[INFO] cloning repository https://github.com/wellbehavedsoftware/rzbackup
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wellbehavedsoftware/rzbackup" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwellbehavedsoftware%2Frzbackup", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwellbehavedsoftware%2Frzbackup'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 064079ed8111dd3b10d6e0c76a0087acb79dd33f
[INFO] documenting wellbehavedsoftware/rzbackup 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%2Fwellbehavedsoftware%2Frzbackup" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wellbehavedsoftware/rzbackup 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/wellbehavedsoftware/rzbackup
[INFO] finished tweaking git repo https://github.com/wellbehavedsoftware/rzbackup
[INFO] tweaked toml for git repo https://github.com/wellbehavedsoftware/rzbackup written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/wellbehavedsoftware/rzbackup 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] error: the lock file /workspace/builds/worker-0/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[INFO] the lockfile is outdated, regenerating it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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 9d0454550e2b2eee94efd43571990934e9ef8f186100c9c5aebf53d1c07e92e9
[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" "9d0454550e2b2eee94efd43571990934e9ef8f186100c9c5aebf53d1c07e92e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d0454550e2b2eee94efd43571990934e9ef8f186100c9c5aebf53d1c07e92e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d0454550e2b2eee94efd43571990934e9ef8f186100c9c5aebf53d1c07e92e9", kill_on_drop: false }`
[INFO] [stdout] 9d0454550e2b2eee94efd43571990934e9ef8f186100c9c5aebf53d1c07e92e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 58e64da76cc42f31b8607b7c8aa4bad839d09ee7c03974c177679e06c6459d47
[INFO] running `Command { std: "docker" "start" "-a" "58e64da76cc42f31b8607b7c8aa4bad839d09ee7c03974c177679e06c6459d47", kill_on_drop: false }`
[INFO] [stderr]    Compiling protobuf v1.7.5
[INFO] [stderr]    Compiling rzbackup v3.4.0-alpha1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking minilzo-sys v0.1.0
[INFO] [stderr]     Checking errno v0.2.6
[INFO] [stderr]     Checking output v0.6.2
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> build.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             io_error.description ())
[INFO] [stdout]    |                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking minilzo v0.2.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting rzbackup v3.4.0-alpha1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.91s
[INFO] running `Command { std: "docker" "inspect" "58e64da76cc42f31b8607b7c8aa4bad839d09ee7c03974c177679e06c6459d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58e64da76cc42f31b8607b7c8aa4bad839d09ee7c03974c177679e06c6459d47", kill_on_drop: false }`
[INFO] [stdout] 58e64da76cc42f31b8607b7c8aa4bad839d09ee7c03974c177679e06c6459d47