[INFO] cloning repository https://github.com/apognu/htb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/apognu/htb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fapognu%2Fhtb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fapognu%2Fhtb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57168bc61021fc79d1ccfacd3e9cc3280c515009
[INFO] documenting apognu/htb 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%2Fapognu%2Fhtb" "/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/apognu/htb 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/apognu/htb
[INFO] finished tweaking git repo https://github.com/apognu/htb
[INFO] tweaked toml for git repo https://github.com/apognu/htb written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/apognu/htb 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 terminfo v0.6.1
[INFO] [stderr]   Downloaded mortal v0.2.1
[INFO] [stderr]   Downloaded libnotify-sys v1.0.2
[INFO] [stderr]   Downloaded smallstr v0.1.0
[INFO] [stderr]   Downloaded linefeed v0.6.0
[INFO] [stderr]   Downloaded libnotify v1.0.3
[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-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63ae735b0013aa1ccbd8a3a45c33a007e585705e41adb6d443949bba9c00f9a4
[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" "63ae735b0013aa1ccbd8a3a45c33a007e585705e41adb6d443949bba9c00f9a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63ae735b0013aa1ccbd8a3a45c33a007e585705e41adb6d443949bba9c00f9a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63ae735b0013aa1ccbd8a3a45c33a007e585705e41adb6d443949bba9c00f9a4", kill_on_drop: false }`
[INFO] [stdout] 63ae735b0013aa1ccbd8a3a45c33a007e585705e41adb6d443949bba9c00f9a4
[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-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b4db3ebf19a83bfeab5b5dfad434fa2bfe8b402f3c938de644bb27f2503a796
[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" "6b4db3ebf19a83bfeab5b5dfad434fa2bfe8b402f3c938de644bb27f2503a796", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]    Compiling gdk-pixbuf v0.3.0
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling glib-sys v0.5.0
[INFO] [stderr]    Compiling gobject-sys v0.5.0
[INFO] [stderr]    Compiling gio-sys v0.5.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.5.0
[INFO] [stderr]    Compiling libnotify-sys v1.0.2
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking nom v4.2.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking smallstr v0.1.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking openssl-sys v0.9.54
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking openssl v0.10.28
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking glib v0.4.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling terminfo v0.6.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]     Checking libnotify v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]     Checking tokio v0.2.16
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1 (https://github.com/clap-rs/clap#4b5d7722)
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking mortal v0.2.1
[INFO] [stderr]     Checking clap v3.0.0-beta.1 (https://github.com/clap-rs/clap#4b5d7722)
[INFO] [stderr]     Checking linefeed v0.6.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.2.4
[INFO] [stderr]     Checking hyper v0.13.4
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.50
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking reqwest v0.10.4
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]  Documenting htb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `htb`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name htb src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-b47149159132f784.so --extern chrono=/opt/rustwide/target/debug/deps/libchrono-b0bb52a3ea69c787.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-753976d4bd0fc91f.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-a84bc7d29066923b.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-a7e23c3c1d4e8145.rmeta --extern htmlescape=/opt/rustwide/target/debug/deps/libhtmlescape-5a5fb6300a82748b.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern libnotify=/opt/rustwide/target/debug/deps/liblibnotify-473895c5531e7d24.rmeta --extern linefeed=/opt/rustwide/target/debug/deps/liblinefeed-9140ed9dd687b8c0.rmeta --extern prettytable=/opt/rustwide/target/debug/deps/libprettytable-e4f192c7aba0ec96.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-3e4befccca2cfbd1.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2b0e50d0eec41856.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-d46f6c8f0e60a629.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-f36029bfee91b6a2.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-887a3a413c512fbb.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "6b4db3ebf19a83bfeab5b5dfad434fa2bfe8b402f3c938de644bb27f2503a796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b4db3ebf19a83bfeab5b5dfad434fa2bfe8b402f3c938de644bb27f2503a796", kill_on_drop: false }`
[INFO] [stdout] 6b4db3ebf19a83bfeab5b5dfad434fa2bfe8b402f3c938de644bb27f2503a796