/generic_instantiator.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::{Token, TokenType, LiteralValue};
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AstDump`
[INFO] [stdout]   --> src/semantic/mod.rs:10:66
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::parser::ast::{Expression, Parameter, Statement, Type, AstDump};
[INFO] [stdout]    |                                                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/semantic/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/parser/ast.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]   --> src/semantic/visitor.rs:84:24
[INFO] [stdout]    |
[INFO] [stdout] 84 |     use crate::lexer::{TokenType, LiteralValue};
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::Token`
[INFO] [stdout]  --> src/semantic/variable_validator.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::Token`
[INFO] [stdout]  --> src/semantic/function_validator.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::environment::Environment`
[INFO] [stdout]  --> src/semantic/function_validator.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::environment::Environment;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::VariableInfo`
[INFO] [stdout]  --> src/semantic/function_validator.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::VariableInfo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/semantic/generic_instantiator.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::{Token, TokenType, LiteralValue};
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AstDump`
[INFO] [stdout]   --> src/semantic/mod.rs:10:66
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::parser::ast::{Expression, Parameter, Statement, Type, AstDump};
[INFO] [stdout]    |                                                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> src/semantic/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::collections::HashMap;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LiteralValue` and `TokenType`
[INFO] [stdout]    --> src/semantic/mod.rs:297:31
[INFO] [stdout]     |
[INFO] [stdout] 297 |     use crate::lexer::{Lexer, LiteralValue, TokenType};
[INFO] [stdout]     |                               ^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/semantic/function_validator.rs:285:31
[INFO] [stdout]     |
[INFO] [stdout] 285 |                         (Some(expr), expected_type) => {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/semantic/generic_instantiator.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         line: usize,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `type_params`
[INFO] [stdout]    --> src/semantic/generic_instantiator.rs:333:9
[INFO] [stdout]     |
[INFO] [stdout] 333 |         type_params: &[String],
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_params`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `type_params`
[INFO] [stdout]     --> src/semantic/mod.rs:1387:9
[INFO] [stdout]      |
[INFO] [stdout] 1387 |         type_params: &[String],
[INFO] [stdout]      |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_params`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_error` is never used
[INFO] [stdout]    --> src/semantic/generic_instantiator.rs:640:8
[INFO] [stdout]     |
[INFO] [stdout]  26 | impl GenericInstantiator {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 640 |     fn add_error(&mut self, message: String, line: 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: unused variable: `expr`
[INFO] [stdout]    --> src/semantic/function_validator.rs:285:31
[INFO] [stdout]     |
[INFO] [stdout] 285 |                         (Some(expr), expected_type) => {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/semantic/generic_instantiator.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |         line: usize,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `type_params`
[INFO] [stdout]    --> src/semantic/generic_instantiator.rs:333:9
[INFO] [stdout]     |
[INFO] [stdout] 333 |         type_params: &[String],
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_params`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `type_params`
[INFO] [stdout]     --> src/semantic/mod.rs:1387:9
[INFO] [stdout]      |
[INFO] [stdout] 1387 |         type_params: &[String],
[INFO] [stdout]      |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_type_params`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_error` is never used
[INFO] [stdout]    --> src/semantic/generic_instantiator.rs:640:8
[INFO] [stdout]     |
[INFO] [stdout]  26 | impl GenericInstantiator {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 640 |     fn add_error(&mut self, message: String, line: usize) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "fff767fb75a087c9c2fda726ed0b2c39a6b824836e04ed90c01a7e227edb1322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff767fb75a087c9c2fda726ed0b2c39a6b824836e04ed90c01a7e227edb1322", kill_on_drop: false }`
[INFO] [stdout] fff767fb75a087c9c2fda726ed0b2c39a6b824836e04ed90c01a7e227edb1322
