[INFO] fetching crate cargo-doc-coverage 1.0.0...
[INFO] documenting cargo-doc-coverage-1.0.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate cargo-doc-coverage 1.0.0 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate cargo-doc-coverage 1.0.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-doc-coverage 1.0.0
[INFO] finished tweaking crates.io crate cargo-doc-coverage 1.0.0
[INFO] tweaked toml for crates.io crate cargo-doc-coverage 1.0.0 written to /workspace/builds/worker-88/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d188055decedb027b2acb4f1833c3830f36a4dd770c6aebd31b29c455b3ae616
[INFO] running `Command { std: "docker" "start" "-a" "d188055decedb027b2acb4f1833c3830f36a4dd770c6aebd31b29c455b3ae616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d188055decedb027b2acb4f1833c3830f36a4dd770c6aebd31b29c455b3ae616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d188055decedb027b2acb4f1833c3830f36a4dd770c6aebd31b29c455b3ae616", kill_on_drop: false }`
[INFO] [stdout] d188055decedb027b2acb4f1833c3830f36a4dd770c6aebd31b29c455b3ae616
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0701ef2684603f0afa53081ee085ad97dd94edaa3e3e3097d0a3d70135632f4a
[INFO] running `Command { std: "docker" "start" "-a" "0701ef2684603f0afa53081ee085ad97dd94edaa3e3e3097d0a3d70135632f4a", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `cargo-doc-coverage` in package `cargo-doc-coverage v1.0.0 (/opt/rustwide/workdir)` has the same output filename as the lib target `cargo_doc_coverage` in package `cargo-doc-coverage v1.0.0 (/opt/rustwide/workdir)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/doc/cargo_doc_coverage/index.html
[INFO] [stderr] The output filenames should be unique.
[INFO] [stderr] This is a known bug where multiple crates with the same name use
[INFO] [stderr] the same path; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] If this looks unexpected, it may be a bug in Cargo. Please file a bug report at
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/ with as much information as you
[INFO] [stderr] can provide.
[INFO] [stderr] cargo 1.54.0 (5ae8d74b3 2021-06-22) running on `x86_64-unknown-linux-gnu` target `x86_64-unknown-linux-gnu`
[INFO] [stderr] First unit: Unit { pkg: Package { id: PackageId { name: "cargo-doc-coverage", version: "1.0.0", source: "/opt/rustwide/workdir" }, ..: ".." }, target: TargetInner { name: "cargo-doc-coverage", doc: true, ..: with_path("/opt/rustwide/workdir/src/main.rs", Edition2015) }, profile: Profile { name: "doc", debuginfo: Some(2), debug_assertions: true, overflow_checks: true, ..: default() }, kind: Host, mode: Doc { deps: false }, features: [], is_std: false, dep_hash: 11483060508629102199 }
[INFO] [stderr] Second unit: Unit { pkg: Package { id: PackageId { name: "cargo-doc-coverage", version: "1.0.0", source: "/opt/rustwide/workdir" }, ..: ".." }, target: TargetInner { for_host: true, ..: lib_target("cargo_doc_coverage", ["dylib"], "/opt/rustwide/workdir/src/lib.rs", Edition2015) }, profile: Profile { name: "doc", debuginfo: Some(2), debug_assertions: true, overflow_checks: true, ..: default() }, kind: Host, mode: Doc { deps: false }, features: [], is_std: false, dep_hash: 1461417740605317510 }
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]  Documenting cargo-doc-coverage v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | extern crate syntax;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `cargo-doc-coverage`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type dylib --crate-name cargo_doc_coverage src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern matches=/opt/rustwide/target/debug/deps/libmatches-0bdd068591f2f27b.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-67e30c758e0c56b4.rmeta --cap-lints=warn --crate-version 1.0.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0701ef2684603f0afa53081ee085ad97dd94edaa3e3e3097d0a3d70135632f4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0701ef2684603f0afa53081ee085ad97dd94edaa3e3e3097d0a3d70135632f4a", kill_on_drop: false }`
[INFO] [stdout] 0701ef2684603f0afa53081ee085ad97dd94edaa3e3e3097d0a3d70135632f4a
