[INFO] cloning repository https://github.com/IgorBoyarshin/distributed_databases
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IgorBoyarshin/distributed_databases" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorBoyarshin%2Fdistributed_databases", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorBoyarshin%2Fdistributed_databases'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03e3782494a6725bdee2384df0b5b8f43c84444a
[INFO] documenting IgorBoyarshin/distributed_databases against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIgorBoyarshin%2Fdistributed_databases" "/workspace/builds/worker-98/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-98/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IgorBoyarshin/distributed_databases on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/IgorBoyarshin/distributed_databases
[INFO] finished tweaking git repo https://github.com/IgorBoyarshin/distributed_databases
[INFO] tweaked toml for git repo https://github.com/IgorBoyarshin/distributed_databases written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] crate git repo https://github.com/IgorBoyarshin/distributed_databases already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a476bc38a233988d5e4727376b90e13a262c4a6c5196c194924e24f214580cc3
[INFO] running `Command { std: "docker" "start" "-a" "a476bc38a233988d5e4727376b90e13a262c4a6c5196c194924e24f214580cc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a476bc38a233988d5e4727376b90e13a262c4a6c5196c194924e24f214580cc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a476bc38a233988d5e4727376b90e13a262c4a6c5196c194924e24f214580cc3", kill_on_drop: false }`
[INFO] [stdout] a476bc38a233988d5e4727376b90e13a262c4a6c5196c194924e24f214580cc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67c5b627af386610db4c47be738f94ff41cd9b4873f25afddc24f1a98741ff62
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[INFO] [stderr]  Documenting distributed_databased v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/new.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(destructuring_assignment)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/new.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(duration_zero)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/new.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(duration_saturating_ops)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/new.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(linked_list_remove)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 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 `distributed_databased`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name new src/new.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-6a3c19d900036a9a.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-e7775a43de0dc74f.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-99f487567a754762.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-bc528275b551840f.rmeta --extern mongodb=/opt/rustwide/target/debug/deps/libmongodb-1547003903077abe.rmeta --extern plotters=/opt/rustwide/target/debug/deps/libplotters-a7ebdc4d05733151.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-ed1a37dffd59f38f.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-0e99cd620e1ef403.rmeta --extern rand_distr=/opt/rustwide/target/debug/deps/librand_distr-a7a10a40ac5159e9.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-1a8aab5a3857b97b.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-772ef63241b180a2.rmeta --extern variant_count=/opt/rustwide/target/debug/deps/libvariant_count-8d37b84b08358be9.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "67c5b627af386610db4c47be738f94ff41cd9b4873f25afddc24f1a98741ff62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67c5b627af386610db4c47be738f94ff41cd9b4873f25afddc24f1a98741ff62", kill_on_drop: false }`
[INFO] [stdout] 67c5b627af386610db4c47be738f94ff41cd9b4873f25afddc24f1a98741ff62
