[INFO] crate industrial-io 0.2.0 is already in cache
[INFO] documenting industrial-io-0.2.0 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate industrial-io 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate industrial-io 0.2.0 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate industrial-io 0.2.0
[INFO] finished tweaking crates.io crate industrial-io 0.2.0
[INFO] tweaked toml for crates.io crate industrial-io 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate industrial-io 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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-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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ab484963e8de4773d52fb08beca3b0a7d3a978eabc62450335719ac69fde087
[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" "5ab484963e8de4773d52fb08beca3b0a7d3a978eabc62450335719ac69fde087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ab484963e8de4773d52fb08beca3b0a7d3a978eabc62450335719ac69fde087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ab484963e8de4773d52fb08beca3b0a7d3a978eabc62450335719ac69fde087", kill_on_drop: false }`
[INFO] [stdout] 5ab484963e8de4773d52fb08beca3b0a7d3a978eabc62450335719ac69fde087
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c60af4fe0dd6d05c4a15ca9cdf7a2693f76cd2271ee3eb7d67e595dc07cb079
[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" "9c60af4fe0dd6d05c4a15ca9cdf7a2693f76cd2271ee3eb7d67e595dc07cb079", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling libiio-sys v0.2.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking industrial-io v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting industrial-io v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | / error_chain! {
[INFO] [stdout] 14 | |     foreign_links {
[INFO] [stdout] 15 | |         Io(::std::io::Error);
[INFO] [stdout] 16 | |         NulError(::std::ffi::NulError);
[INFO] [stdout] 17 | |         Nix(::nix::Error);
[INFO] [stdout] 18 | |     }
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | / error_chain! {
[INFO] [stdout] 14 | |     foreign_links {
[INFO] [stdout] 15 | |         Io(::std::io::Error);
[INFO] [stdout] 16 | |         NulError(::std::ffi::NulError);
[INFO] [stdout] 17 | |         Nix(::nix::Error);
[INFO] [stdout] 18 | |     }
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.60s
[INFO] running `Command { std: "docker" "inspect" "9c60af4fe0dd6d05c4a15ca9cdf7a2693f76cd2271ee3eb7d67e595dc07cb079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c60af4fe0dd6d05c4a15ca9cdf7a2693f76cd2271ee3eb7d67e595dc07cb079", kill_on_drop: false }`
[INFO] [stdout] 9c60af4fe0dd6d05c4a15ca9cdf7a2693f76cd2271ee3eb7d67e595dc07cb079