[INFO] cloning repository https://github.com/Choi-Jungwoo/fire-sensor-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Choi-Jungwoo/fire-sensor-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChoi-Jungwoo%2Ffire-sensor-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChoi-Jungwoo%2Ffire-sensor-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7ed162917ecb17b31af59f5f8d6cbed99048ac8
[INFO] testing Choi-Jungwoo/fire-sensor-example 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%2FChoi-Jungwoo%2Ffire-sensor-example" "/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/Choi-Jungwoo/fire-sensor-example 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/.cargo/config
[INFO] started tweaking git repo https://github.com/Choi-Jungwoo/fire-sensor-example
[INFO] finished tweaking git repo https://github.com/Choi-Jungwoo/fire-sensor-example
[INFO] tweaked toml for git repo https://github.com/Choi-Jungwoo/fire-sensor-example written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Choi-Jungwoo/fire-sensor-example 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 xtensa-lx v0.3.0
[INFO] [stderr]   Downloaded xtensa-lx-rt v0.5.0
[INFO] [stderr]   Downloaded esp8266-hal v0.4.0
[INFO] [stderr]   Downloaded esp8266-hal-proc-macros v0.1.0
[INFO] [stderr]   Downloaded esp8266 v0.1.5
[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] fae3ae0d88ac51f686462937c505c4e100d8c945dcaddff1d0e28b49a9298c95
[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" "fae3ae0d88ac51f686462937c505c4e100d8c945dcaddff1d0e28b49a9298c95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fae3ae0d88ac51f686462937c505c4e100d8c945dcaddff1d0e28b49a9298c95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fae3ae0d88ac51f686462937c505c4e100d8c945dcaddff1d0e28b49a9298c95", kill_on_drop: false }`
[INFO] [stdout] fae3ae0d88ac51f686462937c505c4e100d8c945dcaddff1d0e28b49a9298c95
[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] 105b24c342e1ff5c0489c7c0d8eb3c95c91066236d400772b59b46b2d1970bb6
[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" "105b24c342e1ff5c0489c7c0d8eb3c95c91066236d400772b59b46b2d1970bb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling xtensa-lx v0.3.0
[INFO] [stderr]    Compiling xtensa-lx-rt v0.5.0
[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/xtensa-lx-0.3.0/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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 `xtensa-lx` 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" "105b24c342e1ff5c0489c7c0d8eb3c95c91066236d400772b59b46b2d1970bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "105b24c342e1ff5c0489c7c0d8eb3c95c91066236d400772b59b46b2d1970bb6", kill_on_drop: false }`
[INFO] [stdout] 105b24c342e1ff5c0489c7c0d8eb3c95c91066236d400772b59b46b2d1970bb6