[INFO] updating cached 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" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e420cfbc4852492603239c1fa08ddd827cbe6d6
[INFO] checking madadam/rust-async-experiments against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmadadam%2Frust-async-experiments" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/madadam/rust-async-experiments on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/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" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "fetch" "--locked" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb4ce45d46e4d464de02ea6e0054a1a9ce27d123ba99fd16c97e77f8a2fc7a76
[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" "bb4ce45d46e4d464de02ea6e0054a1a9ce27d123ba99fd16c97e77f8a2fc7a76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb4ce45d46e4d464de02ea6e0054a1a9ce27d123ba99fd16c97e77f8a2fc7a76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb4ce45d46e4d464de02ea6e0054a1a9ce27d123ba99fd16c97e77f8a2fc7a76", kill_on_drop: false }`
[INFO] [stdout] bb4ce45d46e4d464de02ea6e0054a1a9ce27d123ba99fd16c97e77f8a2fc7a76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--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] f74105e5ee8e3e2a694532e922562244a8a749bc00734baecd75456aa677c0ce
[INFO] running `Command { std: "docker" "start" "-a" "f74105e5ee8e3e2a694532e922562244a8a749bc00734baecd75456aa677c0ce", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking matches v0.1.2
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking unicode-normalization v0.1.2
[INFO] [stderr]     Checking traitobject v0.0.3
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.5
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking httparse v1.1.2
[INFO] [stderr]     Checking lazy_static v0.2.1
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking humantime v0.1.3
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking unicode-bidi v0.2.3
[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] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]     Checking futures v0.1.1 (https://github.com/alexcrichton/futures-rs#59de7fe6)
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking miow v0.1.3
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking ordered-float v0.1.0
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking regex v0.1.77
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0642`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f74105e5ee8e3e2a694532e922562244a8a749bc00734baecd75456aa677c0ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f74105e5ee8e3e2a694532e922562244a8a749bc00734baecd75456aa677c0ce", kill_on_drop: false }`
[INFO] [stdout] f74105e5ee8e3e2a694532e922562244a8a749bc00734baecd75456aa677c0ce