[INFO] fetching crate libmussh 1.1.3...
[INFO] documenting libmussh-1.1.3 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate libmussh 1.1.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate libmussh 1.1.3 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 crates.io crate libmussh 1.1.3
[INFO] finished tweaking crates.io crate libmussh 1.1.3
[INFO] tweaked toml for crates.io crate libmussh 1.1.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded slog-try v0.2.0
[INFO] [stderr]   Downloaded ssh2 v0.8.2
[INFO] [stderr]   Downloaded wait_group v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 05aa63f84f727fc6ec84b07990739f598d1504085bdb84d5ba1870cab29c5b6a
[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" "05aa63f84f727fc6ec84b07990739f598d1504085bdb84d5ba1870cab29c5b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05aa63f84f727fc6ec84b07990739f598d1504085bdb84d5ba1870cab29c5b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05aa63f84f727fc6ec84b07990739f598d1504085bdb84d5ba1870cab29c5b6a", kill_on_drop: false }`
[INFO] [stdout] 05aa63f84f727fc6ec84b07990739f598d1504085bdb84d5ba1870cab29c5b6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 56996901f981cbe6b483a0d024168dc39569d2b2c1ea56c5cf15f4c57b94b4a9
[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" "56996901f981cbe6b483a0d024168dc39569d2b2c1ea56c5cf15f4c57b94b4a9", 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]    Compiling slog v2.5.2
[INFO] [stderr]     Checking wait_group v0.1.4
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]    Compiling libssh2-sys v0.2.19
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking slog-try v0.2.0
[INFO] [stderr]     Checking ssh2 v0.8.2
[INFO] [stderr]  Documenting libmussh v1.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `intra_doc_link_resolution_failure` has been renamed to `broken_intra_doc_links`
[INFO] [stdout]   --> src/lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     intra_doc_link_resolution_failure,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `broken_intra_doc_links`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> 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: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `libmussh`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name libmussh src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-ef93aabf0656a46c.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-a2c6ee58dc56692c.rmeta --extern getset=/opt/rustwide/target/debug/deps/libgetset-7a9d91436f1ac08d.so --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-81d349d9b787235f.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-6f64639daa89580e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-206cfb4b5fe90396.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-e3451a74a47779dd.so --extern slog=/opt/rustwide/target/debug/deps/libslog-cee283d548092c48.rmeta --extern slog_try=/opt/rustwide/target/debug/deps/libslog_try-c5f5b6863787ddcb.rmeta --extern ssh2=/opt/rustwide/target/debug/deps/libssh2-a786f594a8b5e141.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-ac0ec9354b2ef8d1.rmeta --extern wait_group=/opt/rustwide/target/debug/deps/libwait_group-2c3a745ad98587a5.rmeta --cap-lints=warn --crate-version 1.1.3` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "56996901f981cbe6b483a0d024168dc39569d2b2c1ea56c5cf15f4c57b94b4a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56996901f981cbe6b483a0d024168dc39569d2b2c1ea56c5cf15f4c57b94b4a9", kill_on_drop: false }`
[INFO] [stdout] 56996901f981cbe6b483a0d024168dc39569d2b2c1ea56c5cf15f4c57b94b4a9
