[INFO] cloning repository https://github.com/akiekintveld/maize
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akiekintveld/maize" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakiekintveld%2Fmaize", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakiekintveld%2Fmaize'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 131bed3b1835aa132129c678603bbd7df02c266b
[INFO] checking akiekintveld/maize against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakiekintveld%2Fmaize" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akiekintveld/maize on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/akiekintveld/maize
[INFO] finished tweaking git repo https://github.com/akiekintveld/maize
[INFO] tweaked toml for git repo https://github.com/akiekintveld/maize written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/akiekintveld/maize already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mmio v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b481e1c22fe643afc2ab4a8d599d5177cff50cfaa4ecaaef25629f156408a595
[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" "b481e1c22fe643afc2ab4a8d599d5177cff50cfaa4ecaaef25629f156408a595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b481e1c22fe643afc2ab4a8d599d5177cff50cfaa4ecaaef25629f156408a595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b481e1c22fe643afc2ab4a8d599d5177cff50cfaa4ecaaef25629f156408a595", kill_on_drop: false }`
[INFO] [stdout] b481e1c22fe643afc2ab4a8d599d5177cff50cfaa4ecaaef25629f156408a595
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c70101895011165a030335ca852ab2bc392d0a28592553ffb22a7c4bde32262
[INFO] running `Command { std: "docker" "start" "-a" "3c70101895011165a030335ca852ab2bc392d0a28592553ffb22a7c4bde32262", kill_on_drop: false }`
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling maize v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking mmio v2.0.1
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stdout] error[E0601]: `main` function not found in crate `maize`
[INFO] [stdout]    --> src/main.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / //! A simple Unix-like operating system written in Rust for RISC-V. Based on
[INFO] [stdout] 2   | | //! MIT's [xv6](https://pdos.csail.mit.edu/6.828/2020/xv6.html), which is
[INFO] [stdout] 3   | | //! itself based on Bell Labs' Version 6 Unix.
[INFO] [stdout] 4   | |
[INFO] [stdout] ...   |
[INFO] [stdout] 130 | |     }
[INFO] [stdout] 131 | | }
[INFO] [stdout]     | |_^ consider adding a `main` function to `src/main.rs`
[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 E0601`.
[INFO] [stdout] 
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `maize`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "3c70101895011165a030335ca852ab2bc392d0a28592553ffb22a7c4bde32262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c70101895011165a030335ca852ab2bc392d0a28592553ffb22a7c4bde32262", kill_on_drop: false }`
[INFO] [stdout] 3c70101895011165a030335ca852ab2bc392d0a28592553ffb22a7c4bde32262