[INFO] fetching crate mdbook-wavedrom-rs 0.1.0...
[INFO] testing mdbook-wavedrom-rs-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate mdbook-wavedrom-rs 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate mdbook-wavedrom-rs 0.1.0
[INFO] finished tweaking crates.io crate mdbook-wavedrom-rs 0.1.0
[INFO] tweaked toml for crates.io crate mdbook-wavedrom-rs 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-wavedrom-rs 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook-wavedrom-rs 0.1.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded json5 v0.4.1
[INFO] [stderr]   Downloaded quote v1.0.27
[INFO] [stderr]   Downloaded proc-macro2 v1.0.58
[INFO] [stderr]   Downloaded cpufeatures v0.2.7
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[INFO] [stderr]   Downloaded bumpalo v3.13.0
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[INFO] [stderr]   Downloaded rustix v0.37.19
[INFO] [stderr]   Downloaded num-traits v0.2.15
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[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.0
[INFO] [stderr]   Downloaded log v0.4.18
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.86
[INFO] [stderr]   Downloaded bstr v1.5.0
[INFO] [stderr]   Downloaded opener v0.5.2
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[INFO] [stderr]   Downloaded libc v0.2.146
[INFO] [stderr]   Downloaded serde v1.0.163
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[INFO] [stderr]   Downloaded wavedrom v0.1.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.8
[INFO] [stderr]   Downloaded mdbook v0.4.30
[INFO] [stderr]   Downloaded windows v0.48.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e70b07cefa3b78762f1d0f517a2a65549e19c9aaaea0a9f668874d40b91421f
[INFO] running `Command { std: "docker" "start" "-a" "9e70b07cefa3b78762f1d0f517a2a65549e19c9aaaea0a9f668874d40b91421f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e70b07cefa3b78762f1d0f517a2a65549e19c9aaaea0a9f668874d40b91421f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e70b07cefa3b78762f1d0f517a2a65549e19c9aaaea0a9f668874d40b91421f", kill_on_drop: false }`
[INFO] [stdout] 9e70b07cefa3b78762f1d0f517a2a65549e19c9aaaea0a9f668874d40b91421f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2c25ad792884db18e40abfa5853fb5bd21ed8f124dae4b91e19a24c3fe646d6
[INFO] running `Command { std: "docker" "start" "-a" "a2c25ad792884db18e40abfa5853fb5bd21ed8f124dae4b91e19a24c3fe646d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.0
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]    Compiling anstyle v1.0.0
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling clap_lex v0.5.0
[INFO] [stderr]    Compiling pulldown-cmark v0.9.3
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling tempfile v3.6.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/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 termcolor v1.2.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.57
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling ttf-parser v0.19.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling topological-sort v0.2.2
[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" "a2c25ad792884db18e40abfa5853fb5bd21ed8f124dae4b91e19a24c3fe646d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2c25ad792884db18e40abfa5853fb5bd21ed8f124dae4b91e19a24c3fe646d6", kill_on_drop: false }`
[INFO] [stdout] a2c25ad792884db18e40abfa5853fb5bd21ed8f124dae4b91e19a24c3fe646d6