[INFO] fetching crate neogrok 1.0.0...
[INFO] checking neogrok-1.0.0 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate neogrok 1.0.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate neogrok 1.0.0 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate neogrok 1.0.0
[INFO] finished tweaking crates.io crate neogrok 1.0.0
[INFO] tweaked toml for crates.io crate neogrok 1.0.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate neogrok 1.0.0 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mid-idpool v1.0.0
[INFO] [stderr]   Downloaded mid-compression v1.0.0
[INFO] [stderr]   Downloaded integral-enum v2.1.1
[INFO] [stderr]   Downloaded enum_dispatch v0.3.11
[INFO] [stderr]   Downloaded mid-net v1.0.0
[INFO] [stderr]   Downloaded zstd-sys v2.0.7+zstd.1.5.4
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36ce74e92fe0210b2fbaa37a913397649ff38d6fe9a6b03d81fac9a33776f19f
[INFO] running `Command { std: "docker" "start" "-a" "36ce74e92fe0210b2fbaa37a913397649ff38d6fe9a6b03d81fac9a33776f19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36ce74e92fe0210b2fbaa37a913397649ff38d6fe9a6b03d81fac9a33776f19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ce74e92fe0210b2fbaa37a913397649ff38d6fe9a6b03d81fac9a33776f19f", kill_on_drop: false }`
[INFO] [stdout] 36ce74e92fe0210b2fbaa37a913397649ff38d6fe9a6b03d81fac9a33776f19f
[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=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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9c034fd47d889e44bde7591009df6f89d473a4978b7429b05067de038f2faea
[INFO] running `Command { std: "docker" "start" "-a" "c9c034fd47d889e44bde7591009df6f89d473a4978b7429b05067de038f2faea", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking lock_api v0.4.9
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/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]     Checking nom8 v0.2.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking spin v0.9.5
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking futures-sink v0.3.26
[INFO] [stderr]     Checking rustc-hash v1.1.0
[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" "c9c034fd47d889e44bde7591009df6f89d473a4978b7429b05067de038f2faea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9c034fd47d889e44bde7591009df6f89d473a4978b7429b05067de038f2faea", kill_on_drop: false }`
[INFO] [stdout] c9c034fd47d889e44bde7591009df6f89d473a4978b7429b05067de038f2faea
