[INFO] cloning repository https://github.com/clearloop/leetcode-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/clearloop/leetcode-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclearloop%2Fleetcode-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclearloop%2Fleetcode-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 739eeaf4960627155405d15af6ab510dd81160cb
[INFO] documenting clearloop/leetcode-cli 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%2Fclearloop%2Fleetcode-cli" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/clearloop/leetcode-cli 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/clearloop/leetcode-cli
[INFO] finished tweaking git repo https://github.com/clearloop/leetcode-cli
[INFO] tweaked toml for git repo https://github.com/clearloop/leetcode-cli written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 colored v1.9.3
[INFO] [stderr]   Downloaded aes-soft v0.3.3
[INFO] [stderr]   Downloaded secret-service v1.1.0
[INFO] [stderr]   Downloaded sha2 v0.8.2
[INFO] [stderr]   Downloaded aes v0.3.2
[INFO] [stderr]   Downloaded pyo3cls v0.8.5
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.8.5
[INFO] [stderr]   Downloaded dbus v0.2.3
[INFO] [stderr]   Downloaded entities v1.0.1
[INFO] [stderr]   Downloaded hkdf v0.8.0
[INFO] [stderr]   Downloaded escaper v0.1.0
[INFO] [stderr]   Downloaded keyring v0.8.0
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded inventory-impl v0.1.8
[INFO] [stderr]   Downloaded pyo3 v0.8.5
[INFO] [stderr]   Downloaded ctor v0.1.15
[INFO] [stderr]   Downloaded ghost v0.1.2
[INFO] [stderr]   Downloaded inventory v0.1.8
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded unindent v0.1.6
[INFO] [stderr]   Downloaded cargo-husky v1.5.0
[INFO] [stderr]   Downloaded block-modes v0.3.3
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded num v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] b7af2acbf1c86b4a9122484c15de5b9888b6c368a262da28d111ddcd748d4408
[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" "b7af2acbf1c86b4a9122484c15de5b9888b6c368a262da28d111ddcd748d4408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7af2acbf1c86b4a9122484c15de5b9888b6c368a262da28d111ddcd748d4408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7af2acbf1c86b4a9122484c15de5b9888b6c368a262da28d111ddcd748d4408", kill_on_drop: false }`
[INFO] [stdout] b7af2acbf1c86b4a9122484c15de5b9888b6c368a262da28d111ddcd748d4408
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 2a1be8f95b554b69b723dc871a2ea349d1a3b23e49dc99d5fa473e76336c3d21
[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" "2a1be8f95b554b69b723dc871a2ea349d1a3b23e49dc99d5fa473e76336c3d21", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking entities v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[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 tracing v0.1.19
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking escaper v0.1.0
[INFO] [stderr]     Checking aes-soft v0.3.3
[INFO] [stderr]     Checking block-modes v0.3.3
[INFO] [stderr]     Checking hkdf v0.8.0
[INFO] [stderr]     Checking aes v0.3.2
[INFO] [stderr]     Checking async-compression v0.3.5
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking secret-service v1.1.0
[INFO] [stderr]     Checking keyring v0.8.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking diesel v1.4.5
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking leetcode-cli v0.2.25 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting leetcode-cli v0.2.25 (/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: 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] [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] [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 clap=/opt/rustwide/target/debug/deps/libclap-d8de5d56e70a343c.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-b9cd7a8fdc23d6ca.rmeta --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-9015c4e824ad089c.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-54b02856c0019bc7.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-c0cafd2ce9781613.rmeta --extern escaper=/opt/rustwide/target/debug/deps/libescaper-3fbb0deb641a4ddb.rmeta --extern keyring=/opt/rustwide/target/debug/deps/libkeyring-84362826d90948c7.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-95a9d57e67df36ac.rmeta --extern openssl=/opt/rustwide/target/debug/deps/libopenssl-d93c6407fe47564b.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-11946bb198eefaee.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-c251ca4f1be2ef5d.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-75fe6349062fa2ec.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-1a8acefef204c79c.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-6e6b151f71d31155.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-d5a5074c67b1245c.rmeta --cap-lints=warn --crate-version 0.2.25` (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" "2a1be8f95b554b69b723dc871a2ea349d1a3b23e49dc99d5fa473e76336c3d21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a1be8f95b554b69b723dc871a2ea349d1a3b23e49dc99d5fa473e76336c3d21", kill_on_drop: false }`
[INFO] [stdout] 2a1be8f95b554b69b723dc871a2ea349d1a3b23e49dc99d5fa473e76336c3d21