[INFO] cloning repository https://github.com/desbma/firstname-chooser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/desbma/firstname-chooser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdesbma%2Ffirstname-chooser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdesbma%2Ffirstname-chooser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6244ed9fa884527b08ee56013ae351e22270ffd1
[INFO] documenting desbma/firstname-chooser against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdesbma%2Ffirstname-chooser" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/desbma/firstname-chooser on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/desbma/firstname-chooser
[INFO] finished tweaking git repo https://github.com/desbma/firstname-chooser
[INFO] tweaked toml for git repo https://github.com/desbma/firstname-chooser written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/desbma/firstname-chooser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-compression v0.3.8
[INFO] [stderr]   Downloaded arg_enum_proc_macro v0.3.1
[INFO] [stderr]   Downloaded simple_logger v1.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0f4de08e06ce1a75ad7bb8ac3ba9622e388f2ac0b4a9c65e559fe0252b2167e
[INFO] running `Command { std: "docker" "start" "-a" "f0f4de08e06ce1a75ad7bb8ac3ba9622e388f2ac0b4a9c65e559fe0252b2167e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0f4de08e06ce1a75ad7bb8ac3ba9622e388f2ac0b4a9c65e559fe0252b2167e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0f4de08e06ce1a75ad7bb8ac3ba9622e388f2ac0b4a9c65e559fe0252b2167e", kill_on_drop: false }`
[INFO] [stdout] f0f4de08e06ce1a75ad7bb8ac3ba9622e388f2ac0b4a9c65e559fe0252b2167e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0c00495ef8068cb107d8db28f4d9c69dbea53d9c174c5e82f87731a944e63ed
[INFO] running `Command { std: "docker" "start" "-a" "b0c00495ef8068cb107d8db28f4d9c69dbea53d9c174c5e82f87731a944e63ed", kill_on_drop: false }`
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[INFO] [stderr]    Compiling anyhow v1.0.42
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[INFO] [stderr]     Checking unidecode v0.3.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking dialoguer v0.8.0
[INFO] [stderr]     Checking indicatif v0.15.0
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[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.1
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking hyper v0.14.11
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[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking decorum v0.3.1
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]  Documenting firstname-chooser 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `firstname-chooser`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name firstname_chooser src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=e74e40b8012ffded -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-ca0e90b27a93d9e9.rmeta --extern arg_enum_proc_macro=/opt/rustwide/target/debug/deps/libarg_enum_proc_macro-8831a87f546f024b.so --extern console=/opt/rustwide/target/debug/deps/libconsole-9064c09e83f74f75.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-7090cbde93e6acc9.rmeta --extern csv=/opt/rustwide/target/debug/deps/libcsv-9f1cc6207ead6b08.rmeta --extern decorum=/opt/rustwide/target/debug/deps/libdecorum-25b8ba93c3c0acfe.rmeta --extern dialoguer=/opt/rustwide/target/debug/deps/libdialoguer-18101d630b605956.rmeta --extern heck=/opt/rustwide/target/debug/deps/libheck-6f68f580670344df.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-1f44dcc3b1b9da7b.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-19b426cc124a3bc1.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-07ea9a2360da302a.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-d2239adc466e660f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-af059eaec7db0455.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-ef4e87ad1ad287c4.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-e10b56a2ff55bd86.rmeta --extern simple_logger=/opt/rustwide/target/debug/deps/libsimple_logger-e20910f2a7e71be7.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-52522235504233bf.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-3084dc530b1410ae.rmeta --extern unidecode=/opt/rustwide/target/debug/deps/libunidecode-c893d9fdf06e4eba.rmeta --extern xdg=/opt/rustwide/target/debug/deps/libxdg-b364dfdc2b2b84ee.rmeta --extern zip=/opt/rustwide/target/debug/deps/libzip-562c6b3363dee9bb.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b0c00495ef8068cb107d8db28f4d9c69dbea53d9c174c5e82f87731a944e63ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0c00495ef8068cb107d8db28f4d9c69dbea53d9c174c5e82f87731a944e63ed", kill_on_drop: false }`
[INFO] [stdout] b0c00495ef8068cb107d8db28f4d9c69dbea53d9c174c5e82f87731a944e63ed
