[INFO] fetching crate hermit-sys 0.1.22...
[INFO] testing hermit-sys-0.1.22 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate hermit-sys 0.1.22 into /workspace/builds/worker-98/source
[INFO] validating manifest of crates.io crate hermit-sys 0.1.22 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] removed /workspace/builds/worker-98/source/rust-toolchain
[INFO] started tweaking crates.io crate hermit-sys 0.1.22
[INFO] finished tweaking crates.io crate hermit-sys 0.1.22
[INFO] tweaked toml for crates.io crate hermit-sys 0.1.22 written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded llvm-tools v0.1.1
[INFO] [stderr]   Downloaded managed v0.7.2
[INFO] [stderr]   Downloaded raw-cpuid v10.2.0
[INFO] [stderr]   Downloaded rftrace v0.1.0
[INFO] [stderr]   Downloaded smoltcp v0.7.5
[INFO] [stderr]   Downloaded register v1.0.2
[INFO] [stderr]   Downloaded tock-registers v0.6.0
[INFO] [stderr]   Downloaded cortex-a v5.1.6
[INFO] [stderr]   Downloaded target_build_utils v0.3.1
[INFO] [stderr]   Downloaded x86 v0.41.0
[INFO] [stderr]   Downloaded aarch64 v0.0.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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] 44822d4e713f7c1becf4e838559fb15142444fac30fa99580761f901614ccc48
[INFO] running `Command { std: "docker" "start" "-a" "44822d4e713f7c1becf4e838559fb15142444fac30fa99580761f901614ccc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44822d4e713f7c1becf4e838559fb15142444fac30fa99580761f901614ccc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44822d4e713f7c1becf4e838559fb15142444fac30fa99580761f901614ccc48", kill_on_drop: false }`
[INFO] [stdout] 44822d4e713f7c1becf4e838559fb15142444fac30fa99580761f901614ccc48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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" "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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b678d5f1a0359c3b676c7abf5aea2787ed6433de8511a7c8d9f8cc6d928a9e8
[INFO] running `Command { std: "docker" "start" "-a" "1b678d5f1a0359c3b676c7abf5aea2787ed6433de8511a7c8d9f8cc6d928a9e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]    Compiling x86 v0.41.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling raw-cpuid v10.2.0
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift 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/x86-0.41.0/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(llvm_asm, core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling num-traits v0.1.43
[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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1b678d5f1a0359c3b676c7abf5aea2787ed6433de8511a7c8d9f8cc6d928a9e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b678d5f1a0359c3b676c7abf5aea2787ed6433de8511a7c8d9f8cc6d928a9e8", kill_on_drop: false }`
[INFO] [stdout] 1b678d5f1a0359c3b676c7abf5aea2787ed6433de8511a7c8d9f8cc6d928a9e8
