[INFO] fetching crate gene-seq-intersections 0.3.1...
[INFO] documenting gene-seq-intersections-0.3.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate gene-seq-intersections 0.3.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate gene-seq-intersections 0.3.1 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 crates.io crate gene-seq-intersections 0.3.1
[INFO] finished tweaking crates.io crate gene-seq-intersections 0.3.1
[INFO] tweaked toml for crates.io crate gene-seq-intersections 0.3.1 written to /workspace/builds/worker-12/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 jobsteal v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] ce8dba0a3baa1908f22e3f9ad60eda9d380b928775b60e9a311c6ce6fba3e5cc
[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" "ce8dba0a3baa1908f22e3f9ad60eda9d380b928775b60e9a311c6ce6fba3e5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce8dba0a3baa1908f22e3f9ad60eda9d380b928775b60e9a311c6ce6fba3e5cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce8dba0a3baa1908f22e3f9ad60eda9d380b928775b60e9a311c6ce6fba3e5cc", kill_on_drop: false }`
[INFO] [stdout] ce8dba0a3baa1908f22e3f9ad60eda9d380b928775b60e9a311c6ce6fba3e5cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 64024bf00e6b38a4cce062d650bd6eecd9adebab87464ad51b14225b543db5c9
[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" "64024bf00e6b38a4cce062d650bd6eecd9adebab87464ad51b14225b543db5c9", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking jobsteal v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]  Documenting gene-seq-intersections v0.3.1 (/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(integer_atomics)]
[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 `gene-seq-intersections`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name intersections 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 clap=/opt/rustwide/target/debug/deps/libclap-1c9c629b2fe91003.rmeta --extern csv=/opt/rustwide/target/debug/deps/libcsv-8a7d3dcb393efd76.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-b10f69453a8e09d7.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-0ff73feb7e2c43f7.rmeta --extern jobsteal=/opt/rustwide/target/debug/deps/libjobsteal-052e91477dd20810.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-39376325fae1b39f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ec5e695d7e4b5284.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-e14ca5de376ec3cc.so --extern twox_hash=/opt/rustwide/target/debug/deps/libtwox_hash-051a30e25cc19fb3.rmeta --extern typed_arena=/opt/rustwide/target/debug/deps/libtyped_arena-e90670943b6933e1.rmeta --cap-lints=warn --crate-version 0.3.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "64024bf00e6b38a4cce062d650bd6eecd9adebab87464ad51b14225b543db5c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64024bf00e6b38a4cce062d650bd6eecd9adebab87464ad51b14225b543db5c9", kill_on_drop: false }`
[INFO] [stdout] 64024bf00e6b38a4cce062d650bd6eecd9adebab87464ad51b14225b543db5c9