[INFO] cloning repository https://github.com/jonahgoldwastaken/mdbook-external-links
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonahgoldwastaken/mdbook-external-links" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonahgoldwastaken%2Fmdbook-external-links", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonahgoldwastaken%2Fmdbook-external-links'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c9c6c303eb0e57296838578234c95b58d19e138
[INFO] checking jonahgoldwastaken/mdbook-external-links against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonahgoldwastaken%2Fmdbook-external-links" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jonahgoldwastaken/mdbook-external-links
[INFO] finished tweaking git repo https://github.com/jonahgoldwastaken/mdbook-external-links
[INFO] tweaked toml for git repo https://github.com/jonahgoldwastaken/mdbook-external-links written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jonahgoldwastaken/mdbook-external-links on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jonahgoldwastaken/mdbook-external-links 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shlex v1.1.0
[INFO] [stderr]   Downloaded unicode-width v0.1.10
[INFO] [stderr]   Downloaded pulldown-cmark-to-cmark v10.0.4
[INFO] [stderr]   Downloaded scratch v1.0.3
[INFO] [stderr]   Downloaded futures-task v0.3.25
[INFO] [stderr]   Downloaded time v0.1.45
[INFO] [stderr]   Downloaded ryu v1.0.12
[INFO] [stderr]   Downloaded ucd-trie v0.1.5
[INFO] [stderr]   Downloaded kqueue-sys v1.0.3
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.86
[INFO] [stderr]   Downloaded link-cplusplus v1.0.8
[INFO] [stderr]   Downloaded string_cache v0.8.4
[INFO] [stderr]   Downloaded terminal_size v0.2.3
[INFO] [stderr]   Downloaded ammonia v3.3.0
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.86
[INFO] [stderr]   Downloaded rustix v0.36.6
[INFO] [stderr]   Downloaded io-lifetimes v1.0.4
[INFO] [stderr]   Downloaded pest_meta v2.5.3
[INFO] [stderr]   Downloaded socket2 v0.4.7
[INFO] [stderr]   Downloaded iana-time-zone-haiku v0.1.1
[INFO] [stderr]   Downloaded cxx-build v1.0.86
[INFO] [stderr]   Downloaded tokio-util v0.7.4
[INFO] [stderr]   Downloaded h2 v0.3.15
[INFO] [stderr]   Downloaded mdbook v0.4.25
[INFO] [stderr]   Downloaded handlebars v4.3.6
[INFO] [stderr]   Downloaded clap_lex v0.3.1
[INFO] [stderr]   Downloaded clap_complete v4.1.0
[INFO] [stderr]   Downloaded futures-util v0.3.25
[INFO] [stderr]   Downloaded errno v0.2.8
[INFO] [stderr]   Downloaded cxx v1.0.86
[INFO] [stderr]   Downloaded tokio v1.24.2
[INFO] [stderr]   Downloaded is-terminal v0.4.2
[INFO] [stderr]   Downloaded elasticlunr-rs v3.0.1
[INFO] [stderr]   Downloaded pest v2.5.3
[INFO] [stderr]   Downloaded gitignore v1.0.7
[INFO] [stderr]   Downloaded tokio-stream v0.1.11
[INFO] [stderr]   Downloaded chrono v0.4.23
[INFO] [stderr]   Downloaded clap v4.1.1
[INFO] [stderr]   Downloaded futures-macro v0.3.25
[INFO] [stderr]   Downloaded block-buffer v0.10.3
[INFO] [stderr]   Downloaded iana-time-zone v0.1.53
[INFO] [stderr]   Downloaded pest_derive v2.5.3
[INFO] [stderr]   Downloaded kqueue v1.0.7
[INFO] [stderr]   Downloaded opener v0.5.0
[INFO] [stderr]   Downloaded fastrand v1.8.0
[INFO] [stderr]   Downloaded tempfile v3.3.0
[INFO] [stderr]   Downloaded futures-channel v0.3.25
[INFO] [stderr]   Downloaded hyper v0.14.23
[INFO] [stderr]   Downloaded tokio-macros v1.8.2
[INFO] [stderr]   Downloaded notify-debouncer-mini v0.2.1
[INFO] [stderr]   Downloaded warp v0.3.3
[INFO] [stderr]   Downloaded pulldown-cmark v0.9.2
[INFO] [stderr]   Downloaded serde_json v1.0.91
[INFO] [stderr]   Downloaded headers v0.3.8
[INFO] [stderr]   Downloaded pest_generator v2.5.3
[INFO] [stderr]   Downloaded notify v5.0.0
[INFO] [stderr]   Downloaded typenum v1.16.0
[INFO] [stderr]   Downloaded semver v1.0.16
[INFO] [stderr]   Downloaded itoa v1.0.5
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e13dde6d3ef89a830b0eca9cb3c76d340454e5b3311d53377913bb22d6d93175
[INFO] running `Command { std: "docker" "start" "-a" "e13dde6d3ef89a830b0eca9cb3c76d340454e5b3311d53377913bb22d6d93175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e13dde6d3ef89a830b0eca9cb3c76d340454e5b3311d53377913bb22d6d93175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e13dde6d3ef89a830b0eca9cb3c76d340454e5b3311d53377913bb22d6d93175", kill_on_drop: false }`
[INFO] [stdout] e13dde6d3ef89a830b0eca9cb3c76d340454e5b3311d53377913bb22d6d93175
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bca24c8d6c81c263dd4817ae9eda84ed9eb41d177a915a108cc390f5cdff0995
[INFO] running `Command { std: "docker" "start" "-a" "bca24c8d6c81c263dd4817ae9eda84ed9eb41d177a915a108cc390f5cdff0995", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[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 serde v1.0.152
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.8
[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" "bca24c8d6c81c263dd4817ae9eda84ed9eb41d177a915a108cc390f5cdff0995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bca24c8d6c81c263dd4817ae9eda84ed9eb41d177a915a108cc390f5cdff0995", kill_on_drop: false }`
[INFO] [stdout] bca24c8d6c81c263dd4817ae9eda84ed9eb41d177a915a108cc390f5cdff0995