[INFO] cloning repository https://github.com/madadam/rust-async-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/madadam/rust-async-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadadam%2Frust-async-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadadam%2Frust-async-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e420cfbc4852492603239c1fa08ddd827cbe6d6
[INFO] testing madadam/rust-async-experiments against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadadam%2Frust-async-experiments" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/madadam/rust-async-experiments on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/madadam/rust-async-experiments
[INFO] finished tweaking git repo https://github.com/madadam/rust-async-experiments
[INFO] tweaked toml for git repo https://github.com/madadam/rust-async-experiments written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/madadam/rust-async-experiments already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/alexcrichton/futures-rs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ordered-float v0.1.0
[INFO] [stderr]   Downloaded serde v0.7.15
[INFO] [stderr]   Downloaded rand v0.3.14
[INFO] [stderr]   Downloaded num-traits v0.1.36
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded typemap v0.3.3
[INFO] [stderr]   Downloaded toml v0.1.30
[INFO] [stderr]   Downloaded fs2 v0.2.5
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] [stderr]   Downloaded serde-value v0.2.1
[INFO] [stderr]   Downloaded traitobject v0.0.3
[INFO] [stderr]   Downloaded lazy_static v0.2.1
[INFO] [stderr]   Downloaded num v0.1.36
[INFO] [stderr]   Downloaded unicode-normalization v0.1.2
[INFO] [stderr]   Downloaded humantime v0.1.3
[INFO] [stderr]   Downloaded num-integer v0.1.32
[INFO] [stderr]   Downloaded num-iter v0.1.32
[INFO] [stderr]   Downloaded ws v0.5.3
[INFO] [stderr]   Downloaded bincode v0.5.9
[INFO] [stderr]   Downloaded url v1.2.1
[INFO] [stderr]   Downloaded matches v0.1.2
[INFO] [stderr]   Downloaded unwrap v1.1.0
[INFO] [stderr]   Downloaded log4rs v0.4.8
[INFO] [stderr]   Downloaded httparse v1.1.2
[INFO] [stderr]   Downloaded regex-syntax v0.3.5
[INFO] [stderr]   Downloaded miow v0.1.3
[INFO] [stderr]   Downloaded rustc-serialize v0.3.19
[INFO] [stderr]   Downloaded unicode-bidi v0.2.3
[INFO] [stderr]   Downloaded regex v0.1.77
[INFO] [stderr]   Downloaded libc v0.2.16
[INFO] [stderr]   Downloaded maidsafe_utilities v0.9.0
[INFO] [stderr]   Downloaded config_file_handler v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79618993f60fa664c079165fd074aeb9da2b9963fa01a151662e610561d9b389
[INFO] running `Command { std: "docker" "start" "-a" "79618993f60fa664c079165fd074aeb9da2b9963fa01a151662e610561d9b389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79618993f60fa664c079165fd074aeb9da2b9963fa01a151662e610561d9b389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79618993f60fa664c079165fd074aeb9da2b9963fa01a151662e610561d9b389", kill_on_drop: false }`
[INFO] [stdout] 79618993f60fa664c079165fd074aeb9da2b9963fa01a151662e610561d9b389
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 737e859ea9d2892275c417ce704411c28a0c16c7bb7fe84dc65e1c8cf8e925cc
[INFO] running `Command { std: "docker" "start" "-a" "737e859ea9d2892275c417ce704411c28a0c16c7bb7fe84dc65e1c8cf8e925cc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.16
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling serde v0.7.15
[INFO] [stderr]    Compiling matches v0.1.2
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling unicode-normalization v0.1.2
[INFO] [stderr]    Compiling traitobject v0.0.3
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling quick-error v1.1.0
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling regex-syntax v0.3.5
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling httparse v1.1.2
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling unwrap v1.1.0
[INFO] [stderr]    Compiling lazy_static v0.2.1
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.19/src/serialize.rs:147:45
[INFO] [stdout]     |
[INFO] [stdout] 147 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0642`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "737e859ea9d2892275c417ce704411c28a0c16c7bb7fe84dc65e1c8cf8e925cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "737e859ea9d2892275c417ce704411c28a0c16c7bb7fe84dc65e1c8cf8e925cc", kill_on_drop: false }`
[INFO] [stdout] 737e859ea9d2892275c417ce704411c28a0c16c7bb7fe84dc65e1c8cf8e925cc