[INFO] fetching crate leetcode-cli 0.3.0...
[INFO] documenting leetcode-cli-0.3.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate leetcode-cli 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate leetcode-cli 0.3.0 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 leetcode-cli 0.3.0
[INFO] finished tweaking crates.io crate leetcode-cli 0.3.0
[INFO] tweaked toml for crates.io crate leetcode-cli 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate leetcode-cli 0.3.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded keyring v0.8.0
[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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9465cc8e32d1cdff1bed5696cdf19355a80284e09d72b8f4291982fa48cfa228
[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" "9465cc8e32d1cdff1bed5696cdf19355a80284e09d72b8f4291982fa48cfa228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9465cc8e32d1cdff1bed5696cdf19355a80284e09d72b8f4291982fa48cfa228", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9465cc8e32d1cdff1bed5696cdf19355a80284e09d72b8f4291982fa48cfa228", kill_on_drop: false }`
[INFO] [stdout] 9465cc8e32d1cdff1bed5696cdf19355a80284e09d72b8f4291982fa48cfa228
[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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b122e0fe676f8afb46fcdc70de4b139658b433eddb6191d292a3f3e502253057
[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" "b122e0fe676f8afb46fcdc70de4b139658b433eddb6191d292a3f3e502253057", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling pin-project-internal v0.4.25
[INFO] [stderr]     Checking entities v1.0.1
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking dbus v0.2.3
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking flate2 v1.0.18
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking openssl-sys v0.9.58
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking escaper v0.1.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking async-compression v0.3.5
[INFO] [stderr]     Checking openssl v0.10.30
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking secret-service v1.1.0
[INFO] [stderr]     Checking keyring v0.8.0
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking pin-project v0.4.25
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking serde v1.0.116
[INFO] [stderr]     Checking diesel v1.4.5
[INFO] [stderr]     Checking hyper v0.13.8
[INFO] [stderr]     Checking serde_json v1.0.58
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking leetcode-cli v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting leetcode-cli v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:244:1
[INFO] [stdout]     |
[INFO] [stdout] 244 | #![feature(try_trait)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:244:1
[INFO] [stdout]     |
[INFO] [stdout] 244 | #![feature(try_trait)]
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `leetcode-cli`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name leetcode_cli 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 async_trait=/opt/rustwide/target/debug/deps/libasync_trait-79fe29bd3e086306.so --extern clap=/opt/rustwide/target/debug/deps/libclap-502cbb38f2194fad.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-48f794773c22127e.rmeta --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-5cd1d95ca1806867.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-9e1a6f3054a26c40.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-e5616ff46eb72130.rmeta --extern escaper=/opt/rustwide/target/debug/deps/libescaper-3fbb0deb641a4ddb.rmeta --extern keyring=/opt/rustwide/target/debug/deps/libkeyring-925ea58b3bcfe292.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-95a9d57e67df36ac.rmeta --extern openssl=/opt/rustwide/target/debug/deps/libopenssl-29cf1a16e0bb2c77.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-780b7212f4615327.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-c251ca4f1be2ef5d.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-e4e7c0c1006fa42f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c3842b882cd5f269.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d2ebb284423bf51.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-15cf833929a2f953.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-86cc10ba1de6d64b.rmeta --cap-lints=warn --crate-version 0.3.0` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "b122e0fe676f8afb46fcdc70de4b139658b433eddb6191d292a3f3e502253057", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b122e0fe676f8afb46fcdc70de4b139658b433eddb6191d292a3f3e502253057", kill_on_drop: false }`
[INFO] [stdout] b122e0fe676f8afb46fcdc70de4b139658b433eddb6191d292a3f3e502253057
