[INFO] fetching crate revai 0.2.2...
[INFO] testing revai-0.2.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate revai 0.2.2 into /workspace/builds/worker-17/source
[INFO] validating manifest of crates.io crate revai 0.2.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate revai 0.2.2
[INFO] finished tweaking crates.io crate revai 0.2.2
[INFO] tweaked toml for crates.io crate revai 0.2.2 written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dyn-clone v1.0.4
[INFO] [stderr]   Downloaded nom_pem v4.0.0
[INFO] [stderr]   Downloaded serde_derive_internals v0.25.0
[INFO] [stderr]   Downloaded num-bigint v0.2.6
[INFO] [stderr]   Downloaded pem v0.8.3
[INFO] [stderr]   Downloaded schemars_derive v0.8.8
[INFO] [stderr]   Downloaded schemars v0.8.8
[INFO] [stderr]   Downloaded urlencoding v1.3.3
[INFO] [stderr]   Downloaded simple_asn1 v0.4.1
[INFO] [stderr]   Downloaded hyperx v1.4.0
[INFO] [stderr]   Downloaded jsonwebtoken v7.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d040f78dd369ad2f03a42f8dbadec69a88e339ba1a4e5e693746bac4cb9d9bfe
[INFO] running `Command { std: "docker" "start" "-a" "d040f78dd369ad2f03a42f8dbadec69a88e339ba1a4e5e693746bac4cb9d9bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d040f78dd369ad2f03a42f8dbadec69a88e339ba1a4e5e693746bac4cb9d9bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d040f78dd369ad2f03a42f8dbadec69a88e339ba1a4e5e693746bac4cb9d9bfe", kill_on_drop: false }`
[INFO] [stdout] d040f78dd369ad2f03a42f8dbadec69a88e339ba1a4e5e693746bac4cb9d9bfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baa415cf7fd21c0fd4b8e52c8297dc9eb16f0b16b7e288dfca1f00c3457ab9d5
[INFO] running `Command { std: "docker" "start" "-a" "baa415cf7fd21c0fd4b8e52c8297dc9eb16f0b16b7e288dfca1f00c3457ab9d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling hyperx v1.4.0
[INFO] [stderr]    Compiling schemars v0.8.8
[INFO] [stderr]    Compiling language-tags v0.3.2
[INFO] [stderr]    Compiling urlencoding v1.3.3
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling tracing v0.1.31
[INFO] [stderr]    Compiling pem v0.8.3
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling serde_derive_internals v0.25.0
[INFO] [stderr]    Compiling async-recursion v0.3.2
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling schemars_derive v0.8.8
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling mio v0.8.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling simple_asn1 v0.4.1
[INFO] [stderr]    Compiling jsonwebtoken v7.2.0
[INFO] [stderr]    Compiling http-body v0.4.4
[INFO] [stderr]    Compiling tokio-util v0.6.9
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling h2 v0.3.11
[INFO] [stderr]    Compiling hyper v0.14.17
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.9
[INFO] [stderr]    Compiling revai v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:254:12
[INFO] [stdout]     |
[INFO] [stdout] 254 | #![feature(async_stream)]
[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 `revai` 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" "baa415cf7fd21c0fd4b8e52c8297dc9eb16f0b16b7e288dfca1f00c3457ab9d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baa415cf7fd21c0fd4b8e52c8297dc9eb16f0b16b7e288dfca1f00c3457ab9d5", kill_on_drop: false }`
[INFO] [stdout] baa415cf7fd21c0fd4b8e52c8297dc9eb16f0b16b7e288dfca1f00c3457ab9d5