[INFO] updating cached repository https://github.com/cipriancraciun/journald-exporter [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 99a98730ccf2ad9228e06f982255ff335d80b852 [INFO] documenting cipriancraciun/journald-exporter against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcipriancraciun%2Fjournald-exporter" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cipriancraciun/journald-exporter on toolchain 394e1b40d264aa6928811919c1124fa248e7d802 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/cipriancraciun/journald-exporter [INFO] finished tweaking git repo https://github.com/cipriancraciun/journald-exporter [INFO] tweaked toml for git repo https://github.com/cipriancraciun/journald-exporter written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/cipriancraciun/journald-exporter already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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" "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" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] f0dad32ff11db2c3711e014905e51c0b5db6a79b9b12b10ca2ae4d2d2b87a74b [INFO] running `Command { std: "docker" "start" "-a" "f0dad32ff11db2c3711e014905e51c0b5db6a79b9b12b10ca2ae4d2d2b87a74b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f0dad32ff11db2c3711e014905e51c0b5db6a79b9b12b10ca2ae4d2d2b87a74b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0dad32ff11db2c3711e014905e51c0b5db6a79b9b12b10ca2ae4d2d2b87a74b", kill_on_drop: false }` [INFO] [stdout] f0dad32ff11db2c3711e014905e51c0b5db6a79b9b12b10ca2ae4d2d2b87a74b [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" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] f99a17a3d5b63fdedc9f252345dad596c5c975c65fb43ab739c84fbbc0059b27 [INFO] running `Command { std: "docker" "start" "-a" "f99a17a3d5b63fdedc9f252345dad596c5c975c65fb43ab739c84fbbc0059b27", kill_on_drop: false }` [INFO] [stderr] warning: output filename collision. [INFO] [stderr] The bin target `journald-exporter` in package `journald-exporter v0.0.0 (/opt/rustwide/workdir)` has the same output filename as the lib target `journald_exporter` in package `journald-exporter v0.0.0 (/opt/rustwide/workdir)`. [INFO] [stderr] Colliding filename is: /opt/rustwide/target/doc/journald_exporter/index.html [INFO] [stderr] The output filenames should be unique. [INFO] [stderr] This is a known bug where multiple crates with the same name use [INFO] [stderr] the same path; see . [INFO] [stderr] If this looks unexpected, it may be a bug in Cargo. Please file a bug report at [INFO] [stderr] https://github.com/rust-lang/cargo/issues/ with as much information as you [INFO] [stderr] can provide. [INFO] [stderr] cargo 1.46.0-nightly (c26576f9a 2020-06-23) running on `x86_64-unknown-linux-gnu` target `x86_64-unknown-linux-gnu` [INFO] [stderr] First unit: Unit { pkg: Package { id: PackageId { name: "journald-exporter", version: "0.0.0", source: "/opt/rustwide/workdir" }, ..: ".." }, target: TargetInner { name: "journald-exporter", doc: true, ..: with_path("/opt/rustwide/workdir/./sources/bin.rs", Edition2018) }, profile: Profile { name: "doc", debuginfo: Some(2), debug_assertions: true, overflow_checks: true, ..: default() }, kind: Host, mode: Doc { deps: false }, features: ["default"] } [INFO] [stderr] Second unit: Unit { pkg: Package { id: PackageId { name: "journald-exporter", version: "0.0.0", source: "/opt/rustwide/workdir" }, ..: ".." }, target: TargetInner { ..: lib_target("journald_exporter", ["lib"], "/opt/rustwide/workdir/./sources/lib.rs", Edition2018) }, profile: Profile { name: "doc", debuginfo: Some(2), debug_assertions: true, overflow_checks: true, ..: default() }, kind: Host, mode: Doc { deps: false }, features: ["default"] } [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling libsystemd-sys v0.2.2 [INFO] [stderr] Checking journald-exporter v0.0.0 (/opt/rustwide/workdir) [INFO] [stderr] Documenting journald-exporter v0.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> sources/lib.rs:44:19 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn main () -> (Result<(), io::Error>) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> sources/lib.rs:113:95 [INFO] [stdout] | [INFO] [stdout] 113 | fn sd_read_field (_journal : *mut sd::sd_journal, _key : &FieldKey, _buffer : &mut String) -> (Result) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> sources/lib.rs:158:43 [INFO] [stdout] | [INFO] [stdout] 158 | fn sd_outcome (_outcome : libc::c_int) -> (Result) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> sources/lib.rs:44:19 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn main () -> (Result<(), io::Error>) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> sources/lib.rs:113:95 [INFO] [stdout] | [INFO] [stdout] 113 | fn sd_read_field (_journal : *mut sd::sd_journal, _key : &FieldKey, _buffer : &mut String) -> (Result) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> sources/lib.rs:158:43 [INFO] [stdout] | [INFO] [stdout] 158 | fn sd_outcome (_outcome : libc::c_int) -> (Result) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.73s [INFO] running `Command { std: "docker" "inspect" "f99a17a3d5b63fdedc9f252345dad596c5c975c65fb43ab739c84fbbc0059b27", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f99a17a3d5b63fdedc9f252345dad596c5c975c65fb43ab739c84fbbc0059b27", kill_on_drop: false }` [INFO] [stdout] f99a17a3d5b63fdedc9f252345dad596c5c975c65fb43ab739c84fbbc0059b27