[INFO] fetching crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a...
[INFO] documenting compiler-builtins-snapshot-0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] finished tweaking crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a
[INFO] tweaked toml for crates.io crate compiler-builtins-snapshot 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-cfg v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcb0a9942a2fc830701b29d1dc868aa1cf84f9af28dd19201c39eec3808ef382
[INFO] running `Command { std: "docker" "start" "-a" "bcb0a9942a2fc830701b29d1dc868aa1cf84f9af28dd19201c39eec3808ef382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcb0a9942a2fc830701b29d1dc868aa1cf84f9af28dd19201c39eec3808ef382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcb0a9942a2fc830701b29d1dc868aa1cf84f9af28dd19201c39eec3808ef382", kill_on_drop: false }`
[INFO] [stdout] bcb0a9942a2fc830701b29d1dc868aa1cf84f9af28dd19201c39eec3808ef382
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58068da75deed43ac93159815e5e21b17b8f42435f937099c632516de37dba13
[INFO] running `Command { std: "docker" "start" "-a" "58068da75deed43ac93159815e5e21b17b8f42435f937099c632516de37dba13", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling rustc-cfg v0.3.0
[INFO] [stderr]    Compiling compiler-builtins-snapshot v0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated type alias `gcc::Config`: gcc::Config has been renamed to gcc::Build
[INFO] [stdout]   --> build.rs:66:29
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let cfg = &mut gcc::Config::new();
[INFO] [stdout]    |                             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `gcc::Build::new`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]   --> build.rs:66:37
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let cfg = &mut gcc::Config::new();
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting compiler-builtins-snapshot v0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(compiler_builtins)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(naked_functions)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(staged_api)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `compiler_builtins` is internal to the compiler or standard library
[INFO] [stdout]   --> src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(compiler_builtins)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:31
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![cfg_attr(not(stage0), deny(warnings))]
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(internal_features)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `staged_api` is internal to the compiler or standard library
[INFO] [stdout]   --> src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(staged_api)]
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 2 warnings 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 `compiler-builtins-snapshot`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type lib --crate-name compiler_builtins_snapshot src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="compiler-builtins"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7e835256ba178e39 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.20170127+764557f0b669bb0e28817c5ae70c9d718685e35a` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "58068da75deed43ac93159815e5e21b17b8f42435f937099c632516de37dba13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58068da75deed43ac93159815e5e21b17b8f42435f937099c632516de37dba13", kill_on_drop: false }`
[INFO] [stdout] 58068da75deed43ac93159815e5e21b17b8f42435f937099c632516de37dba13
