[INFO] cloning repository https://github.com/ArtifactCabinet/rust-workbench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArtifactCabinet/rust-workbench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtifactCabinet%2Frust-workbench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtifactCabinet%2Frust-workbench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9d63184a187f5d239f87830b146524b94fd0bf5
[INFO] checking ArtifactCabinet/rust-workbench against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtifactCabinet%2Frust-workbench" "/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/ArtifactCabinet/rust-workbench on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ArtifactCabinet/rust-workbench
[INFO] finished tweaking git repo https://github.com/ArtifactCabinet/rust-workbench
[INFO] tweaked toml for git repo https://github.com/ArtifactCabinet/rust-workbench written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ArtifactCabinet/rust-workbench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb67d4e5a4da45a2608433c0bee21ea87d3137d8b382d1aa78ae29d9938ae9c3
[INFO] running `Command { std: "docker" "start" "-a" "eb67d4e5a4da45a2608433c0bee21ea87d3137d8b382d1aa78ae29d9938ae9c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb67d4e5a4da45a2608433c0bee21ea87d3137d8b382d1aa78ae29d9938ae9c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb67d4e5a4da45a2608433c0bee21ea87d3137d8b382d1aa78ae29d9938ae9c3", kill_on_drop: false }`
[INFO] [stdout] eb67d4e5a4da45a2608433c0bee21ea87d3137d8b382d1aa78ae29d9938ae9c3
[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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92552f0e84ded2253e5362786e4c0f51303e337c7df77a00b3956120bae37734
[INFO] running `Command { std: "docker" "start" "-a" "92552f0e84ded2253e5362786e4c0f51303e337c7df77a00b3956120bae37734", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-workbench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `names`
[INFO] [stdout]   --> src/p02_practice.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let names = vec![1,2,3,4,5];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_names`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `names`
[INFO] [stdout]   --> src/p02_practice.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let names = vec![1,2,3,4,5];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_names`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add`
[INFO] [stdout]  --> src/p02_practice.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn add (a:i64,b:i64) -> i64 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `filter`
[INFO] [stdout]   --> src/p02_practice.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn filter(){
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `filter`
[INFO] [stdout]   --> src/p02_practice.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn filter(){
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "92552f0e84ded2253e5362786e4c0f51303e337c7df77a00b3956120bae37734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92552f0e84ded2253e5362786e4c0f51303e337c7df77a00b3956120bae37734", kill_on_drop: false }`
[INFO] [stdout] 92552f0e84ded2253e5362786e4c0f51303e337c7df77a00b3956120bae37734