[INFO] fetching crate graphrs 0.9.0...
[INFO] checking graphrs-0.9.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate graphrs 0.9.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate graphrs 0.9.0 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate graphrs 0.9.0
[INFO] finished tweaking crates.io crate graphrs 0.9.0
[INFO] tweaked toml for crates.io crate graphrs 0.9.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 50 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.12.1 (latest: v0.13.0)
[INFO] [stderr]       Adding nalgebra v0.29.0 (latest: v0.33.0)
[INFO] [stderr]       Adding nalgebra-macros v0.1.0 (latest: v0.2.2)
[INFO] [stderr]       Adding quick-xml v0.31.0 (latest: v0.36.1)
[INFO] [stderr]       Adding simba v0.6.0 (latest: v0.9.0)
[INFO] [stderr]       Adding statrs v0.16.1 (latest: v0.17.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.76)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded statrs v0.16.1
[INFO] [stderr]   Downloaded nalgebra-macros v0.1.0
[INFO] [stderr]   Downloaded simba v0.6.0
[INFO] [stderr]   Downloaded rand_distr v0.4.3
[INFO] [stderr]   Downloaded quick-xml v0.31.0
[INFO] [stderr]   Downloaded nalgebra v0.29.0
[INFO] [stderr]   Downloaded vec_to_array v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0c82b72988f908eaffc2edf840022486ca5f8aff9e99a64c01ca7904f4a8562
[INFO] running `Command { std: "docker" "start" "-a" "d0c82b72988f908eaffc2edf840022486ca5f8aff9e99a64c01ca7904f4a8562", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0c82b72988f908eaffc2edf840022486ca5f8aff9e99a64c01ca7904f4a8562", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0c82b72988f908eaffc2edf840022486ca5f8aff9e99a64c01ca7904f4a8562", kill_on_drop: false }`
[INFO] [stdout] d0c82b72988f908eaffc2edf840022486ca5f8aff9e99a64c01ca7904f4a8562
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2665ac97c974698cde37ce4985a16339c11438773c233629d341ad9cb7fcb75f
[INFO] running `Command { std: "docker" "start" "-a" "2665ac97c974698cde37ce4985a16339c11438773c233629d341ad9cb7fcb75f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking vec_to_array v0.2.3
[INFO] [stderr]     Checking quick-xml v0.31.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking simba v0.6.0
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]     Checking nalgebra v0.29.0
[INFO] [stderr]     Checking statrs v0.16.1
[INFO] [stderr]     Checking graphrs v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `to_vec` is never used
[INFO] [stdout]  --> src/ext/hashset.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait HashSetExt<T> {
[INFO] [stdout]   |           ---------- method in this trait
[INFO] [stdout] 6 |     fn to_vec(&self) -> Vec<T>;
[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: method `to_vec` is never used
[INFO] [stdout]  --> src/ext/hashset.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait HashSetExt<T> {
[INFO] [stdout]   |           ---------- method in this trait
[INFO] [stdout] 6 |     fn to_vec(&self) -> Vec<T>;
[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` profile [unoptimized + debuginfo] target(s) in 13.69s
[INFO] running `Command { std: "docker" "inspect" "2665ac97c974698cde37ce4985a16339c11438773c233629d341ad9cb7fcb75f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2665ac97c974698cde37ce4985a16339c11438773c233629d341ad9cb7fcb75f", kill_on_drop: false }`
[INFO] [stdout] 2665ac97c974698cde37ce4985a16339c11438773c233629d341ad9cb7fcb75f