[INFO] cloning repository https://github.com/edosrecki/chip8-interpreter-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edosrecki/chip8-interpreter-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedosrecki%2Fchip8-interpreter-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedosrecki%2Fchip8-interpreter-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ba29a6ac25e57a38eff1a014c73b3c971c17b61
[INFO] documenting edosrecki/chip8-interpreter-rust against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedosrecki%2Fchip8-interpreter-rust" "/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/edosrecki/chip8-interpreter-rust on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edosrecki/chip8-interpreter-rust
[INFO] finished tweaking git repo https://github.com/edosrecki/chip8-interpreter-rust
[INFO] tweaked toml for git repo https://github.com/edosrecki/chip8-interpreter-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/edosrecki/chip8-interpreter-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c52f737acce0c03917dfee825ca8aaa32f6e1705f4ce500fbd047b571dbd09d5
[INFO] running `Command { std: "docker" "start" "-a" "c52f737acce0c03917dfee825ca8aaa32f6e1705f4ce500fbd047b571dbd09d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c52f737acce0c03917dfee825ca8aaa32f6e1705f4ce500fbd047b571dbd09d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c52f737acce0c03917dfee825ca8aaa32f6e1705f4ce500fbd047b571dbd09d5", kill_on_drop: false }`
[INFO] [stdout] c52f737acce0c03917dfee825ca8aaa32f6e1705f4ce500fbd047b571dbd09d5
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2849b8fab2a7b5ddcef69a74515c07a71be1d4be1a982d2282d049a67a492ea0
[INFO] running `Command { std: "docker" "start" "-a" "2849b8fab2a7b5ddcef69a74515c07a71be1d4be1a982d2282d049a67a492ea0", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling sdl2 v0.34.3
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]     Checking c_vec v1.3.3
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking fps_clock v2.0.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling sdl2-sys v0.34.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking env_logger v0.8.1
[INFO] [stderr]  Documenting chip8-interpreter-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[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 `chip8-interpreter-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name chip8_interpreter_rust src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-5b0bf358ae23c963.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-f0d11220f9db15cb.rmeta --extern fps_clock=/opt/rustwide/target/debug/deps/libfps_clock-b9f141631fac019f.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-5e37eee3e84fafab.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-91c13f26229124ab.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-27f06d069fc20788.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3c2c54ab7f08fa89.rmeta --extern sdl2=/opt/rustwide/target/debug/deps/libsdl2-3cebf99c20849565.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2849b8fab2a7b5ddcef69a74515c07a71be1d4be1a982d2282d049a67a492ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2849b8fab2a7b5ddcef69a74515c07a71be1d4be1a982d2282d049a67a492ea0", kill_on_drop: false }`
[INFO] [stdout] 2849b8fab2a7b5ddcef69a74515c07a71be1d4be1a982d2282d049a67a492ea0
