[INFO] fetching crate wasm-wrapper-gen-build 0.0.3...
[INFO] testing wasm-wrapper-gen-build-0.0.3 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate wasm-wrapper-gen-build 0.0.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate wasm-wrapper-gen-build 0.0.3 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate wasm-wrapper-gen-build 0.0.3
[INFO] finished tweaking crates.io crate wasm-wrapper-gen-build 0.0.3
[INFO] tweaked toml for crates.io crate wasm-wrapper-gen-build 0.0.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b997915bed017a8981ce1d00fd47624e4967354068302f68ca1334dd5f7f7647
[INFO] running `"docker" "start" "-a" "b997915bed017a8981ce1d00fd47624e4967354068302f68ca1334dd5f7f7647"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace v0.3.48
[INFO] [stderr]    Compiling proc-macro-hack v0.4.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling wasm-wrapper-gen-shared v0.0.3
[INFO] [stderr]    Compiling wasm-wrapper-gen-build v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `syn::visit`
[INFO] [stderr]  --> src/source_searching.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     use syn::visit::Visitor;
[INFO] [stderr]   |              ^^^^^ could not find `visit` in `syn`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `visit` in `syn`
[INFO] [stderr]   --> src/source_searching.rs:53:11
[INFO] [stderr]    |
[INFO] [stderr] 53 | impl syn::visit::Visitor for FindMacrosVisitor {
[INFO] [stderr]    |           ^^^^^ could not find `visit` in `syn`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `wasm-wrapper-gen-build`.
[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 `"docker" "inspect" "b997915bed017a8981ce1d00fd47624e4967354068302f68ca1334dd5f7f7647"`
[INFO] running `"docker" "rm" "-f" "b997915bed017a8981ce1d00fd47624e4967354068302f68ca1334dd5f7f7647"`
[INFO] [stdout] b997915bed017a8981ce1d00fd47624e4967354068302f68ca1334dd5f7f7647