[INFO] fetching crate nnsdk 0.1.0...
[INFO] testing nnsdk-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate nnsdk 0.1.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate nnsdk 0.1.0 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 crates.io crate nnsdk 0.1.0
[INFO] finished tweaking crates.io crate nnsdk 0.1.0
[INFO] tweaked toml for crates.io crate nnsdk 0.1.0 written to /workspace/builds/worker-30/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]  Downloading crates ...
[INFO] [stderr]   Downloaded libc-nnsdk v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 7fc0ab251d77a22e64d7a8b7396dbd8eb513e5e783542266c8e5b8af6ea2b9ba
[INFO] running `Command { std: "docker" "start" "-a" "7fc0ab251d77a22e64d7a8b7396dbd8eb513e5e783542266c8e5b8af6ea2b9ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fc0ab251d77a22e64d7a8b7396dbd8eb513e5e783542266c8e5b8af6ea2b9ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fc0ab251d77a22e64d7a8b7396dbd8eb513e5e783542266c8e5b8af6ea2b9ba", kill_on_drop: false }`
[INFO] [stdout] 7fc0ab251d77a22e64d7a8b7396dbd8eb513e5e783542266c8e5b8af6ea2b9ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] 4603f6eee6a10dc3d8a0d5c9652279532725853540396fa1f485c99e1d34e546
[INFO] running `Command { std: "docker" "start" "-a" "4603f6eee6a10dc3d8a0d5c9652279532725853540396fa1f485c99e1d34e546", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc-nnsdk v0.0.1
[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/libc-nnsdk-0.0.1/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(untagged_unions)]
[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 `libc-nnsdk` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4603f6eee6a10dc3d8a0d5c9652279532725853540396fa1f485c99e1d34e546", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4603f6eee6a10dc3d8a0d5c9652279532725853540396fa1f485c99e1d34e546", kill_on_drop: false }`
[INFO] [stdout] 4603f6eee6a10dc3d8a0d5c9652279532725853540396fa1f485c99e1d34e546
