[INFO] fetching crate unmp-center 0.1.2...
[INFO] testing unmp-center-0.1.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate unmp-center 0.1.2 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate unmp-center 0.1.2 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unmp-center 0.1.2
[INFO] finished tweaking crates.io crate unmp-center 0.1.2
[INFO] tweaked toml for crates.io crate unmp-center 0.1.2 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cfd3f7bc98123826d174c729bf74b78ed23f46e00a36e91f4f7568bc451d93e
[INFO] running `Command { std: "docker" "start" "-a" "3cfd3f7bc98123826d174c729bf74b78ed23f46e00a36e91f4f7568bc451d93e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cfd3f7bc98123826d174c729bf74b78ed23f46e00a36e91f4f7568bc451d93e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cfd3f7bc98123826d174c729bf74b78ed23f46e00a36e91f4f7568bc451d93e", kill_on_drop: false }`
[INFO] [stdout] 3cfd3f7bc98123826d174c729bf74b78ed23f46e00a36e91f4f7568bc451d93e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b263cda3008a1157a1cfe07f79c399bb3ee478db1615c540cf975075859fca3
[INFO] running `Command { std: "docker" "start" "-a" "8b263cda3008a1157a1cfe07f79c399bb3ee478db1615c540cf975075859fca3", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling heapless v0.7.10
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]    Compiling async-task v4.2.0
[INFO] [stderr]    Compiling unmp-id v1.4.0
[INFO] [stderr]    Compiling fixed-queue v0.3.11
[INFO] [stderr]    Compiling unmp-id v2.0.0
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling unmp-center-core v0.1.3
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling futures-intrusive v0.4.0
[INFO] [stderr]    Compiling task-stream v0.3.3
[INFO] [stderr]    Compiling unmp v0.4.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unmp-0.4.5/src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(const_btree_new)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/unmp-0.4.5/src/net/history.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn add(&self, packet: &Packet) -> bool {
[INFO] [stdout]    |                                           ---- expected `bool` because of return type
[INFO] [stdout] 39 |         let new_log = Log::new(packet);
[INFO] [stdout] 40 |         self.inner.insert(new_log)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unmp` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "8b263cda3008a1157a1cfe07f79c399bb3ee478db1615c540cf975075859fca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b263cda3008a1157a1cfe07f79c399bb3ee478db1615c540cf975075859fca3", kill_on_drop: false }`
[INFO] [stdout] 8b263cda3008a1157a1cfe07f79c399bb3ee478db1615c540cf975075859fca3