[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 master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCookeyLang%2FCookeyLang-Bytecode" "/workspace/builds/worker-117/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-117/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CookeyLang/CookeyLang-Bytecode on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-117/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e21febab9f18a27c568dd46b94fbc032b265d2eeffb5d2d64f6ed8c7118a3bb8
[INFO] running `Command { std: "docker" "start" "-a" "e21febab9f18a27c568dd46b94fbc032b265d2eeffb5d2d64f6ed8c7118a3bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e21febab9f18a27c568dd46b94fbc032b265d2eeffb5d2d64f6ed8c7118a3bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e21febab9f18a27c568dd46b94fbc032b265d2eeffb5d2d64f6ed8c7118a3bb8", kill_on_drop: false }`
[INFO] [stdout] e21febab9f18a27c568dd46b94fbc032b265d2eeffb5d2d64f6ed8c7118a3bb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 807d968b3705eda38dfc627aada98ab8241b7064b2b252bb8488f09088b02d8b
[INFO] running `Command { std: "docker" "start" "-a" "807d968b3705eda38dfc627aada98ab8241b7064b2b252bb8488f09088b02d8b", 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" "807d968b3705eda38dfc627aada98ab8241b7064b2b252bb8488f09088b02d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "807d968b3705eda38dfc627aada98ab8241b7064b2b252bb8488f09088b02d8b", kill_on_drop: false }`
[INFO] [stdout] 807d968b3705eda38dfc627aada98ab8241b7064b2b252bb8488f09088b02d8b