[INFO] cloning repository https://github.com/liuchong/cargo-x
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liuchong/cargo-x" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuchong%2Fcargo-x", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuchong%2Fcargo-x'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9b4f82820653ed4f21b8842bbc4bfd800fd8d17
[INFO] documenting liuchong/cargo-x against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliuchong%2Fcargo-x" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/liuchong/cargo-x 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 git repo https://github.com/liuchong/cargo-x
[INFO] finished tweaking git repo https://github.com/liuchong/cargo-x
[INFO] tweaked toml for git repo https://github.com/liuchong/cargo-x written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/liuchong/cargo-x already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e8204b5e2b0640eb9c17de1dbc32a043f8dbe4253a748788502a7c0f5b031bc4
[INFO] running `Command { std: "docker" "start" "-a" "e8204b5e2b0640eb9c17de1dbc32a043f8dbe4253a748788502a7c0f5b031bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8204b5e2b0640eb9c17de1dbc32a043f8dbe4253a748788502a7c0f5b031bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8204b5e2b0640eb9c17de1dbc32a043f8dbe4253a748788502a7c0f5b031bc4", kill_on_drop: false }`
[INFO] [stdout] e8204b5e2b0640eb9c17de1dbc32a043f8dbe4253a748788502a7c0f5b031bc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] dd9b066c2df640934325595615a86dee3a967aa29b39ba771ce94a4b1669906e
[INFO] running `Command { std: "docker" "start" "-a" "dd9b066c2df640934325595615a86dee3a967aa29b39ba771ce94a4b1669906e", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `cargo-x` in package `cargo-x v0.3.6 (/opt/rustwide/workdir)` has the same output filename as the lib target `cargo_x` in package `cargo-x v0.3.6 (/opt/rustwide/workdir)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/doc/cargo_x/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 <https://github.com/rust-lang/cargo/issues/6313>.
[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 1.47.0-beta (51b66125b 2020-08-19) running on `x86_64-unknown-linux-gnu` target `x86_64-unknown-linux-gnu`
[INFO] [stderr] First unit: Unit { pkg: Package { id: PackageId { name: "cargo-x", version: "0.3.6", source: "/opt/rustwide/workdir" }, ..: ".." }, target: TargetInner { name: "cargo-x", doc: true, ..: with_path("/opt/rustwide/workdir/src/bin/cargo-x.rs", Edition2018) }, profile: Profile { name: "doc", debuginfo: Some(2), debug_assertions: true, overflow_checks: true, ..: default() }, kind: Host, mode: Doc { deps: false }, features: [] }
[INFO] [stderr] Second unit: Unit { pkg: Package { id: PackageId { name: "cargo-x", version: "0.3.6", source: "/opt/rustwide/workdir" }, ..: ".." }, target: TargetInner { ..: lib_target("cargo_x", ["lib"], "/opt/rustwide/workdir/src/lib.rs", Edition2018) }, profile: Profile { name: "doc", debuginfo: Some(2), debug_assertions: true, overflow_checks: true, ..: default() }, kind: Host, mode: Doc { deps: false }, features: [] }
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking cargo-x v0.3.6 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting cargo-x v0.3.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.00s
[INFO] running `Command { std: "docker" "inspect" "dd9b066c2df640934325595615a86dee3a967aa29b39ba771ce94a4b1669906e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd9b066c2df640934325595615a86dee3a967aa29b39ba771ce94a4b1669906e", kill_on_drop: false }`
[INFO] [stdout] dd9b066c2df640934325595615a86dee3a967aa29b39ba771ce94a4b1669906e