[INFO] fetching crate syn-select-next 0.3.0-alpha.1...
[INFO] checking syn-select-next-0.3.0-alpha.1 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate syn-select-next 0.3.0-alpha.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate syn-select-next 0.3.0-alpha.1 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn-select-next 0.3.0-alpha.1
[INFO] finished tweaking crates.io crate syn-select-next 0.3.0-alpha.1
[INFO] tweaked toml for crates.io crate syn-select-next 0.3.0-alpha.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e920fb232ce55d18114f3f0591cad352a313e0500e7611a7b22e19fe6dda8183
[INFO] running `Command { std: "docker" "start" "-a" "e920fb232ce55d18114f3f0591cad352a313e0500e7611a7b22e19fe6dda8183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e920fb232ce55d18114f3f0591cad352a313e0500e7611a7b22e19fe6dda8183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e920fb232ce55d18114f3f0591cad352a313e0500e7611a7b22e19fe6dda8183", kill_on_drop: false }`
[INFO] [stdout] e920fb232ce55d18114f3f0591cad352a313e0500e7611a7b22e19fe6dda8183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 287a6e9e593cea5471a16ddd69a18d71fc43b29259cc50c1b55391c16c4673be
[INFO] running `Command { std: "docker" "start" "-a" "287a6e9e593cea5471a16ddd69a18d71fc43b29259cc50c1b55391c16c4673be", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]     Checking unicode-ident v1.0.14
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking syn v2.0.89
[INFO] [stderr]     Checking syn-select-next v0.3.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `syn::Item` doesn't implement `Debug`
[INFO] [stdout]    --> src/lib.rs:107:50
[INFO] [stdout]     |
[INFO] [stdout] 107 |             panic!("Result was wrong type {:?}", &result[0]);
[INFO] [stdout]     |                                                  ^^^^^^^^^^ `syn::Item` cannot be formatted using `{:?}` because it doesn't implement `Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Debug` is not implemented for `syn::Item`
[INFO] [stdout]     = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `syn::Item` doesn't implement `Debug`
[INFO] [stdout]    --> src/lib.rs:118:50
[INFO] [stdout]     |
[INFO] [stdout] 118 |             panic!("Result was wrong type {:?}", &result[0]);
[INFO] [stdout]     |                                                  ^^^^^^^^^^ `syn::Item` cannot be formatted using `{:?}` because it doesn't implement `Debug`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Debug` is not implemented for `syn::Item`
[INFO] [stdout]     = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0615]: attempted to take value of method `path` on type `Attribute`
[INFO] [stdout]    --> src/lib.rs:151:35
[INFO] [stdout]     |
[INFO] [stdout] 151 |             assert!(item.attrs[0].path.is_ident("doc"));
[INFO] [stdout]     |                                   ^^^^ method, not a field
[INFO] [stdout]     |
[INFO] [stdout] help: use parentheses to call the method
[INFO] [stdout]     |
[INFO] [stdout] 151 |             assert!(item.attrs[0].path().is_ident("doc"));
[INFO] [stdout]     |                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0615]: attempted to take value of method `path` on type `Attribute`
[INFO] [stdout]    --> src/lib.rs:152:35
[INFO] [stdout]     |
[INFO] [stdout] 152 |             assert!(item.attrs[1].path.is_ident("cfg"));
[INFO] [stdout]     |                                   ^^^^ method, not a field
[INFO] [stdout]     |
[INFO] [stdout] help: use parentheses to call the method
[INFO] [stdout]     |
[INFO] [stdout] 152 |             assert!(item.attrs[1].path().is_ident("cfg"));
[INFO] [stdout]     |                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0615]: attempted to take value of method `path` on type `Attribute`
[INFO] [stdout]    --> src/lib.rs:153:35
[INFO] [stdout]     |
[INFO] [stdout] 153 |             assert!(item.attrs[2].path.is_ident("serde"));
[INFO] [stdout]     |                                   ^^^^ method, not a field
[INFO] [stdout]     |
[INFO] [stdout] help: use parentheses to call the method
[INFO] [stdout]     |
[INFO] [stdout] 153 |             assert!(item.attrs[2].path().is_ident("serde"));
[INFO] [stdout]     |                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0615]: attempted to take value of method `path` on type `Attribute`
[INFO] [stdout]    --> src/lib.rs:154:35
[INFO] [stdout]     |
[INFO] [stdout] 154 |             assert!(item.attrs[3].path.is_ident("cfg"));
[INFO] [stdout]     |                                   ^^^^ method, not a field
[INFO] [stdout]     |
[INFO] [stdout] help: use parentheses to call the method
[INFO] [stdout]     |
[INFO] [stdout] 154 |             assert!(item.attrs[3].path().is_ident("cfg"));
[INFO] [stdout]     |                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0615]: attempted to take value of method `path` on type `Attribute`
[INFO] [stdout]    --> src/lib.rs:161:35
[INFO] [stdout]     |
[INFO] [stdout] 161 |             assert!(item.attrs[0].path.is_ident("cfg"));
[INFO] [stdout]     |                                   ^^^^ method, not a field
[INFO] [stdout]     |
[INFO] [stdout] help: use parentheses to call the method
[INFO] [stdout]     |
[INFO] [stdout] 161 |             assert!(item.attrs[0].path().is_ident("cfg"));
[INFO] [stdout]     |                                       ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0615.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn-select-next` (lib test) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "287a6e9e593cea5471a16ddd69a18d71fc43b29259cc50c1b55391c16c4673be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "287a6e9e593cea5471a16ddd69a18d71fc43b29259cc50c1b55391c16c4673be", kill_on_drop: false }`
[INFO] [stdout] 287a6e9e593cea5471a16ddd69a18d71fc43b29259cc50c1b55391c16c4673be