[INFO] fetching crate obi-derive 0.0.1...
[INFO] checking obi-derive-0.0.1 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate obi-derive 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate obi-derive 0.0.1 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate obi-derive 0.0.1
[INFO] finished tweaking crates.io crate obi-derive 0.0.1
[INFO] tweaked toml for crates.io crate obi-derive 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "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" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "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] eb4a6ad035d83db5707f556137177d0151318486b504fd777df367fd59311e57
[INFO] running `Command { std: "docker" "start" "-a" "eb4a6ad035d83db5707f556137177d0151318486b504fd777df367fd59311e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb4a6ad035d83db5707f556137177d0151318486b504fd777df367fd59311e57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb4a6ad035d83db5707f556137177d0151318486b504fd777df367fd59311e57", kill_on_drop: false }`
[INFO] [stdout] eb4a6ad035d83db5707f556137177d0151318486b504fd777df367fd59311e57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c14fe09952818d4eed6efdd368b235a22a9fceab5139ead3ad1d729c0d39d182
[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" "c14fe09952818d4eed6efdd368b235a22a9fceab5139ead3ad1d729c0d39d182", kill_on_drop: false }`
[INFO] [stderr]     Checking quote v0.3.15
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking syn v1.0.60
[INFO] [stderr]     Checking obi-derive-internal v0.0.1
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/obi-derive-internal-0.0.1/src/helpers.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use syn::export::TokenStream2;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/obi-derive-internal-0.0.1/src/struct_dec.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use syn::export::TokenStream2;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/obi-derive-internal-0.0.1/src/struct_enc.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use syn::export::{Span, TokenStream2};
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/obi-derive-internal-0.0.1/src/struct_schema.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::export::{ToTokens, TokenStream2};
[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 `&syn::Ident` in the current scope
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/obi-derive-internal-0.0.1/src/struct_schema.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let name_str = name.to_token_stream().to_string();
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^ method not found in `&syn::Ident`
[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::Ident` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/obi-derive-internal-0.0.1/src/struct_schema.rs:21:64
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 let field_name = field.ident.as_ref().unwrap().to_token_stream().to_string();
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^ method not found in `&syn::Ident`
[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 6 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 `obi-derive-internal`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c14fe09952818d4eed6efdd368b235a22a9fceab5139ead3ad1d729c0d39d182", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c14fe09952818d4eed6efdd368b235a22a9fceab5139ead3ad1d729c0d39d182", kill_on_drop: false }`
[INFO] [stdout] c14fe09952818d4eed6efdd368b235a22a9fceab5139ead3ad1d729c0d39d182