[INFO] fetching crate bincode-grpc 0.7.2...
[INFO] checking bincode-grpc-0.7.2 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate bincode-grpc 0.7.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate bincode-grpc 0.7.2 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bincode-grpc 0.7.2
[INFO] finished tweaking crates.io crate bincode-grpc 0.7.2
[INFO] tweaked toml for crates.io crate bincode-grpc 0.7.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bindgen v0.51.1
[INFO] [stderr]   Downloaded grpcio v0.6.0
[INFO] [stderr]   Downloaded grpcio-sys v0.6.0
[INFO] [stderr]   Downloaded bincode-grpc-macro v0.7.2
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b253d3a473b66ccc1bf348bb9bf5195990c5f1f4aee373a38e8c483b2b5b57fa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b253d3a473b66ccc1bf348bb9bf5195990c5f1f4aee373a38e8c483b2b5b57fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b253d3a473b66ccc1bf348bb9bf5195990c5f1f4aee373a38e8c483b2b5b57fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b253d3a473b66ccc1bf348bb9bf5195990c5f1f4aee373a38e8c483b2b5b57fa", kill_on_drop: false }`
[INFO] [stdout] b253d3a473b66ccc1bf348bb9bf5195990c5f1f4aee373a38e8c483b2b5b57fa
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 229bcf2e6a0f78265fb1880f8e7099edb462e00a85809fb3a25ecc1bb9752f5b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "229bcf2e6a0f78265fb1880f8e7099edb462e00a85809fb3a25ecc1bb9752f5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling grpcio-sys v0.6.0
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling bincode-grpc-macro v0.7.2
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bincode-grpc-macro-0.7.2/src/lib.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::export::TokenStream2;
[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 `bincode-grpc-macro`
[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" "229bcf2e6a0f78265fb1880f8e7099edb462e00a85809fb3a25ecc1bb9752f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "229bcf2e6a0f78265fb1880f8e7099edb462e00a85809fb3a25ecc1bb9752f5b", kill_on_drop: false }`
[INFO] [stdout] 229bcf2e6a0f78265fb1880f8e7099edb462e00a85809fb3a25ecc1bb9752f5b