[INFO] cloning repository https://github.com/BenoitZugmeyer/git-branches-overview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BenoitZugmeyer/git-branches-overview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenoitZugmeyer%2Fgit-branches-overview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenoitZugmeyer%2Fgit-branches-overview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1caa93b1fcb9bd4ce943025bb23f0251e73dd650
[INFO] documenting BenoitZugmeyer/git-branches-overview against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenoitZugmeyer%2Fgit-branches-overview" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BenoitZugmeyer/git-branches-overview on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BenoitZugmeyer/git-branches-overview
[INFO] finished tweaking git repo https://github.com/BenoitZugmeyer/git-branches-overview
[INFO] tweaked toml for git repo https://github.com/BenoitZugmeyer/git-branches-overview written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/BenoitZugmeyer/git-branches-overview already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded curl-sys v0.4.15
[INFO] [stderr]   Downloaded libgit2-sys v0.7.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76b91fa1daba41e265c8a8cd661231514ec7c6435edff1a20a447f9de85321bc
[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" "76b91fa1daba41e265c8a8cd661231514ec7c6435edff1a20a447f9de85321bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76b91fa1daba41e265c8a8cd661231514ec7c6435edff1a20a447f9de85321bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76b91fa1daba41e265c8a8cd661231514ec7c6435edff1a20a447f9de85321bc", kill_on_drop: false }`
[INFO] [stdout] 76b91fa1daba41e265c8a8cd661231514ec7c6435edff1a20a447f9de85321bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1fd62d47a1ac6f12dab1128236e106596e166aa247bf235d9ee662254bac87d
[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" "d1fd62d47a1ac6f12dab1128236e106596e166aa247bf235d9ee662254bac87d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking encode_unicode v0.3.5
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.15
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.7.10
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking openssl-sys v0.9.39
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.4
[INFO] [stderr]     Checking csv v1.0.2
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking git2 v0.7.5
[INFO] [stderr]  Documenting git-branches-overview v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.32s
[INFO] running `Command { std: "docker" "inspect" "d1fd62d47a1ac6f12dab1128236e106596e166aa247bf235d9ee662254bac87d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1fd62d47a1ac6f12dab1128236e106596e166aa247bf235d9ee662254bac87d", kill_on_drop: false }`
[INFO] [stdout] d1fd62d47a1ac6f12dab1128236e106596e166aa247bf235d9ee662254bac87d