[INFO] fetching crate mca-cuboids 0.2.0...
[INFO] testing mca-cuboids-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mca-cuboids 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate mca-cuboids 0.2.0
[INFO] finished tweaking crates.io crate mca-cuboids 0.2.0
[INFO] tweaked toml for crates.io crate mca-cuboids 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mca-cuboids 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 151 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding fastanvil v0.26.3 (available: v0.32.0)
[INFO] [stderr]       Adding pprof v0.10.1 (available: v0.15.0)
[INFO] [stderr]       Adding rustc-hash v1.1.0 (available: v2.1.1)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded symbolic-common v9.2.1
[INFO] [stderr]   Downloaded pprof v0.10.1
[INFO] [stderr]   Downloaded fastnbt v2.6.0
[INFO] [stderr]   Downloaded nix v0.24.3
[INFO] [stderr]   Downloaded symbolic-demangle v9.2.1
[INFO] [stderr]   Downloaded fastanvil v0.26.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5693d419def855e9cf40ef126d4e4d20657819537b97052e03c4da1c740963a7
[INFO] running `Command { std: "docker" "start" "-a" "5693d419def855e9cf40ef126d4e4d20657819537b97052e03c4da1c740963a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5693d419def855e9cf40ef126d4e4d20657819537b97052e03c4da1c740963a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5693d419def855e9cf40ef126d4e4d20657819537b97052e03c4da1c740963a7", kill_on_drop: false }`
[INFO] [stdout] 5693d419def855e9cf40ef126d4e4d20657819537b97052e03c4da1c740963a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] fc7ba1b5fb78029921e88c433b62905e3e85e9bfa833a3356f4f0b92eb6ba521
[INFO] running `Command { std: "docker" "start" "-a" "fc7ba1b5fb78029921e88c433b62905e3e85e9bfa833a3356f4f0b92eb6ba521", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling cesu8 v1.1.0
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling bit_field v0.10.3
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling fastnbt v2.6.0
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling num_enum v0.5.11
[INFO] [stderr]    Compiling fastanvil v0.26.3
[INFO] [stderr]    Compiling mca-cuboids v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(test)]
[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 `mca-cuboids` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fc7ba1b5fb78029921e88c433b62905e3e85e9bfa833a3356f4f0b92eb6ba521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc7ba1b5fb78029921e88c433b62905e3e85e9bfa833a3356f4f0b92eb6ba521", kill_on_drop: false }`
[INFO] [stdout] fc7ba1b5fb78029921e88c433b62905e3e85e9bfa833a3356f4f0b92eb6ba521