[INFO] fetching crate flipflop 0.1.0...
[INFO] checking flipflop-0.1.0 against try#264a7c4a1c917c83d13895a31231f9d93c7b67e1 for pr-132289
[INFO] extracting crate flipflop 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate flipflop 0.1.0 on toolchain 264a7c4a1c917c83d13895a31231f9d93c7b67e1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flipflop 0.1.0
[INFO] finished tweaking crates.io crate flipflop 0.1.0
[INFO] tweaked toml for crates.io crate flipflop 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd27584693f4d53f63b664350ec8d2791671ee5db78cb2e544c25d2976aeedbb
[INFO] running `Command { std: "docker" "start" "-a" "dd27584693f4d53f63b664350ec8d2791671ee5db78cb2e544c25d2976aeedbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd27584693f4d53f63b664350ec8d2791671ee5db78cb2e544c25d2976aeedbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd27584693f4d53f63b664350ec8d2791671ee5db78cb2e544c25d2976aeedbb", kill_on_drop: false }`
[INFO] [stdout] dd27584693f4d53f63b664350ec8d2791671ee5db78cb2e544c25d2976aeedbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+264a7c4a1c917c83d13895a31231f9d93c7b67e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3bfdb6d957aecef0b0fb7f0a54fd3a859d0549bdb431658c67e891e686bc1f3
[INFO] running `Command { std: "docker" "start" "-a" "d3bfdb6d957aecef0b0fb7f0a54fd3a859d0549bdb431658c67e891e686bc1f3", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking flipflop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:31:34
[INFO] [stdout]     |
[INFO] [stdout] 31  |     pub fn erased_accum(self) -> CapacityExhausted<'a, dyn 'a + AccumObj<Item = A::Item>> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] note: required by a bound in `CapacityExhausted`
[INFO] [stdout]    --> src/error.rs:19:46
[INFO] [stdout]     |
[INFO] [stdout] 19  | pub struct CapacityExhausted<'a, A: ?Sized + AccumObj> {
[INFO] [stdout]     |                                              ^^^^^^^^ required by this bound in `CapacityExhausted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:31:34
[INFO] [stdout]     |
[INFO] [stdout] 31  |     pub fn erased_accum(self) -> CapacityExhausted<'a, dyn 'a + AccumObj<Item = A::Item>> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] note: required by a bound in `CapacityExhausted`
[INFO] [stdout]    --> src/error.rs:19:46
[INFO] [stdout]     |
[INFO] [stdout] 19  | pub struct CapacityExhausted<'a, A: ?Sized + AccumObj> {
[INFO] [stdout]     |                                              ^^^^^^^^ required by this bound in `CapacityExhausted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:295:34
[INFO] [stdout]     |
[INFO] [stdout] 295 |     pub fn erased_accum(self) -> AccumVerifyError<'a, dyn 'a + AccumObj<Item = A::Item>, S, V> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:295:34
[INFO] [stdout]     |
[INFO] [stdout] 295 |     pub fn erased_accum(self) -> AccumVerifyError<'a, dyn 'a + AccumObj<Item = A::Item>, S, V> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:33:13
[INFO] [stdout]     |
[INFO] [stdout] 33  |             item: self.item,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `dyn AccumObj<Item = <A as Accum>::Item>: Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:297:73
[INFO] [stdout]     |
[INFO] [stdout] 297 |             AccumVerifyError::Accum(err) => AccumVerifyError::Accum(err.erased_accum()),
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^ the trait `Accum` is not implemented for `dyn AccumObj<Item = <A as Accum>::Item>`, which is required by `dyn AccumObj<Item = <A as Accum>::Item>: AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `dyn AccumObj<Item = <A as Accum>::Item>` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] note: required by a bound in `CapacityExhausted`
[INFO] [stdout]    --> src/error.rs:19:46
[INFO] [stdout]     |
[INFO] [stdout] 19  | pub struct CapacityExhausted<'a, A: ?Sized + AccumObj> {
[INFO] [stdout]     |                                              ^^^^^^^^ required by this bound in `CapacityExhausted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:297:45
[INFO] [stdout]     |
[INFO] [stdout] 297 |             AccumVerifyError::Accum(err) => AccumVerifyError::Accum(err.erased_accum()),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:33:13
[INFO] [stdout]     |
[INFO] [stdout] 33  |             item: self.item,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `dyn AccumObj<Item = <A as Accum>::Item>: Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:297:73
[INFO] [stdout]     |
[INFO] [stdout] 297 |             AccumVerifyError::Accum(err) => AccumVerifyError::Accum(err.erased_accum()),
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^ the trait `Accum` is not implemented for `dyn AccumObj<Item = <A as Accum>::Item>`, which is required by `dyn AccumObj<Item = <A as Accum>::Item>: AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `dyn AccumObj<Item = <A as Accum>::Item>` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] note: required by a bound in `CapacityExhausted`
[INFO] [stdout]    --> src/error.rs:19:46
[INFO] [stdout]     |
[INFO] [stdout] 19  | pub struct CapacityExhausted<'a, A: ?Sized + AccumObj> {
[INFO] [stdout]     |                                              ^^^^^^^^ required by this bound in `CapacityExhausted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): Accum` is not satisfied
[INFO] [stdout]    --> src/error.rs:297:45
[INFO] [stdout]     |
[INFO] [stdout] 297 |             AccumVerifyError::Accum(err) => AccumVerifyError::Accum(err.erased_accum()),
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Accum` is not implemented for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)`, which is required by `(dyn AccumObj<Item = <A as Accum>::Item> + 'a): AccumObj`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `Accum`:
[INFO] [stdout]               Bounded<T, N>
[INFO] [stdout]               accum::alloc::Unbounded<T>
[INFO] [stdout] note: required for `(dyn AccumObj<Item = <A as Accum>::Item> + 'a)` to implement `AccumObj`
[INFO] [stdout]    --> src/accum.rs:228:25
[INFO] [stdout]     |
[INFO] [stdout] 228 | impl<A: ?Sized + Accum> AccumObj for A {
[INFO] [stdout]     |                  -----  ^^^^^^^^     ^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  unsatisfied trait bound introduced here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flipflop` (lib) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flipflop` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "d3bfdb6d957aecef0b0fb7f0a54fd3a859d0549bdb431658c67e891e686bc1f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3bfdb6d957aecef0b0fb7f0a54fd3a859d0549bdb431658c67e891e686bc1f3", kill_on_drop: false }`
[INFO] [stdout] d3bfdb6d957aecef0b0fb7f0a54fd3a859d0549bdb431658c67e891e686bc1f3