[INFO] cloning repository https://github.com/inherd/unflow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/inherd/unflow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finherd%2Funflow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finherd%2Funflow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77f6730f85758c80bd827163d3a6c666d293bb4a
[INFO] testing inherd/unflow against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finherd%2Funflow" "/workspace/builds/worker-56/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-56/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/inherd/unflow on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-56/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/inherd/unflow
[INFO] finished tweaking git repo https://github.com/inherd/unflow
[INFO] tweaked toml for git repo https://github.com/inherd/unflow written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] crate git repo https://github.com/inherd/unflow already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/IWANABETHATGUY/lsp-text-document`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dashmap v4.0.2
[INFO] [stderr]   Downloaded tower-lsp-macros v0.4.1
[INFO] [stderr]   Downloaded auto_impl v0.4.1
[INFO] [stderr]   Downloaded lsp-types v0.84.0
[INFO] [stderr]   Downloaded better_typeid_derive v0.1.1
[INFO] [stderr]   Downloaded antlr-rust v0.2.0
[INFO] [stderr]   Downloaded lsp-types v0.89.1
[INFO] [stderr]   Downloaded better_any v0.1.1
[INFO] [stderr]   Downloaded tower-lsp v0.14.1
[INFO] [stderr]   Downloaded murmur3 v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b43761a7b742c45c79c73902b8b12903c4b2ece3092227d4ab070c94346edf23
[INFO] running `Command { std: "docker" "start" "-a" "b43761a7b742c45c79c73902b8b12903c4b2ece3092227d4ab070c94346edf23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b43761a7b742c45c79c73902b8b12903c4b2ece3092227d4ab070c94346edf23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b43761a7b742c45c79c73902b8b12903c4b2ece3092227d4ab070c94346edf23", kill_on_drop: false }`
[INFO] [stdout] b43761a7b742c45c79c73902b8b12903c4b2ece3092227d4ab070c94346edf23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8edf1004784015f6b1640c8ce9993a73027641e313c36433b3633036ce10a1e9
[INFO] running `Command { std: "docker" "start" "-a" "8edf1004784015f6b1640c8ce9993a73027641e313c36433b3633036ce10a1e9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling futures-sink v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling tinyvec v1.2.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling ropey v1.2.0
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling murmur3 v0.4.1
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]    Compiling better_typeid_derive v0.1.1
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling auto_impl v0.4.1
[INFO] [stderr]    Compiling tower-lsp-macros v0.4.1
[INFO] [stderr]    Compiling better_any v0.1.1
[INFO] [stderr]    Compiling antlr-rust v0.2.0
[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/antlr-rust-0.2.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(raw)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(is_sorted)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(cell_update)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(coerce_unsized)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(associated_type_defaults)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(generic_associated_types)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/antlr-rust-0.2.0/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(crate_visibility_modifier)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 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 `antlr-rust` due to 11 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8edf1004784015f6b1640c8ce9993a73027641e313c36433b3633036ce10a1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8edf1004784015f6b1640c8ce9993a73027641e313c36433b3633036ce10a1e9", kill_on_drop: false }`
[INFO] [stdout] 8edf1004784015f6b1640c8ce9993a73027641e313c36433b3633036ce10a1e9