[INFO] cloning repository https://github.com/varesa/rs-stm32f1-hello-ethernet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varesa/rs-stm32f1-hello-ethernet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frs-stm32f1-hello-ethernet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frs-stm32f1-hello-ethernet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d9827b3c1f1460f75ae942c6c6599e96eef407d
[INFO] testing varesa/rs-stm32f1-hello-ethernet against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frs-stm32f1-hello-ethernet" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varesa/rs-stm32f1-hello-ethernet 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] removed /workspace/builds/worker-20/source/.cargo/config
[INFO] started tweaking git repo https://github.com/varesa/rs-stm32f1-hello-ethernet
[INFO] finished tweaking git repo https://github.com/varesa/rs-stm32f1-hello-ethernet
[INFO] tweaked toml for git repo https://github.com/varesa/rs-stm32f1-hello-ethernet written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/varesa/rs-stm32f1-hello-ethernet already has a lockfile, it will not be regenerated
[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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 0bee89579705727aa3d9772fd8a4922ee9828d6dfa0c47862bc26630225a8fee
[INFO] running `Command { std: "docker" "start" "-a" "0bee89579705727aa3d9772fd8a4922ee9828d6dfa0c47862bc26630225a8fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bee89579705727aa3d9772fd8a4922ee9828d6dfa0c47862bc26630225a8fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bee89579705727aa3d9772fd8a4922ee9828d6dfa0c47862bc26630225a8fee", kill_on_drop: false }`
[INFO] [stdout] 0bee89579705727aa3d9772fd8a4922ee9828d6dfa0c47862bc26630225a8fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 8be7406124d514cf798a8a4a5419971266eee57eb5c253f4c9ffa55267136541
[INFO] running `Command { std: "docker" "start" "-a" "8be7406124d514cf798a8a4a5419971266eee57eb5c253f4c9ffa55267136541", kill_on_drop: false }`
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling vcell v0.1.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cortex-m-rt v0.6.13
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling stm32f1 v0.11.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling stm32f1 v0.12.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling embedded-dma v0.1.2
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling as-slice v0.1.4
[INFO] [stderr]    Compiling enc28j60 v0.2.1 (https://github.com/chernomor/enc28j60?rev=7643e5739535eef005a09cd9ff05c1b9100cf741#7643e573)
[INFO] [stderr]    Compiling aligned v0.3.4
[INFO] [stderr]    Compiling panic-semihosting v0.5.4
[INFO] [stderr]    Compiling hash32-derive v0.1.0
[INFO] [stderr]    Compiling jnet v0.1.0 (https://github.com/japaric/jnet?rev=df96b408049ca952ad7844d6552e87cf8fc18d2a#df96b408)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/jnet-2e06944788059b3c/df96b40/src/lib.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 | #![feature(try_from)]
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/jnet-2e06944788059b3c/df96b40/src/lib.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | #![feature(unsize)]
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `jnet` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8be7406124d514cf798a8a4a5419971266eee57eb5c253f4c9ffa55267136541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8be7406124d514cf798a8a4a5419971266eee57eb5c253f4c9ffa55267136541", kill_on_drop: false }`
[INFO] [stdout] 8be7406124d514cf798a8a4a5419971266eee57eb5c253f4c9ffa55267136541