[INFO] cloning repository https://github.com/nixpulvis/oursh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nixpulvis/oursh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnixpulvis%2Foursh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnixpulvis%2Foursh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6c63dae3d64067bc646bda840c79bced9c3d3e9
[INFO] documenting nixpulvis/oursh 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%2Fnixpulvis%2Foursh" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nixpulvis/oursh 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-3/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/nixpulvis/oursh
[INFO] finished tweaking git repo https://github.com/nixpulvis/oursh
[INFO] tweaked toml for git repo https://github.com/nixpulvis/oursh written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/nixpulvis/oursh 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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] bc71b2c7fbf7662010359d0399824585f7d79df837fc807abb0222cbbfaf3ab7
[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" "bc71b2c7fbf7662010359d0399824585f7d79df837fc807abb0222cbbfaf3ab7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc71b2c7fbf7662010359d0399824585f7d79df837fc807abb0222cbbfaf3ab7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc71b2c7fbf7662010359d0399824585f7d79df837fc807abb0222cbbfaf3ab7", kill_on_drop: false }`
[INFO] [stdout] bc71b2c7fbf7662010359d0399824585f7d79df837fc807abb0222cbbfaf3ab7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] bfc47023ef4886fcd8465c7fc8796ce52e773b3d4bc240fc56e701a04903d724
[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" "bfc47023ef4886fcd8465c7fc8796ce52e773b3d4bc240fc56e701a04903d724", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.16
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling lalrpop-util v0.18.1
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking fd-lock v2.0.0
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking ctrlc v3.1.4
[INFO] [stderr]     Checking rustyline v8.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking pwd v1.3.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.18.1
[INFO] [stderr]    Compiling oursh v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting oursh v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:84:1
[INFO] [stdout]    |
[INFO] [stdout] 84 | #![feature(box_syntax, box_patterns, with_options)]
[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 `oursh`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name oursh src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="completion"' --cfg 'feature="default"' --cfg 'feature="history"' --cfg 'feature="raw"' --cfg 'feature="shebang-block"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern ctrlc=/opt/rustwide/target/debug/deps/libctrlc-2892955ddad80120.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-39df95089e973e40.rmeta --extern docopt=/opt/rustwide/target/debug/deps/libdocopt-57385043565bf3b2.rmeta --extern lalrpop_util=/opt/rustwide/target/debug/deps/liblalrpop_util-deec4994b0949c20.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-dcd35ef0f4294062.rmeta --extern pwd=/opt/rustwide/target/debug/deps/libpwd-da8b512e73631b34.rmeta --extern retain_mut=/opt/rustwide/target/debug/deps/libretain_mut-7aec356bd75b9d9c.rmeta --extern rustyline=/opt/rustwide/target/debug/deps/librustyline-2e8f6dbdabe3496d.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-ea04a6e84cf2a21a.rmeta --cap-lints=warn --crate-version 0.4.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bfc47023ef4886fcd8465c7fc8796ce52e773b3d4bc240fc56e701a04903d724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfc47023ef4886fcd8465c7fc8796ce52e773b3d4bc240fc56e701a04903d724", kill_on_drop: false }`
[INFO] [stdout] bfc47023ef4886fcd8465c7fc8796ce52e773b3d4bc240fc56e701a04903d724
