[INFO] fetching crate eventuals 0.6.7...
[INFO] checking eventuals-0.6.7 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate eventuals 0.6.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate eventuals 0.6.7 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate eventuals 0.6.7
[INFO] finished tweaking crates.io crate eventuals 0.6.7
[INFO] tweaked toml for crates.io crate eventuals 0.6.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded never v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8adc934d204473202621131292d442e194bed56675b8a7435946269b841da012
[INFO] running `Command { std: "docker" "start" "-a" "8adc934d204473202621131292d442e194bed56675b8a7435946269b841da012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8adc934d204473202621131292d442e194bed56675b8a7435946269b841da012", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8adc934d204473202621131292d442e194bed56675b8a7435946269b841da012", kill_on_drop: false }`
[INFO] [stdout] 8adc934d204473202621131292d442e194bed56675b8a7435946269b841da012
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf7a66f3790bac5386cf017f3a3644063b4714954c81e544b82d6fa8a403a50f
[INFO] running `Command { std: "docker" "start" "-a" "cf7a66f3790bac5386cf017f3a3644063b4714954c81e544b82d6fa8a403a50f", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking never v0.1.0
[INFO] [stderr]     Checking by_address v1.1.0
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking eventuals v0.6.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Ptr` is imported redundantly
[INFO] [stdout]  --> src/eventual/change.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Ptr` is already imported here
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::Ptr;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/eventual/change.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use super::*;
[INFO] [stdout]    |     -------- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 10 |     sync::{Arc, Mutex},
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SharedState` is imported redundantly
[INFO] [stdout]  --> src/eventual/eventual.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::shared_state::SharedState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `SharedState` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/eventual/ptr.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 |     borrow::Borrow, cmp::Ordering, convert::AsRef, error::Error, fmt, hash::Hash, ops::Deref,
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Closed` is imported redundantly
[INFO] [stdout]  --> src/eventual/reader.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{change::ChangeReader, *};
[INFO] [stdout]   |                                   - the item `Closed` is already imported here
[INFO] [stdout] 2 | use crate::{error::Closed, IntoReader};
[INFO] [stdout]   |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Deref` is imported redundantly
[INFO] [stdout]   --> src/eventual/shared_state.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  |     ops::Deref,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     *,
[INFO] [stdout]    |     - the item `Deref` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/eventual/shared_state.rs:5:12
[INFO] [stdout]    |
[INFO] [stdout] 5  |     sync::{Arc, Mutex},
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     *,
[INFO] [stdout]    |     - the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Closed` is imported redundantly
[INFO] [stdout]  --> src/eventual/writer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{change::ChangeValNoWake, *};
[INFO] [stdout]   |                                      - the item `Closed` is already imported here
[INFO] [stdout] 4 | use crate::error::Closed;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/eventual/writer.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{change::ChangeValNoWake, *};
[INFO] [stdout]   |                                      - the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 9 |     sync::{Arc, Weak},
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]  --> src/combinators/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     self, select,
[INFO] [stdout]   |     ^^^^ the item `tokio` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Ptr` is imported redundantly
[INFO] [stdout]  --> src/eventual/change.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Ptr` is already imported here
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use crate::Ptr;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/eventual/change.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use super::*;
[INFO] [stdout]    |     -------- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 10 |     sync::{Arc, Mutex},
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SharedState` is imported redundantly
[INFO] [stdout]  --> src/eventual/eventual.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::shared_state::SharedState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `SharedState` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/eventual/ptr.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 |     borrow::Borrow, cmp::Ordering, convert::AsRef, error::Error, fmt, hash::Hash, ops::Deref,
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Closed` is imported redundantly
[INFO] [stdout]  --> src/eventual/reader.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{change::ChangeReader, *};
[INFO] [stdout]   |                                   - the item `Closed` is already imported here
[INFO] [stdout] 2 | use crate::{error::Closed, IntoReader};
[INFO] [stdout]   |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Deref` is imported redundantly
[INFO] [stdout]   --> src/eventual/shared_state.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  |     ops::Deref,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     *,
[INFO] [stdout]    |     - the item `Deref` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/eventual/shared_state.rs:5:12
[INFO] [stdout]    |
[INFO] [stdout] 5  |     sync::{Arc, Mutex},
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     *,
[INFO] [stdout]    |     - the item `Arc` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Closed` is imported redundantly
[INFO] [stdout]  --> src/eventual/writer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{change::ChangeValNoWake, *};
[INFO] [stdout]   |                                      - the item `Closed` is already imported here
[INFO] [stdout] 4 | use crate::error::Closed;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]  --> src/eventual/writer.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{change::ChangeValNoWake, *};
[INFO] [stdout]   |                                      - the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 9 |     sync::{Arc, Weak},
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tokio` is imported redundantly
[INFO] [stdout]  --> src/combinators/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     self, select,
[INFO] [stdout]   |     ^^^^ the item `tokio` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `idle` in this scope
[INFO] [stdout]   --> tests/idle.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         idle().await;
[INFO] [stdout]    |         ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `idle` in this scope
[INFO] [stdout]   --> tests/idle.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     idle().await;
[INFO] [stdout]    |     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `idle` in this scope
[INFO] [stdout]   --> tests/idle.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     idle().await;
[INFO] [stdout]    |     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `idle` in this scope
[INFO] [stdout]   --> tests/idle.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     idle().await;
[INFO] [stdout]    |     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eventuals` (test "idle") due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `eventuals::Eventual` in the current scope
[INFO] [stdout]   --> tests/eventual.rs:42:25
[INFO] [stdout]    |
[INFO] [stdout] 42 |     assert_eq!(eventual.subscriber_count(), 0);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 42 |     assert_eq!(eventual.subscribe(), 0);
[INFO] [stdout]    |                         ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `eventuals::Eventual` in the current scope
[INFO] [stdout]   --> tests/eventual.rs:44:25
[INFO] [stdout]    |
[INFO] [stdout] 44 |     assert_eq!(eventual.subscriber_count(), 1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 44 |     assert_eq!(eventual.subscribe(), 1);
[INFO] [stdout]    |                         ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `eventuals::Eventual` in the current scope
[INFO] [stdout]   --> tests/eventual.rs:46:25
[INFO] [stdout]    |
[INFO] [stdout] 46 |     assert_eq!(eventual.subscriber_count(), 2);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 46 |     assert_eq!(eventual.subscribe(), 2);
[INFO] [stdout]    |                         ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `eventuals::Eventual` in the current scope
[INFO] [stdout]   --> tests/eventual.rs:51:25
[INFO] [stdout]    |
[INFO] [stdout] 51 |     assert_eq!(eventual.subscriber_count(), 1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 51 |     assert_eq!(eventual.subscribe(), 1);
[INFO] [stdout]    |                         ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `eventuals::Eventual` in the current scope
[INFO] [stdout]   --> tests/eventual.rs:59:25
[INFO] [stdout]    |
[INFO] [stdout] 59 |     assert_eq!(eventual.subscriber_count(), 0);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 59 |     assert_eq!(eventual.subscribe(), 0);
[INFO] [stdout]    |                         ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `Arc<eventuals::Eventual<u32>>` in the current scope
[INFO] [stdout]    --> tests/eventual.rs:110:23
[INFO] [stdout]     |
[INFO] [stdout] 110 |     assert_eq!(source.subscriber_count(), 1);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 110 |     assert_eq!(source.subscribe(), 1);
[INFO] [stdout]     |                       ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `Arc<eventuals::Eventual<u32>>` in the current scope
[INFO] [stdout]    --> tests/eventual.rs:111:23
[INFO] [stdout]     |
[INFO] [stdout] 111 |     assert_eq!(mapped.subscriber_count(), 0);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 111 |     assert_eq!(mapped.subscribe(), 0);
[INFO] [stdout]     |                       ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `Arc<eventuals::Eventual<u32>>` in the current scope
[INFO] [stdout]    --> tests/eventual.rs:116:23
[INFO] [stdout]     |
[INFO] [stdout] 116 |     assert_eq!(source.subscriber_count(), 1);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 116 |     assert_eq!(source.subscribe(), 1);
[INFO] [stdout]     |                       ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `Arc<eventuals::Eventual<u32>>` in the current scope
[INFO] [stdout]    --> tests/eventual.rs:121:23
[INFO] [stdout]     |
[INFO] [stdout] 121 |     assert_eq!(source.subscriber_count(), 0);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `subscribe` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 121 |     assert_eq!(source.subscribe(), 0);
[INFO] [stdout]     |                       ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eventuals` (test "eventual") due to 10 previous errors
[INFO] running `Command { std: "docker" "inspect" "cf7a66f3790bac5386cf017f3a3644063b4714954c81e544b82d6fa8a403a50f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf7a66f3790bac5386cf017f3a3644063b4714954c81e544b82d6fa8a403a50f", kill_on_drop: false }`
[INFO] [stdout] cf7a66f3790bac5386cf017f3a3644063b4714954c81e544b82d6fa8a403a50f
