[INFO] fetching crate async-refresh 0.1.0...
[INFO] checking async-refresh-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate async-refresh 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate async-refresh 0.1.0
[INFO] finished tweaking crates.io crate async-refresh 0.1.0
[INFO] tweaked toml for crates.io crate async-refresh 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate async-refresh 0.1.0 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 async-refresh 0.1.0 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 70de310d1da9a987a20651089c3bcc3387315f3c38e4d44de37d511f4870618b
[INFO] running `Command { std: "docker" "start" "-a" "70de310d1da9a987a20651089c3bcc3387315f3c38e4d44de37d511f4870618b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70de310d1da9a987a20651089c3bcc3387315f3c38e4d44de37d511f4870618b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70de310d1da9a987a20651089c3bcc3387315f3c38e4d44de37d511f4870618b", kill_on_drop: false }`
[INFO] [stdout] 70de310d1da9a987a20651089c3bcc3387315f3c38e4d44de37d511f4870618b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 236f3f7edef18aa22548ad0bdcbd337e70755c427864ce61206fde00b1ca48e1
[INFO] running `Command { std: "docker" "start" "-a" "236f3f7edef18aa22548ad0bdcbd337e70755c427864ce61206fde00b1ca48e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]     Checking async-refresh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:192:19
[INFO] [stdout]     |
[INFO] [stdout] 192 |           let res = self
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 193 | |             .try_build(move |is_refresh| {
[INFO] [stdout] 194 | |                 let fut = mk_fut(is_refresh);
[INFO] [stdout] 195 | |                 async move {
[INFO] [stdout] ...   |
[INFO] [stdout] 199 | |             })
[INFO] [stdout] 200 | |             .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<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:200:14
[INFO] [stdout]     |
[INFO] [stdout] 200 |             .await;
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:192:19
[INFO] [stdout]     |
[INFO] [stdout] 192 |           let res = self
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 193 | |             .try_build(move |is_refresh| {
[INFO] [stdout] 194 | |                 let fut = mk_fut(is_refresh);
[INFO] [stdout] 195 | |                 async move {
[INFO] [stdout] ...   |
[INFO] [stdout] 199 | |             })
[INFO] [stdout] 200 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:202:16
[INFO] [stdout]     |
[INFO] [stdout] 202 |         absurd(res)
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-refresh` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:192:19
[INFO] [stdout]     |
[INFO] [stdout] 192 |           let res = self
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 193 | |             .try_build(move |is_refresh| {
[INFO] [stdout] 194 | |                 let fut = mk_fut(is_refresh);
[INFO] [stdout] 195 | |                 async move {
[INFO] [stdout] ...   |
[INFO] [stdout] 199 | |             })
[INFO] [stdout] 200 | |             .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<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:200:14
[INFO] [stdout]     |
[INFO] [stdout] 200 |             .await;
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:192:19
[INFO] [stdout]     |
[INFO] [stdout] 192 |           let res = self
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 193 | |             .try_build(move |is_refresh| {
[INFO] [stdout] 194 | |                 let fut = mk_fut(is_refresh);
[INFO] [stdout] 195 | |                 async move {
[INFO] [stdout] ...   |
[INFO] [stdout] 199 | |             })
[INFO] [stdout] 200 | |             .await;
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<T, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:202:16
[INFO] [stdout]     |
[INFO] [stdout] 202 |         absurd(res)
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 233 | |             .try_build(|_| async { Ok::<_, Infallible>(42_u32) })
[INFO] [stdout] 234 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:233:34
[INFO] [stdout]     |
[INFO] [stdout] 233 |             .try_build(|_| async { Ok::<_, Infallible>(42_u32) })
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:233:36
[INFO] [stdout]     |
[INFO] [stdout] 233 |             .try_build(|_| async { Ok::<_, Infallible>(42_u32) })
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:234:14
[INFO] [stdout]     |
[INFO] [stdout] 234 |             .await
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 233 | |             .try_build(|_| async { Ok::<_, Infallible>(42_u32) })
[INFO] [stdout] 234 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:245:24
[INFO] [stdout]     |
[INFO] [stdout] 245 |               async move {
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 246 | |                 let mut lock = counter_clone.write();
[INFO] [stdout] 247 | |                 *lock += 1;
[INFO] [stdout] 248 | |                 Ok::<u32, Infallible>(*lock)
[INFO] [stdout] 249 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:248:17
[INFO] [stdout]     |
[INFO] [stdout] 248 |                 Ok::<u32, Infallible>(*lock)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 253 | |             .duration(duration)
[INFO] [stdout] 254 | |             .try_build(mk_fut)
[INFO] [stdout] 255 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:255:14
[INFO] [stdout]     |
[INFO] [stdout] 255 |             .await
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:252:17
[INFO] [stdout]     |
[INFO] [stdout] 252 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 253 | |             .duration(duration)
[INFO] [stdout] 254 | |             .try_build(mk_fut)
[INFO] [stdout] 255 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:272:24
[INFO] [stdout]     |
[INFO] [stdout] 272 |               async move {
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 273 | |                 let mut lock = counter_clone.write();
[INFO] [stdout] 274 | |                 *lock += 1;
[INFO] [stdout] 275 | |                 Ok::<u32, Infallible>(*lock)
[INFO] [stdout] 276 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:275:17
[INFO] [stdout]     |
[INFO] [stdout] 275 |                 Ok::<u32, Infallible>(*lock)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 280 | |             .duration(duration)
[INFO] [stdout] 281 | |             .exit(move || *exited_clone.write() = true)
[INFO] [stdout] 282 | |             .try_build(mk_fut)
[INFO] [stdout] 283 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:283:14
[INFO] [stdout]     |
[INFO] [stdout] 283 |             .await
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:279:17
[INFO] [stdout]     |
[INFO] [stdout] 279 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 280 | |             .duration(duration)
[INFO] [stdout] 281 | |             .exit(move || *exited_clone.write() = true)
[INFO] [stdout] 282 | |             .try_build(mk_fut)
[INFO] [stdout] 283 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:306:24
[INFO] [stdout]     |
[INFO] [stdout] 306 |               async move {
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 307 | |                 let mut lock = counter_clone.write();
[INFO] [stdout] 308 | |                 *lock += 1;
[INFO] [stdout] 309 | |                 Ok::<u32, Infallible>(*lock)
[INFO] [stdout] 310 | |             }
[INFO] [stdout]     | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/lib.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 Ok::<u32, Infallible>(*lock)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:313:17
[INFO] [stdout]     |
[INFO] [stdout] 313 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 314 | |             .duration(duration)
[INFO] [stdout] 315 | |             .success(move |_| *success_clone.write() += 1)
[INFO] [stdout] 316 | |             .try_build(mk_fut)
[INFO] [stdout] 317 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:317:14
[INFO] [stdout]     |
[INFO] [stdout] 317 |             .await
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Refreshed<u32, Infallible>, Infallible>
[INFO] [stdout]    --> src/lib.rs:313:17
[INFO] [stdout]     |
[INFO] [stdout] 313 |           let x = Refreshed::builder()
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 314 | |             .duration(duration)
[INFO] [stdout] 315 | |             .success(move |_| *success_clone.write() += 1)
[INFO] [stdout] 316 | |             .try_build(mk_fut)
[INFO] [stdout] 317 | |             .await
[INFO] [stdout]     | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-refresh` (lib test) due to 24 previous errors
[INFO] running `Command { std: "docker" "inspect" "236f3f7edef18aa22548ad0bdcbd337e70755c427864ce61206fde00b1ca48e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "236f3f7edef18aa22548ad0bdcbd337e70755c427864ce61206fde00b1ca48e1", kill_on_drop: false }`
[INFO] [stdout] 236f3f7edef18aa22548ad0bdcbd337e70755c427864ce61206fde00b1ca48e1