[INFO] cloning repository https://github.com/scott-ad-riley/rusty-lunch-of-wasm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scott-ad-riley/rusty-lunch-of-wasm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott-ad-riley%2Frusty-lunch-of-wasm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott-ad-riley%2Frusty-lunch-of-wasm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ccfbf086afb5ea1bf8077d5fd136eebf0a8e2cd
[INFO] checking scott-ad-riley/rusty-lunch-of-wasm against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott-ad-riley%2Frusty-lunch-of-wasm" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scott-ad-riley/rusty-lunch-of-wasm on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/scott-ad-riley/rusty-lunch-of-wasm
[INFO] finished tweaking git repo https://github.com/scott-ad-riley/rusty-lunch-of-wasm
[INFO] tweaked toml for git repo https://github.com/scott-ad-riley/rusty-lunch-of-wasm written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/scott-ad-riley/rusty-lunch-of-wasm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0d504483550127c3949fbc66595bea552b0d876ab07a9b2ce8ec49b254175f5
[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" "b0d504483550127c3949fbc66595bea552b0d876ab07a9b2ce8ec49b254175f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0d504483550127c3949fbc66595bea552b0d876ab07a9b2ce8ec49b254175f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0d504483550127c3949fbc66595bea552b0d876ab07a9b2ce8ec49b254175f5", kill_on_drop: false }`
[INFO] [stdout] b0d504483550127c3949fbc66595bea552b0d876ab07a9b2ce8ec49b254175f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 554b53f40e850d5f8016d91bc1f82bbf254ece098e9a47e7380f7640cfa5971e
[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" "554b53f40e850d5f8016d91bc1f82bbf254ece098e9a47e7380f7640cfa5971e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking serde v1.0.25
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking rand v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.8
[INFO] [stderr]     Checking stdweb v0.2.0
[INFO] [stderr]     Checking rusty-lunch-of-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `choice`
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let choice = rng.choose(&FOOD_PLACES).unwrap();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_choice`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `choice`
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let choice = rng.choose(&FOOD_PLACES).unwrap();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_choice`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.94s
[INFO] running `Command { std: "docker" "inspect" "554b53f40e850d5f8016d91bc1f82bbf254ece098e9a47e7380f7640cfa5971e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "554b53f40e850d5f8016d91bc1f82bbf254ece098e9a47e7380f7640cfa5971e", kill_on_drop: false }`
[INFO] [stdout] 554b53f40e850d5f8016d91bc1f82bbf254ece098e9a47e7380f7640cfa5971e