[INFO] cloning repository https://github.com/jsancio/synthetic-mesos-scheduler-trace-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsancio/synthetic-mesos-scheduler-trace-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsancio%2Fsynthetic-mesos-scheduler-trace-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsancio%2Fsynthetic-mesos-scheduler-trace-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ecd8703a8aed0ac476280411aa9ef726ada9efc3
[INFO] documenting jsancio/synthetic-mesos-scheduler-trace-generator 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%2Fjsancio%2Fsynthetic-mesos-scheduler-trace-generator" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsancio/synthetic-mesos-scheduler-trace-generator 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/jsancio/synthetic-mesos-scheduler-trace-generator
[INFO] finished tweaking git repo https://github.com/jsancio/synthetic-mesos-scheduler-trace-generator
[INFO] tweaked toml for git repo https://github.com/jsancio/synthetic-mesos-scheduler-trace-generator written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jsancio/synthetic-mesos-scheduler-trace-generator 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]     Updating git repository `https://github.com/stepancheg/rust-protobuf.git`
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/stepancheg/rust-protobuf.git`
[INFO] [stderr]     Updating git submodule `https://github.com/google/protobuf`
[INFO] [stderr]     Updating git submodule `https://github.com/google/benchmark.git`
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 5aeab666a1e3ed741e3a0d5ed99731e7db3dd06a3addec2de1299f9bcedca292
[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" "5aeab666a1e3ed741e3a0d5ed99731e7db3dd06a3addec2de1299f9bcedca292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5aeab666a1e3ed741e3a0d5ed99731e7db3dd06a3addec2de1299f9bcedca292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aeab666a1e3ed741e3a0d5ed99731e7db3dd06a3addec2de1299f9bcedca292", kill_on_drop: false }`
[INFO] [stdout] 5aeab666a1e3ed741e3a0d5ed99731e7db3dd06a3addec2de1299f9bcedca292
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 21aa78f63b97ec2e5ced8fafae3393719ee657f0fa6d785e07aa75d8ead2711c
[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" "21aa78f63b97ec2e5ced8fafae3393719ee657f0fa6d785e07aa75d8ead2711c", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling protobuf v3.0.0-pre (https://github.com/stepancheg/rust-protobuf.git#fd75c6d8)
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]    Compiling docopt_macros v0.6.88
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/docopt_macros-0.6.88/src/macro.rs:4:30
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(plugin_registrar, quote, rustc_private)]
[INFO] [stdout]   |                              ^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/docopt_macros-0.6.88/src/macro.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `docopt_macros`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "21aa78f63b97ec2e5ced8fafae3393719ee657f0fa6d785e07aa75d8ead2711c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21aa78f63b97ec2e5ced8fafae3393719ee657f0fa6d785e07aa75d8ead2711c", kill_on_drop: false }`
[INFO] [stdout] 21aa78f63b97ec2e5ced8fafae3393719ee657f0fa6d785e07aa75d8ead2711c