[INFO] fetching crate coffeeldr 0.3.1...
[INFO] testing coffeeldr-0.3.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate coffeeldr 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate coffeeldr 0.3.1
[INFO] finished tweaking crates.io crate coffeeldr 0.3.1
[INFO] tweaked toml for crates.io crate coffeeldr 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate coffeeldr 0.3.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate coffeeldr 0.3.1 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded array-init v2.1.0
[INFO] [stderr]   Downloaded spin v0.10.0
[INFO] [stderr]   Downloaded printf-compat v0.2.0
[INFO] [stderr]   Downloaded dinvk v0.2.6
[INFO] [stderr]   Downloaded binrw_derive v0.15.0
[INFO] [stderr]   Downloaded binrw v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f19c28c8f207beadd8df7202627c051c7a2130aef9405375c3f46f41191cf0c3
[INFO] running `Command { std: "docker" "start" "-a" "f19c28c8f207beadd8df7202627c051c7a2130aef9405375c3f46f41191cf0c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f19c28c8f207beadd8df7202627c051c7a2130aef9405375c3f46f41191cf0c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f19c28c8f207beadd8df7202627c051c7a2130aef9405375c3f46f41191cf0c3", kill_on_drop: false }`
[INFO] [stdout] f19c28c8f207beadd8df7202627c051c7a2130aef9405375c3f46f41191cf0c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe9c6e197d433a779db1d909c0be990509524a84775292b333a1ce2956ad7add
[INFO] running `Command { std: "docker" "start" "-a" "fe9c6e197d433a779db1d909c0be990509524a84775292b333a1ce2956ad7add", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling binrw_derive v0.15.0
[INFO] [stderr]    Compiling binrw v0.15.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling array-init v2.1.0
[INFO] [stderr]    Compiling bytemuck v1.23.1
[INFO] [stderr]    Compiling obfstr v0.4.4
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling spin v0.10.0
[INFO] [stderr]    Compiling dinvk v0.2.6
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling printf-compat v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/printf-compat-0.2.0/src/lib.rs:115:1
[INFO] [stdout]     |
[INFO] [stdout] 115 | #![feature(c_variadic)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `printf-compat` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fe9c6e197d433a779db1d909c0be990509524a84775292b333a1ce2956ad7add", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe9c6e197d433a779db1d909c0be990509524a84775292b333a1ce2956ad7add", kill_on_drop: false }`
[INFO] [stdout] fe9c6e197d433a779db1d909c0be990509524a84775292b333a1ce2956ad7add