[INFO] fetching crate heuristic-graph-coloring 0.1.0...
[INFO] testing heuristic-graph-coloring-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate heuristic-graph-coloring 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate heuristic-graph-coloring 0.1.0
[INFO] finished tweaking crates.io crate heuristic-graph-coloring 0.1.0
[INFO] tweaked toml for crates.io crate heuristic-graph-coloring 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate heuristic-graph-coloring 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate heuristic-graph-coloring 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded poloto v15.2.0
[INFO] [stderr]   Downloaded tagger v4.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0484cf16392d8fc5dd91d202052a8505911fc9c4202349a4a8b1f8169b946e2a
[INFO] running `Command { std: "docker" "start" "-a" "0484cf16392d8fc5dd91d202052a8505911fc9c4202349a4a8b1f8169b946e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0484cf16392d8fc5dd91d202052a8505911fc9c4202349a4a8b1f8169b946e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0484cf16392d8fc5dd91d202052a8505911fc9c4202349a4a8b1f8169b946e2a", kill_on_drop: false }`
[INFO] [stdout] 0484cf16392d8fc5dd91d202052a8505911fc9c4202349a4a8b1f8169b946e2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7fd7929901c07090a41cd1619bd242938da693cd2d63f4cbaecc628156c004c
[INFO] running `Command { std: "docker" "start" "-a" "c7fd7929901c07090a41cd1619bd242938da693cd2d63f4cbaecc628156c004c", kill_on_drop: false }`
[INFO] [stderr]    Compiling heuristic-graph-coloring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Rlf` is never constructed
[INFO] [stdout]    --> src/lib.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 | struct Rlf {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "c7fd7929901c07090a41cd1619bd242938da693cd2d63f4cbaecc628156c004c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7fd7929901c07090a41cd1619bd242938da693cd2d63f4cbaecc628156c004c", kill_on_drop: false }`
[INFO] [stdout] c7fd7929901c07090a41cd1619bd242938da693cd2d63f4cbaecc628156c004c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 148efe4025bb571f2f7de7b9f322527f983a45d6163063280b73742fd1bd17ec
[INFO] running `Command { std: "docker" "start" "-a" "148efe4025bb571f2f7de7b9f322527f983a45d6163063280b73742fd1bd17ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling tagger v4.3.3
[INFO] [stdout] warning: struct `Rlf` is never constructed
[INFO] [stdout]    --> src/lib.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 | struct Rlf {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling poloto v15.2.0
[INFO] [stderr]    Compiling heuristic-graph-coloring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Rlf` is never constructed
[INFO] [stdout]    --> src/lib.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 | struct Rlf {
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.28s
[INFO] running `Command { std: "docker" "inspect" "148efe4025bb571f2f7de7b9f322527f983a45d6163063280b73742fd1bd17ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "148efe4025bb571f2f7de7b9f322527f983a45d6163063280b73742fd1bd17ec", kill_on_drop: false }`
[INFO] [stdout] 148efe4025bb571f2f7de7b9f322527f983a45d6163063280b73742fd1bd17ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cd350e2775962eb203487613d6aed00378bfd7c6cda996828e35f2381c963513
[INFO] running `Command { std: "docker" "start" "-a" "cd350e2775962eb203487613d6aed00378bfd7c6cda996828e35f2381c963513", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Rlf` is never constructed
[INFO] [stderr]    --> src/lib.rs:278:8
[INFO] [stderr]     |
[INFO] [stderr] 278 | struct Rlf {
[INFO] [stderr]     |        ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `heuristic-graph-coloring` (lib) generated 1 warning
[INFO] [stderr] warning: `heuristic-graph-coloring` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/heuristic_graph_coloring-2891cef6f9dd1fda)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests heuristic_graph_coloring
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cd350e2775962eb203487613d6aed00378bfd7c6cda996828e35f2381c963513", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd350e2775962eb203487613d6aed00378bfd7c6cda996828e35f2381c963513", kill_on_drop: false }`
[INFO] [stdout] cd350e2775962eb203487613d6aed00378bfd7c6cda996828e35f2381c963513