[INFO] fetching crate processortrace 0.0.3...
[INFO] documenting processortrace-0.0.3 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate processortrace 0.0.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate processortrace 0.0.3 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate processortrace 0.0.3
[INFO] finished tweaking crates.io crate processortrace 0.0.3
[INFO] tweaked toml for crates.io crate processortrace 0.0.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded raw-cpuid v7.0.3
[INFO] [stderr]   Downloaded rlibc v1.0.0
[INFO] [stderr]   Downloaded mmap v0.1.1
[INFO] [stderr]   Downloaded nix v0.19.0
[INFO] [stderr]   Downloaded driverkit v0.3.0
[INFO] [stderr]   Downloaded x86 v0.32.0
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffdbc5e237fb79b6b60925e435d10a04af65b34521a73f6bdd02d4bd9c023e2a
[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" "ffdbc5e237fb79b6b60925e435d10a04af65b34521a73f6bdd02d4bd9c023e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffdbc5e237fb79b6b60925e435d10a04af65b34521a73f6bdd02d4bd9c023e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffdbc5e237fb79b6b60925e435d10a04af65b34521a73f6bdd02d4bd9c023e2a", kill_on_drop: false }`
[INFO] [stdout] ffdbc5e237fb79b6b60925e435d10a04af65b34521a73f6bdd02d4bd9c023e2a
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 892de124b921ed199715a8c1ed8872b58ecc0acece81cf58a2ba6b60a6a8db06
[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" "892de124b921ed199715a8c1ed8872b58ecc0acece81cf58a2ba6b60a6a8db06", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86 v0.32.0
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking nix v0.19.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking mmap v0.1.1
[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/x86-0.32.0/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(llvm_asm, core_intrinsics)]
[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 compile `x86`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "892de124b921ed199715a8c1ed8872b58ecc0acece81cf58a2ba6b60a6a8db06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "892de124b921ed199715a8c1ed8872b58ecc0acece81cf58a2ba6b60a6a8db06", kill_on_drop: false }`
[INFO] [stdout] 892de124b921ed199715a8c1ed8872b58ecc0acece81cf58a2ba6b60a6a8db06
