[INFO] cloning repository https://github.com/wvanlit/rust-monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wvanlit/rust-monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwvanlit%2Frust-monkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwvanlit%2Frust-monkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0d0d3c23c9d97fb45da7396cb0e96646da17965
[INFO] testing wvanlit/rust-monkey against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwvanlit%2Frust-monkey" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wvanlit/rust-monkey on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wvanlit/rust-monkey
[INFO] finished tweaking git repo https://github.com/wvanlit/rust-monkey
[INFO] tweaked toml for git repo https://github.com/wvanlit/rust-monkey written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/wvanlit/rust-monkey already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf96ca01a702e15dd7e4d57c18412b21e94f3fb548b1a74857a445c79fd24f93
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cf96ca01a702e15dd7e4d57c18412b21e94f3fb548b1a74857a445c79fd24f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf96ca01a702e15dd7e4d57c18412b21e94f3fb548b1a74857a445c79fd24f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf96ca01a702e15dd7e4d57c18412b21e94f3fb548b1a74857a445c79fd24f93", kill_on_drop: false }`
[INFO] [stdout] cf96ca01a702e15dd7e4d57c18412b21e94f3fb548b1a74857a445c79fd24f93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eabab4b0a6c4ebdd3eb41a2d5ea4042edad20533f1f12097dc7b41d6a8d62a60
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eabab4b0a6c4ebdd3eb41a2d5ea4042edad20533f1f12097dc7b41d6a8d62a60", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey_interpreter v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `program_to_string`
[INFO] [stdout]  --> src/parser/ast.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn program_to_string(program: &Program) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]   --> src/parser/ast.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `Command { std: "docker" "inspect" "eabab4b0a6c4ebdd3eb41a2d5ea4042edad20533f1f12097dc7b41d6a8d62a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eabab4b0a6c4ebdd3eb41a2d5ea4042edad20533f1f12097dc7b41d6a8d62a60", kill_on_drop: false }`
[INFO] [stdout] eabab4b0a6c4ebdd3eb41a2d5ea4042edad20533f1f12097dc7b41d6a8d62a60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9d059e92ba77a55931d9292fbf022b1154397263d65e04719ddd96d65f9b087
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c9d059e92ba77a55931d9292fbf022b1154397263d65e04719ddd96d65f9b087", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey_interpreter v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]   --> src/parser/ast.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `Command { std: "docker" "inspect" "c9d059e92ba77a55931d9292fbf022b1154397263d65e04719ddd96d65f9b087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9d059e92ba77a55931d9292fbf022b1154397263d65e04719ddd96d65f9b087", kill_on_drop: false }`
[INFO] [stdout] c9d059e92ba77a55931d9292fbf022b1154397263d65e04719ddd96d65f9b087
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b77b2e43ec7881e54d4cba8a569432a1c0eebc8661be5b777f4dedf128662ad
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0b77b2e43ec7881e54d4cba8a569432a1c0eebc8661be5b777f4dedf128662ad", kill_on_drop: false }`
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]   --> src/parser/ast.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     None,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `monkey_interpreter` (bin "monkey_interpreter" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/monkey_interpreter-b678a23098a0c7b4)
[INFO] [stdout] 
[INFO] [stdout] running 42 tests
[INFO] [stdout] test evaluate::evaluate::tests::test_error_handling ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_eval_conditional_expression ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_return_expression ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_let_statement ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_function_object ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_builtin_functions ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_string_literal_concat ... ok
[INFO] [stdout] test lexer::lexer::tests::equals_not_equals ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_eval_integer_expression ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_eval_boolean_expression ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_function_call ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_array_index ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_array_literal ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_hash_literal ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_string_literal ... ok
[INFO] [stdout] test lexer::lexer::tests::extended_tokens ... ok
[INFO] [stdout] test evaluate::evaluate::tests::test_hash_index ... ok
[INFO] [stdout] test lexer::lexer::tests::number_parsing ... ok
[INFO] [stdout] test lexer::lexer::tests::simple_code ... ok
[INFO] [stdout] test lexer::lexer::tests::if_else_tokens ... ok
[INFO] [stdout] test parser::parser::tests::test_call_expresion_parsing ... ok
[INFO] [stdout] test parser::parser::tests::test_hash_literal_parsing_string_keys ... ok
[INFO] [stdout] test parser::parser::tests::test_if_else_expression ... ok
[INFO] [stdout] test lexer::lexer::tests::next_token ... ok
[INFO] [stdout] test parser::parser::tests::test_if_expression ... ok
[INFO] [stdout] test lexer::lexer::tests::test_brackets ... ok
[INFO] [stdout] test parser::parser::tests::test_integer_expression ... ok
[INFO] [stdout] test parser::parser::tests::test_string_literal_expression ... ok
[INFO] [stdout] test parser::parser::tests::test_return_statement ... ok
[INFO] [stdout] test lexer::lexer::tests::test_hash ... ok
[INFO] [stdout] test parser::parser::tests::test_parsing_prefix_expressions ... ok
[INFO] [stdout] test parser::parser::tests::test_operator_precedence ... ok
[INFO] [stdout] test parser::parser::tests::test_parsing_infix_expressions ... ok
[INFO] [stdout] test parser::parser::tests::test_array_index_parsing ... ok
[INFO] [stdout] test parser::parser::tests::test_let_statement ... ok
[INFO] [stdout] test parser::parser::tests::test_identifier_expression ... ok
[INFO] [stdout] test parser::parser::tests::test_boolean_expression ... ok
[INFO] [stdout] test parser::parser::tests::test_let_statement_expressions ... ok
[INFO] [stdout] test lexer::lexer::tests::test_strings ... ok
[INFO] [stdout] test parser::parser::tests::test_function_literal_parsing ... ok
[INFO] [stdout] test parser::parser::tests::test_hash_literal_parsing_empty ... ok
[INFO] [stdout] test parser::parser::tests::test_array_literal_parsing ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 42 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b77b2e43ec7881e54d4cba8a569432a1c0eebc8661be5b777f4dedf128662ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b77b2e43ec7881e54d4cba8a569432a1c0eebc8661be5b777f4dedf128662ad", kill_on_drop: false }`
[INFO] [stdout] 0b77b2e43ec7881e54d4cba8a569432a1c0eebc8661be5b777f4dedf128662ad