[INFO] cloning repository https://github.com/Cancain/rust_arena
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cancain/rust_arena" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_arena", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_arena'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 139f1603368b07ced0078101143c2aafa2854a6a
[INFO] building Cancain/rust_arena against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCancain%2Frust_arena" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cancain/rust_arena on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Cancain/rust_arena
[INFO] finished tweaking git repo https://github.com/Cancain/rust_arena
[INFO] tweaked toml for git repo https://github.com/Cancain/rust_arena written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Cancain/rust_arena already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63f86babc94e3066da556538f905fc8fd0a07194de4a6bca3281b3a0d2a68484
[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" "63f86babc94e3066da556538f905fc8fd0a07194de4a6bca3281b3a0d2a68484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63f86babc94e3066da556538f905fc8fd0a07194de4a6bca3281b3a0d2a68484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f86babc94e3066da556538f905fc8fd0a07194de4a6bca3281b3a0d2a68484", kill_on_drop: false }`
[INFO] [stdout] 63f86babc94e3066da556538f905fc8fd0a07194de4a6bca3281b3a0d2a68484
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26dc970fb3c7bbb210d5fa4f31f8d7ea8fa274a966827a6239ae9a7b168f0f1b
[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" "26dc970fb3c7bbb210d5fa4f31f8d7ea8fa274a966827a6239ae9a7b168f0f1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.6
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling rust_arena v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `game_on` is never read
[INFO] [stdout]   --> src/characters.rs:34:29
[INFO] [stdout]    |
[INFO] [stdout] 34 |             "e" | "exit" => game_on = false,
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `game_on` is assigned to, but never used
[INFO] [stdout]   --> src/characters.rs:20:35
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn start_new_player_character(game_on: bool) -> Character {
[INFO] [stdout]    |                                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_game_on` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut game_on = true;
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0384]: cannot assign to immutable argument `game_on`
[INFO] [stdout]   --> src/characters.rs:34:29
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn start_new_player_character(game_on: bool) -> Character {
[INFO] [stdout]    |                                   ------- help: consider making this binding mutable: `mut game_on`
[INFO] [stdout] ...
[INFO] [stdout] 34 |             "e" | "exit" => game_on = false,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ cannot assign to immutable argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0384`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_arena`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "26dc970fb3c7bbb210d5fa4f31f8d7ea8fa274a966827a6239ae9a7b168f0f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26dc970fb3c7bbb210d5fa4f31f8d7ea8fa274a966827a6239ae9a7b168f0f1b", kill_on_drop: false }`
[INFO] [stdout] 26dc970fb3c7bbb210d5fa4f31f8d7ea8fa274a966827a6239ae9a7b168f0f1b
