[INFO] fetching crate source-demo-tool-crawler 0.8.2...
[INFO] building source-demo-tool-crawler-0.8.2 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate source-demo-tool-crawler 0.8.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate source-demo-tool-crawler 0.8.2
[INFO] finished tweaking crates.io crate source-demo-tool-crawler 0.8.2
[INFO] tweaked toml for crates.io crate source-demo-tool-crawler 0.8.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate source-demo-tool-crawler 0.8.2 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate source-demo-tool-crawler 0.8.2 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f892b869372acaf15fc29e81b2dfe736e38ce1f91a1a491558c71caedb8c1fa
[INFO] running `Command { std: "docker" "start" "-a" "3f892b869372acaf15fc29e81b2dfe736e38ce1f91a1a491558c71caedb8c1fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f892b869372acaf15fc29e81b2dfe736e38ce1f91a1a491558c71caedb8c1fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f892b869372acaf15fc29e81b2dfe736e38ce1f91a1a491558c71caedb8c1fa", kill_on_drop: false }`
[INFO] [stdout] 3f892b869372acaf15fc29e81b2dfe736e38ce1f91a1a491558c71caedb8c1fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d2647c36faf06a66cfa007b3fea408b131e13d5e0e9a993ae7ffaaf3e0b47e1
[INFO] running `Command { std: "docker" "start" "-a" "4d2647c36faf06a66cfa007b3fea408b131e13d5e0e9a993ae7ffaaf3e0b47e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cfg-expr v0.11.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.6
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling polling v2.5.2
[INFO] [stderr]    Compiling futures-io v0.3.26
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling dlib v0.5.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling ttf-parser v0.18.1
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling async-io v1.12.0
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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 futures-task v0.3.26
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.8
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling concurrent-queue v2.1.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling async-trait v0.1.64
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling x11-dl v2.20.1
[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" "4d2647c36faf06a66cfa007b3fea408b131e13d5e0e9a993ae7ffaaf3e0b47e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d2647c36faf06a66cfa007b3fea408b131e13d5e0e9a993ae7ffaaf3e0b47e1", kill_on_drop: false }`
[INFO] [stdout] 4d2647c36faf06a66cfa007b3fea408b131e13d5e0e9a993ae7ffaaf3e0b47e1