[INFO] fetching crate dict_derive 0.3.0...
[INFO] checking dict_derive-0.3.0 against try#82acd1d76add2232e19c1f0feb250d2a19ec6efe for pr-81213
[INFO] extracting crate dict_derive 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate dict_derive 0.3.0 on toolchain 82acd1d76add2232e19c1f0feb250d2a19ec6efe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dict_derive 0.3.0
[INFO] finished tweaking crates.io crate dict_derive 0.3.0
[INFO] tweaked toml for crates.io crate dict_derive 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0664ac1061f74f4ac64a05bacfcb0b5ce181ede97857d51149ac69bf42c7752e
[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" "0664ac1061f74f4ac64a05bacfcb0b5ce181ede97857d51149ac69bf42c7752e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0664ac1061f74f4ac64a05bacfcb0b5ce181ede97857d51149ac69bf42c7752e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0664ac1061f74f4ac64a05bacfcb0b5ce181ede97857d51149ac69bf42c7752e", kill_on_drop: false }`
[INFO] [stdout] 0664ac1061f74f4ac64a05bacfcb0b5ce181ede97857d51149ac69bf42c7752e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e98b7fac5632dcc7500c33c6116cc4e3334bd2a2562e3af3cde4b0462c840ca1
[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" "e98b7fac5632dcc7500c33c6116cc4e3334bd2a2562e3af3cde4b0462c840ca1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling pyo3 v0.12.4
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking quote v1.0.8
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking dict_derive v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/from.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     export::TokenStream2,
[INFO] [stdout]   |     ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> src/from.rs:45:35
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn extraction_functions() -> syn::export::TokenStream2 {
[INFO] [stdout]    |                                   ^^^^^^ could not find `export` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dict_derive`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e98b7fac5632dcc7500c33c6116cc4e3334bd2a2562e3af3cde4b0462c840ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e98b7fac5632dcc7500c33c6116cc4e3334bd2a2562e3af3cde4b0462c840ca1", kill_on_drop: false }`
[INFO] [stdout] e98b7fac5632dcc7500c33c6116cc4e3334bd2a2562e3af3cde4b0462c840ca1