[INFO] updating cached repository yukihir0/rs_monkey
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yukihir0/rs_monkey
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yukihir0/rs_monkey" "work/ex/beta-1.38-1/sources/1.37.0/gh/yukihir0/rs_monkey"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yukihir0/rs_monkey'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yukihir0/rs_monkey" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yukihir0/rs_monkey"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yukihir0/rs_monkey'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b0cfaa6c5ad7c1ffe611cee5a5289f4d6dd582db
[INFO] sha for GitHub repo yukihir0/rs_monkey: b0cfaa6c5ad7c1ffe611cee5a5289f4d6dd582db
[INFO] validating manifest of yukihir0/rs_monkey on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yukihir0/rs_monkey on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yukihir0/rs_monkey
[INFO] finished frobbing yukihir0/rs_monkey
[INFO] frobbed toml for yukihir0/rs_monkey written to work/ex/beta-1.38-1/sources/1.37.0/gh/yukihir0/rs_monkey/Cargo.toml
[INFO] started frobbing yukihir0/rs_monkey
[INFO] finished frobbing yukihir0/rs_monkey
[INFO] frobbed toml for yukihir0/rs_monkey written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yukihir0/rs_monkey/Cargo.toml
[INFO] crate yukihir0/rs_monkey already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yukihir0/rs_monkey against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yukihir0/rs_monkey:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f16d67a18e471534b23d3040f69725dcf1e7cf018a7a1b2a804f87da88537f85
[INFO] running `"docker" "start" "-a" "f16d67a18e471534b23d3040f69725dcf1e7cf018a7a1b2a804f87da88537f85"`
[INFO] [stderr]    Compiling rs_monkey v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/environment.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.92s
[INFO] running `"docker" "inspect" "f16d67a18e471534b23d3040f69725dcf1e7cf018a7a1b2a804f87da88537f85"`
[INFO] running `"docker" "rm" "-f" "f16d67a18e471534b23d3040f69725dcf1e7cf018a7a1b2a804f87da88537f85"`
[INFO] [stdout] f16d67a18e471534b23d3040f69725dcf1e7cf018a7a1b2a804f87da88537f85
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yukihir0/rs_monkey:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9553e1d8ec99fe576ddb5d04e9f8fe865132401523d0687eae18c00f18df666b
[INFO] running `"docker" "start" "-a" "9553e1d8ec99fe576ddb5d04e9f8fe865132401523d0687eae18c00f18df666b"`
[INFO] [stderr]    Compiling rs_monkey v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/environment.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.59s
[INFO] running `"docker" "inspect" "9553e1d8ec99fe576ddb5d04e9f8fe865132401523d0687eae18c00f18df666b"`
[INFO] running `"docker" "rm" "-f" "9553e1d8ec99fe576ddb5d04e9f8fe865132401523d0687eae18c00f18df666b"`
[INFO] [stdout] 9553e1d8ec99fe576ddb5d04e9f8fe865132401523d0687eae18c00f18df666b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yukihir0/rs_monkey:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 4aba007d438567b8cd2e12b7e67829c9dea63411d16a540b7b91c2ed44d3b74a
[INFO] running `"docker" "start" "-a" "4aba007d438567b8cd2e12b7e67829c9dea63411d16a540b7b91c2ed44d3b74a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rs_monkey-be69c36a04bdf45e
[INFO] [stdout] running 35 tests
[INFO] [stdout] test evaluator::tests::test_function_application ... ok
[INFO] [stdout] test evaluator::tests::test_error_handling ... ok
[INFO] [stdout] test evaluator::tests::test_closures ... ok
[INFO] [stdout] test evaluator::tests::test_builtin_functions ... ok
[INFO] [stdout] test evaluator::tests::test_bang_operator ... ok
[INFO] [stdout] test evaluator::tests::test_hash_index_expr ... ok
[INFO] [stdout] test evaluator::tests::test_hash_literal ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rs_monkey-019e6edefda67355
[INFO] [stdout] test evaluator::tests::test_function_object ... ok
[INFO] [stdout] test evaluator::tests::test_boolean_expression ... ok
[INFO] [stdout] test evaluator::tests::test_array_literal ... ok
[INFO] [stdout] test evaluator::tests::test_integer_expression ... ok
[INFO] [stdout] test evaluator::tests::test_array_index_expression ... ok
[INFO] [stdout] test evaluator::tests::test_if_else_expression ... ok
[INFO] [stdout] test evaluator::tests::test_string_concatenation ... ok
[INFO] [stdout] test evaluator::tests::test_string_expression ... ok
[INFO] [stdout] test evaluator::tests::test_return_statement ... ok
[INFO] [stdout] test lexer::tests::next_token_test ... ok
[INFO] [stdout] test parser::tests::test_boolean_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_call_expression ... ok
[INFO] [stdout] test parser::tests::test_array_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_func_expression ... ok
[INFO] [stdout] test parser::tests::test_func_params ... ok
[INFO] [stdout] test evaluator::tests::test_let_statement ... ok
[INFO] [stdout] test parser::tests::test_if_else_expression ... ok
[INFO] [stdout] test parser::tests::test_if_expression ... ok
[INFO] [stdout] test parser::tests::test_index_expression ... ok
[INFO] [stdout] test parser::tests::test_infix_expression ... ok
[INFO] [stdout] test parser::tests::test_integer_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_identifier_expression ... ok
[INFO] [stdout] test parser::tests::test_let_statement ... ok
[INFO] [stdout] test parser::tests::test_hash_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_operator_precedence_parsing ... ok
[INFO] [stdout] test parser::tests::test_prefix_expression ... ok
[INFO] [stdout] test parser::tests::test_return_statement ... ok
[INFO] [stdout] test parser::tests::test_string_literal_expression ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 35 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stdout] test evaluator::tests::test_array_index_expression ... ok
[INFO] [stdout] test evaluator::tests::test_error_handling ... ok
[INFO] [stdout] test evaluator::tests::test_closures ... ok
[INFO] [stdout] test evaluator::tests::test_builtin_functions ... ok
[INFO] [stdout] test evaluator::tests::test_hash_index_expr ... ok
[INFO] [stdout] test evaluator::tests::test_function_object ... ok
[INFO] [stdout] test evaluator::tests::test_hash_literal ... ok
[INFO] [stdout] test evaluator::tests::test_function_application ... ok
[INFO] [stdout] test evaluator::tests::test_integer_expression ... ok
[INFO] [stdout] test evaluator::tests::test_let_statement ... ok
[INFO] [stdout] test evaluator::tests::test_return_statement ... ok
[INFO] [stdout] test evaluator::tests::test_if_else_expression ... ok
[INFO] [stdout] test evaluator::tests::test_string_expression ... ok
[INFO] [stdout] test evaluator::tests::test_string_concatenation ... ok
[INFO] [stdout] test lexer::tests::next_token_test ... ok
[INFO] [stdout] test parser::tests::test_array_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_boolean_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_call_expression ... ok
[INFO] [stdout] test parser::tests::test_func_expression ... ok
[INFO] [stdout] test parser::tests::test_func_params ... ok
[INFO] [stdout] test parser::tests::test_hash_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_identifier_expression ... ok
[INFO] [stdout] test parser::tests::test_if_else_expression ... ok
[INFO] [stdout] test parser::tests::test_if_expression ... ok
[INFO] [stdout] test parser::tests::test_index_expression ... ok
[INFO] [stdout] test evaluator::tests::test_boolean_expression ... ok
[INFO] [stdout] test evaluator::tests::test_array_literal ... ok
[INFO] [stdout] test evaluator::tests::test_bang_operator ... ok
[INFO] [stdout] test parser::tests::test_integer_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_return_statement ... ok
[INFO] [stdout] test parser::tests::test_string_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_prefix_expression ... ok
[INFO] [stderr]    Doc-tests rs_monkey
[INFO] [stdout] test parser::tests::test_infix_expression ... ok
[INFO] [stdout] test parser::tests::test_let_statement ... ok
[INFO] [stdout] test parser::tests::test_operator_precedence_parsing ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 35 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4aba007d438567b8cd2e12b7e67829c9dea63411d16a540b7b91c2ed44d3b74a"`
[INFO] running `"docker" "rm" "-f" "4aba007d438567b8cd2e12b7e67829c9dea63411d16a540b7b91c2ed44d3b74a"`
[INFO] [stdout] 4aba007d438567b8cd2e12b7e67829c9dea63411d16a540b7b91c2ed44d3b74a