[INFO] fetching crate reverie-zk 0.2.1-rc.4...
[INFO] testing reverie-zk-0.2.1-rc.4 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate reverie-zk 0.2.1-rc.4 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate reverie-zk 0.2.1-rc.4 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] removed /workspace/builds/worker-21/source/rust-toolchain
[INFO] started tweaking crates.io crate reverie-zk 0.2.1-rc.4
[INFO] finished tweaking crates.io crate reverie-zk 0.2.1-rc.4
[INFO] tweaked toml for crates.io crate reverie-zk 0.2.1-rc.4 written to /workspace/builds/worker-21/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] a5d05312341b3d53261030fbfbc2a8a00015503302c56cd4c869710f3a1dc3b2
[INFO] running `Command { std: "docker" "start" "-a" "a5d05312341b3d53261030fbfbc2a8a00015503302c56cd4c869710f3a1dc3b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5d05312341b3d53261030fbfbc2a8a00015503302c56cd4c869710f3a1dc3b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5d05312341b3d53261030fbfbc2a8a00015503302c56cd4c869710f3a1dc3b2", kill_on_drop: false }`
[INFO] [stdout] a5d05312341b3d53261030fbfbc2a8a00015503302c56cd4c869710f3a1dc3b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] a3247e0c7d6634d6d671824f2f7dfd5c3165ea9183d1b6e23efec34c8b14155c
[INFO] running `Command { std: "docker" "start" "-a" "a3247e0c7d6634d6d671824f2f7dfd5c3165ea9183d1b6e23efec34c8b14155c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling fastrand v1.5.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
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[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling sysinfo v0.15.9
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling serde-big-array v0.3.2
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-lock v2.4.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling async-stream v0.3.2
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling polling v2.1.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling async-global-executor v2.0.2
[INFO] [stderr]    Compiling async-std v1.9.0
[INFO] [stderr]    Compiling futures-executor v0.3.16
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling async-scoped v0.6.1
[INFO] [stderr]    Compiling reverie-zk v0.2.1-rc.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `reverie-zk` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a3247e0c7d6634d6d671824f2f7dfd5c3165ea9183d1b6e23efec34c8b14155c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3247e0c7d6634d6d671824f2f7dfd5c3165ea9183d1b6e23efec34c8b14155c", kill_on_drop: false }`
[INFO] [stdout] a3247e0c7d6634d6d671824f2f7dfd5c3165ea9183d1b6e23efec34c8b14155c
