[INFO] cloning repository https://github.com/sjm42/coap-server-temp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sjm42/coap-server-temp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjm42%2Fcoap-server-temp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjm42%2Fcoap-server-temp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2474043dc79b564d23a264b7b00fefe462e3c2a2
[INFO] documenting sjm42/coap-server-temp against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjm42%2Fcoap-server-temp" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sjm42/coap-server-temp on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/sjm42/coap-server-temp
[INFO] finished tweaking git repo https://github.com/sjm42/coap-server-temp
[INFO] tweaked toml for git repo https://github.com/sjm42/coap-server-temp written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sjm42/coap-server-temp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc_macro_roids v0.7.0
[INFO] [stderr]   Downloaded influxdb-client v0.1.4
[INFO] [stderr]   Downloaded influxdb-derives v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3274fc1c6cd8a62022c5fcf90c33403610a5be575bb4b57e4ac3e83512f43df
[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" "c3274fc1c6cd8a62022c5fcf90c33403610a5be575bb4b57e4ac3e83512f43df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3274fc1c6cd8a62022c5fcf90c33403610a5be575bb4b57e4ac3e83512f43df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3274fc1c6cd8a62022c5fcf90c33403610a5be575bb4b57e4ac3e83512f43df", kill_on_drop: false }`
[INFO] [stdout] c3274fc1c6cd8a62022c5fcf90c33403610a5be575bb4b57e4ac3e83512f43df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] b076ccbafa50fa1cd34064681c0b13e67ca3181e3ba75584569b7c3891fc0f65
[INFO] running `Command { std: "docker" "start" "-a" "b076ccbafa50fa1cd34064681c0b13e67ca3181e3ba75584569b7c3891fc0f65", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling safe-proc-macro2 v1.0.36
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling safe-lock v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking coap-lite v0.7.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking http v0.2.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking log v0.4.17
[INFO] [stderr]     Checking encoding_rs v0.8.31
[INFO] [stderr]     Checking lock_api v0.4.7
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling proc_macro_roids v0.7.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]    Compiling influxdb-derives v0.1.1
[INFO] [stderr]    Compiling safe-quote v1.0.15
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling safe-regex-compiler v0.2.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]    Compiling safe-regex-macro v0.2.5
[INFO] [stderr]    Compiling safe-regex v0.2.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling build-data v0.1.3
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]    Compiling coap-server-temp v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking tokio-util v0.7.2
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking coap v0.11.3
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.19
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]     Checking influxdb-client v0.1.4
[INFO] [stderr]  Documenting coap-server-temp v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(async_closure)]
[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 `coap-server-temp`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name coap_server_temp src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ba0a0b8d955c90d8 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-a2ad8fa07e0781ab.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-8e8c375549eee8f9.rmeta --extern coap=/opt/rustwide/target/debug/deps/libcoap-fa19172648712830.rmeta --extern coap_lite=/opt/rustwide/target/debug/deps/libcoap_lite-ba033f8556516248.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-cc12aa476892f795.rmeta --extern influxdb_client=/opt/rustwide/target/debug/deps/libinfluxdb_client-e9d250d6221aabb0.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-4c2b941844e2fcbb.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-684b828d42ecdbdf.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-d43a200b368ef451.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-76396dfbf6adb328.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b076ccbafa50fa1cd34064681c0b13e67ca3181e3ba75584569b7c3891fc0f65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b076ccbafa50fa1cd34064681c0b13e67ca3181e3ba75584569b7c3891fc0f65", kill_on_drop: false }`
[INFO] [stdout] b076ccbafa50fa1cd34064681c0b13e67ca3181e3ba75584569b7c3891fc0f65