[INFO] cloning repository https://github.com/yubrot/ors
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yubrot/ors" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyubrot%2Fors", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyubrot%2Fors'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f1444a88339cef2d14051b5111c6ee4570a77bf
[INFO] documenting yubrot/ors against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyubrot%2Fors" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yubrot/ors on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yubrot/ors
[INFO] finished tweaking git repo https://github.com/yubrot/ors
[INFO] tweaked toml for git repo https://github.com/yubrot/ors written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/yubrot/ors already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a744508f1dbd14964ea0f15ad1f66c57c37c1c10997f78c1228f09339442a2d5
[INFO] running `Command { std: "docker" "start" "-a" "a744508f1dbd14964ea0f15ad1f66c57c37c1c10997f78c1228f09339442a2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a744508f1dbd14964ea0f15ad1f66c57c37c1c10997f78c1228f09339442a2d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a744508f1dbd14964ea0f15ad1f66c57c37c1c10997f78c1228f09339442a2d5", kill_on_drop: false }`
[INFO] [stdout] a744508f1dbd14964ea0f15ad1f66c57c37c1c10997f78c1228f09339442a2d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ecbb45712ed569c179329cc941af0d95351a380919815d92c3ea54f0920dc50b
[INFO] running `Command { std: "docker" "start" "-a" "ecbb45712ed569c179329cc941af0d95351a380919815d92c3ea54f0920dc50b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling x86_64 v0.14.4
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking volatile v0.4.4
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]    Compiling heapless v0.7.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ors-common v0.1.0 (/opt/rustwide/workdir/ors-common)
[INFO] [stderr]     Checking qemu-exit v2.0.1
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling ors-kernel v0.1.0 (/opt/rustwide/workdir/ors-kernel)
[INFO] [stderr]  Documenting ors-common v0.1.0 (/opt/rustwide/workdir/ors-common)
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/qemu-exit-2.0.1/src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | #![feature(asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/qemu-exit-2.0.1/src/lib.rs:74:1
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![feature(const_panic)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 compile `qemu-exit` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ecbb45712ed569c179329cc941af0d95351a380919815d92c3ea54f0920dc50b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecbb45712ed569c179329cc941af0d95351a380919815d92c3ea54f0920dc50b", kill_on_drop: false }`
[INFO] [stdout] ecbb45712ed569c179329cc941af0d95351a380919815d92c3ea54f0920dc50b
