[INFO] fetching crate thunk 0.3.0...
[INFO] checking thunk-0.3.0 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate thunk 0.3.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate thunk 0.3.0 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thunk 0.3.0
[INFO] finished tweaking crates.io crate thunk 0.3.0
[INFO] tweaked toml for crates.io crate thunk 0.3.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 161326d46c77eb98b4b8be245bbe27e8b15bde51259248dd5f12e7ced72c31f2
[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" "161326d46c77eb98b4b8be245bbe27e8b15bde51259248dd5f12e7ced72c31f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "161326d46c77eb98b4b8be245bbe27e8b15bde51259248dd5f12e7ced72c31f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "161326d46c77eb98b4b8be245bbe27e8b15bde51259248dd5f12e7ced72c31f2", kill_on_drop: false }`
[INFO] [stdout] 161326d46c77eb98b4b8be245bbe27e8b15bde51259248dd5f12e7ced72c31f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bb17996a84ffe7ba1329e3796632dc5790318ba7151f155a41edb7a92ff8493
[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" "8bb17996a84ffe7ba1329e3796632dc5790318ba7151f155a41edb7a92ff8493", kill_on_drop: false }`
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking thunk v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/sync.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 | #[allow(unions_with_drop_fields)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/unsync.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[allow(unions_with_drop_fields)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/sync.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 | #[allow(unions_with_drop_fields)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/unsync.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[allow(unions_with_drop_fields)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> src/sync.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> src/unsync.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sync.rs:222:46
[INFO] [stdout]     |
[INFO] [stdout] 222 |             Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/sync.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |             /// If the `AtomicThunk` is evaluated, do nothing.
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 261 |             THUNK_EVALUATED => {}
[INFO] [stdout]     |             --------------------- rustdoc does not generate documentation for match arms
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/sync.rs:263:13
[INFO] [stdout]     |
[INFO] [stdout] 263 | /             /// If the `AtomicThunk` is `LOCKING` or `LOCKED`, wait until the thunk is
[INFO] [stdout] 264 | |             /// done evaluating and then return a reference to the inner value.
[INFO] [stdout]     | |_______________________________________________________________________________^
[INFO] [stdout] 265 |               THUNK_LOCKING | THUNK_LOCKED => unsafe { self.besiege() },
[INFO] [stdout]     |               --------------------------------------------------------- rustdoc does not generate documentation for match arms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/sync.rs:267:13
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             /// Only `THUNK_DEFERRED`, `THUNK_EVALUATED`, `THUNK_LOCKING`, and
[INFO] [stdout] 268 | |             /// `THUNK_LOCKED` are valid values of the flag.
[INFO] [stdout]     | |____________________________________________________________^
[INFO] [stdout] 269 | /             THUNK_INVALIDATED |
[INFO] [stdout] 270 | |             _ => unsafe { unreachable() },
[INFO] [stdout]     | |_________________________________________- rustdoc does not generate documentation for match arms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/unsync.rs:157:50
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> src/sync.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stdout]  --> src/unsync.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::boxed::FnBox;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thunk`
[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] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/sync.rs:222:46
[INFO] [stdout]     |
[INFO] [stdout] 222 |             Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/sync.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |             /// If the `AtomicThunk` is evaluated, do nothing.
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 261 |             THUNK_EVALUATED => {}
[INFO] [stdout]     |             --------------------- rustdoc does not generate documentation for match arms
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/sync.rs:263:13
[INFO] [stdout]     |
[INFO] [stdout] 263 | /             /// If the `AtomicThunk` is `LOCKING` or `LOCKED`, wait until the thunk is
[INFO] [stdout] 264 | |             /// done evaluating and then return a reference to the inner value.
[INFO] [stdout]     | |_______________________________________________________________________________^
[INFO] [stdout] 265 |               THUNK_LOCKING | THUNK_LOCKED => unsafe { self.besiege() },
[INFO] [stdout]     |               --------------------------------------------------------- rustdoc does not generate documentation for match arms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/sync.rs:267:13
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             /// Only `THUNK_DEFERRED`, `THUNK_EVALUATED`, `THUNK_LOCKING`, and
[INFO] [stdout] 268 | |             /// `THUNK_LOCKED` are valid values of the flag.
[INFO] [stdout]     | |____________________________________________________________^
[INFO] [stdout] 269 | /             THUNK_INVALIDATED |
[INFO] [stdout] 270 | |             _ => unsafe { unreachable() },
[INFO] [stdout]     | |_________________________________________- rustdoc does not generate documentation for match arms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/unsync.rs:157:50
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 Box::from_raw(thunk_raw as *mut (FnBox() -> () + 'static))
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox() -> () + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8bb17996a84ffe7ba1329e3796632dc5790318ba7151f155a41edb7a92ff8493", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bb17996a84ffe7ba1329e3796632dc5790318ba7151f155a41edb7a92ff8493", kill_on_drop: false }`
[INFO] [stdout] 8bb17996a84ffe7ba1329e3796632dc5790318ba7151f155a41edb7a92ff8493