[INFO] fetching crate dntk 2.2.1...
[INFO] documenting dntk-2.2.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate dntk 2.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate dntk 2.2.1 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 dntk 2.2.1
[INFO] finished tweaking crates.io crate dntk 2.2.1
[INFO] tweaked toml for crates.io crate dntk 2.2.1 written to /workspace/builds/worker-7/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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 63994e5217f5365cb7f50487840ad706c66991be25dc1ac981a844f6a128aeef
[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" "63994e5217f5365cb7f50487840ad706c66991be25dc1ac981a844f6a128aeef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63994e5217f5365cb7f50487840ad706c66991be25dc1ac981a844f6a128aeef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63994e5217f5365cb7f50487840ad706c66991be25dc1ac981a844f6a128aeef", kill_on_drop: false }`
[INFO] [stdout] 63994e5217f5365cb7f50487840ad706c66991be25dc1ac981a844f6a128aeef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9f2455e101d22ec10a927f9dfca9b7a06e47cfaa33027671875167f1eb9b0de4
[INFO] running `Command { std: "docker" "start" "-a" "9f2455e101d22ec10a927f9dfca9b7a06e47cfaa33027671875167f1eb9b0de4", kill_on_drop: false }`
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking rgb v0.8.25
[INFO] [stderr]     Checking cgmath v0.16.1
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]  Documenting dntk v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: environment variable `LINUX_TERM_LIB` not defined
[INFO] [stdout]  --> src/term/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | include!(env!("LINUX_TERM_LIB"));
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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] [stderr] error: Could not document `dntk`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dntk 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 ansi_term=/opt/rustwide/target/debug/deps/libansi_term-2b8e18b803626c5c.rmeta --extern assert_cmd=/opt/rustwide/target/debug/deps/libassert_cmd-da4440ecfcca90a9.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-e29de9b70681a471.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-d8de5d56e70a343c.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-b01e5f49cd1b74e8.rmeta --extern scopeguard=/opt/rustwide/target/debug/deps/libscopeguard-809bce1a80ef1e2f.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-4faefe19b62df87d.rmeta --extern subprocess=/opt/rustwide/target/debug/deps/libsubprocess-29261c19dae0ed7e.rmeta --extern winapi=/opt/rustwide/target/debug/deps/libwinapi-fdd5c3623a859792.rmeta --extern winconsole=/opt/rustwide/target/debug/deps/libwinconsole-191fe6fb3ce445b1.rmeta --cap-lints=warn --crate-version 2.2.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "9f2455e101d22ec10a927f9dfca9b7a06e47cfaa33027671875167f1eb9b0de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f2455e101d22ec10a927f9dfca9b7a06e47cfaa33027671875167f1eb9b0de4", kill_on_drop: false }`
[INFO] [stdout] 9f2455e101d22ec10a927f9dfca9b7a06e47cfaa33027671875167f1eb9b0de4