[INFO] fetching crate ghetto-lock 0.2.1...
[INFO] documenting ghetto-lock-0.2.1 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate ghetto-lock 0.2.1 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate ghetto-lock 0.2.1 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 ghetto-lock 0.2.1
[INFO] finished tweaking crates.io crate ghetto-lock 0.2.1
[INFO] tweaked toml for crates.io crate ghetto-lock 0.2.1 written to /workspace/builds/worker-19/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-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] b98aa681dd6d69b4adbe04d4489ff664739ca8c14f19f8ade17ea8c91417af60
[INFO] running `Command { std: "docker" "start" "-a" "b98aa681dd6d69b4adbe04d4489ff664739ca8c14f19f8ade17ea8c91417af60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b98aa681dd6d69b4adbe04d4489ff664739ca8c14f19f8ade17ea8c91417af60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b98aa681dd6d69b4adbe04d4489ff664739ca8c14f19f8ade17ea8c91417af60", kill_on_drop: false }`
[INFO] [stdout] b98aa681dd6d69b4adbe04d4489ff664739ca8c14f19f8ade17ea8c91417af60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 56802422ee464600779fd3a564a375acc8c04d164c33de2ab775802dcfa7babf
[INFO] running `Command { std: "docker" "start" "-a" "56802422ee464600779fd3a564a375acc8c04d164c33de2ab775802dcfa7babf", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling enum_dispatch v0.2.4
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/enum_dispatch-0.2.4/src/enum_dispatch_item.rs:58:11
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl syn::export::quote::ToTokens for EnumDispatchItem {
[INFO] [stdout]    |           ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/enum_dispatch-0.2.4/src/enum_dispatch_variant.rs:51:11
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl syn::export::quote::ToTokens for EnumDispatchVariant {
[INFO] [stdout]    |           ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/enum_dispatch-0.2.4/src/expansion.rs:243:69
[INFO] [stdout]     |
[INFO] [stdout] 243 |                         ident: syn::Ident::new("self", syn::export::Span::call_site()),
[INFO] [stdout]     |                                                                     ^^^^ not found in `syn::export`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 3   | use crate::expansion::proc_macro::Span;
[INFO] [stdout]     |
[INFO] [stdout] 3   | use crate::expansion::proc_macro::bridge::server::Span;
[INFO] [stdout]     |
[INFO] [stdout] 3   | use crate::expansion::syn::__private::Span;
[INFO] [stdout]     |
[INFO] [stdout] 3   | use proc_macro2::Span;
[INFO] [stdout]     |
[INFO] [stdout]       and 4 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enum_dispatch`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "56802422ee464600779fd3a564a375acc8c04d164c33de2ab775802dcfa7babf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56802422ee464600779fd3a564a375acc8c04d164c33de2ab775802dcfa7babf", kill_on_drop: false }`
[INFO] [stdout] 56802422ee464600779fd3a564a375acc8c04d164c33de2ab775802dcfa7babf
