[INFO] fetching crate json_api_derive 0.1.0...
[INFO] testing json_api_derive-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate json_api_derive 0.1.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate json_api_derive 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json_api_derive 0.1.0
[INFO] finished tweaking crates.io crate json_api_derive 0.1.0
[INFO] tweaked toml for crates.io crate json_api_derive 0.1.0 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] beb112107d7f87c5a35582cc25673910f23e7341653b4c4ed68c520fa5ca7acd
[INFO] running `Command { std: "docker" "start" "-a" "beb112107d7f87c5a35582cc25673910f23e7341653b4c4ed68c520fa5ca7acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "beb112107d7f87c5a35582cc25673910f23e7341653b4c4ed68c520fa5ca7acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beb112107d7f87c5a35582cc25673910f23e7341653b4c4ed68c520fa5ca7acd", kill_on_drop: false }`
[INFO] [stdout] beb112107d7f87c5a35582cc25673910f23e7341653b4c4ed68c520fa5ca7acd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f24c9e96a54beca2e31978d24f7a8d3410f7076736131c85108fba43eb7c1fdf
[INFO] running `Command { std: "docker" "start" "-a" "f24c9e96a54beca2e31978d24f7a8d3410f7076736131c85108fba43eb7c1fdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling json_api_derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/context/mod.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | use syn::export::ToTokens;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `to_token_stream` found for reference `&DeriveInput` in the current scope
[INFO] [stdout]    --> src/context/mod.rs:133:25
[INFO] [stdout]     |
[INFO] [stdout] 133 |                     ast.to_token_stream(),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^ method not found in `&DeriveInput`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 2   | use quote::ToTokens;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `to_token_stream` found for reference `&syn::Field` in the current scope
[INFO] [stdout]    --> src/context/mod.rs:158:47
[INFO] [stdout]     |
[INFO] [stdout] 158 | ...                   field.to_token_stream(),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^ method not found in `&syn::Field`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 2   | use quote::ToTokens;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json_api_derive` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "f24c9e96a54beca2e31978d24f7a8d3410f7076736131c85108fba43eb7c1fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f24c9e96a54beca2e31978d24f7a8d3410f7076736131c85108fba43eb7c1fdf", kill_on_drop: false }`
[INFO] [stdout] f24c9e96a54beca2e31978d24f7a8d3410f7076736131c85108fba43eb7c1fdf