[INFO] fetching crate nscope 1.0.0-dev...
[INFO] documenting nscope-1.0.0-dev against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate nscope 1.0.0-dev into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nscope 1.0.0-dev on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nscope 1.0.0-dev
[INFO] finished tweaking crates.io crate nscope 1.0.0-dev
[INFO] tweaked toml for crates.io crate nscope 1.0.0-dev written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate nscope 1.0.0-dev already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e71104e727817fb37fc1e11156af18aa6f13209586ff6f9b40004cc73d17ead
[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" "1e71104e727817fb37fc1e11156af18aa6f13209586ff6f9b40004cc73d17ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e71104e727817fb37fc1e11156af18aa6f13209586ff6f9b40004cc73d17ead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e71104e727817fb37fc1e11156af18aa6f13209586ff6f9b40004cc73d17ead", kill_on_drop: false }`
[INFO] [stdout] 1e71104e727817fb37fc1e11156af18aa6f13209586ff6f9b40004cc73d17ead
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.46.0" "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] 63c137494e24c08a0a45a30429f0ad8d9c5d54cd0899a07733dddadf3992a1a7
[INFO] running `Command { std: "docker" "start" "-a" "63c137494e24c08a0a45a30429f0ad8d9c5d54cd0899a07733dddadf3992a1a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling hidapi v1.2.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling git-version-macro v0.3.4
[INFO] [stderr]     Checking git-version v0.3.4
[INFO] [stderr]  Documenting nscope v1.0.0-dev (/opt/rustwide/workdir)
[INFO] [stdout] error: git describe failed with status 128: fatal: not a git repository (or any parent up to mount point /opt/rustwide)
[INFO] [stdout]  --> src/ver.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let git_description = git_version!(args = ["--always", "--tags", "--dirty"]);
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `nscope`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name nscope src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern git_version=/opt/rustwide/target/debug/deps/libgit_version-5e4ccbead461ba01.rmeta --extern hidapi=/opt/rustwide/target/debug/deps/libhidapi-f84341a6acf1b54c.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-0fcc127676f03763.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "63c137494e24c08a0a45a30429f0ad8d9c5d54cd0899a07733dddadf3992a1a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c137494e24c08a0a45a30429f0ad8d9c5d54cd0899a07733dddadf3992a1a7", kill_on_drop: false }`
[INFO] [stdout] 63c137494e24c08a0a45a30429f0ad8d9c5d54cd0899a07733dddadf3992a1a7