[INFO] fetching crate libftdi1-sys 1.0.0-alpha3...
[INFO] documenting libftdi1-sys-1.0.0-alpha3 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate libftdi1-sys 1.0.0-alpha3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libftdi1-sys 1.0.0-alpha3 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libftdi1-sys 1.0.0-alpha3
[INFO] finished tweaking crates.io crate libftdi1-sys 1.0.0-alpha3
[INFO] tweaked toml for crates.io crate libftdi1-sys 1.0.0-alpha3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate libftdi1-sys 1.0.0-alpha3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", 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] 66ced7da02264330adf1d6b156c09d44bf83b539e8d685d9276a98c8ccd09fbb
[INFO] running `Command { std: "docker" "start" "-a" "66ced7da02264330adf1d6b156c09d44bf83b539e8d685d9276a98c8ccd09fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66ced7da02264330adf1d6b156c09d44bf83b539e8d685d9276a98c8ccd09fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66ced7da02264330adf1d6b156c09d44bf83b539e8d685d9276a98c8ccd09fbb", kill_on_drop: false }`
[INFO] [stdout] 66ced7da02264330adf1d6b156c09d44bf83b539e8d685d9276a98c8ccd09fbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f328a8ec8613bf7c2f0c892d5bc61df77b473860649cd00a985c61f579fdb39d
[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" "f328a8ec8613bf7c2f0c892d5bc61df77b473860649cd00a985c61f579fdb39d", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.7
[INFO] [stderr]    Compiling libftdi1-sys v1.0.0-alpha3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `header_path`
[INFO] [stdout]    --> build.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |         fn header_path() -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `link_and_get_include_paths`
[INFO] [stdout]    --> build.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |         fn link_and_get_include_paths() -> Vec<PathBuf> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: Config for libftdi1 not found, falling back to default search path: `"pkg-config" "--libs" "--cflags" "libftdi1 >= 1.4"` did not exit successfully: exit code: 1
[INFO] [stderr]  Documenting libftdi1-sys v1.0.0-alpha3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `Command { std: "docker" "inspect" "f328a8ec8613bf7c2f0c892d5bc61df77b473860649cd00a985c61f579fdb39d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f328a8ec8613bf7c2f0c892d5bc61df77b473860649cd00a985c61f579fdb39d", kill_on_drop: false }`
[INFO] [stdout] f328a8ec8613bf7c2f0c892d5bc61df77b473860649cd00a985c61f579fdb39d