[INFO] fetching crate websocket-rs 0.1.4...
[INFO] testing websocket-rs-0.1.4 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate websocket-rs 0.1.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate websocket-rs 0.1.4
[INFO] finished tweaking crates.io crate websocket-rs 0.1.4
[INFO] tweaked toml for crates.io crate websocket-rs 0.1.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate websocket-rs 0.1.4 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 107 packages to highest compatible versions
[INFO] [stderr]       Adding base64 v0.12.3 (available: v0.23.1)
[INFO] [stderr]       Adding bytes v0.5.6 (available: v1.12.1)
[INFO] [stderr]       Adding http v0.2.12 (available: v1.5.0)
[INFO] [stderr]       Adding sha1 v0.6.1 (available: v0.11.0)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.53.2)
[INFO] [stderr]       Adding tokio-util v0.3.1 (available: v0.7.19)
[INFO] [stderr]       Adding tracing-subscriber v0.2.25 (available: v0.3.23)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff
[INFO] running `Command { std: "docker" "start" "7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling syn v3.0.6
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling futures-channel v0.3.34
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling tracing-log v0.1.4
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling smallvec v1.16.2
[INFO] [stderr]    Compiling sha1 v0.6.1
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling chrono v0.4.45
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling regex v1.13.1
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling pin-project-internal v1.1.13
[INFO] [stderr]    Compiling futures-macro v0.3.34
[INFO] [stderr]    Compiling pin-project v1.1.13
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling futures-util v0.3.34
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling futures-executor v0.3.34
[INFO] [stderr]    Compiling futures v0.3.34
[INFO] [stderr]    Compiling websocket-rs v0.1.4 (/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] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `websocket-rs` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused dependency `http`
[INFO] [stderr]   --> Cargo.toml:10:15
[INFO] [stderr]    |
[INFO] [stderr] 10 | [dependencies.http]
[INFO] [stderr]    |               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `http`
[INFO] [stderr] warning: unused dependency `tracing-futures`
[INFO] [stderr]   --> Cargo.toml:27:15
[INFO] [stderr]    |
[INFO] [stderr] 27 | [dependencies.tracing-futures]
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `tracing-futures`
[INFO] [stderr] warning: unused dependency `tracing-subscriber`
[INFO] [stderr]   --> Cargo.toml:30:15
[INFO] [stderr]    |
[INFO] [stderr] 30 | [dependencies.tracing-subscriber]
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] help: consider removing the dependency on `tracing-subscriber`
[INFO] [stderr] warning: `websocket-rs` (manifest) generated 3 warnings
[INFO] running `Command { std: "docker" "inspect" "7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff", kill_on_drop: false }`
[INFO] [stdout] 7140eec23b9e67a61419420288ba89e87f8fa007d5f72f96db4c6c97762c85ff
