[INFO] crate thunk 0.3.0 is already in cache
[INFO] extracting crate thunk 0.3.0 into work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/reg/thunk/0.3.0
[INFO] extracting crate thunk 0.3.0 into work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/thunk/0.3.0
[INFO] validating manifest of thunk-0.3.0 on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of thunk-0.3.0 on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-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-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/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-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/reg/thunk/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking thunk-0.3.0 against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-6/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 958585840b9a6b2ca64883a3910a8a7ecf3901584e9994d390d0be438cbc9b3c
[INFO] running `"docker" "start" "-a" "958585840b9a6b2ca64883a3910a8a7ecf3901584e9994d390d0be438cbc9b3c"`
[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] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sync.rs:66:19
[INFO] [stderr]    |
[INFO] [stderr] 66 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> ()`
[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/sync.rs:98:69
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sync.rs:221:33
[INFO] [stderr]     |
[INFO] [stderr] 221 |             let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[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] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/unsync.rs:38:19
[INFO] [stderr]    |
[INFO] [stderr] 38 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/unsync.rs:66:69
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/unsync.rs:156:37
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[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] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]  --> src/sync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/sync.rs:66:19
[INFO] [stderr]    |
[INFO] [stderr] 66 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/sync.rs:98:69
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/sync.rs:217:21
[INFO] [stderr]     |
[INFO] [stderr] 217 |     fn defer<'a, F: FnBox() -> T + 'a>(f: F) -> AtomicThunk<T>
[INFO] [stderr]     |                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/sync.rs:221:33
[INFO] [stderr]     |
[INFO] [stderr] 221 |             let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/sync.rs:222:46
[INFO] [stderr]     |
[INFO] [stderr] 222 |             Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]  --> src/unsync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/unsync.rs:38:19
[INFO] [stderr]    |
[INFO] [stderr] 38 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/unsync.rs:66:69
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/unsync.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn defer<'a, F: FnBox() -> T + 'a>(f: F) -> Thunk<T>
[INFO] [stderr]     |                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/unsync.rs:156:37
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/unsync.rs:157:50
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sync.rs:66:19
[INFO] [stderr]    |
[INFO] [stderr] 66 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> ()`
[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/sync.rs:98:69
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sync.rs:221:33
[INFO] [stderr]     |
[INFO] [stderr] 221 |             let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[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] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/unsync.rs:38:19
[INFO] [stderr]    |
[INFO] [stderr] 38 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/unsync.rs:66:69
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/unsync.rs:156:37
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> T`
[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] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]  --> src/sync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/sync.rs:66:19
[INFO] [stderr]    |
[INFO] [stderr] 66 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/sync.rs:98:69
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/sync.rs:217:21
[INFO] [stderr]     |
[INFO] [stderr] 217 |     fn defer<'a, F: FnBox() -> T + 'a>(f: F) -> AtomicThunk<T>
[INFO] [stderr]     |                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/sync.rs:221:33
[INFO] [stderr]     |
[INFO] [stderr] 221 |             let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/sync.rs:222:46
[INFO] [stderr]     |
[INFO] [stderr] 222 |             Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]  --> src/unsync.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/unsync.rs:38:19
[INFO] [stderr]    |
[INFO] [stderr] 38 |     deferred: Box<FnBox() -> ()>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]   --> src/unsync.rs:66:69
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let thunk_cast = Box::from_raw(Box::into_raw(thunk) as *mut FnBox() -> T);
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/unsync.rs:151:21
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn defer<'a, F: FnBox() -> T + 'a>(f: F) -> Thunk<T>
[INFO] [stderr]     |                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/unsync.rs:156:37
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 let thunk_raw: *mut FnBox() -> T = Box::into_raw(Box::new(f));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::boxed::FnBox': use `FnOnce`, `FnMut`, or `Fn` instead
[INFO] [stderr]    --> src/unsync.rs:157:50
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/sync.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |         unsafe {
[INFO] [stderr]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_unsafe)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/unsync.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         unsafe {
[INFO] [stderr]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/sync.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |         unsafe {
[INFO] [stderr]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_unsafe)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/unsync.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         unsafe {
[INFO] [stderr]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `"docker" "inspect" "958585840b9a6b2ca64883a3910a8a7ecf3901584e9994d390d0be438cbc9b3c"`
[INFO] running `"docker" "rm" "-f" "958585840b9a6b2ca64883a3910a8a7ecf3901584e9994d390d0be438cbc9b3c"`
[INFO] [stdout] 958585840b9a6b2ca64883a3910a8a7ecf3901584e9994d390d0be438cbc9b3c