[INFO] cloning repository https://github.com/CookeyLang/CookeyLang-Bytecode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CookeyLang/CookeyLang-Bytecode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCookeyLang%2FCookeyLang-Bytecode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCookeyLang%2FCookeyLang-Bytecode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 343e215019c354cf7d3a40548e1c24a4e4b66804
[INFO] testing CookeyLang/CookeyLang-Bytecode against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCookeyLang%2FCookeyLang-Bytecode" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CookeyLang/CookeyLang-Bytecode on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CookeyLang/CookeyLang-Bytecode
[INFO] finished tweaking git repo https://github.com/CookeyLang/CookeyLang-Bytecode
[INFO] tweaked toml for git repo https://github.com/CookeyLang/CookeyLang-Bytecode written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/CookeyLang/CookeyLang-Bytecode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5f284cc5e12fad12407fecdb7956855afba547b9ae675f67d5306d41ba91865
[INFO] running `Command { std: "docker" "start" "-a" "a5f284cc5e12fad12407fecdb7956855afba547b9ae675f67d5306d41ba91865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5f284cc5e12fad12407fecdb7956855afba547b9ae675f67d5306d41ba91865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f284cc5e12fad12407fecdb7956855afba547b9ae675f67d5306d41ba91865", kill_on_drop: false }`
[INFO] [stdout] a5f284cc5e12fad12407fecdb7956855afba547b9ae675f67d5306d41ba91865
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12cb79a70ab193419485df33a592420923bc2074335ae6a4a95e6daa0d14d876
[INFO] running `Command { std: "docker" "start" "-a" "12cb79a70ab193419485df33a592420923bc2074335ae6a4a95e6daa0d14d876", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling loxvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/vm.rs:52:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |         for instruction in &self.chunk.code {
[INFO] [stdout]    |                            ----------------
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            immutable borrow occurs here
[INFO] [stdout]    |                            immutable borrow later used here
[INFO] [stdout] ...
[INFO] [stdout] 52 |                     self.push(val);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `vm` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let vm = VM::new(chunk);
[INFO] [stdout]    |         -- help: consider changing this to be mutable: `mut vm`
[INFO] [stdout] 17 |     vm.interpret();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0502, E0596.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `loxvm` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "12cb79a70ab193419485df33a592420923bc2074335ae6a4a95e6daa0d14d876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12cb79a70ab193419485df33a592420923bc2074335ae6a4a95e6daa0d14d876", kill_on_drop: false }`
[INFO] [stdout] 12cb79a70ab193419485df33a592420923bc2074335ae6a4a95e6daa0d14d876