[INFO] cloning repository https://github.com/TrueD1m4/white_noise_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TrueD1m4/white_noise_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrueD1m4%2Fwhite_noise_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrueD1m4%2Fwhite_noise_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c396b0c53877e1109122867afae3dea97239525
[INFO] documenting TrueD1m4/white_noise_generator 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%2FTrueD1m4%2Fwhite_noise_generator" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TrueD1m4/white_noise_generator 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/TrueD1m4/white_noise_generator
[INFO] finished tweaking git repo https://github.com/TrueD1m4/white_noise_generator
[INFO] tweaked toml for git repo https://github.com/TrueD1m4/white_noise_generator written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/TrueD1m4/white_noise_generator 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-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 25b35378e21bc3cdf5ac5cbdea198db351990d9d2929592080e0e45789ca2c8b
[INFO] running `Command { std: "docker" "start" "-a" "25b35378e21bc3cdf5ac5cbdea198db351990d9d2929592080e0e45789ca2c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25b35378e21bc3cdf5ac5cbdea198db351990d9d2929592080e0e45789ca2c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25b35378e21bc3cdf5ac5cbdea198db351990d9d2929592080e0e45789ca2c8b", kill_on_drop: false }`
[INFO] [stdout] 25b35378e21bc3cdf5ac5cbdea198db351990d9d2929592080e0e45789ca2c8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 9539fe5bb260eae1bc48df532c15fb3a91dd5ca5d0f6808d5f78bced62f75ba6
[INFO] running `Command { std: "docker" "start" "-a" "9539fe5bb260eae1bc48df532c15fb3a91dd5ca5d0f6808d5f78bced62f75ba6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling sdl2 v0.35.1
[INFO] [stderr]     Checking random v0.12.2
[INFO] [stderr]    Compiling sdl2-sys v0.35.1
[INFO] [stderr]  Documenting white_noise_generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0254]: the name `sdl2` is defined multiple times
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate sdl2;
[INFO] [stdout]   | ------------------ previous import of the extern crate `sdl2` here
[INFO] [stdout] 2 | 
[INFO] [stdout] 3 | use sdl2;
[INFO] [stdout]   |     ^^^^ `sdl2` reimported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `sdl2` must be defined only once in the type namespace of this module
[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 E0254`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `white_noise_generator`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name white_noise_generator src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=e9bd34f3849365bd -L dependency=/opt/rustwide/target/debug/deps --extern random=/opt/rustwide/target/debug/deps/librandom-b3ecdd35ab056143.rmeta --extern sdl2=/opt/rustwide/target/debug/deps/libsdl2-5c4f2fe82daf2451.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9539fe5bb260eae1bc48df532c15fb3a91dd5ca5d0f6808d5f78bced62f75ba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9539fe5bb260eae1bc48df532c15fb3a91dd5ca5d0f6808d5f78bced62f75ba6", kill_on_drop: false }`
[INFO] [stdout] 9539fe5bb260eae1bc48df532c15fb3a91dd5ca5d0f6808d5f78bced62f75ba6