[INFO] fetching crate neural_networks_rust 0.5.0...
[INFO] checking neural_networks_rust-0.5.0 against try#31561a63598a0f21fc74c024747ef1310fdd2eb2 for pr-133536
[INFO] extracting crate neural_networks_rust 0.5.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate neural_networks_rust 0.5.0 on toolchain 31561a63598a0f21fc74c024747ef1310fdd2eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate neural_networks_rust 0.5.0
[INFO] finished tweaking crates.io crate neural_networks_rust 0.5.0
[INFO] tweaked toml for crates.io crate neural_networks_rust 0.5.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate neural_networks_rust 0.5.0 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" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7350b070b440316869a1261fd5845ac7e29416dce20f4293a08a1b8bbe46b1dd
[INFO] running `Command { std: "docker" "start" "-a" "7350b070b440316869a1261fd5845ac7e29416dce20f4293a08a1b8bbe46b1dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7350b070b440316869a1261fd5845ac7e29416dce20f4293a08a1b8bbe46b1dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7350b070b440316869a1261fd5845ac7e29416dce20f4293a08a1b8bbe46b1dd", kill_on_drop: false }`
[INFO] [stdout] 7350b070b440316869a1261fd5845ac7e29416dce20f4293a08a1b8bbe46b1dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5421774a97ad68d9e77551de2c76e02dc983e8acc695bcaa1b28dc8f6f1a099d
[INFO] running `Command { std: "docker" "start" "-a" "5421774a97ad68d9e77551de2c76e02dc983e8acc695bcaa1b28dc8f6f1a099d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling target-features v0.1.3
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]    Compiling zstd-safe v6.0.4+zstd.1.5.4
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5421774a97ad68d9e77551de2c76e02dc983e8acc695bcaa1b28dc8f6f1a099d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5421774a97ad68d9e77551de2c76e02dc983e8acc695bcaa1b28dc8f6f1a099d", kill_on_drop: false }`
[INFO] [stdout] 5421774a97ad68d9e77551de2c76e02dc983e8acc695bcaa1b28dc8f6f1a099d
