[INFO] fetching crate relm-derive 0.21.0...
[INFO] checking relm-derive-0.21.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate relm-derive 0.21.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate relm-derive 0.21.0 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 relm-derive 0.21.0
[INFO] finished tweaking crates.io crate relm-derive 0.21.0
[INFO] tweaked toml for crates.io crate relm-derive 0.21.0 written to /workspace/builds/worker-12/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 057440153c6497d507f5f2d58b2da577907d25baf9765fa5118dd78ed8ecdee1
[INFO] running `Command { std: "docker" "start" "-a" "057440153c6497d507f5f2d58b2da577907d25baf9765fa5118dd78ed8ecdee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "057440153c6497d507f5f2d58b2da577907d25baf9765fa5118dd78ed8ecdee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "057440153c6497d507f5f2d58b2da577907d25baf9765fa5118dd78ed8ecdee1", kill_on_drop: false }`
[INFO] [stdout] 057440153c6497d507f5f2d58b2da577907d25baf9765fa5118dd78ed8ecdee1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 96b9d2c1a85633d48329cf96f3b9e044ea6872ce74d5b312ef7939ae649e84ec
[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" "96b9d2c1a85633d48329cf96f3b9e044ea6872ce74d5b312ef7939ae649e84ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking syn v1.0.72
[INFO] [stderr]     Checking relm-derive v0.21.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::parse_expr`
[INFO] [stdout]    --> src/gen/mod.rs:707:9
[INFO] [stdout]     |
[INFO] [stdout] 707 |     use syn::parse_expr;
[INFO] [stdout]     |         ^^^^^----------
[INFO] [stdout]     |         |    |
[INFO] [stdout]     |         |    help: a similar name exists in the module: `parse_str`
[INFO] [stdout]     |         no `parse_expr` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `syn::ExprKind`
[INFO] [stdout]    --> src/gen/mod.rs:708:15
[INFO] [stdout]     |
[INFO] [stdout] 708 |     use syn::{ExprKind};
[INFO] [stdout]     |               ^^^^^^^^ no `ExprKind` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `relm-derive`
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[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" "96b9d2c1a85633d48329cf96f3b9e044ea6872ce74d5b312ef7939ae649e84ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96b9d2c1a85633d48329cf96f3b9e044ea6872ce74d5b312ef7939ae649e84ec", kill_on_drop: false }`
[INFO] [stdout] 96b9d2c1a85633d48329cf96f3b9e044ea6872ce74d5b312ef7939ae649e84ec