[INFO] fetching crate rmalloc 1.1.0...
[INFO] documenting rmalloc-1.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate rmalloc 1.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rmalloc 1.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate rmalloc 1.1.0
[INFO] finished tweaking crates.io crate rmalloc 1.1.0
[INFO] tweaked toml for crates.io crate rmalloc 1.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate rmalloc 1.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yaxpeax-arch v0.0.4
[INFO] [stderr]   Downloaded yaxpeax-x86 v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70b3e367162efe6b6ef5ab5459bd9c3735ec2fcb5d6f0fa8a36a773a1d12635a
[INFO] running `Command { std: "docker" "start" "-a" "70b3e367162efe6b6ef5ab5459bd9c3735ec2fcb5d6f0fa8a36a773a1d12635a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70b3e367162efe6b6ef5ab5459bd9c3735ec2fcb5d6f0fa8a36a773a1d12635a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b3e367162efe6b6ef5ab5459bd9c3735ec2fcb5d6f0fa8a36a773a1d12635a", kill_on_drop: false }`
[INFO] [stdout] 70b3e367162efe6b6ef5ab5459bd9c3735ec2fcb5d6f0fa8a36a773a1d12635a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d78e408b343caefd1f56650932f956cfb5f001a321ef1f0af21cdcfbdcae6b2c
[INFO] running `Command { std: "docker" "start" "-a" "d78e408b343caefd1f56650932f956cfb5f001a321ef1f0af21cdcfbdcae6b2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking mersenne_twister v1.1.1
[INFO] [stderr]  Documenting rmalloc v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(llvm_asm)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `llvm_asm`
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(llvm_asm)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rmalloc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type cdylib --crate-name rmalloc src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=14c03876340ac307 -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-3b68201430af03ef.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-131c6f753d21aecc.rmeta --extern mersenne_twister=/opt/rustwide/target/debug/deps/libmersenne_twister-fb1244cb858d1e9e.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-339753e1dc31a825.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-f09a9b35e8584951.rmeta --cap-lints=warn --crate-version 1.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d78e408b343caefd1f56650932f956cfb5f001a321ef1f0af21cdcfbdcae6b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d78e408b343caefd1f56650932f956cfb5f001a321ef1f0af21cdcfbdcae6b2c", kill_on_drop: false }`
[INFO] [stdout] d78e408b343caefd1f56650932f956cfb5f001a321ef1f0af21cdcfbdcae6b2c
