[INFO] fetching crate rxrust 0.13.0...
[INFO] checking rxrust-0.13.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate rxrust 0.13.0 into /workspace/builds/worker-111/source
[INFO] validating manifest of crates.io crate rxrust 0.13.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rxrust 0.13.0
[INFO] finished tweaking crates.io crate rxrust 0.13.0
[INFO] tweaked toml for crates.io crate rxrust 0.13.0 written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f712be2a4160e94ffa3f5927d95ec7e0abdf4cdfee7da16acdece2384f2f98e6
[INFO] running `Command { std: "docker" "start" "-a" "f712be2a4160e94ffa3f5927d95ec7e0abdf4cdfee7da16acdece2384f2f98e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f712be2a4160e94ffa3f5927d95ec7e0abdf4cdfee7da16acdece2384f2f98e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f712be2a4160e94ffa3f5927d95ec7e0abdf4cdfee7da16acdece2384f2f98e6", kill_on_drop: false }`
[INFO] [stdout] f712be2a4160e94ffa3f5927d95ec7e0abdf4cdfee7da16acdece2384f2f98e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b44734776365ba57d61bb9409dcc1bc784983a0929439cc28e54f3996f11c66a
[INFO] running `Command { std: "docker" "start" "-a" "b44734776365ba57d61bb9409dcc1bc784983a0929439cc28e54f3996f11c66a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking futures-channel v0.3.17
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-process v1.2.0
[INFO] [stderr]     Checking async-std v1.10.0
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking rxrust v0.13.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused attribute `inline`
[INFO] [stdout]    --> src/observable/trivial.rs:113:3
[INFO] [stdout]     |
[INFO] [stdout] 113 |   #[inline]
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] note: the built-in attribute `inline` will be ignored, since it's applied to the macro invocation `never_emitter`
[INFO] [stdout]    --> src/observable/trivial.rs:114:3
[INFO] [stdout]     |
[INFO] [stdout] 114 |   never_emitter!(LocalSubscription, 'a);
[INFO] [stdout]     |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute `inline`
[INFO] [stdout]    --> src/observable/trivial.rs:118:3
[INFO] [stdout]     |
[INFO] [stdout] 118 |   #[inline]
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the built-in attribute `inline` will be ignored, since it's applied to the macro invocation `never_emitter`
[INFO] [stdout]    --> src/observable/trivial.rs:119:3
[INFO] [stdout]     |
[INFO] [stdout] 119 |   never_emitter!(SharedSubscription, Send + Sync + 'static);
[INFO] [stdout]     |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute `inline`
[INFO] [stdout]    --> src/observable/trivial.rs:113:3
[INFO] [stdout]     |
[INFO] [stdout] 113 |   #[inline]
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] note: the built-in attribute `inline` will be ignored, since it's applied to the macro invocation `never_emitter`
[INFO] [stdout]    --> src/observable/trivial.rs:114:3
[INFO] [stdout]     |
[INFO] [stdout] 114 |   never_emitter!(LocalSubscription, 'a);
[INFO] [stdout]     |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute `inline`
[INFO] [stdout]    --> src/observable/trivial.rs:118:3
[INFO] [stdout]     |
[INFO] [stdout] 118 |   #[inline]
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the built-in attribute `inline` will be ignored, since it's applied to the macro invocation `never_emitter`
[INFO] [stdout]    --> src/observable/trivial.rs:119:3
[INFO] [stdout]     |
[INFO] [stdout] 119 |   never_emitter!(SharedSubscription, Send + Sync + 'static);
[INFO] [stdout]     |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]    --> src/observable/from_future.rs:114:3
[INFO] [stdout]     |
[INFO] [stdout] 114 |   marker: TypeHint<(Item, Err)>,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_all.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   marker: TypeHint<(*const Item, *const Err)>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_err.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   marker: TypeHint<fn() -> (Item, Err)>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_next.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   marker: TypeHint<*const Item>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_comp.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   marker: TypeHint<*const Item>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]   --> src/ops/map.rs:64:3
[INFO] [stdout]    |
[INFO] [stdout] 64 |   marker: TypeHint<*const Item>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]   --> src/ops/map_to.rs:63:3
[INFO] [stdout]    |
[INFO] [stdout] 63 |   marker: TypeHint<*const Item>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]    --> src/observable/from_future.rs:114:3
[INFO] [stdout]     |
[INFO] [stdout] 114 |   marker: TypeHint<(Item, Err)>,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]   --> src/observable/observable_block_all.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   marker: TypeHint<(*const Item, *const Err)>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]   --> src/observable/observable_block.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   marker: TypeHint<*const Item>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_all.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   marker: TypeHint<(*const Item, *const Err)>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_err.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   marker: TypeHint<fn() -> (Item, Err)>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_next.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   marker: TypeHint<*const Item>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]  --> src/observable/observable_comp.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   marker: TypeHint<*const Item>,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]   --> src/ops/map.rs:64:3
[INFO] [stdout]    |
[INFO] [stdout] 64 |   marker: TypeHint<*const Item>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `marker`
[INFO] [stdout]   --> src/ops/map_to.rs:63:3
[INFO] [stdout]    |
[INFO] [stdout] 63 |   marker: TypeHint<*const Item>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.48s
[INFO] running `Command { std: "docker" "inspect" "b44734776365ba57d61bb9409dcc1bc784983a0929439cc28e54f3996f11c66a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b44734776365ba57d61bb9409dcc1bc784983a0929439cc28e54f3996f11c66a", kill_on_drop: false }`
[INFO] [stdout] b44734776365ba57d61bb9409dcc1bc784983a0929439cc28e54f3996f11c66a