[INFO] cloning repository https://github.com/Akatsuki-py/flowchart.gb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Akatsuki-py/flowchart.gb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkatsuki-py%2Fflowchart.gb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkatsuki-py%2Fflowchart.gb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5490db2e47484879628de5b6c222672a4f9d271f
[INFO] checking Akatsuki-py/flowchart.gb against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkatsuki-py%2Fflowchart.gb" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Akatsuki-py/flowchart.gb on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Akatsuki-py/flowchart.gb
[INFO] finished tweaking git repo https://github.com/Akatsuki-py/flowchart.gb
[INFO] tweaked toml for git repo https://github.com/Akatsuki-py/flowchart.gb written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Akatsuki-py/flowchart.gb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", 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] facf5ced8f59cecfcb0b4ca1c142992be7cb05fff2ed13ae8a46a0e8977e1e73
[INFO] running `Command { std: "docker" "start" "-a" "facf5ced8f59cecfcb0b4ca1c142992be7cb05fff2ed13ae8a46a0e8977e1e73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "facf5ced8f59cecfcb0b4ca1c142992be7cb05fff2ed13ae8a46a0e8977e1e73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "facf5ced8f59cecfcb0b4ca1c142992be7cb05fff2ed13ae8a46a0e8977e1e73", kill_on_drop: false }`
[INFO] [stdout] facf5ced8f59cecfcb0b4ca1c142992be7cb05fff2ed13ae8a46a0e8977e1e73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "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] d17b84e8505533b8e998fb251363b42c47f63bc7137f9b752f39a1af2d505883
[INFO] running `Command { std: "docker" "start" "-a" "d17b84e8505533b8e998fb251363b42c47f63bc7137f9b752f39a1af2d505883", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling nfd v0.0.4 (https://github.com/saurvs/nfd-rs.git#07578c5f)
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking flowchartgb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `cur_dir`
[INFO] [stdout]   --> src/analyzer.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     cur_dir: AbsPath,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cur_dir`
[INFO] [stdout]   --> src/analyzer.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     cur_dir: AbsPath,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.58s
[INFO] running `Command { std: "docker" "inspect" "d17b84e8505533b8e998fb251363b42c47f63bc7137f9b752f39a1af2d505883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d17b84e8505533b8e998fb251363b42c47f63bc7137f9b752f39a1af2d505883", kill_on_drop: false }`
[INFO] [stdout] d17b84e8505533b8e998fb251363b42c47f63bc7137f9b752f39a1af2d505883