[INFO] fetching crate nalgebra-numpy 0.3.0...
[INFO] checking nalgebra-numpy-0.3.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate nalgebra-numpy 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate nalgebra-numpy 0.3.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nalgebra-numpy 0.3.0
[INFO] finished tweaking crates.io crate nalgebra-numpy 0.3.0
[INFO] tweaked toml for crates.io crate nalgebra-numpy 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8dfa6118f5ae94f9c834573921f0ee0dd820cf5de0f8dcdaaabb1984b3ae7b7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a8dfa6118f5ae94f9c834573921f0ee0dd820cf5de0f8dcdaaabb1984b3ae7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8dfa6118f5ae94f9c834573921f0ee0dd820cf5de0f8dcdaaabb1984b3ae7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8dfa6118f5ae94f9c834573921f0ee0dd820cf5de0f8dcdaaabb1984b3ae7b7", kill_on_drop: false }`
[INFO] [stdout] a8dfa6118f5ae94f9c834573921f0ee0dd820cf5de0f8dcdaaabb1984b3ae7b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a09856dbd7f3dc89da610cb4cc5969196f1fd6bd20458d3d7a0282a8bdc182bb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a09856dbd7f3dc89da610cb4cc5969196f1fd6bd20458d3d7a0282a8bdc182bb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pyo3 v0.11.1
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling pyo3-derive-backend v0.11.1
[INFO] [stderr]    Compiling assert2-macros v0.3.6
[INFO] [stderr]     Checking rand_distr v0.3.0
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking ndarray v0.15.3
[INFO] [stderr]     Checking simba v0.3.1
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]     Checking inventory v0.1.10
[INFO] [stderr]    Compiling pyo3cls v0.11.1
[INFO] [stderr]     Checking assert2 v0.3.6
[INFO] [stderr]     Checking numpy v0.11.0
[INFO] [stderr]    Compiling inline-python-macros v0.5.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/inline-python-macros-0.5.3/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_span)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `inline-python-macros` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a09856dbd7f3dc89da610cb4cc5969196f1fd6bd20458d3d7a0282a8bdc182bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a09856dbd7f3dc89da610cb4cc5969196f1fd6bd20458d3d7a0282a8bdc182bb", kill_on_drop: false }`
[INFO] [stdout] a09856dbd7f3dc89da610cb4cc5969196f1fd6bd20458d3d7a0282a8bdc182bb
