[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] 5a75a89e80a18048e7ba9fce14f5c71723b7f5c0
[INFO] documenting sjm42/coap-server-temp against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjm42%2Fcoap-server-temp" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sjm42/coap-server-temp on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/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-13/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" "+1.54.0" "fetch" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66b457e98e0fe9cbac557008608f0e04168d0a21e496eb25115d1de2c23f64ce
[INFO] running `Command { std: "docker" "start" "-a" "66b457e98e0fe9cbac557008608f0e04168d0a21e496eb25115d1de2c23f64ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66b457e98e0fe9cbac557008608f0e04168d0a21e496eb25115d1de2c23f64ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b457e98e0fe9cbac557008608f0e04168d0a21e496eb25115d1de2c23f64ce", kill_on_drop: false }`
[INFO] [stdout] 66b457e98e0fe9cbac557008608f0e04168d0a21e496eb25115d1de2c23f64ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9caafa1054492d5c6270df94c67577df840cd89ceda3fdfabf592267730d196
[INFO] running `Command { std: "docker" "start" "-a" "a9caafa1054492d5c6270df94c67577df840cd89ceda3fdfabf592267730d196", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling safe-proc-macro2 v1.0.24
[INFO] [stderr]    Compiling safe-lock v0.1.3
[INFO] [stderr]     Checking coap-lite v0.5.0
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling safe-quote v1.0.9
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling safe-regex-compiler v0.2.4
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling safe-regex-macro v0.2.3
[INFO] [stderr]     Checking simplelog v0.10.0
[INFO] [stderr]    Compiling safe-regex v0.2.4
[INFO] [stderr]    Compiling build-data v0.1.3
[INFO] [stderr]    Compiling coap-server-temp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc_macro_roids v0.7.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling influxdb-derives v0.1.1
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]     Checking serde v1.0.127
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking coap v0.11.1
[INFO] [stderr]     Checking hyper v0.14.11
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking influxdb-client v0.1.4
[INFO] [stderr]  Documenting coap-server-temp v0.1.0 (/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(once_cell)]
[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=2018 --crate-type bin --crate-name coap_server_temp 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 chrono=/opt/rustwide/target/debug/deps/libchrono-1dab18fc9d360c99.rmeta --extern coap=/opt/rustwide/target/debug/deps/libcoap-338be6741c8e5bb8.rmeta --extern coap_lite=/opt/rustwide/target/debug/deps/libcoap_lite-50eb834cb4664e9f.rmeta --extern influxdb_client=/opt/rustwide/target/debug/deps/libinfluxdb_client-33563e6d89e0e8b5.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-acd7d23482fe8b54.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f8abb66ffc16068c.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-07537f67e3fa3d99.rmeta --extern simplelog=/opt/rustwide/target/debug/deps/libsimplelog-60dd71e80d1ca2a2.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-8c241be498e6b7be.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-15d58dd625bde8a2.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a9caafa1054492d5c6270df94c67577df840cd89ceda3fdfabf592267730d196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9caafa1054492d5c6270df94c67577df840cd89ceda3fdfabf592267730d196", kill_on_drop: false }`
[INFO] [stdout] a9caafa1054492d5c6270df94c67577df840cd89ceda3fdfabf592267730d196
