[INFO] fetching crate relm-gen-widget 0.16.0...
[INFO] checking relm-gen-widget-0.16.0 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate relm-gen-widget 0.16.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate relm-gen-widget 0.16.0 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate relm-gen-widget 0.16.0
[INFO] finished tweaking crates.io crate relm-gen-widget 0.16.0
[INFO] tweaked toml for crates.io crate relm-gen-widget 0.16.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a623a8960873200f371b7f4fdf6a91e7d37ded60ec144ae3491a301b3e09b64d
[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" "a623a8960873200f371b7f4fdf6a91e7d37ded60ec144ae3491a301b3e09b64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a623a8960873200f371b7f4fdf6a91e7d37ded60ec144ae3491a301b3e09b64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a623a8960873200f371b7f4fdf6a91e7d37ded60ec144ae3491a301b3e09b64d", kill_on_drop: false }`
[INFO] [stdout] a623a8960873200f371b7f4fdf6a91e7d37ded60ec144ae3491a301b3e09b64d
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b1faba72ae3f91391cf70635b229d00bee2ea1b439eeae2461a5c5ec9a521a2
[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" "2b1faba72ae3f91391cf70635b229d00bee2ea1b439eeae2461a5c5ec9a521a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking relm-gen-widget v0.16.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::parse_expr`
[INFO] [stdout]    --> src/lib.rs:660:9
[INFO] [stdout]     |
[INFO] [stdout] 660 |     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/lib.rs:661:15
[INFO] [stdout]     |
[INFO] [stdout] 661 |     use syn::{ExprKind};
[INFO] [stdout]     |               ^^^^^^^^ no `ExprKind` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/gen.rs:659:17
[INFO] [stdout]     |
[INFO] [stdout] 659 |             let mut original_type = typ.clone();
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `relm-gen-widget`
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2b1faba72ae3f91391cf70635b229d00bee2ea1b439eeae2461a5c5ec9a521a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b1faba72ae3f91391cf70635b229d00bee2ea1b439eeae2461a5c5ec9a521a2", kill_on_drop: false }`
[INFO] [stdout] 2b1faba72ae3f91391cf70635b229d00bee2ea1b439eeae2461a5c5ec9a521a2