[INFO] fetching crate mdbook-kroki-preprocessor 0.2.0...
[INFO] checking mdbook-kroki-preprocessor-0.2.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate mdbook-kroki-preprocessor 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mdbook-kroki-preprocessor 0.2.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-kroki-preprocessor 0.2.0
[INFO] finished tweaking crates.io crate mdbook-kroki-preprocessor 0.2.0
[INFO] tweaked toml for crates.io crate mdbook-kroki-preprocessor 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate mdbook-kroki-preprocessor 0.2.0 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.15.0
[INFO] [stderr]   Downloaded semver v1.0.17
[INFO] [stderr]   Downloaded serde_derive v1.0.160
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[INFO] [stderr]   Downloaded hyper v0.14.26
[INFO] [stderr]   Downloaded web-sys v0.3.61
[INFO] [stderr]   Downloaded mdbook v0.4.28
[INFO] [stderr]   Downloaded openssl v0.10.50
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[INFO] [stderr]   Downloaded reqwest v0.11.16
[INFO] [stderr]   Downloaded chrono v0.4.24
[INFO] [stderr]   Downloaded encoding_rs v0.8.32
[INFO] [stderr]   Downloaded clap_builder v4.2.4
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[INFO] [stderr]   Downloaded rustix v0.37.12
[INFO] [stderr]   Downloaded futures v0.3.28
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[INFO] [stderr]   Downloaded sscanf v0.4.0
[INFO] [stderr]   Downloaded xmltree v0.10.3
[INFO] [stderr]   Downloaded md-kroki v0.1.0
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[INFO] [stderr]   Downloaded mdbook-preprocessor-boilerplate v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5ac38183531998da1a7f99bc4405532caa28e80f55269270fff00359b0e8816
[INFO] running `Command { std: "docker" "start" "-a" "d5ac38183531998da1a7f99bc4405532caa28e80f55269270fff00359b0e8816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5ac38183531998da1a7f99bc4405532caa28e80f55269270fff00359b0e8816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ac38183531998da1a7f99bc4405532caa28e80f55269270fff00359b0e8816", kill_on_drop: false }`
[INFO] [stdout] d5ac38183531998da1a7f99bc4405532caa28e80f55269270fff00359b0e8816
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30edd0cb0bd897a309eef5fdf2ae0e274bcc36a648d14e3a914dca042d570890
[INFO] running `Command { std: "docker" "start" "-a" "30edd0cb0bd897a309eef5fdf2ae0e274bcc36a648d14e3a914dca042d570890", 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 autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling rustix v0.37.12
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking linux-raw-sys v0.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/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]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling openssl v0.10.50
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking anstyle-parse v0.2.0
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "30edd0cb0bd897a309eef5fdf2ae0e274bcc36a648d14e3a914dca042d570890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30edd0cb0bd897a309eef5fdf2ae0e274bcc36a648d14e3a914dca042d570890", kill_on_drop: false }`
[INFO] [stdout] 30edd0cb0bd897a309eef5fdf2ae0e274bcc36a648d14e3a914dca042d570890
