[INFO] cloning repository https://github.com/icemini/rust-os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/icemini/rust-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficemini%2Frust-os"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficemini%2Frust-os'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 21153b7c7610ecf42a55686e4812fa2943f9269c
[INFO] checking icemini/rust-os against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ficemini%2Frust-os" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/icemini/rust-os on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/icemini/rust-os
[INFO] finished tweaking git repo https://github.com/icemini/rust-os
[INFO] tweaked toml for git repo https://github.com/icemini/rust-os written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/icemini/rust-os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d11d1302118f1af82ef29f2c649211cddfe11c54d852c80e7b375ce5f6acb03b
[INFO] running `"docker" "start" "-a" "d11d1302118f1af82ef29f2c649211cddfe11c54d852c80e7b375ce5f6acb03b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking spin v0.4.5
[INFO] [stderr]     Checking bit_field v0.7.0
[INFO] [stderr]     Checking volatile v0.1.0
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking once v0.3.3
[INFO] [stderr]     Checking multiboot2 v0.1.0
[INFO] [stderr] error: legacy asm! syntax is no longer supported
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.5/src/util.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     unsafe { asm!("pause" :::: "volatile"); }
[INFO] [stderr]   |              ----^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |              |
[INFO] [stderr]   |              help: replace with: `llvm_asm!`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `spin`.
[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" "d11d1302118f1af82ef29f2c649211cddfe11c54d852c80e7b375ce5f6acb03b"`
[INFO] running `"docker" "rm" "-f" "d11d1302118f1af82ef29f2c649211cddfe11c54d852c80e7b375ce5f6acb03b"`
[INFO] [stdout] d11d1302118f1af82ef29f2c649211cddfe11c54d852c80e7b375ce5f6acb03b