[INFO] fetching crate json_api_derive 0.1.0...
[INFO] checking json_api_derive-0.1.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate json_api_derive 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate json_api_derive 0.1.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5c4d677816e5530fe386ef2dd2be3e76be3576a0b1e0e3b3fb34c8b9b467b13
[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" "f5c4d677816e5530fe386ef2dd2be3e76be3576a0b1e0e3b3fb34c8b9b467b13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5c4d677816e5530fe386ef2dd2be3e76be3576a0b1e0e3b3fb34c8b9b467b13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5c4d677816e5530fe386ef2dd2be3e76be3576a0b1e0e3b3fb34c8b9b467b13", kill_on_drop: false }`
[INFO] [stdout] f5c4d677816e5530fe386ef2dd2be3e76be3576a0b1e0e3b3fb34c8b9b467b13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cd33a42cce41e02b6508f754ba3390222ae5f25eb4af64ef171bce0d920af1f
[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" "2cd33a42cce41e02b6508f754ba3390222ae5f25eb4af64ef171bce0d920af1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking 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[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]     = note: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]             `use quote::ToTokens;`
[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]     = note: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]             `use quote::ToTokens;`
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[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]     = note: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]             `use quote::ToTokens;`
[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]     = note: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]             `use quote::ToTokens;`
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "2cd33a42cce41e02b6508f754ba3390222ae5f25eb4af64ef171bce0d920af1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd33a42cce41e02b6508f754ba3390222ae5f25eb4af64ef171bce0d920af1f", kill_on_drop: false }`
[INFO] [stdout] 2cd33a42cce41e02b6508f754ba3390222ae5f25eb4af64ef171bce0d920af1f