[INFO] fetching crate unicom-serial 0.2.0...
[INFO] documenting unicom-serial-0.2.0 against nightly for scrape-examples
[INFO] extracting crate unicom-serial 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate unicom-serial 0.2.0 on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unicom-serial 0.2.0
[INFO] finished tweaking crates.io crate unicom-serial 0.2.0
[INFO] tweaked toml for crates.io crate unicom-serial 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicom v0.2.0
[INFO] [stderr]   Downloaded tokio-serial v5.4.4
[INFO] [stderr]   Downloaded mio-serial v5.0.3
[INFO] [stderr]   Downloaded libudev v0.3.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8ff1d361dcf64224dc45b44ab111026f677deed17390297de3013ed4a7f0353
[INFO] running `Command { std: "docker" "start" "-a" "c8ff1d361dcf64224dc45b44ab111026f677deed17390297de3013ed4a7f0353", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8ff1d361dcf64224dc45b44ab111026f677deed17390297de3013ed4a7f0353", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8ff1d361dcf64224dc45b44ab111026f677deed17390297de3013ed4a7f0353", kill_on_drop: false }`
[INFO] [stdout] c8ff1d361dcf64224dc45b44ab111026f677deed17390297de3013ed4a7f0353
[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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6e27d939dea230aa4fd2f6fd7658899df08aab1b65e956a3922b5a7c08fb434
[INFO] running `Command { std: "docker" "start" "-a" "f6e27d939dea230aa4fd2f6fd7658899df08aab1b65e956a3922b5a7c08fb434", kill_on_drop: false }`
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking unicom v0.2.0
[INFO] [stdout] error: Either of features should be selected: futures, tokio, async-std
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unicom-0.2.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | compile_error!("Either of features should be selected: futures, tokio, async-std");
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unicom` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f6e27d939dea230aa4fd2f6fd7658899df08aab1b65e956a3922b5a7c08fb434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6e27d939dea230aa4fd2f6fd7658899df08aab1b65e956a3922b5a7c08fb434", kill_on_drop: false }`
[INFO] [stdout] f6e27d939dea230aa4fd2f6fd7658899df08aab1b65e956a3922b5a7c08fb434