[INFO] fetching crate tor-async-utils 0.36.0...
[INFO] checking tor-async-utils-0.36.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate tor-async-utils 0.36.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tor-async-utils 0.36.0
[INFO] finished tweaking crates.io crate tor-async-utils 0.36.0
[INFO] tweaked toml for crates.io crate tor-async-utils 0.36.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tor-async-utils 0.36.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tor-async-utils 0.36.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffc02523f297eb2ebd86077d0885ca02ffadd22f8e4381236846037c78652865
[INFO] running `Command { std: "docker" "start" "-a" "ffc02523f297eb2ebd86077d0885ca02ffadd22f8e4381236846037c78652865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffc02523f297eb2ebd86077d0885ca02ffadd22f8e4381236846037c78652865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffc02523f297eb2ebd86077d0885ca02ffadd22f8e4381236846037c78652865", kill_on_drop: false }`
[INFO] [stdout] ffc02523f297eb2ebd86077d0885ca02ffadd22f8e4381236846037c78652865
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e666545a12ae562ce97879694b86c4e9c8b2140274fb8e631d7eff408be871f4
[INFO] running `Command { std: "docker" "start" "-a" "e666545a12ae562ce97879694b86c4e9c8b2140274fb8e631d7eff408be871f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
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[INFO] [stderr]     Checking thiserror v2.0.17
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[INFO] [stderr]     Checking derive_more v2.0.1
[INFO] [stderr]     Checking tor-general-addr v0.36.0
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking asynchronous-codec v0.7.0
[INFO] [stderr]     Checking futures v0.3.31
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[INFO] [stderr]     Checking tor-error v0.36.0
[INFO] [stderr]     Checking oneshot-fused-workaround v0.5.0
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[INFO] [stderr]     Checking tor-rtcompat v0.36.0
[INFO] [stderr]     Checking derive-deftly v1.3.0
[INFO] [stderr]     Checking tor-rtmock v0.36.0
[INFO] [stderr]     Checking tor-async-utils v0.36.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:455:49
[INFO] [stdout]     |
[INFO] [stdout] 455 |             let ret = w.prepare_send_from(async { Ok::<_, Infallible>(12) }).await;
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:455:51
[INFO] [stdout]     |
[INFO] [stdout] 455 |             let ret = w.prepare_send_from(async { Ok::<_, Infallible>(12) }).await;
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:528:27
[INFO] [stdout]     |
[INFO] [stdout] 528 |                   let ret = unfold
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 529 | |                     .prepare_send_from(async move { Ok::<_, Infallible>(v) })
[INFO] [stdout] 530 | |                     .await;
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<(Result<u8, Infallible>, SinkSendable<'_, Pin<Box<Buffer<futures::sink::Unfold<(), {closure@src/prepare_send.rs:513:52: 513:59}, {async block@src/prepare_send.rs:515:17: 515:27}>, u8>>>, u8>), Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:528:27
[INFO] [stdout]     |
[INFO] [stdout] 528 |                   let ret = unfold
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 529 | |                     .prepare_send_from(async move { Ok::<_, Infallible>(v) })
[INFO] [stdout] 530 | |                     .await;
[INFO] [stdout]     | |__________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mustuse_in_always_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:529:51
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     .prepare_send_from(async move { Ok::<_, Infallible>(v) })
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:529:53
[INFO] [stdout]     |
[INFO] [stdout] 529 |                     .prepare_send_from(async move { Ok::<_, Infallible>(v) })
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:530:22
[INFO] [stdout]     |
[INFO] [stdout] 530 |                     .await;
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<(Result<u8, Infallible>, SinkSendable<'_, Pin<Box<Buffer<futures::sink::Unfold<(), {closure@src/prepare_send.rs:513:52: 513:59}, {async block@src/prepare_send.rs:515:17: 515:27}>, u8>>>, u8>), Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:530:22
[INFO] [stdout]     |
[INFO] [stdout] 530 |                     .await;
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:528:27
[INFO] [stdout]     |
[INFO] [stdout] 528 |                   let ret = unfold
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 529 | |                     .prepare_send_from(async move { Ok::<_, Infallible>(v) })
[INFO] [stdout] 530 | |                     .await;
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<(Result<u8, Infallible>, SinkSendable<'_, Pin<Box<Buffer<futures::sink::Unfold<(), {closure@src/prepare_send.rs:513:52: 513:59}, {async block@src/prepare_send.rs:515:17: 515:27}>, u8>>>, u8>), Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:528:27
[INFO] [stdout]     |
[INFO] [stdout] 528 |                   let ret = unfold
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 529 | |                     .prepare_send_from(async move { Ok::<_, Infallible>(v) })
[INFO] [stdout] 530 | |                     .await;
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:531:39
[INFO] [stdout]     |
[INFO] [stdout] 531 |                 let (msg, sendable) = ret.unwrap();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:531:39
[INFO] [stdout]     |
[INFO] [stdout] 531 |                 let (msg, sendable) = ret.unwrap();
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<(Result<u8, Infallible>, SinkSendable<'_, Pin<Box<Buffer<futures::sink::Unfold<(), {closure@src/prepare_send.rs:513:52: 513:59}, {async block@src/prepare_send.rs:515:17: 515:27}>, u8>>>, u8>), Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:531:39
[INFO] [stdout]     |
[INFO] [stdout] 531 |                 let (msg, sendable) = ret.unwrap();
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/prepare_send.rs:532:27
[INFO] [stdout]     |
[INFO] [stdout] 532 |                 let msg = msg.unwrap();
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tor-async-utils` (lib test) due to 10 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e666545a12ae562ce97879694b86c4e9c8b2140274fb8e631d7eff408be871f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e666545a12ae562ce97879694b86c4e9c8b2140274fb8e631d7eff408be871f4", kill_on_drop: false }`
[INFO] [stdout] e666545a12ae562ce97879694b86c4e9c8b2140274fb8e631d7eff408be871f4
