[INFO] fetching crate unix-signal 0.1.4...
[INFO] checking unix-signal-0.1.4 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate unix-signal 0.1.4 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate unix-signal 0.1.4 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unix-signal 0.1.4
[INFO] finished tweaking crates.io crate unix-signal 0.1.4
[INFO] tweaked toml for crates.io crate unix-signal 0.1.4 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd189ff77f10caa515a21080e7a85e23470ecb9a6bc37e27a0bba5fbd0c1278b
[INFO] running `Command { std: "docker" "start" "-a" "fd189ff77f10caa515a21080e7a85e23470ecb9a6bc37e27a0bba5fbd0c1278b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd189ff77f10caa515a21080e7a85e23470ecb9a6bc37e27a0bba5fbd0c1278b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd189ff77f10caa515a21080e7a85e23470ecb9a6bc37e27a0bba5fbd0c1278b", kill_on_drop: false }`
[INFO] [stdout] fd189ff77f10caa515a21080e7a85e23470ecb9a6bc37e27a0bba5fbd0c1278b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9157da0ce2c7284ed143651cf350284f6746c8c9033807b77e682943d0e762dd
[INFO] running `Command { std: "docker" "start" "-a" "9157da0ce2c7284ed143651cf350284f6746c8c9033807b77e682943d0e762dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling ptr v0.2.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling hash-table v0.2.5
[INFO] [stderr]    Compiling containers v0.9.12
[INFO] [stderr]     Checking idem v0.4.0
[INFO] [stderr]     Checking abort v0.1.3
[INFO] [stderr]     Checking rel v0.2.0
[INFO] [stderr]    Compiling i-o v0.4.7
[INFO] [stderr]     Checking heap v0.1.0
[INFO] [stderr]     Checking libc-interface v0.1.2
[INFO] [stderr]     Checking utf v0.1.6
[INFO] [stderr]     Checking flags v0.1.5
[INFO] [stderr]     Checking system-call v0.1.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking fallible v0.1.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking idem v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[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/system-call-0.1.3/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(llvm_asm)]
[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 `system-call` 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" "9157da0ce2c7284ed143651cf350284f6746c8c9033807b77e682943d0e762dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9157da0ce2c7284ed143651cf350284f6746c8c9033807b77e682943d0e762dd", kill_on_drop: false }`
[INFO] [stdout] 9157da0ce2c7284ed143651cf350284f6746c8c9033807b77e682943d0e762dd
