[INFO] cloning repository https://github.com/DevinBayly/processing_open_root
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DevinBayly/processing_open_root" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDevinBayly%2Fprocessing_open_root", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDevinBayly%2Fprocessing_open_root'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b613f203afbf7370022a2666fa2e782f703a81d
[INFO] checking DevinBayly/processing_open_root against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDevinBayly%2Fprocessing_open_root" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DevinBayly/processing_open_root on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DevinBayly/processing_open_root
[INFO] finished tweaking git repo https://github.com/DevinBayly/processing_open_root
[INFO] tweaked toml for git repo https://github.com/DevinBayly/processing_open_root written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/DevinBayly/processing_open_root already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f234119e1b77c24c1c07a815ebb75449071c8092d0f532a8aa5433e51d44b9b6
[INFO] running `Command { std: "docker" "start" "-a" "f234119e1b77c24c1c07a815ebb75449071c8092d0f532a8aa5433e51d44b9b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f234119e1b77c24c1c07a815ebb75449071c8092d0f532a8aa5433e51d44b9b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f234119e1b77c24c1c07a815ebb75449071c8092d0f532a8aa5433e51d44b9b6", kill_on_drop: false }`
[INFO] [stdout] f234119e1b77c24c1c07a815ebb75449071c8092d0f532a8aa5433e51d44b9b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52fb1a12e3e44740a09892eec7e1cff42375d9fc6be724d768f4fae6631256b8
[INFO] running `Command { std: "docker" "start" "-a" "52fb1a12e3e44740a09892eec7e1cff42375d9fc6be724d768f4fae6631256b8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking processing_roots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t_num`
[INFO] [stdout]    --> src/main.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     for t_num in 0..thread_num {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_num`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_num`
[INFO] [stdout]    --> src/main.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     for t_num in 0..thread_num {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_num`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `jh`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     jh: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `jh`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     jh: JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 toriginal_copy.send(minv);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 toriginal_copy.send(minv);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.75s
[INFO] running `Command { std: "docker" "inspect" "52fb1a12e3e44740a09892eec7e1cff42375d9fc6be724d768f4fae6631256b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fb1a12e3e44740a09892eec7e1cff42375d9fc6be724d768f4fae6631256b8", kill_on_drop: false }`
[INFO] [stdout] 52fb1a12e3e44740a09892eec7e1cff42375d9fc6be724d768f4fae6631256b8