[INFO] cloning repository https://github.com/ktosiek/spnego-proxy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ktosiek/spnego-proxy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fktosiek%2Fspnego-proxy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fktosiek%2Fspnego-proxy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36b42fe94a12385a4c4ccfc4def40a3a272b2c2c
[INFO] documenting ktosiek/spnego-proxy against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fktosiek%2Fspnego-proxy" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ktosiek/spnego-proxy 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 git repo https://github.com/ktosiek/spnego-proxy
[INFO] finished tweaking git repo https://github.com/ktosiek/spnego-proxy
[INFO] tweaked toml for git repo https://github.com/ktosiek/spnego-proxy written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ktosiek/spnego-proxy 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] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[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] 3185506a4e2e6bc2cb56b6febb8d1fce59b6b40995fd6520d7d75ea25b1c5c07
[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" "3185506a4e2e6bc2cb56b6febb8d1fce59b6b40995fd6520d7d75ea25b1c5c07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3185506a4e2e6bc2cb56b6febb8d1fce59b6b40995fd6520d7d75ea25b1c5c07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3185506a4e2e6bc2cb56b6febb8d1fce59b6b40995fd6520d7d75ea25b1c5c07", kill_on_drop: false }`
[INFO] [stdout] 3185506a4e2e6bc2cb56b6febb8d1fce59b6b40995fd6520d7d75ea25b1c5c07
[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] [stdout] 39c2c235b236f7136cd105d66cd20348ad91345d228779bf8ace75597ea0c1f2
[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" "39c2c235b236f7136cd105d66cd20348ad91345d228779bf8ace75597ea0c1f2", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling pkg-config v0.3.13
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling termcolor v0.3.6
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling bindgen v0.37.4
[INFO] [stderr]    Compiling openssl v0.10.11
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking string v0.1.1
[INFO] [stderr]    Compiling native-tls v0.2.1
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling regex-syntax v0.6.1
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]     Checking rand v0.5.4
[INFO] [stderr]    Compiling clang-sys v0.23.0
[INFO] [stderr]     Checking bytes v0.4.8
[INFO] [stderr]    Compiling aho-corasick v0.6.6
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]     Checking crossbeam-epoch v0.4.3
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]     Checking tokio-io v0.1.7
[INFO] [stderr]     Checking http v0.1.7
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tokio-timer v0.2.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.5
[INFO] [stderr]     Checking tokio-reactor v0.1.2
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking chrono v0.4.4
[INFO] [stderr]     Checking tokio-udp v0.1.1
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]     Checking tokio-fs v0.1.2
[INFO] [stderr]     Checking tokio v0.1.7
[INFO] [stderr]     Checking stderrlog v0.4.1
[INFO] [stderr]     Checking h2 v0.1.10
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]    Compiling env_logger v0.5.10
[INFO] [stderr]     Checking structopt v0.2.10
[INFO] [stderr]     Checking hyper v0.12.6
[INFO] [stderr]     Checking hyper-tls v0.3.0
[INFO] [stderr]    Compiling gssapi-sys v0.2.1
[INFO] [stderr]  Documenting spnego-proxy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview, type_ascription, never_type)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview, type_ascription, never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0705.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `spnego-proxy`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name spnego_proxy src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-fdf3061c61a2b6f8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-7ba7a8f88cf1a82c.rmeta --extern gssapi_sys=/opt/rustwide/target/debug/deps/libgssapi_sys-58827c1734402635.rmeta --extern http=/opt/rustwide/target/debug/deps/libhttp-f7639cad4e767879.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-82ab2622b99664d3.rmeta --extern hyper_tls=/opt/rustwide/target/debug/deps/libhyper_tls-8e960b5bd89a5371.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-77fbf2c8125b70b6.rmeta --extern native_tls=/opt/rustwide/target/debug/deps/libnative_tls-a10ccf330cc68772.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-c46c6210e298f96c.rmeta --extern stderrlog=/opt/rustwide/target/debug/deps/libstderrlog-0fc2a80224c06888.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-2a4cff39be8c4725.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-d5aaed60b9d1a79c.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "39c2c235b236f7136cd105d66cd20348ad91345d228779bf8ace75597ea0c1f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39c2c235b236f7136cd105d66cd20348ad91345d228779bf8ace75597ea0c1f2", kill_on_drop: false }`
[INFO] [stdout] 39c2c235b236f7136cd105d66cd20348ad91345d228779bf8ace75597ea0c1f2