[INFO] cloning repository https://github.com/sci4me/bfkit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sci4me/bfkit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsci4me%2Fbfkit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsci4me%2Fbfkit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07eff9f557101ed7655e60399eb213cc93b3b152
[INFO] testing sci4me/bfkit against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsci4me%2Fbfkit" "/workspace/builds/worker-75/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-75/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sci4me/bfkit 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/sci4me/bfkit
[INFO] finished tweaking git repo https://github.com/sci4me/bfkit
[INFO] tweaked toml for git repo https://github.com/sci4me/bfkit written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] crate git repo https://github.com/sci4me/bfkit 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]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] 7fe709d6b1aecb52e9a82867423f45ce0fbc8183fea70887d268499570a7506b
[INFO] running `Command { std: "docker" "start" "-a" "7fe709d6b1aecb52e9a82867423f45ce0fbc8183fea70887d268499570a7506b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fe709d6b1aecb52e9a82867423f45ce0fbc8183fea70887d268499570a7506b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fe709d6b1aecb52e9a82867423f45ce0fbc8183fea70887d268499570a7506b", kill_on_drop: false }`
[INFO] [stdout] 7fe709d6b1aecb52e9a82867423f45ce0fbc8183fea70887d268499570a7506b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] 35ee28439c59b01b559bea196fd39dbfad7ad2963d1d004522c3189904f49b55
[INFO] running `Command { std: "docker" "start" "-a" "35ee28439c59b01b559bea196fd39dbfad7ad2963d1d004522c3189904f49b55", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.57
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling bfkit v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.23s
[INFO] running `Command { std: "docker" "inspect" "35ee28439c59b01b559bea196fd39dbfad7ad2963d1d004522c3189904f49b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35ee28439c59b01b559bea196fd39dbfad7ad2963d1d004522c3189904f49b55", kill_on_drop: false }`
[INFO] [stdout] 35ee28439c59b01b559bea196fd39dbfad7ad2963d1d004522c3189904f49b55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] 5a1c46b3d9894591ee8f882aad42ef767b80b80b07e04aad298c4b2bca321abd
[INFO] running `Command { std: "docker" "start" "-a" "5a1c46b3d9894591ee8f882aad42ef767b80b80b07e04aad298c4b2bca321abd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bfkit v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:216:9
[INFO] [stdout]     |
[INFO] [stdout] 216 |         subject.set_breakpoint(3);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:250:9
[INFO] [stdout]     |
[INFO] [stdout] 250 |         subject.set_breakpoint(1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `Command { std: "docker" "inspect" "5a1c46b3d9894591ee8f882aad42ef767b80b80b07e04aad298c4b2bca321abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a1c46b3d9894591ee8f882aad42ef767b80b80b07e04aad298c4b2bca321abd", kill_on_drop: false }`
[INFO] [stdout] 5a1c46b3d9894591ee8f882aad42ef767b80b80b07e04aad298c4b2bca321abd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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] cdd6270546477bbf0ec6de518bbec3e44a789ad7a0b08a21c4035e68447bbeea
[INFO] running `Command { std: "docker" "start" "-a" "cdd6270546477bbf0ec6de518bbec3e44a789ad7a0b08a21c4035e68447bbeea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/interp.rs:216:9
[INFO] [stderr]     |
[INFO] [stderr] 216 |         subject.set_breakpoint(3);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/interp.rs:250:9
[INFO] [stderr]     |
[INFO] [stderr] 250 |         subject.set_breakpoint(1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `bfkit` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bfkit-58abafa37a39d5cf)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test compiler::tests::compile_works ... ok
[INFO] [stdout] test interp::tests::get_returns_error_when_address_out_of_bounds ... ok
[INFO] [stdout] test interp::tests::get_works ... ok
[INFO] [stdout] test interp::tests::delete_breakpoint_works ... ok
[INFO] [stdout] test interp::tests::run_stops_for_breakpoints ... ok
[INFO] [stdout] test interp::tests::jump_works ... ok
[INFO] [stdout] test interp::tests::jump_returns_error_when_address_out_of_bounds ... ok
[INFO] [stdout] test interp::tests::run_works ... ok
[INFO] [stdout] test interp::tests::select_returns_error_when_address_out_of_bounds ... ok
[INFO] [stdout] test interp::tests::select_works ... ok
[INFO] [stdout] test interp::tests::set_breakpoint_works ... ok
[INFO] [stdout] test interp::tests::step_works ... ok
[INFO] [stdout] test interp::tests::set_returns_error_when_address_out_of_bounds ... ok
[INFO] [stdout] test interp::tests::set_works ... ok
[INFO] [stdout] test ir::tests::ir_to_string_works ... ok
[INFO] [stdout] test optimizer::tests::clear_loop_removal_works ... ok
[INFO] [stdout] test optimizer::tests::contraction_works ... ok
[INFO] [stdout] test optimizer::tests::dead_code_removal_works ... ok
[INFO] [stdout] test optimizer::tests::optimize_works ... ok
[INFO] [stdout] test optimizer::tests::scan_loop_removal_works ... ok
[INFO] [stdout] test parser::tests::parse_parses_brainfuck_instructions ... ok
[INFO] [stdout] test parser::tests::parse_str_parses_brainfuck_instructions ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 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/bfkit-82e00659551117cf)
[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 bfkit
[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" "cdd6270546477bbf0ec6de518bbec3e44a789ad7a0b08a21c4035e68447bbeea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdd6270546477bbf0ec6de518bbec3e44a789ad7a0b08a21c4035e68447bbeea", kill_on_drop: false }`
[INFO] [stdout] cdd6270546477bbf0ec6de518bbec3e44a789ad7a0b08a21c4035e68447bbeea