[INFO] crate thunk 0.3.0 is already in cache
[INFO] extracting crate thunk 0.3.0 into work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/thunk/0.3.0
[INFO] extracting crate thunk 0.3.0 into work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/thunk/0.3.0
[INFO] validating manifest of thunk-0.3.0 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of thunk-0.3.0 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing thunk-0.3.0
[INFO] finished frobbing thunk-0.3.0
[INFO] frobbed toml for thunk-0.3.0 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/thunk/0.3.0/Cargo.toml
[INFO] started frobbing thunk-0.3.0
[INFO] finished frobbing thunk-0.3.0
[INFO] frobbed toml for thunk-0.3.0 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/reg/thunk/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking thunk-0.3.0 against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-6/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/reg/thunk/0.3.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 99354030c4580015f1cfc0a33b35fdb5df6343ef48a07ef86ae9faa645467c03
[INFO] running `"docker" "start" "-a" "99354030c4580015f1cfc0a33b35fdb5df6343ef48a07ef86ae9faa645467c03"`
[INFO] [stderr]     Checking thunk v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/sync.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             /// If the `AtomicThunk` is evaluated, do nothing.
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 261 |             THUNK_EVALUATED => {}
[INFO] [stderr]     |             --------------------- rustdoc does not generate documentation for match arms
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/sync.rs:263:13
[INFO] [stderr]     |
[INFO] [stderr] 263 | /             /// If the `AtomicThunk` is `LOCKING` or `LOCKED`, wait until the thunk is
[INFO] [stderr] 264 | |             /// done evaluating and then return a reference to the inner value.
[INFO] [stderr]     | |_______________________________________________________________________________^
[INFO] [stderr] 265 |               THUNK_LOCKING | THUNK_LOCKED => unsafe { self.besiege() },
[INFO] [stderr]     |               --------------------------------------------------------- rustdoc does not generate documentation for match arms
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/sync.rs:267:13
[INFO] [stderr]     |
[INFO] [stderr] 267 | /             /// Only `THUNK_DEFERRED`, `THUNK_EVALUATED`, `THUNK_LOCKING`, and
[INFO] [stderr] 268 | |             /// `THUNK_LOCKED` are valid values of the flag.
[INFO] [stderr]     | |____________________________________________________________^
[INFO] [stderr] 269 | /             THUNK_INVALIDATED |
[INFO] [stderr] 270 | |             _ => unsafe { unreachable() },
[INFO] [stderr]     | |_________________________________________- rustdoc does not generate documentation for match arms
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/sync.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             /// If the `AtomicThunk` is evaluated, do nothing.
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 261 |             THUNK_EVALUATED => {}
[INFO] [stderr]     |             --------------------- rustdoc does not generate documentation for match arms
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/sync.rs:263:13
[INFO] [stderr]     |
[INFO] [stderr] 263 | /             /// If the `AtomicThunk` is `LOCKING` or `LOCKED`, wait until the thunk is
[INFO] [stderr] 264 | |             /// done evaluating and then return a reference to the inner value.
[INFO] [stderr]     | |_______________________________________________________________________________^
[INFO] [stderr] 265 |               THUNK_LOCKING | THUNK_LOCKED => unsafe { self.besiege() },
[INFO] [stderr]     |               --------------------------------------------------------- rustdoc does not generate documentation for match arms
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/sync.rs:267:13
[INFO] [stderr]     |
[INFO] [stderr] 267 | /             /// Only `THUNK_DEFERRED`, `THUNK_EVALUATED`, `THUNK_LOCKING`, and
[INFO] [stderr] 268 | |             /// `THUNK_LOCKED` are valid values of the flag.
[INFO] [stderr]     | |____________________________________________________________^
[INFO] [stderr] 269 | /             THUNK_INVALIDATED |
[INFO] [stderr] 270 | |             _ => unsafe { unreachable() },
[INFO] [stderr]     | |_________________________________________- rustdoc does not generate documentation for match arms
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stderr]  --> src/sync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stderr]  --> src/unsync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sync.rs:222:46
[INFO] [stderr]     |
[INFO] [stderr] 222 |             Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/unsync.rs:157:50
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `thunk`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stderr]  --> src/sync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stderr]  --> src/unsync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sync.rs:222:46
[INFO] [stderr]     |
[INFO] [stderr] 222 |             Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/unsync.rs:157:50
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `thunk`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "99354030c4580015f1cfc0a33b35fdb5df6343ef48a07ef86ae9faa645467c03"`
[INFO] running `"docker" "rm" "-f" "99354030c4580015f1cfc0a33b35fdb5df6343ef48a07ef86ae9faa645467c03"`
[INFO] [stdout] 99354030c4580015f1cfc0a33b35fdb5df6343ef48a07ef86ae9faa645467c03