[INFO] cloning repository https://github.com/ZachClayburn/CompilerDesign-Project2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZachClayburn/CompilerDesign-Project2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZachClayburn%2FCompilerDesign-Project2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZachClayburn%2FCompilerDesign-Project2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5943c0f008f9695a7b1a6e1c7771fe29319b8d5
[INFO] testing ZachClayburn/CompilerDesign-Project2 against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZachClayburn%2FCompilerDesign-Project2" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZachClayburn/CompilerDesign-Project2 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZachClayburn/CompilerDesign-Project2
[INFO] finished tweaking git repo https://github.com/ZachClayburn/CompilerDesign-Project2
[INFO] tweaked toml for git repo https://github.com/ZachClayburn/CompilerDesign-Project2 written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/ZachClayburn/CompilerDesign-Project2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4004fa36899e2f1a9955ab22fc947e450525f677ae79ac6261d21bf148a7710
[INFO] running `Command { std: "docker" "start" "-a" "c4004fa36899e2f1a9955ab22fc947e450525f677ae79ac6261d21bf148a7710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4004fa36899e2f1a9955ab22fc947e450525f677ae79ac6261d21bf148a7710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4004fa36899e2f1a9955ab22fc947e450525f677ae79ac6261d21bf148a7710", kill_on_drop: false }`
[INFO] [stdout] c4004fa36899e2f1a9955ab22fc947e450525f677ae79ac6261d21bf148a7710
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0b1513313719b89085b24302451e2484cfa5b1bd26e86f6287780bef74c1a95
[INFO] running `Command { std: "docker" "start" "-a" "f0b1513313719b89085b24302451e2484cfa5b1bd26e86f6287780bef74c1a95", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling peeking_take_while v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling os_str_bytes v4.2.0
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling simple_logger v1.13.0
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.5
[INFO] [stderr]    Compiling clap v3.0.0-beta.5
[INFO] [stderr]    Compiling compiler_design v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `CodeGenError`
[INFO] [stdout]  --> src/codegen/symbol_table.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{CodeGenError, Result};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `return_type`
[INFO] [stdout]  --> src/evaluation/symbol_table.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub return_type: ProcedureType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.79s
[INFO] running `Command { std: "docker" "inspect" "f0b1513313719b89085b24302451e2484cfa5b1bd26e86f6287780bef74c1a95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0b1513313719b89085b24302451e2484cfa5b1bd26e86f6287780bef74c1a95", kill_on_drop: false }`
[INFO] [stdout] f0b1513313719b89085b24302451e2484cfa5b1bd26e86f6287780bef74c1a95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64e48dfe87b44073ab3c53e8c2db1e524935b8a0f6da1f86a4f106464ab40004
[INFO] running `Command { std: "docker" "start" "-a" "64e48dfe87b44073ab3c53e8c2db1e524935b8a0f6da1f86a4f106464ab40004", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stdout] warning: unused import: `CodeGenError`
[INFO] [stdout]  --> src/codegen/symbol_table.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{CodeGenError, Result};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `return_type`
[INFO] [stdout]  --> src/evaluation/symbol_table.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub return_type: ProcedureType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pretty_assertions v1.0.0
[INFO] [stderr]    Compiling compiler_design v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `CodeGenError`
[INFO] [stdout]  --> src/codegen/symbol_table.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{CodeGenError, Result};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `return_type`
[INFO] [stdout]  --> src/evaluation/symbol_table.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub return_type: ProcedureType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.02s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/compiler_design-546bd50e141fed2c)
[INFO] [stderr]   Executable unittests bin/project_2.rs (/opt/rustwide/target/debug/deps/project_2-971008d1ca92c643)
[INFO] running `Command { std: "docker" "inspect" "64e48dfe87b44073ab3c53e8c2db1e524935b8a0f6da1f86a4f106464ab40004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64e48dfe87b44073ab3c53e8c2db1e524935b8a0f6da1f86a4f106464ab40004", kill_on_drop: false }`
[INFO] [stdout] 64e48dfe87b44073ab3c53e8c2db1e524935b8a0f6da1f86a4f106464ab40004
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 38e1d0eb03bfb45801ce87247d0c74563b05062a2e14086bc97f6008e6b0ed85
[INFO] running `Command { std: "docker" "start" "-a" "38e1d0eb03bfb45801ce87247d0c74563b05062a2e14086bc97f6008e6b0ed85", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `CodeGenError`
[INFO] [stdout] running 76 tests
[INFO] [stderr]  --> src/codegen/symbol_table.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{CodeGenError, Result};
[INFO] [stderr]   |             ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `return_type`
[INFO] [stderr]  --> src/evaluation/symbol_table.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub return_type: ProcedureType,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `compiler_design` (lib) generated 2 warnings
[INFO] [stderr] warning: `compiler_design` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/compiler_design-546bd50e141fed2c)
[INFO] [stdout] test codegen::test::empty_program_generates_correctly ... ok
[INFO] [stdout] test codegen::test::program_can_print_string ... ok
[INFO] [stdout] test codegen::test::programs_can_have_constant_integers ... ok
[INFO] [stdout] test codegen::test::flatten_lines_works ... ok
[INFO] [stdout] test codegen::test::programs_can_print_nums ... ok
[INFO] [stdout] test codegen::test::programs_can_read_nums ... ok
[INFO] [stdout] test evaluation::test::can_evaluate_simple_procedures ... ok
[INFO] [stdout] test evaluation::test::negatives_can_be_evaluated ... ok
[INFO] [stdout] test parser::table::test::can_replicate_books_lookup_table ... ok
[INFO] [stdout] test parser::table::test::can_replicate_books_first_set ... ok
[INFO] [stdout] test parser::test::literal_division_by_zero_does_not_panic ... ok
[INFO] [stdout] test evaluation::test::variables_can_be_evaluated ... ok
[INFO] [stdout] test evaluation::test::can_evaluate_procedures_with_params ... ok
[INFO] [stdout] test parser::test::negative_numbers_parse_correctly ... ok
[INFO] [stdout] test parser::test::operation_chain_with_parenthasese_does_not_error ... ok
[INFO] [stdout] test parser::test::minus_adjacent_to_plus_fails ... ok
[INFO] [stdout] test evaluation::test::nested_expressions_can_be_evaluated ... ok
[INFO] [stdout] test parser::test::integer_exponents_parse_correctly ... ok
[INFO] [stdout] test parser::test::expressions_format_correctly ... ok
[INFO] [stdout] test evaluation::test::simple_int_math_statements_can_be_evaluated ... ok
[INFO] [stdout] test parser::test::parenthetical_number_does_not_error ... ok
[INFO] [stdout] test parser::test::minus_adjacent_to_another_minus_fails ... ok
[INFO] [stdout] test parser::table::test::can_replicate_books_follow_set ... ok
[INFO] [stdout] test parser::test::parse_errors_on_bad_first_character ... ok
[INFO] [stdout] test parser::test::negative_variables_parse_correctly ... ok
[INFO] [stdout] test parser::test::procedure_call_with_one_arg_parses_correctly ... ok
[INFO] [stdout] test parser::test::procedure_call_with_many_args_parses_correctly ... ok
[INFO] [stdout] test parser::test::operation_chain_parses_correctly ... ok
[INFO] [stdout] test parser::test::reads_and_prints_parse_correctly ... ok
[INFO] [stdout] test parser::test::procedure_with_no_params_parses_correctly ... ok
[INFO] [stdout] test parser::test::assignment_expression_parses_correctly ... ok
[INFO] [stdout] test parser::test::procedure_call_with_no_args_parses_correctly ... ok
[INFO] [stdout] test parser::test::single_addition_parses_correctly ... ok
[INFO] [stdout] test parser::test::operation_chain_does_not_error ... ok
[INFO] [stdout] test parser::test::program_with_statements_parses_correctly ... ok
[INFO] [stdout] test parser::test::floating_point_assignments_can_parse_correctly ... ok
[INFO] [stdout] test parser::test::single_division_parses_correctly ... ok
[INFO] [stdout] test parser::test::negative_floating_point_numbers_parse_correctly ... ok
[INFO] [stdout] test parser::test::single_number_parses_correctly ... ok
[INFO] [stdout] test parser::test::trailing_operator_errors ... ok
[INFO] [stdout] test parser::test::fails_when_number_is_too_large ... ok
[INFO] [stdout] test parser::test::trailing_comment_doesnt_cause_failure ... ok
[INFO] [stdout] test scanner::tests::can_lex_identifyers ... ok
[INFO] [stdout] test scanner::tests::can_lex_keywords ... ok
[INFO] [stdout] test scanner::tests::can_lex_line_comments ... ok
[INFO] [stdout] test scanner::tests::can_lex_block_comments ... ok
[INFO] [stdout] test scanner::tests::can_lex_numbers ... ok
[INFO] [stdout] test parser::test::single_operation_does_not_error ... ok
[INFO] [stdout] test scanner::tests::can_create_scanner_from_text ... ok
[INFO] [stdout] test scanner::tests::can_lex_one_or_two_character_tokens ... ok
[INFO] [stdout] test scanner::tests::can_skip_whitespace ... ok
[INFO] [stdout] test scanner::tests::can_lex_strings ... ok
[INFO] [stdout] test scanner::tests::correctly_handles_eof_with_trailing_comment ... ok
[INFO] [stdout] test scanner::tests::creating_a_scanner_from_an_existing_file_works ... ok
[INFO] [stdout] test scanner::tests::creating_a_scanner_from_non_existing_file_fails ... ok
[INFO] [stdout] test scanner::tests::float_with_trailing_illegal_char_rejected ... ok
[INFO] [stdout] test parser::test::single_variable_parses_correctly ... ok
[INFO] [stdout] test scanner::tests::plus_minus_is_rejected ... ok
[INFO] [stdout] test parser::test::float_exponents_parse_correctly ... ok
[INFO] [stdout] test scanner::tokens::test::token_location_formats_correctly ... ok
[INFO] [stdout] test parser::test::single_number_does_not_error ... ok
[INFO] [stdout] test scanner::tests::can_parse_floating_point_numbers ... ok
[INFO] [stdout] test parser::test::single_float_parses_correctly ... ok
[INFO] [stdout] test parser::test::integer_power_overflow_fails_gracefully ... ok
[INFO] [stdout] test scanner::tests::can_lex_single_symbol_tokens ... ok
[INFO] [stdout] test scanner::tokens::test::tokens_format_correctly ... ok
[INFO] [stdout] test parser::test::single_exponent_parses_correctly ... ok
[INFO] [stdout] test parser::test::minimal_program_parses_correctly ... ok
[INFO] [stdout] test parser::test::single_subtraction_parses_correctly ... ok
[INFO] [stdout] test evaluation::test::simple_float_math_statements_can_be_evaluated ... ok
[INFO] [stdout] test parser::test::sequential_numbers_error ... ok
[INFO] [stdout] test parser::test::single_multiplication_parses_correctly ... ok
[INFO] [stdout] test parser::test::parsing_lone_comment_fails_gracefully ... ok
[INFO] [stdout] test parser::test::parenthetical_variable_parses_correctly ... ok
[INFO] [stdout] test parser::test::procedure_with_two_params_parses_correctly ... ok
[INFO] [stdout] test parser::test::procedures_can_parse_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 76 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests bin/project_2.rs (/opt/rustwide/target/debug/deps/project_2-971008d1ca92c643)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::invalid_examples_are_all_invalid ... ok
[INFO] [stdout] test test::valid_examples_are_all_valid ... ok
[INFO] [stderr]    Doc-tests compiler_design
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.90s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "38e1d0eb03bfb45801ce87247d0c74563b05062a2e14086bc97f6008e6b0ed85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38e1d0eb03bfb45801ce87247d0c74563b05062a2e14086bc97f6008e6b0ed85", kill_on_drop: false }`
[INFO] [stdout] 38e1d0eb03bfb45801ce87247d0c74563b05062a2e14086bc97f6008e6b0ed85