[INFO] fetching crate octorust 0.1.16...
[INFO] testing octorust-0.1.16 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate octorust 0.1.16 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate octorust 0.1.16 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] started tweaking crates.io crate octorust 0.1.16
[INFO] finished tweaking crates.io crate octorust 0.1.16
[INFO] tweaked toml for crates.io crate octorust 0.1.16 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate octorust 0.1.16 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] a40ca660a5a02ff683bbc886aff473f180fd51911f87a9a9882ba6e2aea9f28a
[INFO] running `Command { std: "docker" "start" "-a" "a40ca660a5a02ff683bbc886aff473f180fd51911f87a9a9882ba6e2aea9f28a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a40ca660a5a02ff683bbc886aff473f180fd51911f87a9a9882ba6e2aea9f28a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a40ca660a5a02ff683bbc886aff473f180fd51911f87a9a9882ba6e2aea9f28a", kill_on_drop: false }`
[INFO] [stdout] a40ca660a5a02ff683bbc886aff473f180fd51911f87a9a9882ba6e2aea9f28a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 14ecf05370e1d8ab349dde1983db64c16273ee7a78dbd6317a968b6d281fb3d3
[INFO] running `Command { std: "docker" "start" "-a" "14ecf05370e1d8ab349dde1983db64c16273ee7a78dbd6317a968b6d281fb3d3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling httparse v1.3.6
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling hyperx v1.3.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling schemars v0.8.3
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling ipnet v2.3.1
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling dyn-clone v1.0.4
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling http v0.2.4
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling http-body v0.4.2
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling pem v0.8.3
[INFO] [stderr]    Compiling serde_derive_internals v0.25.0
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling schemars_derive v0.8.3
[INFO] [stderr]    Compiling async-recursion v0.3.2
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling h2 v0.3.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling simple_asn1 v0.4.1
[INFO] [stderr]    Compiling jsonwebtoken v7.2.0
[INFO] [stderr]    Compiling hyper v0.14.5
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.4
[INFO] [stderr]    Compiling octorust v0.1.16 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:141:1
[INFO] [stdout]     |
[INFO] [stdout] 141 | #![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 `octorust` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "14ecf05370e1d8ab349dde1983db64c16273ee7a78dbd6317a968b6d281fb3d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ecf05370e1d8ab349dde1983db64c16273ee7a78dbd6317a968b6d281fb3d3", kill_on_drop: false }`
[INFO] [stdout] 14ecf05370e1d8ab349dde1983db64c16273ee7a78dbd6317a968b6d281fb3d3
