[INFO] fetching crate tobz1000-petgraph 0.5.1-tobz1000...
[INFO] checking tobz1000-petgraph-0.5.1-tobz1000 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate tobz1000-petgraph 0.5.1-tobz1000 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tobz1000-petgraph 0.5.1-tobz1000 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tobz1000-petgraph 0.5.1-tobz1000
[INFO] finished tweaking crates.io crate tobz1000-petgraph 0.5.1-tobz1000
[INFO] tweaked toml for crates.io crate tobz1000-petgraph 0.5.1-tobz1000 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--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-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 564ff305752e2e524c36687eedf58ce12166bce613bef8c78fd664e591e76c01
[INFO] running `Command { std: "docker" "start" "-a" "564ff305752e2e524c36687eedf58ce12166bce613bef8c78fd664e591e76c01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "564ff305752e2e524c36687eedf58ce12166bce613bef8c78fd664e591e76c01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "564ff305752e2e524c36687eedf58ce12166bce613bef8c78fd664e591e76c01", kill_on_drop: false }`
[INFO] [stdout] 564ff305752e2e524c36687eedf58ce12166bce613bef8c78fd664e591e76c01
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6bc68cc166d5ba0b79c570e415c6ebecb4a7acb3d56b312f8a4087108b2b842
[INFO] running `Command { std: "docker" "start" "-a" "b6bc68cc166d5ba0b79c570e415c6ebecb4a7acb3d56b312f8a4087108b2b842", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking fixedbitset v0.3.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking odds v0.2.26
[INFO] [stderr]     Checking defmac v0.1.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking tobz1000-petgraph v0.5.1-tobz1000 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `first_error`
[INFO] [stdout]    --> src/csr.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     first_error: (usize, usize),
[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: unnecessary trailing semicolon
[INFO] [stdout]     --> tests/graph.rs:1827:6
[INFO] [stdout]      |
[INFO] [stdout] 1827 |     };
[INFO] [stdout]      |      ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `first_error`
[INFO] [stdout]    --> src/csr.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     first_error: (usize, usize),
[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: `a`
[INFO] [stdout]     --> tests/graph.rs:1825:9
[INFO] [stdout]      |
[INFO] [stdout] 1825 |         a: i32,
[INFO] [stdout]      |         ^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]     --> tests/graph.rs:1826:9
[INFO] [stdout]      |
[INFO] [stdout] 1826 |         b: &'static str,
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.20s
[INFO] running `Command { std: "docker" "inspect" "b6bc68cc166d5ba0b79c570e415c6ebecb4a7acb3d56b312f8a4087108b2b842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6bc68cc166d5ba0b79c570e415c6ebecb4a7acb3d56b312f8a4087108b2b842", kill_on_drop: false }`
[INFO] [stdout] b6bc68cc166d5ba0b79c570e415c6ebecb4a7acb3d56b312f8a4087108b2b842