[INFO] fetching crate rxs 0.1.0...
[INFO] checking rxs-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate rxs 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate rxs 0.1.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rxs 0.1.0
[INFO] finished tweaking crates.io crate rxs 0.1.0
[INFO] tweaked toml for crates.io crate rxs 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f3ab63eec9a8eca0683671601da7e12039496347cc6f9b1d3e78aff5c71b045
[INFO] running `Command { std: "docker" "start" "-a" "9f3ab63eec9a8eca0683671601da7e12039496347cc6f9b1d3e78aff5c71b045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f3ab63eec9a8eca0683671601da7e12039496347cc6f9b1d3e78aff5c71b045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f3ab63eec9a8eca0683671601da7e12039496347cc6f9b1d3e78aff5c71b045", kill_on_drop: false }`
[INFO] [stdout] 9f3ab63eec9a8eca0683671601da7e12039496347cc6f9b1d3e78aff5c71b045
[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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0aaee711ce80b1ebc4f361a8d4092b0d1b1cda7aa91cbab399e7acddbd479730
[INFO] running `Command { std: "docker" "start" "-a" "0aaee711ce80b1ebc4f361a8d4092b0d1b1cda7aa91cbab399e7acddbd479730", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking serde_test v1.0.177
[INFO] [stderr]    Compiling derive-where v1.2.7
[INFO] [stderr]     Checking rxs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `alloc::boxed::Box`
[INFO] [stdout]  --> src/observable/combine_latest.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use alloc::boxed::Box;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ops::Deref`
[INFO] [stdout]   --> src/observable/combine_latest.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use core::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]  --> src/observable/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ops::Deref`
[INFO] [stdout]   --> src/observable/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Debug`
[INFO] [stdout]  --> src/observer/transform.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `UnaryClosure`
[INFO] [stdout]  --> src/subject/transform.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::transform::{Transformer, UnaryClosure};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::cell::RefCell`
[INFO] [stdout]  --> src/subscription.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]  --> src/transform/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::boxed::Box`
[INFO] [stdout]  --> src/observable/combine_latest.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use alloc::boxed::Box;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ops::Deref`
[INFO] [stdout]   --> src/observable/combine_latest.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use core::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]  --> src/observable/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use core::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ops::Deref`
[INFO] [stdout]   --> src/observable/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use core::ops::Deref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]   --> src/observable/mod.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     use core::borrow::Borrow;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Debug`
[INFO] [stdout]  --> src/observer/transform.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::String`
[INFO] [stdout]   --> src/observer/mod.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use alloc::string::String;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::ToString`
[INFO] [stdout]    --> src/subject/behavior.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     use alloc::string::ToString;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_test::Token`
[INFO] [stdout]    --> src/subject/behavior.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |     use serde_test::Token;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `UnaryClosure`
[INFO] [stdout]  --> src/subject/transform.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::transform::{Transformer, UnaryClosure};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::cell::RefCell`
[INFO] [stdout]  --> src/subscription.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]  --> src/transform/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stdout]  --> src/recorder.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/subject/behavior.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<T: ?Sized + ToOwned + Debug> BehaviorSubject<T> {
[INFO] [stdout]    | ---------------------------------------------------- method in this implementation
[INFO] [stdout] 52 |     fn value(&self) -> T::Owned {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_inner` is never used
[INFO] [stdout]   --> src/subject/unite.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<ER, ABLE> UniteSubject<ER, ABLE> {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] 28 |     fn into_inner(self) -> (ER, ABLE) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stdout]  --> src/recorder.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/subject/passthrough.rs:121:19
[INFO] [stdout]     |
[INFO] [stdout] 121 |             move |val: &u8| {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/subject/mod.rs:141:22
[INFO] [stdout]     |
[INFO] [stdout] 141 |         fn test_type(s: &impl Subject<str>) {}
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_inner` is never used
[INFO] [stdout]   --> src/subject/unite.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<ER, ABLE> UniteSubject<ER, ABLE> {
[INFO] [stdout]    | ------------------------------------- method in this implementation
[INFO] [stdout] 28 |     fn into_inner(self) -> (ER, ABLE) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.78s
[INFO] running `Command { std: "docker" "inspect" "0aaee711ce80b1ebc4f361a8d4092b0d1b1cda7aa91cbab399e7acddbd479730", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aaee711ce80b1ebc4f361a8d4092b0d1b1cda7aa91cbab399e7acddbd479730", kill_on_drop: false }`
[INFO] [stdout] 0aaee711ce80b1ebc4f361a8d4092b0d1b1cda7aa91cbab399e7acddbd479730