[INFO] fetching crate zuqe 0.5.0...
[INFO] testing zuqe-0.5.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate zuqe 0.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate zuqe 0.5.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate zuqe 0.5.0
[INFO] tweaked toml for crates.io crate zuqe 0.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zuqe 0.5.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zuqe 0.5.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db8b2ea0c40909a6ebbee50d1635c5ad7ffed2b4f099d57a516664d1cf7c9c08
[INFO] running `Command { std: "docker" "start" "-a" "db8b2ea0c40909a6ebbee50d1635c5ad7ffed2b4f099d57a516664d1cf7c9c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db8b2ea0c40909a6ebbee50d1635c5ad7ffed2b4f099d57a516664d1cf7c9c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db8b2ea0c40909a6ebbee50d1635c5ad7ffed2b4f099d57a516664d1cf7c9c08", kill_on_drop: false }`
[INFO] [stdout] db8b2ea0c40909a6ebbee50d1635c5ad7ffed2b4f099d57a516664d1cf7c9c08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d837aef3d3d21ba68a78781351b60769e23874e1829105561f962cbc9fc65d6
[INFO] running `Command { std: "docker" "start" "-a" "3d837aef3d3d21ba68a78781351b60769e23874e1829105561f962cbc9fc65d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling cc v1.2.60
[INFO] [stderr]    Compiling libloading v0.8.9
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling bindgen v0.68.1
[INFO] [stderr]    Compiling home v0.5.12
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling gc-lite-macros v0.1.0
[INFO] [stderr]    Compiling gc-lite v0.4.2
[INFO] [stderr]    Compiling zuqe v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling fallible_collections v0.5.1
[INFO] [stdout] warning: field `class_name` is never read
[INFO] [stdout]    --> build_stdclass.rs:179:5
[INFO] [stdout]     |
[INFO] [stdout] 178 | struct ClassInfo {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 179 |     class_name: &'static str,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ClassInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr] error: failed to run custom build command for `zuqe v0.5.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/zuqe-44c1c0d29795b263/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   rustfmt failed: error: 'rustfmt' is not installed for the custom toolchain 'dec9417b8611e34e787a3e4c37686b5131f9e5c5'.
[INFO] [stderr]   note: this is a custom toolchain, which cannot use `rustup component add`
[INFO] [stderr]   help: if you built this toolchain from source, and used `rustup toolchain link`, then you may be able to build the component with `x.py`
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3d837aef3d3d21ba68a78781351b60769e23874e1829105561f962cbc9fc65d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d837aef3d3d21ba68a78781351b60769e23874e1829105561f962cbc9fc65d6", kill_on_drop: false }`
[INFO] [stdout] 3d837aef3d3d21ba68a78781351b60769e23874e1829105561f962cbc9fc65d6