[INFO] fetching crate voila 3.2.0...
[INFO] checking voila-3.2.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate voila 3.2.0 into /workspace/builds/worker-51/source
[INFO] validating manifest of crates.io crate voila 3.2.0 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] removed /workspace/builds/worker-51/source/rust-toolchain
[INFO] started tweaking crates.io crate voila 3.2.0
[INFO] finished tweaking crates.io crate voila 3.2.0
[INFO] tweaked toml for crates.io crate voila 3.2.0 written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] crate crates.io crate voila 3.2.0 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 md5 v0.7.0
[INFO] [stderr]   Downloaded logos-derive v0.12.0
[INFO] [stderr]   Downloaded byte-unit v4.0.12
[INFO] [stderr]   Downloaded async-stream-impl v0.3.2
[INFO] [stderr]   Downloaded enum_dispatch v0.3.7
[INFO] [stderr]   Downloaded async-stream v0.3.2
[INFO] [stderr]   Downloaded utf8-width v0.1.5
[INFO] [stderr]   Downloaded logos v0.12.0
[INFO] [stderr]   Downloaded path-dedot v3.0.14
[INFO] [stderr]   Downloaded path-absolutize v3.0.11
[INFO] [stderr]   Downloaded fs_extra v1.2.0
[INFO] [stderr]   Downloaded beef v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 34c321c8ed222a318f643fbdeff16bde9d74688793fe49b6d030e0067d42993b
[INFO] running `Command { std: "docker" "start" "-a" "34c321c8ed222a318f643fbdeff16bde9d74688793fe49b6d030e0067d42993b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34c321c8ed222a318f643fbdeff16bde9d74688793fe49b6d030e0067d42993b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34c321c8ed222a318f643fbdeff16bde9d74688793fe49b6d030e0067d42993b", kill_on_drop: false }`
[INFO] [stdout] 34c321c8ed222a318f643fbdeff16bde9d74688793fe49b6d030e0067d42993b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] c63662d1613ad38f33942693eba2e5f3d78bfd182c0c802ecfff3a9dcdd63010
[INFO] running `Command { std: "docker" "start" "-a" "c63662d1613ad38f33942693eba2e5f3d78bfd182c0c802ecfff3a9dcdd63010", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking utf8-width v0.1.5
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]     Checking fs_extra v1.2.0
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking path-dedot v3.0.14
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking path-absolutize v3.0.11
[INFO] [stderr]     Checking byte-unit v4.0.12
[INFO] [stderr]     Checking tar v0.4.37
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling enum_dispatch v0.3.7
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking voila v3.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(format_args_capture)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(once_cell)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(decl_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(option_result_unwrap_unchecked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `voila` due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c63662d1613ad38f33942693eba2e5f3d78bfd182c0c802ecfff3a9dcdd63010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c63662d1613ad38f33942693eba2e5f3d78bfd182c0c802ecfff3a9dcdd63010", kill_on_drop: false }`
[INFO] [stdout] c63662d1613ad38f33942693eba2e5f3d78bfd182c0c802ecfff3a9dcdd63010
