[INFO] fetching crate minecraft-protocol 0.1.0...
[INFO] documenting minecraft-protocol-0.1.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate minecraft-protocol 0.1.0 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate minecraft-protocol 0.1.0 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 minecraft-protocol 0.1.0
[INFO] finished tweaking crates.io crate minecraft-protocol 0.1.0
[INFO] tweaked toml for crates.io crate minecraft-protocol 0.1.0 written to /workspace/builds/worker-42/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-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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] a4d3f5dc33470ab84f5823fac8d1e26474a25ca6f83767f3d42c70282b4499a6
[INFO] running `Command { std: "docker" "start" "-a" "a4d3f5dc33470ab84f5823fac8d1e26474a25ca6f83767f3d42c70282b4499a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d3f5dc33470ab84f5823fac8d1e26474a25ca6f83767f3d42c70282b4499a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d3f5dc33470ab84f5823fac8d1e26474a25ca6f83767f3d42c70282b4499a6", kill_on_drop: false }`
[INFO] [stdout] a4d3f5dc33470ab84f5823fac8d1e26474a25ca6f83767f3d42c70282b4499a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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] 4fd74489afcf8165b2b0f4c0587937201379309c8a85ba5e854d69de43f01caa
[INFO] running `Command { std: "docker" "start" "-a" "4fd74489afcf8165b2b0f4c0587937201379309c8a85ba5e854d69de43f01caa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]    Compiling minecraft-protocol-derive v0.0.0
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/minecraft-protocol-derive-0.0.0/src/lib.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | use syn::export::Span;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minecraft-protocol-derive`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4fd74489afcf8165b2b0f4c0587937201379309c8a85ba5e854d69de43f01caa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fd74489afcf8165b2b0f4c0587937201379309c8a85ba5e854d69de43f01caa", kill_on_drop: false }`
[INFO] [stdout] 4fd74489afcf8165b2b0f4c0587937201379309c8a85ba5e854d69de43f01caa
