[INFO] cloning repository https://github.com/Don42/exlog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Don42/exlog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDon42%2Fexlog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDon42%2Fexlog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9e6b7a05d84edfc8ba4fe971b66195d8c9a7b6f
[INFO] documenting Don42/exlog 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%2FDon42%2Fexlog" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Don42/exlog 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/Don42/exlog
[INFO] finished tweaking git repo https://github.com/Don42/exlog
[INFO] tweaked toml for git repo https://github.com/Don42/exlog written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Don42/exlog 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 unicode-segmentation v0.1.3
[INFO] [stderr]   Downloaded slog v2.0.12
[INFO] [stderr]   Downloaded term_size v0.2.3
[INFO] [stderr]   Downloaded take_mut v0.1.3
[INFO] [stderr]   Downloaded isatty v0.1.3
[INFO] [stderr]   Downloaded slog-async v2.1.0
[INFO] [stderr]   Downloaded serde v1.0.15
[INFO] [stderr]   Downloaded clap v2.19.3
[INFO] [stderr]   Downloaded serde_derive v1.0.15
[INFO] [stderr]   Downloaded strsim v0.5.2
[INFO] [stderr]   Downloaded open v1.2.1
[INFO] [stderr]   Downloaded libc v0.2.31
[INFO] [stderr]   Downloaded slog-term v2.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 84f99828e1b1804fbd38bff406e292e095a599d573a2c95396b7c0e22aff1d0e
[INFO] running `Command { std: "docker" "start" "-a" "84f99828e1b1804fbd38bff406e292e095a599d573a2c95396b7c0e22aff1d0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84f99828e1b1804fbd38bff406e292e095a599d573a2c95396b7c0e22aff1d0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f99828e1b1804fbd38bff406e292e095a599d573a2c95396b7c0e22aff1d0e", kill_on_drop: false }`
[INFO] [stdout] 84f99828e1b1804fbd38bff406e292e095a599d573a2c95396b7c0e22aff1d0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 697e73b95a05057eaa0e4d304f02f994843bb40859d56b3cf54faceb7dd3e4b3
[INFO] running `Command { std: "docker" "start" "-a" "697e73b95a05057eaa0e4d304f02f994843bb40859d56b3cf54faceb7dd3e4b3", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.31
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking lazy_static v0.2.9
[INFO] [stderr]     Checking slog v2.0.12
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking take_mut v0.1.3
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking strsim v0.5.2
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking serde v1.0.15
[INFO] [stderr]     Checking open v1.2.1
[INFO] [stderr]     Checking xdg v2.1.0
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking slog-async v2.1.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking isatty v0.1.3
[INFO] [stderr]     Checking term_size v0.2.3
[INFO] [stderr]     Checking clap v2.19.3
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stdout] error: missing fragment specifier
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.19.3/src/macros.rs:510:41
[INFO] [stdout]     |
[INFO] [stdout] 510 |     (@arg ($arg:expr) $modes:tt !$ident $($tail:tt)*) => {
[INFO] [stdout]     |                                         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.15
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]     Checking slog-term v2.2.0
[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" "697e73b95a05057eaa0e4d304f02f994843bb40859d56b3cf54faceb7dd3e4b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697e73b95a05057eaa0e4d304f02f994843bb40859d56b3cf54faceb7dd3e4b3", kill_on_drop: false }`
[INFO] [stdout] 697e73b95a05057eaa0e4d304f02f994843bb40859d56b3cf54faceb7dd3e4b3