[INFO] cloning repository https://github.com/christophebiocca/tokio-process-deadlock-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/christophebiocca/tokio-process-deadlock-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristophebiocca%2Ftokio-process-deadlock-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristophebiocca%2Ftokio-process-deadlock-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5c77dcebe02ffea375d98ef42042752e0544d8a
[INFO] documenting christophebiocca/tokio-process-deadlock-example 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%2Fchristophebiocca%2Ftokio-process-deadlock-example" "/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/christophebiocca/tokio-process-deadlock-example 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/christophebiocca/tokio-process-deadlock-example
[INFO] finished tweaking git repo https://github.com/christophebiocca/tokio-process-deadlock-example
[INFO] tweaked toml for git repo https://github.com/christophebiocca/tokio-process-deadlock-example written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/christophebiocca/tokio-process-deadlock-example 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 tokio-signal v0.2.2
[INFO] [stderr]   Downloaded tokio-reactor v0.1.3
[INFO] [stderr]   Downloaded log v0.4.4
[INFO] [stderr]   Downloaded tokio-executor v0.1.3
[INFO] [stderr]   Downloaded tokio-process v0.2.2
[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" "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] [stdout] c9259ca5ab1da89ed0d8e0b025a84391fa764939d0aa10281b6b54b3400f126f
[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" "c9259ca5ab1da89ed0d8e0b025a84391fa764939d0aa10281b6b54b3400f126f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9259ca5ab1da89ed0d8e0b025a84391fa764939d0aa10281b6b54b3400f126f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9259ca5ab1da89ed0d8e0b025a84391fa764939d0aa10281b6b54b3400f126f", kill_on_drop: false }`
[INFO] [stdout] c9259ca5ab1da89ed0d8e0b025a84391fa764939d0aa10281b6b54b3400f126f
[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" "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] 08d45830201a392524c7b29f34f91202579b6b3e3e898b0faff3d89c196cad94
[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" "08d45830201a392524c7b29f34f91202579b6b3e3e898b0faff3d89c196cad94", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking tokio-executor v0.1.3
[INFO] [stderr]     Checking log v0.4.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]     Checking tokio-io v0.1.7
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]     Checking tokio-reactor v0.1.3
[INFO] [stderr]     Checking tokio-signal v0.2.2
[INFO] [stderr]     Checking tokio-process v0.2.2
[INFO] [stderr]  Documenting tokio-process-deadlock-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.76s
[INFO] running `Command { std: "docker" "inspect" "08d45830201a392524c7b29f34f91202579b6b3e3e898b0faff3d89c196cad94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08d45830201a392524c7b29f34f91202579b6b3e3e898b0faff3d89c196cad94", kill_on_drop: false }`
[INFO] [stdout] 08d45830201a392524c7b29f34f91202579b6b3e3e898b0faff3d89c196cad94