[INFO] fetching crate mdbook-linkcheck 0.7.7...
[INFO] checking mdbook-linkcheck-0.7.7 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate mdbook-linkcheck 0.7.7 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mdbook-linkcheck 0.7.7 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] removed /workspace/builds/worker-1-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate mdbook-linkcheck 0.7.7
[INFO] finished tweaking crates.io crate mdbook-linkcheck 0.7.7
[INFO] tweaked toml for crates.io crate mdbook-linkcheck 0.7.7 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate mdbook-linkcheck 0.7.7 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 v2.4.0
[INFO] [stderr]   Downloaded linkcheck v0.4.1
[INFO] [stderr]   Downloaded iana-time-zone v0.1.50
[INFO] [stderr]   Downloaded clap_complete v3.2.5
[INFO] [stderr]   Downloaded pest v2.4.0
[INFO] [stderr]   Downloaded handlebars v4.3.4
[INFO] [stderr]   Downloaded digest v0.10.5
[INFO] [stderr]   Downloaded pest_meta v2.4.0
[INFO] [stderr]   Downloaded pest_generator v2.4.0
[INFO] [stderr]   Downloaded topological-sort v0.1.0
[INFO] [stderr]   Downloaded mdbook v0.4.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e0da71796b36a24db1c075fb35a96a9ea7786b134f5365fe2426110db2ffaf1d
[INFO] running `Command { std: "docker" "start" "-a" "e0da71796b36a24db1c075fb35a96a9ea7786b134f5365fe2426110db2ffaf1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0da71796b36a24db1c075fb35a96a9ea7786b134f5365fe2426110db2ffaf1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0da71796b36a24db1c075fb35a96a9ea7786b134f5365fe2426110db2ffaf1d", kill_on_drop: false }`
[INFO] [stdout] e0da71796b36a24db1c075fb35a96a9ea7786b134f5365fe2426110db2ffaf1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] cf8bae0e01ec703bceb5d0192cd82136f114686567a3846358dae6485e2d661f
[INFO] running `Command { std: "docker" "start" "-a" "cf8bae0e01ec703bceb5d0192cd82136f114686567a3846358dae6485e2d661f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.46/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 indexmap v1.9.1
[INFO] [stderr]    Compiling openssl-src v111.22.0+1.1.1q
[INFO] [stderr]    Compiling slab v0.4.7
[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 futures-sink v0.3.24
[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" "cf8bae0e01ec703bceb5d0192cd82136f114686567a3846358dae6485e2d661f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf8bae0e01ec703bceb5d0192cd82136f114686567a3846358dae6485e2d661f", kill_on_drop: false }`
[INFO] [stdout] cf8bae0e01ec703bceb5d0192cd82136f114686567a3846358dae6485e2d661f
[INFO] checking mdbook-linkcheck-0.7.7 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate mdbook-linkcheck 0.7.7 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mdbook-linkcheck 0.7.7 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate mdbook-linkcheck 0.7.7
[INFO] finished tweaking crates.io crate mdbook-linkcheck 0.7.7
[INFO] tweaked toml for crates.io crate mdbook-linkcheck 0.7.7 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate mdbook-linkcheck 0.7.7 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" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93b55f6f1821f0a16e56368f8185f096a2fd430422a17be9d9238fcfe45d664f
[INFO] running `Command { std: "docker" "start" "-a" "93b55f6f1821f0a16e56368f8185f096a2fd430422a17be9d9238fcfe45d664f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93b55f6f1821f0a16e56368f8185f096a2fd430422a17be9d9238fcfe45d664f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93b55f6f1821f0a16e56368f8185f096a2fd430422a17be9d9238fcfe45d664f", kill_on_drop: false }`
[INFO] [stdout] 93b55f6f1821f0a16e56368f8185f096a2fd430422a17be9d9238fcfe45d664f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3563be5c69b095deafbb0ab5dfa84f5968649799a2e2068c2cb0db9cb55da3ee
[INFO] running `Command { std: "docker" "start" "-a" "3563be5c69b095deafbb0ab5dfa84f5968649799a2e2068c2cb0db9cb55da3ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling openssl-src v111.22.0+1.1.1q
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.46/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 pkg-config v0.3.25
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[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" "3563be5c69b095deafbb0ab5dfa84f5968649799a2e2068c2cb0db9cb55da3ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3563be5c69b095deafbb0ab5dfa84f5968649799a2e2068c2cb0db9cb55da3ee", kill_on_drop: false }`
[INFO] [stdout] 3563be5c69b095deafbb0ab5dfa84f5968649799a2e2068c2cb0db9cb55da3ee
