[INFO] fetching crate caffe2op-sqrt 0.1.5-alpha.0...
[INFO] testing caffe2op-sqrt-0.1.5-alpha.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate caffe2op-sqrt 0.1.5-alpha.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate caffe2op-sqrt 0.1.5-alpha.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate caffe2op-sqrt 0.1.5-alpha.0
[INFO] finished tweaking crates.io crate caffe2op-sqrt 0.1.5-alpha.0
[INFO] tweaked toml for crates.io crate caffe2op-sqrt 0.1.5-alpha.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 708e8e398762c61cc3503721513003b1bc5406158f2fe2a7181b372a33835c6a
[INFO] running `Command { std: "docker" "start" "-a" "708e8e398762c61cc3503721513003b1bc5406158f2fe2a7181b372a33835c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "708e8e398762c61cc3503721513003b1bc5406158f2fe2a7181b372a33835c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "708e8e398762c61cc3503721513003b1bc5406158f2fe2a7181b372a33835c6a", kill_on_drop: false }`
[INFO] [stdout] 708e8e398762c61cc3503721513003b1bc5406158f2fe2a7181b372a33835c6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f686a4f6657bd19e2309d72135f6dc5a59b1a4e320d851392ffdcbefcc4b0b95
[INFO] running `Command { std: "docker" "start" "-a" "f686a4f6657bd19e2309d72135f6dc5a59b1a4e320d851392ffdcbefcc4b0b95", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pyo3-ffi v0.18.3
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling dircpy v0.3.15
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling pyo3 v0.18.3
[INFO] [stderr]    Compiling pyo3-macros-backend v0.18.3
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling zmq v0.10.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling ahash v0.8.7
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling as-slice v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling toml_edit v0.21.0
[INFO] [stderr]    Compiling uninitialized v0.0.2
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]    Compiling cudnn-sys v0.0.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling test-context-macros v0.1.4
[INFO] [stderr]    Compiling zeromq-src v0.2.6+4.3.4
[INFO] [stderr]    Compiling cblas-sys v0.1.4
[INFO] [stderr]    Compiling opencv-binding-generator v0.56.0
[INFO] [stderr]    Compiling nalgebra v0.29.0
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]    Compiling read_exact v0.0.1
[INFO] [stderr]    Compiling packed v0.4.2
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling pod v0.5.0
[INFO] [stderr]    Compiling cblas v0.4.0
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling intrusive-collections v0.9.6
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling cudnn v1.3.1
[INFO] [stderr]    Compiling aligned v0.4.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling mersenne_twister v1.1.1
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling enhanced_enum v0.2.2
[INFO] [stderr]    Compiling mt19937 v2.0.1
[INFO] [stderr]    Compiling half v2.3.1
[INFO] [stderr]    Compiling stdext v0.3.1
[INFO] [stderr]    Compiling caffe2-derive v0.1.5-alpha.0
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]    Compiling derive-error v0.0.5
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling toml v0.8.8
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling system-deps v6.2.0
[INFO] [stderr]    Compiling caffe2-proto v0.1.5-alpha.0
[INFO] [stderr]    Compiling pyo3-macros v0.18.3
[INFO] [stderr]    Compiling zmq-sys v0.12.0
[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-6f17d22bba15001f/caffe2-proto-0.1.5-alpha.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling opencv v0.77.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `caffe2-proto` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f686a4f6657bd19e2309d72135f6dc5a59b1a4e320d851392ffdcbefcc4b0b95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f686a4f6657bd19e2309d72135f6dc5a59b1a4e320d851392ffdcbefcc4b0b95", kill_on_drop: false }`
[INFO] [stdout] f686a4f6657bd19e2309d72135f6dc5a59b1a4e320d851392ffdcbefcc4b0b95
