[INFO] updating cached repository https://github.com/tomafro/flashlight
[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] e7529d89eb9d97841151555e04a68763e7d1b0c0
[INFO] documenting tomafro/flashlight against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomafro%2Fflashlight" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomafro/flashlight 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/tomafro/flashlight
[INFO] finished tweaking git repo https://github.com/tomafro/flashlight
[INFO] tweaked toml for git repo https://github.com/tomafro/flashlight written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tomafro/flashlight 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] e3c6563993030f3f70b1079fba17d0c27eb99e014957ed32de1dca8bfa4107df
[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" "e3c6563993030f3f70b1079fba17d0c27eb99e014957ed32de1dca8bfa4107df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3c6563993030f3f70b1079fba17d0c27eb99e014957ed32de1dca8bfa4107df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c6563993030f3f70b1079fba17d0c27eb99e014957ed32de1dca8bfa4107df", kill_on_drop: false }`
[INFO] [stdout] e3c6563993030f3f70b1079fba17d0c27eb99e014957ed32de1dca8bfa4107df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 2a4a05a44f8b2cac04dcb4927961271618a1213e4891eab46c01516f8f0641eb
[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" "2a4a05a44f8b2cac04dcb4927961271618a1213e4891eab46c01516f8f0641eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling unindent v0.1.2
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling proc-macro-hack v0.4.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking isatty v0.1.6
[INFO] [stderr]    Compiling syn v0.12.14
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking serde_json v1.0.13
[INFO] [stderr]    Compiling indoc-impl v0.2.3
[INFO] [stderr]    Compiling serde_derive_internals v0.22.0
[INFO] [stderr]     Checking indoc v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.34
[INFO] [stderr]     Checking docopt v0.8.3
[INFO] [stderr]  Documenting flashlight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.41s
[INFO] running `Command { std: "docker" "inspect" "2a4a05a44f8b2cac04dcb4927961271618a1213e4891eab46c01516f8f0641eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a4a05a44f8b2cac04dcb4927961271618a1213e4891eab46c01516f8f0641eb", kill_on_drop: false }`
[INFO] [stdout] 2a4a05a44f8b2cac04dcb4927961271618a1213e4891eab46c01516f8f0641eb