[INFO] fetching crate fuzzcheck 0.13.0...
[INFO] testing fuzzcheck-0.13.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate fuzzcheck 0.13.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate fuzzcheck 0.13.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate fuzzcheck 0.13.0
[INFO] tweaked toml for crates.io crate fuzzcheck 0.13.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fuzzcheck 0.13.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 49 packages to latest compatible versions
[INFO] [stderr]       Adding ahash v0.7.8 (available: v0.8.12)
[INFO] [stderr]       Adding bit-vec v0.6.3 (available: v0.8.0)
[INFO] [stderr]       Adding fastrand v1.9.0 (available: v2.3.0)
[INFO] [stderr]       Adding md5 v0.7.0 (available: v0.8.0)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (available: v0.50.3)
[INFO] [stderr]       Adding object v0.29.0 (available: v0.37.3)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (available: v0.8.8)
[INFO] [stderr]       Adding ron v0.7.1 (available: v0.11.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fuzzcheck_common v0.13.0
[INFO] [stderr]   Downloaded fuzzcheck_mutators_derive v0.13.0
[INFO] [stderr]   Downloaded getopts v0.2.24
[INFO] [stderr]   Downloaded object v0.29.0
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 211aeb10f74dd3a8729cced5d1131acf11b14a6ab67d99210818de7379f6e706
[INFO] running `Command { std: "docker" "start" "-a" "211aeb10f74dd3a8729cced5d1131acf11b14a6ab67d99210818de7379f6e706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "211aeb10f74dd3a8729cced5d1131acf11b14a6ab67d99210818de7379f6e706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "211aeb10f74dd3a8729cced5d1131acf11b14a6ab67d99210818de7379f6e706", kill_on_drop: false }`
[INFO] [stdout] 211aeb10f74dd3a8729cced5d1131acf11b14a6ab67d99210818de7379f6e706
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ab929b82032b8b40493efeaa7153e52023a16c4d29eb2d67ed2fdd5e909f614
[INFO] running `Command { std: "docker" "start" "-a" "3ab929b82032b8b40493efeaa7153e52023a16c4d29eb2d67ed2fdd5e909f614", kill_on_drop: false }`
[INFO] [stderr]    Compiling libz-sys v1.1.22
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling getopts v0.2.24
[INFO] [stderr]    Compiling fuzzcheck v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling fuzzcheck_mutators_derive v0.13.0
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/fuzzcheck_mutators_derive-0.13.0/src/lib.rs:337:8
[INFO] [stdout]     |
[INFO] [stdout] 337 |     if let Some(ident) = attribute.path.get_ident()
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling object v0.29.0
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling flate2 v1.1.5
[INFO] [stderr]    Compiling fuzzcheck_common v0.13.0
[INFO] [stderr] error: could not compile `fuzzcheck_mutators_derive` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3ab929b82032b8b40493efeaa7153e52023a16c4d29eb2d67ed2fdd5e909f614", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ab929b82032b8b40493efeaa7153e52023a16c4d29eb2d67ed2fdd5e909f614", kill_on_drop: false }`
[INFO] [stdout] 3ab929b82032b8b40493efeaa7153e52023a16c4d29eb2d67ed2fdd5e909f614