[INFO] cloning repository https://github.com/LeCyberDucky/Snipper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LeCyberDucky/Snipper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeCyberDucky%2FSnipper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeCyberDucky%2FSnipper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5333b19afaab5dbf3b3b77cad24dbcbaee6badc0
[INFO] documenting LeCyberDucky/Snipper 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%2FLeCyberDucky%2FSnipper" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LeCyberDucky/Snipper 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/LeCyberDucky/Snipper
[INFO] finished tweaking git repo https://github.com/LeCyberDucky/Snipper
[INFO] tweaked toml for git repo https://github.com/LeCyberDucky/Snipper written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/LeCyberDucky/Snipper 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 anyhow v1.0.43
[INFO] [stderr]   Downloaded bunt v0.2.6
[INFO] [stderr]   Downloaded bunt-macros v0.2.5
[INFO] [stderr]   Downloaded litrs v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 811cc9b3571d897d79abba8b30a03203b4726ee4b2440fc5379b86f5fb0ec79e
[INFO] running `Command { std: "docker" "start" "-a" "811cc9b3571d897d79abba8b30a03203b4726ee4b2440fc5379b86f5fb0ec79e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "811cc9b3571d897d79abba8b30a03203b4726ee4b2440fc5379b86f5fb0ec79e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "811cc9b3571d897d79abba8b30a03203b4726ee4b2440fc5379b86f5fb0ec79e", kill_on_drop: false }`
[INFO] [stdout] 811cc9b3571d897d79abba8b30a03203b4726ee4b2440fc5379b86f5fb0ec79e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] ffe72866237e23ccb7c35d77e333a27c5b9e09633c4a782948dd965e2f36f524
[INFO] running `Command { std: "docker" "start" "-a" "ffe72866237e23ccb7c35d77e333a27c5b9e09633c4a782948dd965e2f36f524", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling litrs v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling bunt-macros v0.2.5
[INFO] [stderr]     Checking bunt v0.2.6
[INFO] [stderr]  Documenting snipper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(bool_to_option)]
[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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(format_args_capture)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `format_args_capture` has been stable since 1.58.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `snipper`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name snipper src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b843e3662528b55d -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-d285cee26cfc4d53.rmeta --extern bunt=/opt/rustwide/target/debug/deps/libbunt-1afbc19ea7d3b057.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-4521b8981504d56d.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-01d9c5dc0d72cf1f.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-aa60abb9fe6cfa5b.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ffe72866237e23ccb7c35d77e333a27c5b9e09633c4a782948dd965e2f36f524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffe72866237e23ccb7c35d77e333a27c5b9e09633c4a782948dd965e2f36f524", kill_on_drop: false }`
[INFO] [stdout] ffe72866237e23ccb7c35d77e333a27c5b9e09633c4a782948dd965e2f36f524