[INFO] cloning repository https://github.com/threecgreen/cpp-rust-cpp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/threecgreen/cpp-rust-cpp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthreecgreen%2Fcpp-rust-cpp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthreecgreen%2Fcpp-rust-cpp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64fa83280d9dd56a4f85f94df3d3e898e4e2cee7
[INFO] documenting threecgreen/cpp-rust-cpp against try#6ee483316d2e4581572121d60a955affb2032eb3+cargoflags=-Zrustdoc-scrape-examples for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthreecgreen%2Fcpp-rust-cpp" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/threecgreen/cpp-rust-cpp on toolchain 6ee483316d2e4581572121d60a955affb2032eb3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/threecgreen/cpp-rust-cpp
[INFO] finished tweaking git repo https://github.com/threecgreen/cpp-rust-cpp
[INFO] tweaked toml for git repo https://github.com/threecgreen/cpp-rust-cpp written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/threecgreen/cpp-rust-cpp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee6d89af91fb138ea727b19368abcbf77a13eb2f4499834b9656701a79e25610
[INFO] running `Command { std: "docker" "start" "-a" "ee6d89af91fb138ea727b19368abcbf77a13eb2f4499834b9656701a79e25610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee6d89af91fb138ea727b19368abcbf77a13eb2f4499834b9656701a79e25610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee6d89af91fb138ea727b19368abcbf77a13eb2f4499834b9656701a79e25610", kill_on_drop: false }`
[INFO] [stdout] ee6d89af91fb138ea727b19368abcbf77a13eb2f4499834b9656701a79e25610
[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" "+6ee483316d2e4581572121d60a955affb2032eb3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json" "-Zrustdoc-scrape-examples", kill_on_drop: false }`
[INFO] [stdout] 0306dcecc71ffd5260e78ee580141f7f52a9ae5aab4285c30aba33683621f582
[INFO] running `Command { std: "docker" "start" "-a" "0306dcecc71ffd5260e78ee580141f7f52a9ae5aab4285c30aba33683621f582", kill_on_drop: false }`
[INFO] [stderr] warning: The package `impl_lib` provides no linkable target. The compiler might raise an error while compiling `impl_lib`. Consider adding 'dylib' or 'rlib' to key `crate-type` in `impl_lib`'s Cargo.toml. This warning might turn into a hard error in the future.
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling cbindgen v0.13.1
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling bindgen v0.53.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling impl-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Scraping impl-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting impl-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.54s
[INFO] running `Command { std: "docker" "inspect" "0306dcecc71ffd5260e78ee580141f7f52a9ae5aab4285c30aba33683621f582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0306dcecc71ffd5260e78ee580141f7f52a9ae5aab4285c30aba33683621f582", kill_on_drop: false }`
[INFO] [stdout] 0306dcecc71ffd5260e78ee580141f7f52a9ae5aab4285c30aba33683621f582
[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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "+6ee483316d2e4581572121d60a955affb2032eb3" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json" "-Zrustdoc-scrape-examples", kill_on_drop: false }`
[INFO] [stdout] 08bdd31abb4c032b94027855c9499a53afbbd6ae7e4addb56e49956faa60906b
[INFO] running `Command { std: "docker" "start" "-a" "08bdd31abb4c032b94027855c9499a53afbbd6ae7e4addb56e49956faa60906b", kill_on_drop: false }`
[INFO] [stderr] warning: The package `impl_lib` provides no linkable target. The compiler might raise an error while compiling `impl_lib`. Consider adding 'dylib' or 'rlib' to key `crate-type` in `impl_lib`'s Cargo.toml. This warning might turn into a hard error in the future.
[INFO] [stderr]    Compiling impl-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Scraping impl-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting impl-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "08bdd31abb4c032b94027855c9499a53afbbd6ae7e4addb56e49956faa60906b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08bdd31abb4c032b94027855c9499a53afbbd6ae7e4addb56e49956faa60906b", kill_on_drop: false }`
[INFO] [stdout] 08bdd31abb4c032b94027855c9499a53afbbd6ae7e4addb56e49956faa60906b