[INFO] cloning repository https://github.com/yuoo655/basic_rt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuoo655/basic_rt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuoo655%2Fbasic_rt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuoo655%2Fbasic_rt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8960a203b47baa131532cb1664252320099687b1
[INFO] documenting yuoo655/basic_rt 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%2Fyuoo655%2Fbasic_rt" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuoo655/basic_rt 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] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] removed /workspace/builds/worker-0/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/yuoo655/basic_rt
[INFO] finished tweaking git repo https://github.com/yuoo655/basic_rt
[INFO] tweaked toml for git repo https://github.com/yuoo655/basic_rt written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/yuoo655/basic_rt 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 }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded woke v0.0.2
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] [stderr]   Downloaded buddy_system_allocator v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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 }`
[INFO] [stdout] 2c6c875d897bd660af3aebd42d511e164f8997173376537376f7f938a95522d4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2c6c875d897bd660af3aebd42d511e164f8997173376537376f7f938a95522d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c6c875d897bd660af3aebd42d511e164f8997173376537376f7f938a95522d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c6c875d897bd660af3aebd42d511e164f8997173376537376f7f938a95522d4", kill_on_drop: false }`
[INFO] [stdout] 2c6c875d897bd660af3aebd42d511e164f8997173376537376f7f938a95522d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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 }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d5a611f03bba9ba70a8e639c0e1c390a545a259c7721e2db35addf2e8a9844a9
[INFO] running `Command { std: "docker" "start" "-a" "d5a611f03bba9ba70a8e639c0e1c390a545a259c7721e2db35addf2e8a9844a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]     Checking futures-sink v0.3.18
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking spin v0.7.1
[INFO] [stderr]     Checking futures-io v0.3.18
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking woke v0.0.2
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking buddy_system_allocator v0.6.0
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking futures v0.3.18
[INFO] [stderr]  Documenting basic_rt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]   --> src/thread/context.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         llvm_asm!(include_str!("switch.asm") :::: "volatile");
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `llvm_asm` in this scope
[INFO] [stdout]  --> src/syscall.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         llvm_asm!("ecall"
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(llvm_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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(linkage)]
[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:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(alloc_error_handler)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `basic_rt`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name basic_rt src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d130985195d1f62d -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-22d7f70832a3b85e.rmeta --extern buddy_system_allocator=/opt/rustwide/target/debug/deps/libbuddy_system_allocator-ad05592acdcec2ab.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-c1cc3465c2845d59.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-ed3ba279ce80868a.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-fea8e4514b550ace.rmeta --extern woke=/opt/rustwide/target/debug/deps/libwoke-2316e841c3c5e630.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d5a611f03bba9ba70a8e639c0e1c390a545a259c7721e2db35addf2e8a9844a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5a611f03bba9ba70a8e639c0e1c390a545a259c7721e2db35addf2e8a9844a9", kill_on_drop: false }`
[INFO] [stdout] d5a611f03bba9ba70a8e639c0e1c390a545a259c7721e2db35addf2e8a9844a9