[INFO] cloning repository https://github.com/simsapa/simsapa-dictionary
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simsapa/simsapa-dictionary" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimsapa%2Fsimsapa-dictionary", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimsapa%2Fsimsapa-dictionary'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc1a58bfbfeb15541ba2cf8297862927c6217394
[INFO] documenting simsapa/simsapa-dictionary 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%2Fsimsapa%2Fsimsapa-dictionary" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/simsapa/simsapa-dictionary 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/simsapa/simsapa-dictionary
[INFO] finished tweaking git repo https://github.com/simsapa/simsapa-dictionary
[INFO] tweaked toml for git repo https://github.com/simsapa/simsapa-dictionary written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/simsapa/simsapa-dictionary 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/digitalpalitools/pali-dict-core`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded html2text v0.2.1
[INFO] [stderr]   Downloaded calamine v0.16.2
[INFO] [stderr]   Downloaded html2md v0.2.10
[INFO] [stderr]   Downloaded comrak v0.6.2
[INFO] [stderr]   Downloaded deunicode v1.1.1
[INFO] [stderr]   Downloaded xlsxwriter v0.3.2
[INFO] [stderr]   Downloaded libxlsxwriter-sys v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 4e958b06c375afba77388663b122a463206eca0c4390d1658d8aacd0e9261ade
[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" "4e958b06c375afba77388663b122a463206eca0c4390d1658d8aacd0e9261ade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e958b06c375afba77388663b122a463206eca0c4390d1658d8aacd0e9261ade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e958b06c375afba77388663b122a463206eca0c4390d1658d8aacd0e9261ade", kill_on_drop: false }`
[INFO] [stdout] 4e958b06c375afba77388663b122a463206eca0c4390d1658d8aacd0e9261ade
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] c9ac84dfcc781ca20e19c008ace355ca39feda4a17a405a41a7ad3aafb7454a2
[INFO] running `Command { std: "docker" "start" "-a" "c9ac84dfcc781ca20e19c008ace355ca39feda4a17a405a41a7ad3aafb7454a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking unchecked-index v0.2.2
[INFO] [stderr]     Checking ego-tree v0.6.2
[INFO] [stderr]     Checking entities v1.0.1
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking deunicode v1.1.1
[INFO] [stderr]     Checking kankyo v0.3.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]     Checking string_cache v0.8.1
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking quick-xml v0.19.0
[INFO] [stderr]     Checking codepage v0.1.1
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.5
[INFO] [stderr]     Checking r2d2 v0.8.9
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking comrak v0.6.2
[INFO] [stderr]     Checking handlebars v2.0.4
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]    Compiling libxlsxwriter-sys v1.0.0
[INFO] [stderr]     Checking zip v0.5.9
[INFO] [stderr]     Checking calamine v0.16.2
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking pali_dict_core v0.3.0 (https://github.com/digitalpalitools/pali-dict-core#4c0b1d03)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/pali-dict-core-e182d4ff54950936/4c0b1d0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[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 compile `pali_dict_core` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c9ac84dfcc781ca20e19c008ace355ca39feda4a17a405a41a7ad3aafb7454a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ac84dfcc781ca20e19c008ace355ca39feda4a17a405a41a7ad3aafb7454a2", kill_on_drop: false }`
[INFO] [stdout] c9ac84dfcc781ca20e19c008ace355ca39feda4a17a405a41a7ad3aafb7454a2