[INFO] fetching crate revent 0.29.0...
[INFO] testing revent-0.29.0 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate revent 0.29.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate revent 0.29.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate revent 0.29.0
[INFO] finished tweaking crates.io crate revent 0.29.0
[INFO] tweaked toml for crates.io crate revent 0.29.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate revent 0.29.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.63
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.63
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.63
[INFO] [stderr]   Downloaded web-sys v0.3.40
[INFO] [stderr]   Downloaded js-sys v0.3.40
[INFO] [stderr]   Downloaded isize-vec v0.1.1
[INFO] [stderr]   Downloaded syn v1.0.30
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.2
[INFO] [stderr]   Downloaded quickcheck_macros v0.9.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.63
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f761e3e5745ff764a462621b96d3ee0270b672b6887397da39b9e58d0743829f
[INFO] running `Command { std: "docker" "start" "-a" "f761e3e5745ff764a462621b96d3ee0270b672b6887397da39b9e58d0743829f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f761e3e5745ff764a462621b96d3ee0270b672b6887397da39b9e58d0743829f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f761e3e5745ff764a462621b96d3ee0270b672b6887397da39b9e58d0743829f", kill_on_drop: false }`
[INFO] [stdout] f761e3e5745ff764a462621b96d3ee0270b672b6887397da39b9e58d0743829f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6e1f9c0c2421a8e4244c7acda5f7471d4b8c7df0a8951fd3f8871251f9d1cd3
[INFO] running `Command { std: "docker" "start" "-a" "b6e1f9c0c2421a8e4244c7acda5f7471d4b8c7df0a8951fd3f8871251f9d1cd3", kill_on_drop: false }`
[INFO] [stderr]    Compiling isize-vec v0.1.1
[INFO] [stderr]    Compiling revent v0.29.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(coerce_unsized, drain_filter, unsize)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:63:28
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(coerce_unsized, drain_filter, unsize)]
[INFO] [stdout]    |                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:63:42
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(coerce_unsized, drain_filter, unsize)]
[INFO] [stdout]    |                                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `revent` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "b6e1f9c0c2421a8e4244c7acda5f7471d4b8c7df0a8951fd3f8871251f9d1cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6e1f9c0c2421a8e4244c7acda5f7471d4b8c7df0a8951fd3f8871251f9d1cd3", kill_on_drop: false }`
[INFO] [stdout] b6e1f9c0c2421a8e4244c7acda5f7471d4b8c7df0a8951fd3f8871251f9d1cd3
