[INFO] fetching crate chewy 2.0.0...
[INFO] checking chewy-2.0.0 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate chewy 2.0.0 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate chewy 2.0.0 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chewy 2.0.0
[INFO] finished tweaking crates.io crate chewy 2.0.0
[INFO] tweaked toml for crates.io crate chewy 2.0.0 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8959bcece878f0e79cd617a4ce3cd1f2ae9d98c797eccf45f0a5badf3ef52709
[INFO] running `Command { std: "docker" "start" "-a" "8959bcece878f0e79cd617a4ce3cd1f2ae9d98c797eccf45f0a5badf3ef52709", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8959bcece878f0e79cd617a4ce3cd1f2ae9d98c797eccf45f0a5badf3ef52709", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8959bcece878f0e79cd617a4ce3cd1f2ae9d98c797eccf45f0a5badf3ef52709", kill_on_drop: false }`
[INFO] [stdout] 8959bcece878f0e79cd617a4ce3cd1f2ae9d98c797eccf45f0a5badf3ef52709
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53bc66db9a4ce1bce2104eff00a1adee3158b3a5c0bbe131f33b773eb6d65807
[INFO] running `Command { std: "docker" "start" "-a" "53bc66db9a4ce1bce2104eff00a1adee3158b3a5c0bbe131f33b773eb6d65807", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking chewy v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]   --> src/main.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn execute1(stack: &mut Vec<i128>, op: String, b: i128) {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]   --> src/main.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn execute1(stack: &mut Vec<i128>, op: String, b: i128) {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[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 0.90s
[INFO] running `Command { std: "docker" "inspect" "53bc66db9a4ce1bce2104eff00a1adee3158b3a5c0bbe131f33b773eb6d65807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53bc66db9a4ce1bce2104eff00a1adee3158b3a5c0bbe131f33b773eb6d65807", kill_on_drop: false }`
[INFO] [stdout] 53bc66db9a4ce1bce2104eff00a1adee3158b3a5c0bbe131f33b773eb6d65807