[INFO] fetching crate lightbeam 0.30.0...
[INFO] checking lightbeam-0.30.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate lightbeam 0.30.0 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate lightbeam 0.30.0 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 lightbeam 0.30.0
[INFO] finished tweaking crates.io crate lightbeam 0.30.0
[INFO] tweaked toml for crates.io crate lightbeam 0.30.0 written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate crates.io crate lightbeam 0.30.0 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iter-enum v1.0.1
[INFO] [stderr]   Downloaded capstone v0.9.0
[INFO] [stderr]   Downloaded capstone-sys v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 803ef503ae960b7df56308ec0966924ffc8d0053315b077a4522ef45e76a32cd
[INFO] running `Command { std: "docker" "start" "-a" "803ef503ae960b7df56308ec0966924ffc8d0053315b077a4522ef45e76a32cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "803ef503ae960b7df56308ec0966924ffc8d0053315b077a4522ef45e76a32cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "803ef503ae960b7df56308ec0966924ffc8d0053315b077a4522ef45e76a32cd", kill_on_drop: false }`
[INFO] [stdout] 803ef503ae960b7df56308ec0966924ffc8d0053315b077a4522ef45e76a32cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 65f9e8937b952f7e65fd332e9323fa9b5ed40fd443531e7294f3275f5b31d4ba
[INFO] running `Command { std: "docker" "start" "-a" "65f9e8937b952f7e65fd332e9323fa9b5ed40fd443531e7294f3275f5b31d4ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling cranelift-entity v0.77.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.77.0
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling target-lexicon v0.12.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]     Checking wasmparser v0.80.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking anyhow v1.0.44
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.77.0
[INFO] [stderr]     Checking wast v38.0.0
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking cranelift-bforest v0.77.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling capstone-sys v0.13.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking memmap2 v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]     Checking wat v1.0.40
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]    Compiling dynasm v1.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling iter-enum v1.0.1
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling cranelift-codegen v0.77.0
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking dynasmrt v1.1.0
[INFO] [stderr]     Checking capstone v0.9.0
[INFO] [stderr]     Checking lightbeam v0.30.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[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 `lightbeam` 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" "65f9e8937b952f7e65fd332e9323fa9b5ed40fd443531e7294f3275f5b31d4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65f9e8937b952f7e65fd332e9323fa9b5ed40fd443531e7294f3275f5b31d4ba", kill_on_drop: false }`
[INFO] [stdout] 65f9e8937b952f7e65fd332e9323fa9b5ed40fd443531e7294f3275f5b31d4ba
