[INFO] cloning repository https://github.com/blorente/rust-course
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blorente/rust-course" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblorente%2Frust-course", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblorente%2Frust-course'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f2b0a97f0a15ec03b915470c211a2dc34565e89
[INFO] documenting blorente/rust-course 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%2Fblorente%2Frust-course" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blorente/rust-course 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/blorente/rust-course
[INFO] finished tweaking git repo https://github.com/blorente/rust-course
[INFO] tweaked toml for git repo https://github.com/blorente/rust-course written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/blorente/rust-course 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memoffset v0.5.1
[INFO] [stderr]   Downloaded crossbeam-epoch v0.7.2
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.5
[INFO] [stderr]   Downloaded openssl v0.10.24
[INFO] [stderr]   Downloaded flate2 v1.0.11
[INFO] [stderr]   Downloaded publicsuffix v1.5.3
[INFO] [stderr]   Downloaded smallvec v0.6.10
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.15
[INFO] [stderr]   Downloaded tokio-sync v0.1.6
[INFO] [stderr]   Downloaded want v0.2.0
[INFO] [stderr]   Downloaded unicase v2.5.1
[INFO] [stderr]   Downloaded arrayvec v0.4.11
[INFO] [stderr]   Downloaded tokio v0.1.22
[INFO] [stderr]   Downloaded futures v0.1.29
[INFO] [stderr]   Downloaded backtrace v0.3.37
[INFO] [stderr]   Downloaded h2 v0.1.26
[INFO] [stderr]   Downloaded encoding_rs v0.8.20
[INFO] [stderr]   Downloaded vcpkg v0.2.7
[INFO] [stderr]   Downloaded reqwest v0.9.20
[INFO] [stderr]   Downloaded serde_json v1.0.40
[INFO] [stderr]   Downloaded tokio-executor v0.1.8
[INFO] [stderr]   Downloaded serde_urlencoded v0.5.5
[INFO] [stderr]   Downloaded structopt v0.3.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.4
[INFO] [stderr]   Downloaded miniz_oxide v0.3.2
[INFO] [stderr]   Downloaded hyper v0.12.35
[INFO] [stderr]   Downloaded http v0.1.18
[INFO] [stderr]   Downloaded http-body v0.1.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.49
[INFO] [stderr]   Downloaded pkg-config v0.3.16
[INFO] [stderr]   Downloaded c2-chacha v0.2.2
[INFO] [stderr]   Downloaded getrandom v0.1.12
[INFO] [stderr]   Downloaded mio v0.6.19
[INFO] [stderr]   Downloaded structopt-derive v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] d9bd291e4bfb96ffb1213201bc73e9cfec376b55958ad574d158d28079b09fee
[INFO] running `Command { std: "docker" "start" "-a" "d9bd291e4bfb96ffb1213201bc73e9cfec376b55958ad574d158d28079b09fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9bd291e4bfb96ffb1213201bc73e9cfec376b55958ad574d158d28079b09fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9bd291e4bfb96ffb1213201bc73e9cfec376b55958ad574d158d28079b09fee", kill_on_drop: false }`
[INFO] [stdout] d9bd291e4bfb96ffb1213201bc73e9cfec376b55958ad574d158d28079b09fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 790a702ee2023b236d49141665e9b71537c4d5b183a99d18ed22584057ae3e9d
[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" "790a702ee2023b236d49141665e9b71537c4d5b183a99d18ed22584057ae3e9d", kill_on_drop: false }`
[INFO] [stderr]     Checking encoding_rs v0.8.20
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking flate2 v1.0.11
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking structopt v0.3.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]  Documenting minicurl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.07s
[INFO] running `Command { std: "docker" "inspect" "790a702ee2023b236d49141665e9b71537c4d5b183a99d18ed22584057ae3e9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "790a702ee2023b236d49141665e9b71537c4d5b183a99d18ed22584057ae3e9d", kill_on_drop: false }`
[INFO] [stdout] 790a702ee2023b236d49141665e9b71537c4d5b183a99d18ed22584057ae3e9d