[INFO] cloning repository https://github.com/breed/punnel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/breed/punnel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47dd7c90b93629ca61d041d753111bd24c1d60cc
[INFO] documenting breed/punnel against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbreed%2Fpunnel" "/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/breed/punnel on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/breed/punnel
[INFO] finished tweaking git repo https://github.com/breed/punnel
[INFO] tweaked toml for git repo https://github.com/breed/punnel written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/breed/punnel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio v0.6.2
[INFO] [stderr]   Downloaded futures v0.1.7
[INFO] [stderr]   Downloaded tokio-core v0.1.3
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d8bf08a002838379f91ecb989be675eb1ae30aa6c1a17a56d14034957c22187
[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" "4d8bf08a002838379f91ecb989be675eb1ae30aa6c1a17a56d14034957c22187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d8bf08a002838379f91ecb989be675eb1ae30aa6c1a17a56d14034957c22187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d8bf08a002838379f91ecb989be675eb1ae30aa6c1a17a56d14034957c22187", kill_on_drop: false }`
[INFO] [stdout] 4d8bf08a002838379f91ecb989be675eb1ae30aa6c1a17a56d14034957c22187
[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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc6c691242b7c41ef326595edd5ff411f7a86fe9d96ef46c5f41953813be5d45
[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" "cc6c691242b7c41ef326595edd5ff411f7a86fe9d96ef46c5f41953813be5d45", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking futures v0.1.7
[INFO] [stderr]     Checking clap v2.20.0
[INFO] [stdout] error: missing fragment specifier
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.20.0/src/macros.rs:621:41
[INFO] [stdout]     |
[INFO] [stdout] 621 |     (@arg ($arg:expr) $modes:tt !$ident $($tail:tt)*) => {
[INFO] [stdout]     |                                         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `clap`.
[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" "cc6c691242b7c41ef326595edd5ff411f7a86fe9d96ef46c5f41953813be5d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc6c691242b7c41ef326595edd5ff411f7a86fe9d96ef46c5f41953813be5d45", kill_on_drop: false }`
[INFO] [stdout] cc6c691242b7c41ef326595edd5ff411f7a86fe9d96ef46c5f41953813be5d45