[INFO] cloning repository https://github.com/rustyhorde/mussh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rustyhorde/mussh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustyhorde%2Fmussh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustyhorde%2Fmussh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0767c62cf0ff0585b08b66c6be2a3d4bab1b4713
[INFO] documenting rustyhorde/mussh against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustyhorde%2Fmussh" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rustyhorde/mussh on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rustyhorde/mussh
[INFO] finished tweaking git repo https://github.com/rustyhorde/mussh
[INFO] tweaked toml for git repo https://github.com/rustyhorde/mussh written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/rustyhorde/mussh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--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 ahash v0.4.6
[INFO] [stderr]   Downloaded ssh2 v0.8.2
[INFO] [stderr]   Downloaded hashlink v0.6.0
[INFO] [stderr]   Downloaded rusqlite v0.24.1
[INFO] [stderr]   Downloaded libsqlite3-sys v0.20.1
[INFO] [stderr]   Downloaded wait_group v0.1.4
[INFO] [stderr]   Downloaded libmussh v1.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7d2aacb3f1d8cad9580cd11c0de57821f2f79e521dcba3de24dbf0f03e9921a
[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" "a7d2aacb3f1d8cad9580cd11c0de57821f2f79e521dcba3de24dbf0f03e9921a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7d2aacb3f1d8cad9580cd11c0de57821f2f79e521dcba3de24dbf0f03e9921a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7d2aacb3f1d8cad9580cd11c0de57821f2f79e521dcba3de24dbf0f03e9921a", kill_on_drop: false }`
[INFO] [stdout] a7d2aacb3f1d8cad9580cd11c0de57821f2f79e521dcba3de24dbf0f03e9921a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f21c65bb8a610ddd677dd239ef9d78e45769678fe07299021d9e34521bcf0f3
[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" "5f21c65bb8a610ddd677dd239ef9d78e45769678fe07299021d9e34521bcf0f3", 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] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]     Checking wait_group v0.1.4
[INFO] [stderr]    Compiling libssh2-sys v0.2.19
[INFO] [stderr]    Compiling libsqlite3-sys v0.20.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking slog-try v0.2.0
[INFO] [stderr]     Checking slog-term v2.6.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking indexmap v1.6.0
[INFO] [stderr]     Checking hashlink v0.6.0
[INFO] [stderr]     Checking slog-async v2.5.0
[INFO] [stderr]     Checking rusqlite v0.24.1
[INFO] [stderr]     Checking ssh2 v0.8.2
[INFO] [stderr]     Checking libmussh v1.1.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libmussh-1.1.3/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(crate_visibility_modifier, error_iter)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libmussh`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5f21c65bb8a610ddd677dd239ef9d78e45769678fe07299021d9e34521bcf0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f21c65bb8a610ddd677dd239ef9d78e45769678fe07299021d9e34521bcf0f3", kill_on_drop: false }`
[INFO] [stdout] 5f21c65bb8a610ddd677dd239ef9d78e45769678fe07299021d9e34521bcf0f3
