[INFO] cloning repository https://github.com/labooner/doclink-checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/labooner/doclink-checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flabooner%2Fdoclink-checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flabooner%2Fdoclink-checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e6b787e8ee11fba8d8c8715f8b6e349bea74afc
[INFO] testing labooner/doclink-checker against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flabooner%2Fdoclink-checker" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/labooner/doclink-checker
[INFO] finished tweaking git repo https://github.com/labooner/doclink-checker
[INFO] tweaked toml for git repo https://github.com/labooner/doclink-checker written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/labooner/doclink-checker 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 git repo https://github.com/labooner/doclink-checker 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]  Downloading crates ...
[INFO] [stderr]   Downloaded openssl-sys v0.9.76
[INFO] [stderr]   Downloaded futures-sink v0.3.24
[INFO] [stderr]   Downloaded futures-channel v0.3.24
[INFO] [stderr]   Downloaded futures-io v0.3.24
[INFO] [stderr]   Downloaded once_cell v1.15.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.46
[INFO] [stderr]   Downloaded futures-task v0.3.24
[INFO] [stderr]   Downloaded serde_json v1.0.86
[INFO] [stderr]   Downloaded serde v1.0.145
[INFO] [stderr]   Downloaded futures-core v0.3.24
[INFO] [stderr]   Downloaded aho-corasick v0.7.19
[INFO] [stderr]   Downloaded h2 v0.3.14
[INFO] [stderr]   Downloaded futures-util v0.3.24
[INFO] [stderr]   Downloaded hyper v0.14.20
[INFO] [stderr]   Downloaded openssl v0.10.42
[INFO] [stderr]   Downloaded reqwest v0.11.12
[INFO] [stderr]   Downloaded libc v0.2.135
[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] c00432ca8239b8995028bffad3f5e86aa44208c0a51a26ccfcee8e3912aeaad2
[INFO] running `Command { std: "docker" "start" "-a" "c00432ca8239b8995028bffad3f5e86aa44208c0a51a26ccfcee8e3912aeaad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c00432ca8239b8995028bffad3f5e86aa44208c0a51a26ccfcee8e3912aeaad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c00432ca8239b8995028bffad3f5e86aa44208c0a51a26ccfcee8e3912aeaad2", kill_on_drop: false }`
[INFO] [stdout] c00432ca8239b8995028bffad3f5e86aa44208c0a51a26ccfcee8e3912aeaad2
[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] e12ab382d91be95b9b351242c925c432e067539f728d24ffa460eb08d5cfedca
[INFO] running `Command { std: "docker" "start" "-a" "e12ab382d91be95b9b351242c925c432e067539f728d24ffa460eb08d5cfedca", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling openssl-sys v0.9.76
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling futures-io v0.3.24
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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 encoding_rs v0.8.31
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.86
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[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" "e12ab382d91be95b9b351242c925c432e067539f728d24ffa460eb08d5cfedca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e12ab382d91be95b9b351242c925c432e067539f728d24ffa460eb08d5cfedca", kill_on_drop: false }`
[INFO] [stdout] e12ab382d91be95b9b351242c925c432e067539f728d24ffa460eb08d5cfedca
