[INFO] fetching crate proptest-lockstep 0.1.1...
[INFO] checking proptest-lockstep-0.1.1 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate proptest-lockstep 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate proptest-lockstep 0.1.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate proptest-lockstep 0.1.1
[INFO] tweaked toml for crates.io crate proptest-lockstep 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate proptest-lockstep 0.1.1 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate proptest-lockstep 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f80fb6c4f73a5bbf11afd349d102cfbab06f5d0a3b33180d6afd95d35b3394b
[INFO] running `Command { std: "docker" "start" "-a" "1f80fb6c4f73a5bbf11afd349d102cfbab06f5d0a3b33180d6afd95d35b3394b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f80fb6c4f73a5bbf11afd349d102cfbab06f5d0a3b33180d6afd95d35b3394b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f80fb6c4f73a5bbf11afd349d102cfbab06f5d0a3b33180d6afd95d35b3394b", kill_on_drop: false }`
[INFO] [stdout] 1f80fb6c4f73a5bbf11afd349d102cfbab06f5d0a3b33180d6afd95d35b3394b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a296e306d8c89172689894df58ec6ebc43ac5f505210d1353ba341b8866b4e9f
[INFO] running `Command { std: "docker" "start" "-a" "a296e306d8c89172689894df58ec6ebc43ac5f505210d1353ba341b8866b4e9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.47
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[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tokio-macros v2.6.1
[INFO] [stderr]    Compiling proptest-lockstep-derive v0.1.0
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[INFO] [stdout] warning: unused import: `proptest_lockstep::bridge::*`
[INFO] [stdout]   --> examples/certified_synthesis.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use proptest_lockstep::bridge::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BridgeCertificate`, `CertifiedLockstepBridge`, and `verify_certified`
[INFO] [stdout]   --> examples/certified_synthesis.rs:12:36
[INFO] [stdout]    |
[INFO] [stdout] 12 | use proptest_lockstep::certified::{CertifiedLockstepBridge, verify_certified, BridgeCertificate};
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CommutativityConfig`
[INFO] [stdout]   --> examples/commutativity_spec.rs:27:64
[INFO] [stdout]    |
[INFO] [stdout] 27 | use proptest_lockstep::commutativity::{CommutativitySpecModel, CommutativityConfig};
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EventualConsistencyConfig`
[INFO] [stdout]   --> examples/crdt_counter.rs:31:61
[INFO] [stdout]    |
[INFO] [stdout] 31 | use proptest_lockstep::eventual::{EventualConsistencyModel, EventualConsistencyConfig};
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EventualConsistencyConfig`
[INFO] [stdout]   --> examples/eventual_cache.rs:20:61
[INFO] [stdout]    |
[INFO] [stdout] 20 | use proptest_lockstep::eventual::{EventualConsistencyModel, EventualConsistencyConfig};
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DifferentialConfig`
[INFO] [stdout]   --> examples/differential_bridge.rs:24:64
[INFO] [stdout]    |
[INFO] [stdout] 24 | use proptest_lockstep::differential::{DifferentialBridgeModel, DifferentialConfig};
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SessionConsistencyConfig`
[INFO] [stdout]   --> examples/session_kv.rs:17:59
[INFO] [stdout]    |
[INFO] [stdout] 17 | use proptest_lockstep::session::{SessionConsistencyModel, SessionConsistencyConfig, SessionGuarantee};
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BridgePrecision`, `IncrementalComposition`, `run_composed_test`, and `verify_composition`
[INFO] [stdout]   --> examples/compositional_test.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     run_composed_test, verify_composition, IncrementalComposition, BridgePrecision,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EventualConsistencyConfig`
[INFO] [stdout]   --> examples/crdts_library.rs:23:61
[INFO] [stdout]    |
[INFO] [stdout] 23 | use proptest_lockstep::eventual::{EventualConsistencyModel, EventualConsistencyConfig};
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `BoundedChannel` is never constructed
[INFO] [stdout]   --> examples/bounded_channel.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct BoundedChannel<T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proptest-lockstep` (example "bounded_channel") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]   --> examples/crdt_counter.rs:98:15
[INFO] [stdout]    |
[INFO] [stdout] 98 |         for (&node, view) in self.views.iter_mut() {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]   --> examples/commutativity_spec.rs:83:19
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn gen_action(state: &KvModel, _: &TypedEnv) -> BoxedStrategy<Box<dyn AnyAction>> {
[INFO] [stdout]    |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `TreiberStack` is never constructed
[INFO] [stdout]   --> examples/treiber_stack.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct TreiberStack<T> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proptest-lockstep` (example "treiber_stack") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a296e306d8c89172689894df58ec6ebc43ac5f505210d1353ba341b8866b4e9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a296e306d8c89172689894df58ec6ebc43ac5f505210d1353ba341b8866b4e9f", kill_on_drop: false }`
[INFO] [stdout] a296e306d8c89172689894df58ec6ebc43ac5f505210d1353ba341b8866b4e9f
