[INFO] cloning repository https://github.com/mgattozzi/ysh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mgattozzi/ysh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Fysh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Fysh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35164f177db123aea1c6d115b6eb2af73af2608f
[INFO] documenting mgattozzi/ysh against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmgattozzi%2Fysh" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mgattozzi/ysh on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mgattozzi/ysh
[INFO] finished tweaking git repo https://github.com/mgattozzi/ysh
[INFO] tweaked toml for git repo https://github.com/mgattozzi/ysh written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/mgattozzi/ysh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04e2a33b437411b08494b7b671198c5bba28c1f3da1d1a81486b109e6168470a
[INFO] running `Command { std: "docker" "start" "-a" "04e2a33b437411b08494b7b671198c5bba28c1f3da1d1a81486b109e6168470a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04e2a33b437411b08494b7b671198c5bba28c1f3da1d1a81486b109e6168470a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e2a33b437411b08494b7b671198c5bba28c1f3da1d1a81486b109e6168470a", kill_on_drop: false }`
[INFO] [stdout] 04e2a33b437411b08494b7b671198c5bba28c1f3da1d1a81486b109e6168470a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d72d4f8e061a6ca0948912c11c588611d2df7a550891d0661a304a6edac9a8fd
[INFO] running `Command { std: "docker" "start" "-a" "d72d4f8e061a6ca0948912c11c588611d2df7a550891d0661a304a6edac9a8fd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling winapi v0.3.5
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking termios v0.3.0
[INFO] [stderr]     Checking memchr v2.0.2
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking nom v4.0.0 (https://github.com/myrrlyn/nom?branch=2018-edition#f6b927b0)
[INFO] [stderr]     Checking crossterm v0.4.1 (https://github.com/hawkw/crossterm.git?branch=fix-write#3cb236d0)
[INFO] [stderr]     Checking shared_child v0.3.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking os_pipe v0.6.2
[INFO] [stderr]     Checking duct v0.11.0
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]  Documenting ysh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(crate_visibility_modifier)]
[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 `ysh`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name ysh src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=04d1e89aa4d33c08 -L dependency=/opt/rustwide/target/debug/deps --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-c65f912d87397ebc.rmeta --extern duct=/opt/rustwide/target/debug/deps/libduct-1bb1fcc0f8ba0677.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-0818c47548e5cbfb.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-140985ae3eda5f8a.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-eea3849bf67c62f1.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-f178f193b5311580.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d72d4f8e061a6ca0948912c11c588611d2df7a550891d0661a304a6edac9a8fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d72d4f8e061a6ca0948912c11c588611d2df7a550891d0661a304a6edac9a8fd", kill_on_drop: false }`
[INFO] [stdout] d72d4f8e061a6ca0948912c11c588611d2df7a550891d0661a304a6edac9a8fd