[INFO] cloning repository https://github.com/tomc1998/rs-proc-gen-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomc1998/rs-proc-gen-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomc1998%2Frs-proc-gen-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomc1998%2Frs-proc-gen-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cda6dfbc593366a9f339dbaa9ca484f8d97326d2
[INFO] documenting tomc1998/rs-proc-gen-experiment 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%2Ftomc1998%2Frs-proc-gen-experiment" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomc1998/rs-proc-gen-experiment 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/tomc1998/rs-proc-gen-experiment
[INFO] finished tweaking git repo https://github.com/tomc1998/rs-proc-gen-experiment
[INFO] tweaked toml for git repo https://github.com/tomc1998/rs-proc-gen-experiment written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/tomc1998/rs-proc-gen-experiment 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 }`
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[INFO] [stderr]   Downloaded downcast-rs v1.0.3
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[INFO] [stderr]   Downloaded syn v0.14.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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 }`
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[INFO] running `Command { std: "docker" "start" "-a" "2fa9eb909776352aa1281df818ec65bda58bd035da5b85e0e756bfac1d592bae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fa9eb909776352aa1281df818ec65bda58bd035da5b85e0e756bfac1d592bae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fa9eb909776352aa1281df818ec65bda58bd035da5b85e0e756bfac1d592bae", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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 }`
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[INFO] running `Command { std: "docker" "start" "-a" "deef441176c472b4f11a0499eac93e4ffc2593d101664d05ed8d3730808116e8", kill_on_drop: false }`
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[INFO] [stderr]     Checking cfg-if v0.1.4
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[INFO] [stderr]     Checking failure v0.1.1
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[INFO] [stderr]     Checking specs v0.12.0
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[INFO] [stderr]     Checking gfx_window_glutin v0.24.0
[INFO] [stderr]  Documenting proc-gen-experiment v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/comp/coll.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 (vec.nor() * (combined_r - dis))
[INFO] [stdout]    |                 ^                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 38 -                 (vec.nor() * (combined_r - dis))
[INFO] [stdout] 38 +                 vec.nor() * (combined_r - dis)
[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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `proc-gen-experiment`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name proc_gen_experiment src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0fe67348098dfe76 -L dependency=/opt/rustwide/target/debug/deps --extern cgmath=/opt/rustwide/target/debug/deps/libcgmath-60edbe009de2af74.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-64874e51f7e0b6b9.rmeta --extern failure_derive=/opt/rustwide/target/debug/deps/libfailure_derive-f6b8f9d05908cb2b.so --extern gfx=/opt/rustwide/target/debug/deps/libgfx-7f62b70d7775d886.rmeta --extern gfx_device_gl=/opt/rustwide/target/debug/deps/libgfx_device_gl-347394ab0d128a5f.rmeta --extern gfx_gl=/opt/rustwide/target/debug/deps/libgfx_gl-7c9514528495bd25.rmeta --extern gfx_window_glutin=/opt/rustwide/target/debug/deps/libgfx_window_glutin-2ccfad86a4968fcf.rmeta --extern glutin=/opt/rustwide/target/debug/deps/libglutin-3ad7c659a6440a2a.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-1c9937e90d99c07b.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b4b59f0b36b2aeaf.rmeta --extern num_integer=/opt/rustwide/target/debug/deps/libnum_integer-f070a02be32d94c2.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2391292bf6db297a.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-bcaae3d3799fdd84.rmeta --extern rusttype=/opt/rustwide/target/debug/deps/librusttype-6c794fbcb394fd77.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b15733f8828d3983.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-b7876137a99d9072.so --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-c49b9acc74411dfa.rmeta --extern specs=/opt/rustwide/target/debug/deps/libspecs-2dc10bb940e12b97.rmeta --extern specs_derive=/opt/rustwide/target/debug/deps/libspecs_derive-7eb4d44d6ffa44e1.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "deef441176c472b4f11a0499eac93e4ffc2593d101664d05ed8d3730808116e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deef441176c472b4f11a0499eac93e4ffc2593d101664d05ed8d3730808116e8", kill_on_drop: false }`
[INFO] [stdout] deef441176c472b4f11a0499eac93e4ffc2593d101664d05ed8d3730808116e8