[INFO] fetching crate fakelua 0.0.1...
[INFO] checking fakelua-0.0.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate fakelua 0.0.1 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate fakelua 0.0.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fakelua 0.0.1
[INFO] finished tweaking crates.io crate fakelua 0.0.1
[INFO] tweaked toml for crates.io crate fakelua 0.0.1 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate crates.io crate fakelua 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18221d3a29e1e0b38af07a90af3d9fa2a5590b8d785fa5fe468b0b71f3a5cdfd
[INFO] running `Command { std: "docker" "start" "-a" "18221d3a29e1e0b38af07a90af3d9fa2a5590b8d785fa5fe468b0b71f3a5cdfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18221d3a29e1e0b38af07a90af3d9fa2a5590b8d785fa5fe468b0b71f3a5cdfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18221d3a29e1e0b38af07a90af3d9fa2a5590b8d785fa5fe468b0b71f3a5cdfd", kill_on_drop: false }`
[INFO] [stdout] 18221d3a29e1e0b38af07a90af3d9fa2a5590b8d785fa5fe468b0b71f3a5cdfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0c93c7f6d82b4f02d3292587e740871300db23126b67dc9cba29892d86a3db1
[INFO] running `Command { std: "docker" "start" "-a" "c0c93c7f6d82b4f02d3292587e740871300db23126b67dc9cba29892d86a3db1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking fakelua v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/fakelua.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut r = Lua { id: 1 };
[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] warning: field is never read: `id`
[INFO] [stdout]  --> src/fakelua.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     id: i32,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/fakelua.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut r = Lua { id: 1 };
[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] warning: field is never read: `id`
[INFO] [stdout]  --> src/fakelua.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     id: i32,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "c0c93c7f6d82b4f02d3292587e740871300db23126b67dc9cba29892d86a3db1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c93c7f6d82b4f02d3292587e740871300db23126b67dc9cba29892d86a3db1", kill_on_drop: false }`
[INFO] [stdout] c0c93c7f6d82b4f02d3292587e740871300db23126b67dc9cba29892d86a3db1
