[INFO] fetching crate symbolic-mgu 0.1.0-alpha.15...
[INFO] checking symbolic-mgu-0.1.0-alpha.15 against master#08cd08fbef8c6663b052d8d9e4930d5696cbb8a7 for 150662-leaf-spurious
[INFO] extracting crate symbolic-mgu 0.1.0-alpha.15 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate symbolic-mgu 0.1.0-alpha.15
[INFO] finished tweaking crates.io crate symbolic-mgu 0.1.0-alpha.15
[INFO] tweaked toml for crates.io crate symbolic-mgu 0.1.0-alpha.15 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate symbolic-mgu 0.1.0-alpha.15 on toolchain 08cd08fbef8c6663b052d8d9e4930d5696cbb8a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate symbolic-mgu 0.1.0-alpha.15 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" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.20
[INFO] [stderr]   Downloaded unarray v0.1.4
[INFO] [stderr]   Downloaded zmij v1.0.2
[INFO] [stderr]   Downloaded wait-timeout v0.2.1
[INFO] [stderr]   Downloaded rand_xorshift v0.3.0
[INFO] [stderr]   Downloaded rusty-fork v0.3.1
[INFO] [stderr]   Downloaded proptest v1.5.0
[INFO] [stderr]   Downloaded syn v2.0.108
[INFO] [stderr]   Downloaded libc v0.2.177
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc0dfcc5c8a09b838dde7a9d3bee3673da2e518ed085283ed63c7facbd661e10
[INFO] running `Command { std: "docker" "start" "-a" "fc0dfcc5c8a09b838dde7a9d3bee3673da2e518ed085283ed63c7facbd661e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc0dfcc5c8a09b838dde7a9d3bee3673da2e518ed085283ed63c7facbd661e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc0dfcc5c8a09b838dde7a9d3bee3673da2e518ed085283ed63c7facbd661e10", kill_on_drop: false }`
[INFO] [stdout] fc0dfcc5c8a09b838dde7a9d3bee3673da2e518ed085283ed63c7facbd661e10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16fab7d29e09f720841410c8d7653ad6efd6b352ae43963a72459a26945c424e
[INFO] running `Command { std: "docker" "start" "-a" "16fab7d29e09f720841410c8d7653ad6efd6b352ae43963a72459a26945c424e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling unicode-ident v1.0.20
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]     Checking bitflags v2.10.0
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling symbolic-mgu v0.1.0-alpha.15 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking wait-timeout v0.2.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]     Checking tempfile v3.23.0
[INFO] [stderr]     Checking rusty-fork v0.3.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking proptest v1.5.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]     Checking strum v0.27.2
[INFO] [stdout] warning: feature `doc_cfg` is declared but not used
[INFO] [stdout]   --> src/lib.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![cfg_attr(nightly, feature(doc_cfg))]
[INFO] [stdout]    |                              ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `doc_cfg` is declared but not used
[INFO] [stdout]   --> src/lib.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![cfg_attr(nightly, feature(doc_cfg))]
[INFO] [stdout]    |                              ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.69s
[INFO] running `Command { std: "docker" "inspect" "16fab7d29e09f720841410c8d7653ad6efd6b352ae43963a72459a26945c424e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16fab7d29e09f720841410c8d7653ad6efd6b352ae43963a72459a26945c424e", kill_on_drop: false }`
[INFO] [stdout] 16fab7d29e09f720841410c8d7653ad6efd6b352ae43963a72459a26945c424e