[INFO] fetching crate leetcode-cli 0.3.0...
[INFO] documenting leetcode-cli-0.3.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate leetcode-cli 0.3.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate leetcode-cli 0.3.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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-3/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" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac5ff6aedea2077756754e4bdd42c9f44d92d96640c93aac945e3bd07cb2a5e7
[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" "ac5ff6aedea2077756754e4bdd42c9f44d92d96640c93aac945e3bd07cb2a5e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac5ff6aedea2077756754e4bdd42c9f44d92d96640c93aac945e3bd07cb2a5e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac5ff6aedea2077756754e4bdd42c9f44d92d96640c93aac945e3bd07cb2a5e7", kill_on_drop: false }`
[INFO] [stdout] ac5ff6aedea2077756754e4bdd42c9f44d92d96640c93aac945e3bd07cb2a5e7
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d07789ecdf72a67447f3b1c30b8039f45fe05c44a4337da3f3418eebaa84d08
[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" "8d07789ecdf72a67447f3b1c30b8039f45fe05c44a4337da3f3418eebaa84d08", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.1.15
[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 tracing v0.1.21
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking flate2 v1.0.18
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking aes-soft v0.3.3
[INFO] [stderr]     Checking block-modes v0.3.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking hkdf v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking aes v0.3.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking async-compression v0.3.5
[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 tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.25
[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 diesel v1.4.5
[INFO] [stderr]     Checking serde v1.0.116
[INFO] [stderr]     Checking hyper v0.13.8
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.58
[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 stable 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-ce6689fa57390654.so --extern clap=/opt/rustwide/target/debug/deps/libclap-4474a154604f0aaf.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-1ea5e38d19631714.rmeta --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-8bb2e05b0f61dffb.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-d2b76cbe2cb3df96.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-0dcb24d10275e000.rmeta --extern escaper=/opt/rustwide/target/debug/deps/libescaper-6c1bd2e82901e44b.rmeta --extern keyring=/opt/rustwide/target/debug/deps/libkeyring-3f427be93f2810db.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-48fbfd5d624c4cb9.rmeta --extern openssl=/opt/rustwide/target/debug/deps/libopenssl-6346480c2942637f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-c0f679ee222448d4.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-0879519133e6417a.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-bf5c3e34d362b61d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-36ea53049754be67.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-193e66eae152b9e3.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-0402d6df6e90b947.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-180e575dcf8dc05c.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[E0554]: `#![feature]` may not be used on the stable 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: 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" "8d07789ecdf72a67447f3b1c30b8039f45fe05c44a4337da3f3418eebaa84d08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d07789ecdf72a67447f3b1c30b8039f45fe05c44a4337da3f3418eebaa84d08", kill_on_drop: false }`
[INFO] [stdout] 8d07789ecdf72a67447f3b1c30b8039f45fe05c44a4337da3f3418eebaa84d08
