[INFO] fetching crate mdbook-scientific 0.5.0-beta.3...
[INFO] checking mdbook-scientific-0.5.0-beta.3 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate mdbook-scientific 0.5.0-beta.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate mdbook-scientific 0.5.0-beta.3 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-scientific 0.5.0-beta.3
[INFO] finished tweaking crates.io crate mdbook-scientific 0.5.0-beta.3
[INFO] tweaked toml for crates.io crate mdbook-scientific 0.5.0-beta.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate mdbook-scientific 0.5.0-beta.3 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 opener v0.5.0
[INFO] [stderr]   Downloaded pest_derive v2.5.3
[INFO] [stderr]   Downloaded nom-tracable-macros v0.5.2
[INFO] [stderr]   Downloaded nom-bibtex v0.3.0
[INFO] [stderr]   Downloaded mdbook-boilerplate v0.1.0
[INFO] [stderr]   Downloaded nom-tracable v0.5.2
[INFO] [stderr]   Downloaded pest_generator v2.5.3
[INFO] [stderr]   Downloaded pest_meta v2.5.3
[INFO] [stderr]   Downloaded fs-err v2.9.0
[INFO] [stderr]   Downloaded terminal_size v0.2.3
[INFO] [stderr]   Downloaded clap_complete v4.1.0
[INFO] [stderr]   Downloaded object v0.30.2
[INFO] [stderr]   Downloaded mdbook v0.4.25
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c06b4ae8459e278918f4d001e43f4b1c9799bc37128bac4bf5b71f978a25bb0
[INFO] running `Command { std: "docker" "start" "-a" "2c06b4ae8459e278918f4d001e43f4b1c9799bc37128bac4bf5b71f978a25bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c06b4ae8459e278918f4d001e43f4b1c9799bc37128bac4bf5b71f978a25bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c06b4ae8459e278918f4d001e43f4b1c9799bc37128bac4bf5b71f978a25bb0", kill_on_drop: false }`
[INFO] [stdout] 2c06b4ae8459e278918f4d001e43f4b1c9799bc37128bac4bf5b71f978a25bb0
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 559930bab11712d4a9a47325016520650f5d67f2c9acace5321d899ac09a3300
[INFO] running `Command { std: "docker" "start" "-a" "559930bab11712d4a9a47325016520650f5d67f2c9acace5321d899ac09a3300", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling io-lifetimes v1.0.4
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]    Compiling rustix v0.36.6
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]     Checking linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking typenum v1.16.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking lexical-core v0.7.6
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]    Compiling pulldown-cmark v0.9.2
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/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]     Checking clap_lex v0.3.1
[INFO] [stderr]     Checking gimli v0.27.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]    Compiling anyhow v1.0.68
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking object v0.30.2
[INFO] [stderr]     Checking owo-colors v3.5.0
[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] 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" "559930bab11712d4a9a47325016520650f5d67f2c9acace5321d899ac09a3300", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "559930bab11712d4a9a47325016520650f5d67f2c9acace5321d899ac09a3300", kill_on_drop: false }`
[INFO] [stdout] 559930bab11712d4a9a47325016520650f5d67f2c9acace5321d899ac09a3300
