[INFO] fetching crate syn-select-next 0.3.0-alpha.1...
[INFO] testing syn-select-next-0.3.0-alpha.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate syn-select-next 0.3.0-alpha.1 into /workspace/builds/worker-6-tc1/source
[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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate syn-select-next 0.3.0-alpha.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 644bb7fe39f27ef02a2238d9386c0cbd4eeffdbd624461a64f2a7fac0f12fb16
[INFO] running `Command { std: "docker" "start" "-a" "644bb7fe39f27ef02a2238d9386c0cbd4eeffdbd624461a64f2a7fac0f12fb16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "644bb7fe39f27ef02a2238d9386c0cbd4eeffdbd624461a64f2a7fac0f12fb16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "644bb7fe39f27ef02a2238d9386c0cbd4eeffdbd624461a64f2a7fac0f12fb16", kill_on_drop: false }`
[INFO] [stdout] 644bb7fe39f27ef02a2238d9386c0cbd4eeffdbd624461a64f2a7fac0f12fb16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ec4b96408e3ac5ec9f7b4fa6b14d178d074238b34521c6a3e41772e9b259cd1
[INFO] running `Command { std: "docker" "start" "-a" "9ec4b96408e3ac5ec9f7b4fa6b14d178d074238b34521c6a3e41772e9b259cd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling syn-select-next v0.3.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.04s
[INFO] running `Command { std: "docker" "inspect" "9ec4b96408e3ac5ec9f7b4fa6b14d178d074238b34521c6a3e41772e9b259cd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ec4b96408e3ac5ec9f7b4fa6b14d178d074238b34521c6a3e41772e9b259cd1", kill_on_drop: false }`
[INFO] [stdout] 9ec4b96408e3ac5ec9f7b4fa6b14d178d074238b34521c6a3e41772e9b259cd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 324c953f8aa4606626eb905901c5f4734ab07adc9b13e0e226d36804ade0a274
[INFO] running `Command { std: "docker" "start" "-a" "324c953f8aa4606626eb905901c5f4734ab07adc9b13e0e226d36804ade0a274", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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]     |                                           required by this formatting parameter
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Debug` is not implemented for `syn::Item`
[INFO] [stdout]     = note: required for `&syn::Item` to implement `Debug`
[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]     |                                           required by this formatting parameter
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Debug` is not implemented for `syn::Item`
[INFO] [stdout]     = note: required for `&syn::Item` to implement `Debug`
[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" "324c953f8aa4606626eb905901c5f4734ab07adc9b13e0e226d36804ade0a274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "324c953f8aa4606626eb905901c5f4734ab07adc9b13e0e226d36804ade0a274", kill_on_drop: false }`
[INFO] [stdout] 324c953f8aa4606626eb905901c5f4734ab07adc9b13e0e226d36804ade0a274