[INFO] fetching crate git-hotspots 0.0.8...
[INFO] checking git-hotspots-0.0.8 against master#d8810e3e2dab96778d20dd6d746ff95465515509 for pr-137033
[INFO] extracting crate git-hotspots 0.0.8 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate git-hotspots 0.0.8 on toolchain d8810e3e2dab96778d20dd6d746ff95465515509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate git-hotspots 0.0.8
[INFO] finished tweaking crates.io crate git-hotspots 0.0.8
[INFO] tweaked toml for crates.io crate git-hotspots 0.0.8 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate git-hotspots 0.0.8 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" "+d8810e3e2dab96778d20dd6d746ff95465515509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded detect-lang v0.1.5
[INFO] [stderr]   Downloaded hotspots-parser v0.0.8
[INFO] [stderr]   Downloaded npm_rs v1.0.0
[INFO] [stderr]   Downloaded tree-sitter-lua v0.0.14
[INFO] [stderr]   Downloaded hotspots-insight v0.0.8
[INFO] [stderr]   Downloaded hotspots-discovery v0.0.8
[INFO] [stderr]   Downloaded tree-sitter-go v0.19.1
[INFO] [stderr]   Downloaded grep-searcher v0.1.11
[INFO] [stderr]   Downloaded grep-regex v0.1.11
[INFO] [stderr]   Downloaded grep-matcher v0.1.6
[INFO] [stderr]   Downloaded tree-sitter-rust v0.20.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e2019b14d27bf8cf3d08783d4aa40f08ef3b115f3c7c0d69b1742dbb57708d2
[INFO] running `Command { std: "docker" "start" "-a" "7e2019b14d27bf8cf3d08783d4aa40f08ef3b115f3c7c0d69b1742dbb57708d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e2019b14d27bf8cf3d08783d4aa40f08ef3b115f3c7c0d69b1742dbb57708d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2019b14d27bf8cf3d08783d4aa40f08ef3b115f3c7c0d69b1742dbb57708d2", kill_on_drop: false }`
[INFO] [stdout] 7e2019b14d27bf8cf3d08783d4aa40f08ef3b115f3c7c0d69b1742dbb57708d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d306f850f1d3fe66800e67da725502e395371d911cd6f0753081be95ff108eb2
[INFO] running `Command { std: "docker" "start" "-a" "d306f850f1d3fe66800e67da725502e395371d911cd6f0753081be95ff108eb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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] [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" "d306f850f1d3fe66800e67da725502e395371d911cd6f0753081be95ff108eb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d306f850f1d3fe66800e67da725502e395371d911cd6f0753081be95ff108eb2", kill_on_drop: false }`
[INFO] [stdout] d306f850f1d3fe66800e67da725502e395371d911cd6f0753081be95ff108eb2