[INFO] fetching crate qcollect-traits 0.7.4...
[INFO] testing qcollect-traits-0.7.4 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate qcollect-traits 0.7.4 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate qcollect-traits 0.7.4 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qcollect-traits 0.7.4
[INFO] finished tweaking crates.io crate qcollect-traits 0.7.4
[INFO] tweaked toml for crates.io crate qcollect-traits 0.7.4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da0c12ca0d6b63eb4bc4ee800a7ecfa6236ee33194eb246b1253a9e62b4721a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "da0c12ca0d6b63eb4bc4ee800a7ecfa6236ee33194eb246b1253a9e62b4721a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da0c12ca0d6b63eb4bc4ee800a7ecfa6236ee33194eb246b1253a9e62b4721a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da0c12ca0d6b63eb4bc4ee800a7ecfa6236ee33194eb246b1253a9e62b4721a2", kill_on_drop: false }`
[INFO] [stdout] da0c12ca0d6b63eb4bc4ee800a7ecfa6236ee33194eb246b1253a9e62b4721a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea8d48154e18517b80e73ba4f30255d4dddc7bd645659e13732737e5d8d3ce17
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ea8d48154e18517b80e73ba4f30255d4dddc7bd645659e13732737e5d8d3ce17", kill_on_drop: false }`
[INFO] [stderr]    Compiling vec_map v0.3.0
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling qcollect-traits v0.7.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | / #![feature(
[INFO] [stdout] 52 | |     associated_type_defaults,
[INFO] [stdout] 53 | |     collections, 
[INFO] [stdout] 54 | |     collections_bound, 
[INFO] [stdout] 55 | |     btree_range, 
[INFO] [stdout] 56 | |     drain,
[INFO] [stdout] 57 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0275]: overflow evaluating the requirement `<Self as traits::_Iterate<'a>>::Item == _`
[INFO] [stdout]   --> src/traits.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |     type Item = <Self::Iter as Iterator>::Item;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0275, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0275`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qcollect-traits` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "ea8d48154e18517b80e73ba4f30255d4dddc7bd645659e13732737e5d8d3ce17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea8d48154e18517b80e73ba4f30255d4dddc7bd645659e13732737e5d8d3ce17", kill_on_drop: false }`
[INFO] [stdout] ea8d48154e18517b80e73ba4f30255d4dddc7bd645659e13732737e5d8d3ce17