[INFO] fetching crate netview 0.4.0...
[INFO] building netview-0.4.0 against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] extracting crate netview 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate netview 0.4.0 on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate netview 0.4.0
[INFO] finished tweaking crates.io crate netview 0.4.0
[INFO] tweaked toml for crates.io crate netview 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate netview 0.4.0 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 704fe1a6bbdf93c595673980d231387ed0ed3104488f020ff0f0ac697d977b19
[INFO] running `Command { std: "docker" "start" "-a" "704fe1a6bbdf93c595673980d231387ed0ed3104488f020ff0f0ac697d977b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "704fe1a6bbdf93c595673980d231387ed0ed3104488f020ff0f0ac697d977b19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704fe1a6bbdf93c595673980d231387ed0ed3104488f020ff0f0ac697d977b19", kill_on_drop: false }`
[INFO] [stdout] 704fe1a6bbdf93c595673980d231387ed0ed3104488f020ff0f0ac697d977b19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61e9151a8724488776e3bd31b229eacd99809ed17f03132a9c3fc0abc1c083ce
[INFO] running `Command { std: "docker" "start" "-a" "61e9151a8724488776e3bd31b229eacd99809ed17f03132a9c3fc0abc1c083ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling pkg-config v0.3.31
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[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling adler2 v2.0.0
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[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling syn v1.0.109
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[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling signal-hook v0.3.17
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[INFO] [stderr]    Compiling either v1.13.0
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[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling signal-hook-mio v0.2.4
[INFO] [stderr]    Compiling parking_lot v0.12.3
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[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling clap_builder v4.5.18
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling ansi-parser v0.8.0
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling lzma-sys v0.1.20
[INFO] [stderr]    Compiling ansi-str v0.1.1
[INFO] [stderr]    Compiling xz2 v0.1.7
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[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling bzip2 v0.4.4
[INFO] [stderr]    Compiling tabled v0.5.0
[INFO] [stderr]    Compiling needletail v0.5.1
[INFO] [stderr]    Compiling bgzip v0.2.2
[INFO] [stderr]    Compiling clap v4.5.18
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling env_logger v0.10.2
[INFO] [stderr]    Compiling zstd v0.12.4
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[INFO] [stderr]    Compiling csv v1.3.0
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling netview v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `labels`
[INFO] [stdout]   --> src/netview.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn label_nodes(&self, labels: Vec<Option<String>>) -> Result<(), NetviewError> {
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_labels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.37s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "61e9151a8724488776e3bd31b229eacd99809ed17f03132a9c3fc0abc1c083ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61e9151a8724488776e3bd31b229eacd99809ed17f03132a9c3fc0abc1c083ce", kill_on_drop: false }`
[INFO] [stdout] 61e9151a8724488776e3bd31b229eacd99809ed17f03132a9c3fc0abc1c083ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42afcceb0cf4d9e7de6098e32c1983bacf5846ac54ae00207b9c5caa6b8e358e
[INFO] running `Command { std: "docker" "start" "-a" "42afcceb0cf4d9e7de6098e32c1983bacf5846ac54ae00207b9c5caa6b8e358e", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `labels`
[INFO] [stdout]   --> src/netview.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn label_nodes(&self, labels: Vec<Option<String>>) -> Result<(), NetviewError> {
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_labels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling netview v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `labels`
[INFO] [stdout]   --> src/netview.rs:17:27
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn label_nodes(&self, labels: Vec<Option<String>>) -> Result<(), NetviewError> {
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_labels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `setup_test_graph` is never used
[INFO] [stdout]    --> src/mknn.rs:702:8
[INFO] [stdout]     |
[INFO] [stdout] 702 |     fn setup_test_graph() -> Graph<&'static str, i32> {
[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 2.27s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "42afcceb0cf4d9e7de6098e32c1983bacf5846ac54ae00207b9c5caa6b8e358e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42afcceb0cf4d9e7de6098e32c1983bacf5846ac54ae00207b9c5caa6b8e358e", kill_on_drop: false }`
[INFO] [stdout] 42afcceb0cf4d9e7de6098e32c1983bacf5846ac54ae00207b9c5caa6b8e358e