[INFO] cloning repository https://github.com/Edward-0/rust-riscv-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Edward-0/rust-riscv-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdward-0%2Frust-riscv-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdward-0%2Frust-riscv-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae4c274f85a4eb2b7337773b967c2a88f6497efb
[INFO] documenting Edward-0/rust-riscv-playground against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdward-0%2Frust-riscv-playground" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Edward-0/rust-riscv-playground 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-0-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Edward-0/rust-riscv-playground
[INFO] finished tweaking git repo https://github.com/Edward-0/rust-riscv-playground
[INFO] tweaked toml for git repo https://github.com/Edward-0/rust-riscv-playground written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Edward-0/rust-riscv-playground 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 bare-metal v0.2.4
[INFO] [stderr]   Downloaded riscv-rt-macros v0.1.6
[INFO] [stderr]   Downloaded riscv v0.5.6
[INFO] [stderr]   Downloaded riscv-rt v0.6.1
[INFO] [stderr]   Downloaded embedded-hal v0.2.4
[INFO] [stderr]   Downloaded bit_field v0.9.0
[INFO] [stderr]   Downloaded e310x-hal v0.8.3
[INFO] [stderr]   Downloaded e310x v0.6.0
[INFO] [stderr]   Downloaded hifive1 v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e06b6b37986c7d72d827619da3fb4b8223442836bfc6647b2b6f9e56a94fca95
[INFO] running `Command { std: "docker" "start" "-a" "e06b6b37986c7d72d827619da3fb4b8223442836bfc6647b2b6f9e56a94fca95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e06b6b37986c7d72d827619da3fb4b8223442836bfc6647b2b6f9e56a94fca95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e06b6b37986c7d72d827619da3fb4b8223442836bfc6647b2b6f9e56a94fca95", kill_on_drop: false }`
[INFO] [stdout] e06b6b37986c7d72d827619da3fb4b8223442836bfc6647b2b6f9e56a94fca95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e90a0fd01b46acbf34690bb7cfd7c0bdf8dbfa78ed61230862de85a6e2abe8de
[INFO] running `Command { std: "docker" "start" "-a" "e90a0fd01b46acbf34690bb7cfd7c0bdf8dbfa78ed61230862de85a6e2abe8de", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling riscv v0.5.6
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]    Compiling riscv-rt v0.6.1
[INFO] [stderr]    Compiling e310x v0.6.0
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]     Checking nb v0.1.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling hifive1 v0.8.1
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling riscv-rt-macros v0.1.6
[INFO] [stderr]     Checking e310x-hal v0.8.3
[INFO] [stderr]  Documenting rust-riscv-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(alloc_error_handler)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rust-riscv-playground`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rust_riscv_playground 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=8db4a7c87f5bfe5a -L dependency=/opt/rustwide/target/debug/deps --extern e310x_hal=/opt/rustwide/target/debug/deps/libe310x_hal-bc4530e7eff0cff0.rmeta --extern embedded_hal=/opt/rustwide/target/debug/deps/libembedded_hal-ce3b53d146ebfaaa.rmeta --extern hifive1=/opt/rustwide/target/debug/deps/libhifive1-b15c1e7e5f52d2fc.rmeta --extern panic_halt=/opt/rustwide/target/debug/deps/libpanic_halt-6f9c189aae24860d.rmeta --extern riscv=/opt/rustwide/target/debug/deps/libriscv-ae3f107cf633625b.rmeta --extern riscv_rt=/opt/rustwide/target/debug/deps/libriscv_rt-aeefd546dbd364d1.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e90a0fd01b46acbf34690bb7cfd7c0bdf8dbfa78ed61230862de85a6e2abe8de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e90a0fd01b46acbf34690bb7cfd7c0bdf8dbfa78ed61230862de85a6e2abe8de", kill_on_drop: false }`
[INFO] [stdout] e90a0fd01b46acbf34690bb7cfd7c0bdf8dbfa78ed61230862de85a6e2abe8de
