[INFO] updating cached repository https://github.com/alhaad/vshnu-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4439f972a4dc8bc8d74622fc6af1554c3403f0a
[INFO] checking alhaad/vshnu-os against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falhaad%2Fvshnu-os" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alhaad/vshnu-os on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alhaad/vshnu-os
[INFO] finished tweaking git repo https://github.com/alhaad/vshnu-os
[INFO] tweaked toml for git repo https://github.com/alhaad/vshnu-os written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/alhaad/vshnu-os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--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-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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efb272018c769cbb475c927d9d807a1fcb05c8bbb2c39c6f9941f0a46a6224ba
[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" "efb272018c769cbb475c927d9d807a1fcb05c8bbb2c39c6f9941f0a46a6224ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efb272018c769cbb475c927d9d807a1fcb05c8bbb2c39c6f9941f0a46a6224ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb272018c769cbb475c927d9d807a1fcb05c8bbb2c39c6f9941f0a46a6224ba", kill_on_drop: false }`
[INFO] [stdout] efb272018c769cbb475c927d9d807a1fcb05c8bbb2c39c6f9941f0a46a6224ba
[INFO] running `Command { std: "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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3291c8482820635ad6375cf5d16ac917031b7060e6bfe41a522e281b5969a1e5
[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" "3291c8482820635ad6375cf5d16ac917031b7060e6bfe41a522e281b5969a1e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiler_builtins v0.1.0 (https://github.com/rust-lang-nursery/compiler-builtins#67e0908d)
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stdout] error[E0545]: `issue` must be a non-zero numeric string or "none"
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/compiler-builtins-ec094dc45a0179c8/67e0908/src/lib.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             issue = "0")]
[INFO] [stdout]    |             ^^^^^^^^---
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     `issue` must not be "0", use "none" instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler_builtins`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "3291c8482820635ad6375cf5d16ac917031b7060e6bfe41a522e281b5969a1e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3291c8482820635ad6375cf5d16ac917031b7060e6bfe41a522e281b5969a1e5", kill_on_drop: false }`
[INFO] [stdout] 3291c8482820635ad6375cf5d16ac917031b7060e6bfe41a522e281b5969a1e5