[INFO] fetching crate calc_engine 0.4.1...
[INFO] testing calc_engine-0.4.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate calc_engine 0.4.1 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate calc_engine 0.4.1 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 crates.io crate calc_engine 0.4.1
[INFO] finished tweaking crates.io crate calc_engine 0.4.1
[INFO] tweaked toml for crates.io crate calc_engine 0.4.1 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate crates.io crate calc_engine 0.4.1 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] [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-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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] b5573481d483c100ce7acd6c27893b57109dd63ce8b2855a7dba020258e7d5c0
[INFO] running `Command { std: "docker" "start" "-a" "b5573481d483c100ce7acd6c27893b57109dd63ce8b2855a7dba020258e7d5c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5573481d483c100ce7acd6c27893b57109dd63ce8b2855a7dba020258e7d5c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5573481d483c100ce7acd6c27893b57109dd63ce8b2855a7dba020258e7d5c0", kill_on_drop: false }`
[INFO] [stdout] b5573481d483c100ce7acd6c27893b57109dd63ce8b2855a7dba020258e7d5c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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] 2f3ebeb1e63b9cba8c706065981911abcc7062ce45f52a2d871c2e86966cc7af
[INFO] running `Command { std: "docker" "start" "-a" "2f3ebeb1e63b9cba8c706065981911abcc7062ce45f52a2d871c2e86966cc7af", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling auto_correct_n_suggest v0.2.0
[INFO] [stderr]    Compiling calc_engine v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "2f3ebeb1e63b9cba8c706065981911abcc7062ce45f52a2d871c2e86966cc7af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f3ebeb1e63b9cba8c706065981911abcc7062ce45f52a2d871c2e86966cc7af", kill_on_drop: false }`
[INFO] [stdout] 2f3ebeb1e63b9cba8c706065981911abcc7062ce45f52a2d871c2e86966cc7af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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] 7b2758c3d3fa6c43514fd00e656354eba5fbffb551d59542cb9bc5d243640870
[INFO] running `Command { std: "docker" "start" "-a" "7b2758c3d3fa6c43514fd00e656354eba5fbffb551d59542cb9bc5d243640870", 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] [stderr]    Compiling calc_engine v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.17s
[INFO] running `Command { std: "docker" "inspect" "7b2758c3d3fa6c43514fd00e656354eba5fbffb551d59542cb9bc5d243640870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b2758c3d3fa6c43514fd00e656354eba5fbffb551d59542cb9bc5d243640870", kill_on_drop: false }`
[INFO] [stdout] 7b2758c3d3fa6c43514fd00e656354eba5fbffb551d59542cb9bc5d243640870
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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] 6e3c114dd0135afbd1daf002697f212edd17482afa4739a35437bfd53e35079f
[INFO] running `Command { std: "docker" "start" "-a" "6e3c114dd0135afbd1daf002697f212edd17482afa4739a35437bfd53e35079f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/calc_engine-0c1b8e57d5a71f71)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stderr]    Doc-tests calc_engine
[INFO] [stdout] test parser::tests::test_can_parse_addition_expression ... ok
[INFO] [stdout] test parser::tests::test_can_parse_subtraction_expression ... ok
[INFO] [stdout] test parser::tests::test_detect_error_from_unclosed_grouped_expression ... ok
[INFO] [stdout] test scanner::tests::test_can_scan_addition_expression ... ok
[INFO] [stdout] test parser::tests::test_can_parse_grouped_expression ... ok
[INFO] [stdout] test scanner::tests::test_can_scan_with_keywords ... ok
[INFO] [stdout] test scanner::tests::test_scanner_can_auto_suggest_keyword ... ok
[INFO] [stdout] test scanner::tests::test_scanner_can_recognize_auto_capitalized_keywords ... ok
[INFO] [stdout] test tests::it_should_calculate_simple_addition ... ok
[INFO] [stdout] test tests::it_should_calculate_complex_math ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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" "6e3c114dd0135afbd1daf002697f212edd17482afa4739a35437bfd53e35079f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e3c114dd0135afbd1daf002697f212edd17482afa4739a35437bfd53e35079f", kill_on_drop: false }`
[INFO] [stdout] 6e3c114dd0135afbd1daf002697f212edd17482afa4739a35437bfd53e35079f