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# rustc version rustc 1.22.0-dev (b1cfd1750 2017-09-21)# docs.rs version cratesfyi 0.4.2 (13da7b2 2017-10-12)# build log Build failed, waiting for other jobs to finish... Updating registry `https://github.com/rust-lang/crates.io-index` Downloading rustc-ap-syntax_pos v56.0.0 Downloading rustc-ap-serialize v56.0.0 Downloading rustc-ap-rustc_data_structures v56.0.0 Fresh stable_deref_trait v1.0.0 Fresh unicode-width v0.1.4 Fresh term v0.4.6 Fresh libc v0.2.37 Compiling rustc-ap-serialize v56.0.0 Fresh smallvec v0.6.0 Fresh cfg-if v0.1.2 Fresh owning_ref v0.3.3 Fresh rand v0.4.2 Fresh log v0.4.1 Running `rustc --crate-name serialize .cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-serialize-56.0.0/lib.rs --crate-type lib --emit=dep-info,link -C debuginfo=2 -C metadata=bd3f3e1d4108c8d4 -C extra-filename=-bd3f3e1d4108c8d4 --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --cap-lints allow` Fresh parking_lot_core v0.2.13 Fresh log v0.3.9 Fresh ena v0.9.1 Compiling parking_lot v0.5.4 Running `rustc --crate-name parking_lot .cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.5.4/src/lib.rs --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg 'feature="owning_ref"' --cfg 'feature="parking_lot_core"' --cfg 'feature="nightly"' --cfg 'feature="default"' -C metadata=a843424cfc0ff9f1 -C extra-filename=-a843424cfc0ff9f1 --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern owning_ref=/home/cratesfyi/cratesfyi/debug/deps/libowning_ref-9ae3d472223e5e47.rlib --extern-version owning_ref=owning_ref,0.3.3 --extern parking_lot_core=/home/cratesfyi/cratesfyi/debug/deps/libparking_lot_core-dbcd97ea85538af8.rlib --extern-version parking_lot_core=parking_lot_core,0.2.13 --cap-lints allow` error: `std::mem::size_of` is not yet stable as a const fn --> .cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.5.4/src/raw_rwlock.rs:19:35 | 19 | const TOTAL_BITS: usize = ::std::mem::size_of::<usize>() * 8; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: in Nightly builds, add `#![feature(const_size_of)]` to the crate attributes to enable error: aborting due to previous error error: Could not compile `parking_lot`. Caused by: process didn't exit successfully: `rustc --crate-name parking_lot .cargo/registry/src/github.com-1ecc6299db9ec823/parking_lot-0.5.4/src/lib.rs --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg feature="owning_ref" --cfg feature="parking_lot_core" --cfg feature="nightly" --cfg feature="default" -C metadata=a843424cfc0ff9f1 -C extra-filename=-a843424cfc0ff9f1 --out-dir /home/cratesfyi/cratesfyi/debug/deps -L dependency=/home/cratesfyi/cratesfyi/debug/deps --extern owning_ref=/home/cratesfyi/cratesfyi/debug/deps/libowning_ref-9ae3d472223e5e47.rlib --extern-version owning_ref=owning_ref,0.3.3 --extern parking_lot_core=/home/cratesfyi/cratesfyi/debug/deps/libparking_lot_core-dbcd97ea85538af8.rlib --extern-version parking_lot_core=parking_lot_core,0.2.13 --cap-lints allow` (exit code: 101) error[E0277]: the `?` operator can only be applied to values that implement `std::ops::Try` --> .cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-serialize-56.0.0/json.rs:1055:22 | 1055 | target = target.find(*key)?; | ------------------ | | | the `?` operator cannot be applied to type `std::option::Option<&json::Json>` | in this macro invocation | = help: the trait `std::ops::Try` is not implemented for `std::option::Option<&json::Json>` = note: required by `std::ops::Try::into_result` error: aborting due to previous error thread 'main' panicked at 'build failed', src/bin/cratesfyi.rs:142 note: Run with `RUST_BACKTRACE=1` for a backtrace.