[INFO] cloning repository https://github.com/ryanplusplus/avr-tiny-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryanplusplus/avr-tiny-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanplusplus%2Favr-tiny-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanplusplus%2Favr-tiny-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 140c72441ce451feed86ca7dab5acd8f4b9bcaac
[INFO] testing ryanplusplus/avr-tiny-rs against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryanplusplus%2Favr-tiny-rs" "/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/ryanplusplus/avr-tiny-rs on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/ryanplusplus/avr-tiny-rs
[INFO] finished tweaking git repo https://github.com/ryanplusplus/avr-tiny-rs
[INFO] tweaked toml for git repo https://github.com/ryanplusplus/avr-tiny-rs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ryanplusplus/avr-tiny-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/ryanplusplus/tiny.rs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f52f5c9289528a9172b5f6323aa5e3854aadf1a9c5b755c6b5a7ebc778c1603f
[INFO] running `Command { std: "docker" "start" "-a" "f52f5c9289528a9172b5f6323aa5e3854aadf1a9c5b755c6b5a7ebc778c1603f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f52f5c9289528a9172b5f6323aa5e3854aadf1a9c5b755c6b5a7ebc778c1603f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f52f5c9289528a9172b5f6323aa5e3854aadf1a9c5b755c6b5a7ebc778c1603f", kill_on_drop: false }`
[INFO] [stdout] f52f5c9289528a9172b5f6323aa5e3854aadf1a9c5b755c6b5a7ebc778c1603f
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2872c2ff1a60cf19b88051bbfef1a526d9fe436c028542711c6681f6dfd8d61
[INFO] running `Command { std: "docker" "start" "-a" "b2872c2ff1a60cf19b88051bbfef1a526d9fe436c028542711c6681f6dfd8d61", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling tiny v0.1.0 (https://github.com/ryanplusplus/tiny.rs?rev=10a84cb#10a84cb5)
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling avr-device-macros v0.3.0
[INFO] [stderr]    Compiling avr-device v0.3.0
[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/avr-device-0.3.0/src/lib.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | #![feature(llvm_asm)]
[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 `avr-device` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b2872c2ff1a60cf19b88051bbfef1a526d9fe436c028542711c6681f6dfd8d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2872c2ff1a60cf19b88051bbfef1a526d9fe436c028542711c6681f6dfd8d61", kill_on_drop: false }`
[INFO] [stdout] b2872c2ff1a60cf19b88051bbfef1a526d9fe436c028542711c6681f6dfd8d61