[INFO] fetching crate trait-match-proc-macro 0.1.0...
[INFO] testing trait-match-proc-macro-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate trait-match-proc-macro 0.1.0 into /workspace/builds/worker-91/source
[INFO] validating manifest of crates.io crate trait-match-proc-macro 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trait-match-proc-macro 0.1.0
[INFO] finished tweaking crates.io crate trait-match-proc-macro 0.1.0
[INFO] tweaked toml for crates.io crate trait-match-proc-macro 0.1.0 written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db2fd4042408dc21c19787fe5746ab9265822262f653febf9a2b6d0e8e8341a5
[INFO] running `Command { std: "docker" "start" "-a" "db2fd4042408dc21c19787fe5746ab9265822262f653febf9a2b6d0e8e8341a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db2fd4042408dc21c19787fe5746ab9265822262f653febf9a2b6d0e8e8341a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2fd4042408dc21c19787fe5746ab9265822262f653febf9a2b6d0e8e8341a5", kill_on_drop: false }`
[INFO] [stdout] db2fd4042408dc21c19787fe5746ab9265822262f653febf9a2b6d0e8e8341a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f352512b80e9b6ffafa2b27665274719850ca1d76da8f26ff3a8c0e5273ce41a
[INFO] running `Command { std: "docker" "start" "-a" "f352512b80e9b6ffafa2b27665274719850ca1d76da8f26ff3a8c0e5273ce41a", 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] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling trait-match-proc-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     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 `&proc_macro2::Ident` in the current scope
[INFO] [stdout]   --> src/lib.rs:18:42
[INFO] [stdout]    |
[INFO] [stdout] 18 |     format!("{}___sealed_trait_{}", name.to_token_stream(), descriptor)
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^ method not found in `&proc_macro2::Ident`
[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 `into_token_stream` found for struct `ItemTrait` in the current scope
[INFO] [stdout]    --> src/lib.rs:232:21
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let out = input.into_token_stream();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^ method not found in `ItemTrait`
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quote-1.0.9/src/to_tokens.rs:71:8
[INFO] [stdout]     |
[INFO] [stdout] 71  |     fn into_token_stream(self) -> TokenStream
[INFO] [stdout]     |        ----------------- the method is available for `ItemTrait` here
[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 `trait-match-proc-macro` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "f352512b80e9b6ffafa2b27665274719850ca1d76da8f26ff3a8c0e5273ce41a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f352512b80e9b6ffafa2b27665274719850ca1d76da8f26ff3a8c0e5273ce41a", kill_on_drop: false }`
[INFO] [stdout] f352512b80e9b6ffafa2b27665274719850ca1d76da8f26ff3a8c0e5273ce41a