[INFO] cloning repository https://github.com/imzacm/crypt-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imzacm/crypt-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimzacm%2Fcrypt-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimzacm%2Fcrypt-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 507d25b0f110c1e00a7ccaab5b79e5d0d02d5b5e
[INFO] documenting imzacm/crypt-client 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%2Fimzacm%2Fcrypt-client" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imzacm/crypt-client 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] started tweaking git repo https://github.com/imzacm/crypt-client
[INFO] finished tweaking git repo https://github.com/imzacm/crypt-client
[INFO] tweaked toml for git repo https://github.com/imzacm/crypt-client written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/imzacm/crypt-client 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 clearscreen v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] e6a82cf3d1d46e5fc17dbee0b1b4d45218de01ee97425a17d531de78cbce689a
[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" "e6a82cf3d1d46e5fc17dbee0b1b4d45218de01ee97425a17d531de78cbce689a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6a82cf3d1d46e5fc17dbee0b1b4d45218de01ee97425a17d531de78cbce689a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a82cf3d1d46e5fc17dbee0b1b4d45218de01ee97425a17d531de78cbce689a", kill_on_drop: false }`
[INFO] [stdout] e6a82cf3d1d46e5fc17dbee0b1b4d45218de01ee97425a17d531de78cbce689a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] 6725c7dc7d058e410f923566dc211f9c10ec6a5fd8e35ef84955debf2eb1421a
[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" "6725c7dc7d058e410f923566dc211f9c10ec6a5fd8e35ef84955debf2eb1421a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling object v0.24.0
[INFO] [stderr]    Compiling bindgen v0.48.1
[INFO] [stderr]     Checking siphasher v0.3.6
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling clang-sys v0.26.4
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking block-modes v0.8.1
[INFO] [stderr]     Checking aes v0.7.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking fd-lock v2.0.0
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking nix v0.22.0
[INFO] [stderr]     Checking rpassword v5.0.1
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking rustyline v8.2.0
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking clearscreen v1.0.6
[INFO] [stderr]     Checking bincode2 v2.0.1
[INFO] [stderr]    Compiling argonautica v0.2.0
[INFO] [stderr]  Documenting crypt-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `crypt-client`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name crypt_client src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="dummy-drivers"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=6d91a335b9ee8f5d -L dependency=/opt/rustwide/target/debug/deps --extern aes=/opt/rustwide/target/debug/deps/libaes-221e9ccd7c076fe2.rmeta --extern argonautica=/opt/rustwide/target/debug/deps/libargonautica-29c595c7d19cd25d.rmeta --extern bincode2=/opt/rustwide/target/debug/deps/libbincode2-dc5089ecfd0f81a5.rmeta --extern block_modes=/opt/rustwide/target/debug/deps/libblock_modes-c478ba402fab0d75.rmeta --extern clearscreen=/opt/rustwide/target/debug/deps/libclearscreen-6cb912830f6b6645.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-13658e784331fe98.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-a8b170ee7309e444.rmeta --extern rpassword=/opt/rustwide/target/debug/deps/librpassword-87ad6dde9b0d56f7.rmeta --extern rustyline=/opt/rustwide/target/debug/deps/librustyline-9a2958507cc27b3d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-dcdeb514280ae4d1.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6725c7dc7d058e410f923566dc211f9c10ec6a5fd8e35ef84955debf2eb1421a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6725c7dc7d058e410f923566dc211f9c10ec6a5fd8e35ef84955debf2eb1421a", kill_on_drop: false }`
[INFO] [stdout] 6725c7dc7d058e410f923566dc211f9c10ec6a5fd8e35ef84955debf2eb1421a