[INFO] fetching crate mdl_monkey 1.0.0...
[INFO] testing mdl_monkey-1.0.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate mdl_monkey 1.0.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mdl_monkey 1.0.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdl_monkey 1.0.0
[INFO] finished tweaking crates.io crate mdl_monkey 1.0.0
[INFO] tweaked toml for crates.io crate mdl_monkey 1.0.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate mdl_monkey 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21fccf5a49bb38ecf965cf689c67bb976b6a2f0ce8079f5fc8bdd7723fddacc9
[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" "21fccf5a49bb38ecf965cf689c67bb976b6a2f0ce8079f5fc8bdd7723fddacc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21fccf5a49bb38ecf965cf689c67bb976b6a2f0ce8079f5fc8bdd7723fddacc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21fccf5a49bb38ecf965cf689c67bb976b6a2f0ce8079f5fc8bdd7723fddacc9", kill_on_drop: false }`
[INFO] [stdout] 21fccf5a49bb38ecf965cf689c67bb976b6a2f0ce8079f5fc8bdd7723fddacc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ab6bf59e4f1bdd410450c2bde17836391f13f0267029d5cc31330ab7bd5d1ee
[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" "8ab6bf59e4f1bdd410450c2bde17836391f13f0267029d5cc31330ab7bd5d1ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling mdl_monkey v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.72s
[INFO] running `Command { std: "docker" "inspect" "8ab6bf59e4f1bdd410450c2bde17836391f13f0267029d5cc31330ab7bd5d1ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab6bf59e4f1bdd410450c2bde17836391f13f0267029d5cc31330ab7bd5d1ee", kill_on_drop: false }`
[INFO] [stdout] 8ab6bf59e4f1bdd410450c2bde17836391f13f0267029d5cc31330ab7bd5d1ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--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] cc99594aa4b13556d5a0afd26da2fe25903724954e535bc47881fdca51366ea2
[INFO] running `Command { std: "docker" "start" "-a" "cc99594aa4b13556d5a0afd26da2fe25903724954e535bc47881fdca51366ea2", kill_on_drop: false }`
[INFO] [stderr]    Compiling mdl_monkey v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/evaluator.rs:289:57
[INFO] [stdout]     |
[INFO] [stdout] 289 |     .expect_err("expected an error but none was found");;
[INFO] [stdout]     |                                                         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` 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 5.57s
[INFO] running `Command { std: "docker" "inspect" "cc99594aa4b13556d5a0afd26da2fe25903724954e535bc47881fdca51366ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc99594aa4b13556d5a0afd26da2fe25903724954e535bc47881fdca51366ea2", kill_on_drop: false }`
[INFO] [stdout] cc99594aa4b13556d5a0afd26da2fe25903724954e535bc47881fdca51366ea2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8e31408089faff4d4237488142ecdf49d7608dcf183e99ce1062e17968c542eb
[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" "8e31408089faff4d4237488142ecdf49d7608dcf183e99ce1062e17968c542eb", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> tests/evaluator.rs:289:57
[INFO] [stderr]     |
[INFO] [stderr] 289 |     .expect_err("expected an error but none was found");;
[INFO] [stderr]     |                                                         ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mdl_monkey` (test "evaluator") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mdl_monkey-0d77edaadc781498)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/monkey-dc398bec1a4352a5)
[INFO] [stderr]      Running tests/ast.rs (/opt/rustwide/target/debug/deps/ast-6f46fdeaa4c121d7)
[INFO] [stderr]      Running tests/evaluator.rs (/opt/rustwide/target/debug/deps/evaluator-b4fca05fefa26eb6)
[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] [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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test ast_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test evaluate_array_object ... ok
[INFO] [stdout] test evaluate_builtin_len_errors ... ok
[INFO] [stdout] test evaluate_builtin_push ... ok
[INFO] [stdout] test evaluate_builtin_push_errors ... ok
[INFO] [stdout] test evaluate_builtin_rest ... ok
[INFO] [stdout] test evaluate_builtin_rest_errors ... ok
[INFO] [stdout] test evaluate_float_expression ... ok
[INFO] [stdout] test evaluate_builtin_last_errors ... ok
[INFO] [stdout] test evaluate_builtin_last ... ok
[INFO] [stdout] test evaluate_builtin_first_errors ... ok
[INFO] [stdout] test evaluate_function_object ... ok
[INFO] [stdout] test evaluate_hash_index_objects ... ok
[INFO] [stdout] test evaluate_let_statement_unknown_identifier ... ok
[INFO] [stdout] test evaluate_prefix_expression ... ok
[INFO] [stdout] test evaluate_string_expression ... ok
[INFO] [stdout] test evaluate_let_statement ... ok
[INFO] [stdout] test evaluate_return_statement ... ok
[INFO] [stdout] test evaluate_builtin_first ... ok
[INFO] [stdout] test evaluate_index_objects_errors ... ok
[INFO] [stdout] test evaluate_if_expression ... ok
[INFO] [stdout] test evaluate_hash_objects ... ok
[INFO] [stdout] test evaluate_boolean_expression ... ok
[INFO] [stdout] test evaluate_array_index_objects ... ok
[INFO] [stdout] test evaluate_integer_expression ... ok
[INFO] [stdout] test evaluate_builtin_len ... ok
[INFO] [stdout] test evaluate_function_application ... ok
[INFO] [stdout] test evaluate_function_application_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lexer.rs (/opt/rustwide/target/debug/deps/lexer-5a0d7c78a5b8867a)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test lex_illegal_number_radix ... ok
[INFO] [stdout] test lex_integer_literals ... ok
[INFO] [stdout] test lex_string_unexpected_eof ... ok
[INFO] [stdout] test lex_illegal_number ... ok
[INFO] [stderr]      Running tests/parser.rs (/opt/rustwide/target/debug/deps/parser-aeaf6e0bbbc65598)
[INFO] [stdout] test lex_next_token ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test parse_float_literal_expression ... ok
[INFO] [stdout] test parse_function_literals ... ok
[INFO] [stdout] test parse_call_expressions ... ok
[INFO] [stdout] test parse_prefix_integer_expressions ... ok
[INFO] [stdout] test parse_string_expression ... ok
[INFO] [stdout] test parse_prefix_boolean_expressions ... ok
[INFO] [stdout] test parse_infix_integer_expressions ... ok
[INFO] [stdout] test parse_array_literal ... ok
[INFO] [stderr]      Running tests/token.rs (/opt/rustwide/target/debug/deps/token-b9e4f48bf0363e11)
[INFO] [stdout] test parse_integer_literal_expression ... ok
[INFO] [stdout] test parse_infix_boolean_expressions ... ok
[INFO] [stdout] test parse_identifier_expression ... ok
[INFO] [stdout] test parse_if_expressions ... ok
[INFO] [stdout] test parse_statements ... ok
[INFO] [stdout] test parse_operator_precedence ... ok
[INFO] [stdout] test parse_hash_expressions ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests mdl_monkey
[INFO] [stdout] test token_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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" "8e31408089faff4d4237488142ecdf49d7608dcf183e99ce1062e17968c542eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e31408089faff4d4237488142ecdf49d7608dcf183e99ce1062e17968c542eb", kill_on_drop: false }`
[INFO] [stdout] 8e31408089faff4d4237488142ecdf49d7608dcf183e99ce1062e17968c542eb