[INFO] cloning repository https://github.com/Lapz/tox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lapz/tox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLapz%2Ftox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLapz%2Ftox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c298ab5dc7534f4aa81cac69abf652bdfb39fbf
[INFO] testing Lapz/tox against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLapz%2Ftox" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lapz/tox 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/Lapz/tox
[INFO] finished tweaking git repo https://github.com/Lapz/tox
[INFO] tweaked toml for git repo https://github.com/Lapz/tox written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Lapz/tox 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] c08fd50ad6a689a642d7cf6f4f73cdbc7024326cf54d9d8e5bd5b17148b5f2dd
[INFO] running `Command { std: "docker" "start" "-a" "c08fd50ad6a689a642d7cf6f4f73cdbc7024326cf54d9d8e5bd5b17148b5f2dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c08fd50ad6a689a642d7cf6f4f73cdbc7024326cf54d9d8e5bd5b17148b5f2dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c08fd50ad6a689a642d7cf6f4f73cdbc7024326cf54d9d8e5bd5b17148b5f2dd", kill_on_drop: false }`
[INFO] [stdout] c08fd50ad6a689a642d7cf6f4f73cdbc7024326cf54d9d8e5bd5b17148b5f2dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b62d34dd7467c46ff9b45f3848c8a8a1ecccbc1a7aaad7f1e42d69156b6664c2
[INFO] running `Command { std: "docker" "start" "-a" "b62d34dd7467c46ff9b45f3848c8a8a1ecccbc1a7aaad7f1e42d69156b6664c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling itertools v0.7.9
[INFO] [stderr]    Compiling rand_xorshift v0.1.0
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling util v0.1.0 (/opt/rustwide/workdir/util)
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling opcode v0.1.0 (/opt/rustwide/workdir/opcode)
[INFO] [stderr]    Compiling syntax v0.1.0 (/opt/rustwide/workdir/syntax)
[INFO] [stderr]    Compiling structopt-derive v0.1.6
[INFO] [stderr]    Compiling vm v0.1.0 (/opt/rustwide/workdir/vm)
[INFO] [stderr]    Compiling structopt v0.1.7
[INFO] [stderr]    Compiling frontend v0.1.0 (/opt/rustwide/workdir/frontend)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> frontend/src/infer/function/expressions/call.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   };
[INFO] [stdout]    |                        ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> frontend/src/infer/function/expressions/call.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 | ...                   };
[INFO] [stdout]     |                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tox v0.2.0 (/opt/rustwide/workdir/tox)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.22s
[INFO] running `Command { std: "docker" "inspect" "b62d34dd7467c46ff9b45f3848c8a8a1ecccbc1a7aaad7f1e42d69156b6664c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b62d34dd7467c46ff9b45f3848c8a8a1ecccbc1a7aaad7f1e42d69156b6664c2", kill_on_drop: false }`
[INFO] [stdout] b62d34dd7467c46ff9b45f3848c8a8a1ecccbc1a7aaad7f1e42d69156b6664c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] a0697465c0895b37144579fef7be4164efba0e3d0fdfb5e1117621cea6aa13ed
[INFO] running `Command { std: "docker" "start" "-a" "a0697465c0895b37144579fef7be4164efba0e3d0fdfb5e1117621cea6aa13ed", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling difference v1.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling util v0.1.0 (/opt/rustwide/workdir/util)
[INFO] [stderr]    Compiling opcode v0.1.0 (/opt/rustwide/workdir/opcode)
[INFO] [stderr]    Compiling vm v0.1.0 (/opt/rustwide/workdir/vm)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> frontend/src/infer/function/expressions/call.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   };
[INFO] [stdout]    |                        ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> frontend/src/infer/function/expressions/call.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 | ...                   };
[INFO] [stdout]     |                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tempfile v3.0.5
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling pretty_assertions v0.4.1
[INFO] [stderr]    Compiling tox v0.2.0 (/opt/rustwide/workdir/tox)
[INFO] [stderr]    Compiling syntax v0.1.0 (/opt/rustwide/workdir/syntax)
[INFO] [stderr]    Compiling frontend v0.1.0 (/opt/rustwide/workdir/frontend)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> frontend/src/infer/function/expressions/call.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 | ...                   };
[INFO] [stdout]    |                        ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> frontend/src/infer/function/expressions/call.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 | ...                   };
[INFO] [stdout]     |                        ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "a0697465c0895b37144579fef7be4164efba0e3d0fdfb5e1117621cea6aa13ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0697465c0895b37144579fef7be4164efba0e3d0fdfb5e1117621cea6aa13ed", kill_on_drop: false }`
[INFO] [stdout] a0697465c0895b37144579fef7be4164efba0e3d0fdfb5e1117621cea6aa13ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b76b20003c22de9d62c1c20e41530b81249a58455601b0b7d6cbd7b3900e24fd
[INFO] running `Command { std: "docker" "start" "-a" "b76b20003c22de9d62c1c20e41530b81249a58455601b0b7d6cbd7b3900e24fd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> frontend/src/infer/function/expressions/call.rs:68:30
[INFO] [stderr]    |
[INFO] [stderr] 68 | ...                   };
[INFO] [stderr]    |                        ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> frontend/src/infer/function/expressions/call.rs:151:30
[INFO] [stderr]     |
[INFO] [stderr] 151 | ...                   };
[INFO] [stderr]     |                        ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: `frontend` (lib) generated 2 warnings
[INFO] [stderr] warning: `frontend` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/frontend-5c080db7227125dc)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/opcode-b61a3e604ad35b22)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/syntax-21b46cd543057a93)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tox-5df06c5c7594792f)
[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 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] [stderr]      Running ../tests/test_runner.rs (/opt/rustwide/target/debug/deps/test_runner-dec0b5c1ff83e34f)
[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] Pass:37 Fail:0
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/util-4df7ee279c9f721e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test symbol::test::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/vm-405fcb6482c02097)
[INFO] [stderr]    Doc-tests frontend
[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] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> /opt/rustwide/workdir/frontend/src/infer/function/expressions/call.rs:68:30
[INFO] [stderr]    |
[INFO] [stderr] 68 | ...                   };
[INFO] [stderr]    |                        ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> /opt/rustwide/workdir/frontend/src/infer/function/expressions/call.rs:151:30
[INFO] [stderr]     |
[INFO] [stderr] 151 | ...                   };
[INFO] [stderr]     |                        ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Doc-tests opcode
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/infer/types.rs - infer::types::Variant (line 41) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests syntax
[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] [stderr]    Doc-tests util
[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] [stderr]    Doc-tests vm
[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" "b76b20003c22de9d62c1c20e41530b81249a58455601b0b7d6cbd7b3900e24fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b76b20003c22de9d62c1c20e41530b81249a58455601b0b7d6cbd7b3900e24fd", kill_on_drop: false }`
[INFO] [stdout] b76b20003c22de9d62c1c20e41530b81249a58455601b0b7d6cbd7b3900e24fd