[INFO] fetching crate hesoyam_core 0.1.6...
[INFO] testing hesoyam_core-0.1.6 against 1.55.0 for beta-1.56-1
[INFO] extracting crate hesoyam_core 0.1.6 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate hesoyam_core 0.1.6 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hesoyam_core 0.1.6
[INFO] finished tweaking crates.io crate hesoyam_core 0.1.6
[INFO] tweaked toml for crates.io crate hesoyam_core 0.1.6 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b25f16eba1dcb7098afc73a9d5963253d5f575dfdead6c3a560be7339e4503db
[INFO] running `Command { std: "docker" "start" "-a" "b25f16eba1dcb7098afc73a9d5963253d5f575dfdead6c3a560be7339e4503db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b25f16eba1dcb7098afc73a9d5963253d5f575dfdead6c3a560be7339e4503db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b25f16eba1dcb7098afc73a9d5963253d5f575dfdead6c3a560be7339e4503db", kill_on_drop: false }`
[INFO] [stdout] b25f16eba1dcb7098afc73a9d5963253d5f575dfdead6c3a560be7339e4503db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4aba0ff1230a932e6fc3200ab670fd3e36c2750b2bc860bc5c11f9bf8ae1c91e
[INFO] running `Command { std: "docker" "start" "-a" "4aba0ff1230a932e6fc3200ab670fd3e36c2750b2bc860bc5c11f9bf8ae1c91e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling memchr v2.4.1
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[INFO] [stderr]    Compiling unicode-xid v0.2.2
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[INFO] [stderr]    Compiling futures-task v0.3.17
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[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
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[INFO] [stderr]    Compiling hesoyam_core v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/model/field_type.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::export::{TokenStream2 as TokenStream, ToTokens};
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/model/field.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::export::Debug;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `Debug`
[INFO] [stdout]  --> src/model/field.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug, PartialEq, Eq, Hash)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/model/field_type.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hesoyam_core` due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4aba0ff1230a932e6fc3200ab670fd3e36c2750b2bc860bc5c11f9bf8ae1c91e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aba0ff1230a932e6fc3200ab670fd3e36c2750b2bc860bc5c11f9bf8ae1c91e", kill_on_drop: false }`
[INFO] [stdout] 4aba0ff1230a932e6fc3200ab670fd3e36c2750b2bc860bc5c11f9bf8ae1c91e