[INFO] cloning repository https://github.com/ray33ee/gud
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ray33ee/gud" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2Fgud", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fray33ee%2Fgud'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52e4e2026cedfd80118c972dbd6421ceb78bfdb0
[INFO] documenting ray33ee/gud 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%2Fray33ee%2Fgud" "/workspace/builds/worker-30/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-30/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ray33ee/gud 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/ray33ee/gud
[INFO] finished tweaking git repo https://github.com/ray33ee/gud
[INFO] tweaked toml for git repo https://github.com/ray33ee/gud written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate git repo https://github.com/ray33ee/gud 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]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.24
[INFO] [stderr]   Downloaded redox_syscall v0.2.6
[INFO] [stderr]   Downloaded diffy v0.2.1
[INFO] [stderr]   Downloaded bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]   Downloaded thiserror-impl v1.0.24
[INFO] [stderr]   Downloaded zip v0.5.12
[INFO] [stderr]   Downloaded syn v1.0.70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] b933a069058c4c82cfa60d5ca7d0b4b75220d122ac10c4aced8d659924ae201f
[INFO] running `Command { std: "docker" "start" "-a" "b933a069058c4c82cfa60d5ca7d0b4b75220d122ac10c4aced8d659924ae201f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b933a069058c4c82cfa60d5ca7d0b4b75220d122ac10c4aced8d659924ae201f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b933a069058c4c82cfa60d5ca7d0b4b75220d122ac10c4aced8d659924ae201f", kill_on_drop: false }`
[INFO] [stdout] b933a069058c4c82cfa60d5ca7d0b4b75220d122ac10c4aced8d659924ae201f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 3ab1f51790923642a8ab5e69a75c356b631e20d73dd96dd4a64b444bddd70d2d
[INFO] running `Command { std: "docker" "start" "-a" "3ab1f51790923642a8ab5e69a75c356b631e20d73dd96dd4a64b444bddd70d2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking diffy v0.2.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking lzma-rs v0.1.3
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking tar v0.4.33
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking zip v0.5.12
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]  Documenting gud v0.1.4 (/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(seek_stream_len)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(iter_advance_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[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 `gud`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name gud src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=10c903597ab30701 -L dependency=/opt/rustwide/target/debug/deps --extern bincode=/opt/rustwide/target/debug/deps/libbincode-fdb3057ea68e7e38.rmeta --extern diffy=/opt/rustwide/target/debug/deps/libdiffy-dc39b44df18cba20.rmeta --extern lzma_rs=/opt/rustwide/target/debug/deps/liblzma_rs-8444c6ff6b75d2d4.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-e16c3fcfb7b9ac7c.rmeta --extern tar=/opt/rustwide/target/debug/deps/libtar-a32b5f2d242ce92a.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-aa60abb9fe6cfa5b.rmeta --extern zip=/opt/rustwide/target/debug/deps/libzip-9d3839429cda6588.rmeta --cap-lints=warn --crate-version 0.1.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3ab1f51790923642a8ab5e69a75c356b631e20d73dd96dd4a64b444bddd70d2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ab1f51790923642a8ab5e69a75c356b631e20d73dd96dd4a64b444bddd70d2d", kill_on_drop: false }`
[INFO] [stdout] 3ab1f51790923642a8ab5e69a75c356b631e20d73dd96dd4a64b444bddd70d2d