[INFO] fetching crate pyrus-nn 0.2.1...
[INFO] checking pyrus-nn-0.2.1 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate pyrus-nn 0.2.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate pyrus-nn 0.2.1 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pyrus-nn 0.2.1
[INFO] finished tweaking crates.io crate pyrus-nn 0.2.1
[INFO] tweaked toml for crates.io crate pyrus-nn 0.2.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abf878a1fb66febfc36ed9dab2174793af24d88b96a0af1f9c07351cbf7b675e
[INFO] running `Command { std: "docker" "start" "-a" "abf878a1fb66febfc36ed9dab2174793af24d88b96a0af1f9c07351cbf7b675e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abf878a1fb66febfc36ed9dab2174793af24d88b96a0af1f9c07351cbf7b675e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abf878a1fb66febfc36ed9dab2174793af24d88b96a0af1f9c07351cbf7b675e", kill_on_drop: false }`
[INFO] [stdout] abf878a1fb66febfc36ed9dab2174793af24d88b96a0af1f9c07351cbf7b675e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7505fbead71093ced4dc018ae09ed7c371ea4e5e09c6aab2521e5980eb7482c
[INFO] running `Command { std: "docker" "start" "-a" "e7505fbead71093ced4dc018ae09ed7c371ea4e5e09c6aab2521e5980eb7482c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]    Compiling erased-serde v0.3.16
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.10/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e7505fbead71093ced4dc018ae09ed7c371ea4e5e09c6aab2521e5980eb7482c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7505fbead71093ced4dc018ae09ed7c371ea4e5e09c6aab2521e5980eb7482c", kill_on_drop: false }`
[INFO] [stdout] e7505fbead71093ced4dc018ae09ed7c371ea4e5e09c6aab2521e5980eb7482c