[INFO] cloning repository https://github.com/TatriX/feel-it-still
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TatriX/feel-it-still" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTatriX%2Ffeel-it-still", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTatriX%2Ffeel-it-still'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ef24a2b812a178a6a90b610674c8bde7f8b3b33
[INFO] documenting TatriX/feel-it-still 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%2FTatriX%2Ffeel-it-still" "/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/TatriX/feel-it-still 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/TatriX/feel-it-still
[INFO] finished tweaking git repo https://github.com/TatriX/feel-it-still
[INFO] tweaked toml for git repo https://github.com/TatriX/feel-it-still written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/TatriX/feel-it-still 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] 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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9412d87981fc582848b9a5677178969260af49fed3e9aa9ff4d1b538c5c468b5
[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" "9412d87981fc582848b9a5677178969260af49fed3e9aa9ff4d1b538c5c468b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9412d87981fc582848b9a5677178969260af49fed3e9aa9ff4d1b538c5c468b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9412d87981fc582848b9a5677178969260af49fed3e9aa9ff4d1b538c5c468b5", kill_on_drop: false }`
[INFO] [stdout] 9412d87981fc582848b9a5677178969260af49fed3e9aa9ff4d1b538c5c468b5
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c493858db105c426fd3c0c24fe0b3a349cc5defc47f31d27e4d9a0fd4773f56
[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" "0c493858db105c426fd3c0c24fe0b3a349cc5defc47f31d27e4d9a0fd4773f56", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking elapsed v0.1.2
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.4.1
[INFO] [stderr]     Checking log v0.4.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.1.6
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking futures-cpupool v0.1.7
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking tokio-io v0.1.4
[INFO] [stderr]     Checking mio v0.6.11
[INFO] [stderr]     Checking tokio-core v0.1.11
[INFO] [stderr]     Checking stderrlog v0.2.3
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking structopt v0.1.6
[INFO] [stderr]     Checking feel-it-still v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting feel-it-still v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/client.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait)]
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `feel-it-still`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name client src/bin/client.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-8148b3c9ce3924d5.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-45d2e74e5eb307b3.rmeta --extern elapsed=/opt/rustwide/target/debug/deps/libelapsed-32973f87b31cd661.rmeta --extern feel_it_still=/opt/rustwide/target/debug/deps/libfeel_it_still-5600bde2d4c8e11e.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-55154188e7f80348.rmeta --extern futures_cpupool=/opt/rustwide/target/debug/deps/libfutures_cpupool-2353f9d228b50ce3.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-222611933f4801e1.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-12b9df4ec5b3b5bb.rmeta --extern stderrlog=/opt/rustwide/target/debug/deps/libstderrlog-de84ef6d984c225d.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-a14cf9b2394c314e.rmeta --extern structopt_derive=/opt/rustwide/target/debug/deps/libstructopt_derive-23bf07dd3df8eed9.so --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-5f43d2198915921d.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-abe4d0d196edc839.rmeta --extern tokio_proto=/opt/rustwide/target/debug/deps/libtokio_proto-d2b37ebbba1eab2a.rmeta --extern tokio_service=/opt/rustwide/target/debug/deps/libtokio_service-066bf44b157b31f6.rmeta --extern tokio_timer=/opt/rustwide/target/debug/deps/libtokio_timer-b3ccad08df63b9f5.rmeta --cap-lints=warn` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0c493858db105c426fd3c0c24fe0b3a349cc5defc47f31d27e4d9a0fd4773f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c493858db105c426fd3c0c24fe0b3a349cc5defc47f31d27e4d9a0fd4773f56", kill_on_drop: false }`
[INFO] [stdout] 0c493858db105c426fd3c0c24fe0b3a349cc5defc47f31d27e4d9a0fd4773f56