[INFO] cloning repository https://github.com/tehpsy/BocoSolver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tehpsy/BocoSolver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehpsy%2FBocoSolver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehpsy%2FBocoSolver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91543c9a2c8faae701513573e95ffd286404a67c
[INFO] checking tehpsy/BocoSolver against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftehpsy%2FBocoSolver" "/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/tehpsy/BocoSolver on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tehpsy/BocoSolver
[INFO] finished tweaking git repo https://github.com/tehpsy/BocoSolver
[INFO] tweaked toml for git repo https://github.com/tehpsy/BocoSolver written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tehpsy/BocoSolver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-iterator-derive v0.6.0
[INFO] [stderr]   Downloaded enum-iterator v0.6.0
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25471d4ef86c4d70f6facd679d42cc09a2bfb7f7f2613d8f8fdf82b5c6588332
[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" "25471d4ef86c4d70f6facd679d42cc09a2bfb7f7f2613d8f8fdf82b5c6588332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25471d4ef86c4d70f6facd679d42cc09a2bfb7f7f2613d8f8fdf82b5c6588332", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25471d4ef86c4d70f6facd679d42cc09a2bfb7f7f2613d8f8fdf82b5c6588332", kill_on_drop: false }`
[INFO] [stdout] 25471d4ef86c4d70f6facd679d42cc09a2bfb7f7f2613d8f8fdf82b5c6588332
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c021e5a6dfd52ecfdc3b3c057d99247716b09497092ac85e0fcdb94f4de493c
[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" "9c021e5a6dfd52ecfdc3b3c057d99247716b09497092ac85e0fcdb94f4de493c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking boco_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `maplit::hashset`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use maplit::hashset;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 15.66s
[INFO] running `Command { std: "docker" "inspect" "9c021e5a6dfd52ecfdc3b3c057d99247716b09497092ac85e0fcdb94f4de493c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c021e5a6dfd52ecfdc3b3c057d99247716b09497092ac85e0fcdb94f4de493c", kill_on_drop: false }`
[INFO] [stdout] 9c021e5a6dfd52ecfdc3b3c057d99247716b09497092ac85e0fcdb94f4de493c