[INFO] fetching crate eventuals 0.6.7...
[INFO] testing eventuals-0.6.7 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate eventuals 0.6.7 into /workspace/builds/worker-5-tc2/source
[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-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate eventuals 0.6.7 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec59f03e30a0562b067b0c1129b0f8a8266d9faef38b217a9ed8634fcfcebdc5
[INFO] running `Command { std: "docker" "start" "-a" "ec59f03e30a0562b067b0c1129b0f8a8266d9faef38b217a9ed8634fcfcebdc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec59f03e30a0562b067b0c1129b0f8a8266d9faef38b217a9ed8634fcfcebdc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec59f03e30a0562b067b0c1129b0f8a8266d9faef38b217a9ed8634fcfcebdc5", kill_on_drop: false }`
[INFO] [stdout] ec59f03e30a0562b067b0c1129b0f8a8266d9faef38b217a9ed8634fcfcebdc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8409d67296444f3af61ff67057c9f9fe0a85b7246c5b35bf9902ddf0b3bd4124
[INFO] running `Command { std: "docker" "start" "-a" "8409d67296444f3af61ff67057c9f9fe0a85b7246c5b35bf9902ddf0b3bd4124", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling by_address v1.2.1
[INFO] [stderr]    Compiling never v0.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling eventuals v0.6.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value captured by `_writer` is never read
[INFO] [stdout]    --> src/combinators/mod.rs:241:14
[INFO] [stdout]     |
[INFO] [stdout] 241 |         drop(_writer);
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: did you mean to capture by reference instead?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value captured by `_writer` is never read
[INFO] [stdout]    --> src/combinators/mod.rs:260:14
[INFO] [stdout]     |
[INFO] [stdout] 260 |         drop(_writer);
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/eventual/reader.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn next(&mut self) -> Next<T> {
[INFO] [stdout]    |                 ^^^^^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn next(&mut self) -> Next<'_, T> {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.13s
[INFO] running `Command { std: "docker" "inspect" "8409d67296444f3af61ff67057c9f9fe0a85b7246c5b35bf9902ddf0b3bd4124", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8409d67296444f3af61ff67057c9f9fe0a85b7246c5b35bf9902ddf0b3bd4124", kill_on_drop: false }`
[INFO] [stdout] 8409d67296444f3af61ff67057c9f9fe0a85b7246c5b35bf9902ddf0b3bd4124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77cb9b8237574dc9c794dbb057bdd10ffafd7f7ad0fec77b77af3db2d242c0d7
[INFO] running `Command { std: "docker" "start" "-a" "77cb9b8237574dc9c794dbb057bdd10ffafd7f7ad0fec77b77af3db2d242c0d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling eventuals v0.6.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value captured by `_writer` is never read
[INFO] [stdout]    --> src/combinators/mod.rs:241:14
[INFO] [stdout]     |
[INFO] [stdout] 241 |         drop(_writer);
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: did you mean to capture by reference instead?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value captured by `_writer` is never read
[INFO] [stdout]    --> src/combinators/mod.rs:260:14
[INFO] [stdout]     |
[INFO] [stdout] 260 |         drop(_writer);
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/eventual/reader.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn next(&mut self) -> Next<T> {
[INFO] [stdout]    |                 ^^^^^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn next(&mut self) -> Next<'_, T> {
[INFO] [stdout]    |                                    +++
[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] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `subscriber_count` found for struct `eventuals::Eventual<T>` 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.subscriber_count(), 0);
[INFO] [stdout] 42 +     assert_eq!(eventual.subscribe(), 0);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eventuals` (test "idle") due to 4 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<T>` 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.subscriber_count(), 1);
[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<T>` 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.subscriber_count(), 2);
[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<T>` 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.subscriber_count(), 1);
[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<T>` 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.subscriber_count(), 0);
[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.subscriber_count(), 1);
[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.subscriber_count(), 0);
[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.subscriber_count(), 1);
[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.subscriber_count(), 0);
[INFO] [stdout] 121 +     assert_eq!(source.subscribe(), 0);
[INFO] [stdout]     |
[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 9 previous errors
[INFO] [stdout] warning: value captured by `_writer` is never read
[INFO] [stdout]    --> src/combinators/mod.rs:241:14
[INFO] [stdout]     |
[INFO] [stdout] 241 |         drop(_writer);
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: did you mean to capture by reference instead?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value captured by `_writer` is never read
[INFO] [stdout]    --> src/combinators/mod.rs:260:14
[INFO] [stdout]     |
[INFO] [stdout] 260 |         drop(_writer);
[INFO] [stdout]     |              ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/eventual/reader.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn next(&mut self) -> Next<T> {
[INFO] [stdout]    |                 ^^^^^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn next(&mut self) -> Next<'_, T> {
[INFO] [stdout]    |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "77cb9b8237574dc9c794dbb057bdd10ffafd7f7ad0fec77b77af3db2d242c0d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77cb9b8237574dc9c794dbb057bdd10ffafd7f7ad0fec77b77af3db2d242c0d7", kill_on_drop: false }`
[INFO] [stdout] 77cb9b8237574dc9c794dbb057bdd10ffafd7f7ad0fec77b77af3db2d242c0d7
