[INFO] cloning repository https://github.com/lcdr/lu_packets
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lcdr/lu_packets" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flcdr%2Flu_packets", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flcdr%2Flu_packets'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a075f346968c2c4e62966cf07687d403ab5a9f03
[INFO] testing lcdr/lu_packets against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flcdr%2Flu_packets" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lcdr/lu_packets on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/lcdr/lu_packets
[INFO] finished tweaking git repo https://github.com/lcdr/lu_packets
[INFO] tweaked toml for git repo https://github.com/lcdr/lu_packets written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/lcdr/lu_packets already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded adler v0.2.2
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bddd7e432708538b7bd7883921a5454fce067367ee277ba8d62fdfa853d08c44
[INFO] running `Command { std: "docker" "start" "-a" "bddd7e432708538b7bd7883921a5454fce067367ee277ba8d62fdfa853d08c44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bddd7e432708538b7bd7883921a5454fce067367ee277ba8d62fdfa853d08c44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bddd7e432708538b7bd7883921a5454fce067367ee277ba8d62fdfa853d08c44", kill_on_drop: false }`
[INFO] [stdout] bddd7e432708538b7bd7883921a5454fce067367ee277ba8d62fdfa853d08c44
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7789b063697c767c093348887c886fb58714df6ca2fb7019de97c26fdb5fcfd
[INFO] running `Command { std: "docker" "start" "-a" "b7789b063697c767c093348887c886fb58714df6ca2fb7019de97c26fdb5fcfd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling adler v0.2.2
[INFO] [stderr]    Compiling endio_bit v0.1.0 (https://github.com/lcdr/endio_bit?rev=46b1b0eda359dd85b5eabf9714e839c3728c75af#46b1b0ed)
[INFO] [stderr]    Compiling miniz_oxide v0.4.0
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling endio_derive v0.2.0 (https://github.com/lcdr/endio?rev=6e988eed6d9d3b1fa0edde34062edfb3b01d344a#6e988eed)
[INFO] [stderr]    Compiling lu_packets_derive v0.1.0 (/opt/rustwide/workdir/lu_packets_derive)
[INFO] [stderr]    Compiling endio v0.2.0 (https://github.com/lcdr/endio?rev=6e988eed6d9d3b1fa0edde34062edfb3b01d344a#6e988eed)
[INFO] [stderr]    Compiling lu_packets v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(arbitrary_enum_discriminant)]
[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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(specialization)]
[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 `lu_packets` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "b7789b063697c767c093348887c886fb58714df6ca2fb7019de97c26fdb5fcfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7789b063697c767c093348887c886fb58714df6ca2fb7019de97c26fdb5fcfd", kill_on_drop: false }`
[INFO] [stdout] b7789b063697c767c093348887c886fb58714df6ca2fb7019de97c26fdb5fcfd
