[INFO] fetching crate slam-cv 0.1.3...
[INFO] testing slam-cv-0.1.3 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate slam-cv 0.1.3 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate slam-cv 0.1.3 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 slam-cv 0.1.3
[INFO] finished tweaking crates.io crate slam-cv 0.1.3
[INFO] tweaked toml for crates.io crate slam-cv 0.1.3 written to /workspace/builds/worker-8/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded podo-core-driver v0.3.5
[INFO] [stderr]   Downloaded sample-consensus v0.2.0
[INFO] [stderr]   Downloaded cv-core v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 7e35e33af930309c48401a470ae7ff2a93fc92e6573bac5ae63ec30b4e6ff850
[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" "7e35e33af930309c48401a470ae7ff2a93fc92e6573bac5ae63ec30b4e6ff850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e35e33af930309c48401a470ae7ff2a93fc92e6573bac5ae63ec30b4e6ff850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e35e33af930309c48401a470ae7ff2a93fc92e6573bac5ae63ec30b4e6ff850", kill_on_drop: false }`
[INFO] [stdout] 7e35e33af930309c48401a470ae7ff2a93fc92e6573bac5ae63ec30b4e6ff850
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] d232af72d3cdf38877598e471e9c5e6939f89b620f5ace81c13f92c1aa02a58d
[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" "d232af72d3cdf38877598e471e9c5e6939f89b620f5ace81c13f92c1aa02a58d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling sample-consensus v0.2.0
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling simba v0.1.5
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling nalgebra v0.21.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling cv-core v0.10.0
[INFO] [stderr]    Compiling slam-cv v0.1.3 (/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(associated_type_defaults)]
[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 `slam-cv` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d232af72d3cdf38877598e471e9c5e6939f89b620f5ace81c13f92c1aa02a58d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d232af72d3cdf38877598e471e9c5e6939f89b620f5ace81c13f92c1aa02a58d", kill_on_drop: false }`
[INFO] [stdout] d232af72d3cdf38877598e471e9c5e6939f89b620f5ace81c13f92c1aa02a58d