[INFO] cloning repository https://github.com/yuvrajchowdary/adrenaline-os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuvrajchowdary/adrenaline-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuvrajchowdary%2Fadrenaline-os"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuvrajchowdary%2Fadrenaline-os'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 33088f1034f2cab3f35691e0d457c1c96a5deddc
[INFO] testing yuvrajchowdary/adrenaline-os against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuvrajchowdary%2Fadrenaline-os" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
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Checking out files: 100% (479/479), done.
[INFO] validating manifest of git repo https://github.com/yuvrajchowdary/adrenaline-os on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yuvrajchowdary/adrenaline-os
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/yuvrajchowdary/adrenaline-os
[INFO] tweaked toml for git repo https://github.com/yuvrajchowdary/adrenaline-os written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/yuvrajchowdary/adrenaline-os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 29536025e5d2a0d301b5a7761847c6219addb477cd20d1af079dd690e6cfb795
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "29536025e5d2a0d301b5a7761847c6219addb477cd20d1af079dd690e6cfb795"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling x86_64 v0.9.6
[INFO] [stderr]    Compiling bootloader v0.8.9
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling cpuio v0.2.0
[INFO] [stderr]    Compiling volatile v0.2.6
[INFO] [stderr]    Compiling pc-keyboard v0.5.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cpuio-0.2.0/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(asm, const_fn, no_std)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `cpuio`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "29536025e5d2a0d301b5a7761847c6219addb477cd20d1af079dd690e6cfb795"`
[INFO] running `"docker" "rm" "-f" "29536025e5d2a0d301b5a7761847c6219addb477cd20d1af079dd690e6cfb795"`
[INFO] [stdout] 29536025e5d2a0d301b5a7761847c6219addb477cd20d1af079dd690e6cfb795