[INFO] cloning repository https://github.com/hamlet-lee/auto-finger-arrangement
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hamlet-lee/auto-finger-arrangement" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamlet-lee%2Fauto-finger-arrangement", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamlet-lee%2Fauto-finger-arrangement'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10bdb18bf20492ba29aa8e334b17467efa873961
[INFO] checking hamlet-lee/auto-finger-arrangement against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamlet-lee%2Fauto-finger-arrangement" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hamlet-lee/auto-finger-arrangement on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hamlet-lee/auto-finger-arrangement
[INFO] finished tweaking git repo https://github.com/hamlet-lee/auto-finger-arrangement
[INFO] tweaked toml for git repo https://github.com/hamlet-lee/auto-finger-arrangement written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/hamlet-lee/auto-finger-arrangement already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bdf65a565d668e2940ccb9befcf6027a32e14fecdf539b82770a0361d8992ae
[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" "9bdf65a565d668e2940ccb9befcf6027a32e14fecdf539b82770a0361d8992ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bdf65a565d668e2940ccb9befcf6027a32e14fecdf539b82770a0361d8992ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bdf65a565d668e2940ccb9befcf6027a32e14fecdf539b82770a0361d8992ae", kill_on_drop: false }`
[INFO] [stdout] 9bdf65a565d668e2940ccb9befcf6027a32e14fecdf539b82770a0361d8992ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fa5884a88a0eb2966a1b09a50552449af96ad754d348f1dc793ab5217e8b721f
[INFO] running `Command { std: "docker" "start" "-a" "fa5884a88a0eb2966a1b09a50552449af96ad754d348f1dc793ab5217e8b721f", kill_on_drop: false }`
[INFO] [stderr]     Checking auto-finger-arrangement v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `paragraph1`
[INFO] [stdout]    --> src/main.rs:523:9
[INFO] [stdout]     |
[INFO] [stdout] 523 |     let paragraph1 = vec!(
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paragraph1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paragraph2`
[INFO] [stdout]    --> src/main.rs:535:9
[INFO] [stdout]     |
[INFO] [stdout] 535 |     let paragraph2 = vec!(
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paragraph2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paragraph3`
[INFO] [stdout]    --> src/main.rs:546:9
[INFO] [stdout]     |
[INFO] [stdout] 546 |     let paragraph3 = vec!(
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paragraph3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paragraph1`
[INFO] [stdout]    --> src/main.rs:523:9
[INFO] [stdout]     |
[INFO] [stdout] 523 |     let paragraph1 = vec!(
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paragraph1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paragraph2`
[INFO] [stdout]    --> src/main.rs:535:9
[INFO] [stdout]     |
[INFO] [stdout] 535 |     let paragraph2 = vec!(
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paragraph2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paragraph3`
[INFO] [stdout]    --> src/main.rs:546:9
[INFO] [stdout]     |
[INFO] [stdout] 546 |     let paragraph3 = vec!(
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paragraph3`
[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 0.71s
[INFO] running `Command { std: "docker" "inspect" "fa5884a88a0eb2966a1b09a50552449af96ad754d348f1dc793ab5217e8b721f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa5884a88a0eb2966a1b09a50552449af96ad754d348f1dc793ab5217e8b721f", kill_on_drop: false }`
[INFO] [stdout] fa5884a88a0eb2966a1b09a50552449af96ad754d348f1dc793ab5217e8b721f