[INFO] fetching crate lease 0.5.2...
[INFO] checking lease-0.5.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate lease 0.5.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate lease 0.5.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate lease 0.5.2
[INFO] tweaked toml for crates.io crate lease 0.5.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lease 0.5.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f9cae4bd646eab3148d31ae000a1b57e7644077e98fd2f61a8ee5add41adb22
[INFO] running `Command { std: "docker" "start" "-a" "2f9cae4bd646eab3148d31ae000a1b57e7644077e98fd2f61a8ee5add41adb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f9cae4bd646eab3148d31ae000a1b57e7644077e98fd2f61a8ee5add41adb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f9cae4bd646eab3148d31ae000a1b57e7644077e98fd2f61a8ee5add41adb22", kill_on_drop: false }`
[INFO] [stdout] 2f9cae4bd646eab3148d31ae000a1b57e7644077e98fd2f61a8ee5add41adb22
[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 -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] 01c2c5eb3b094256116ea6af56f386ff656a01348edd9acb0abc1f9eb69565fb
[INFO] running `Command { std: "docker" "start" "-a" "01c2c5eb3b094256116ea6af56f386ff656a01348edd9acb0abc1f9eb69565fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking lease v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/init.rs:356:90
[INFO] [stdout]     |
[INFO] [stdout] 356 |     let init_pool = InitPool::<u8, InitTryFn<_, core::convert::Infallible>>::new_from(|| Ok(42_u8));
[INFO] [stdout]     |                                                                                          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Lease<u8>, Infallible>
[INFO] [stdout]    --> src/init.rs:358:17
[INFO] [stdout]     |
[INFO] [stdout] 358 |     assert_eq!(*init_pool.try_get_or_try_new().unwrap(), 42);
[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/init.rs:363:101
[INFO] [stdout]     |
[INFO] [stdout] 363 |     let init_pool = InitPool::<u8, InitTryFnAsync<_, core::convert::Infallible>>::new_from(|| async { Ok(42_u8) }.boxed());
[INFO] [stdout]     |                                                                                                     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/init.rs:363:103
[INFO] [stdout]     |
[INFO] [stdout] 363 |     let init_pool = InitPool::<u8, InitTryFnAsync<_, core::convert::Infallible>>::new_from(|| async { Ok(42_u8) }.boxed());
[INFO] [stdout]     |                                                                                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Lease<u8>, Infallible>
[INFO] [stdout]    --> src/init.rs:365:17
[INFO] [stdout]     |
[INFO] [stdout] 365 |     assert_eq!(*init_pool.get_or_try_new().await.unwrap(), 42);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Lease<u8>, Infallible>
[INFO] [stdout]    --> src/init.rs:365:44
[INFO] [stdout]     |
[INFO] [stdout] 365 |     assert_eq!(*init_pool.get_or_try_new().await.unwrap(), 42);
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Lease<u8>, Infallible>
[INFO] [stdout]    --> src/init.rs:365:17
[INFO] [stdout]     |
[INFO] [stdout] 365 |     assert_eq!(*init_pool.get_or_try_new().await.unwrap(), 42);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/init.rs:371:13
[INFO] [stdout]     |
[INFO] [stdout] 371 |       async { Ok::<_, core::convert::Infallible>(42_u8) }.boxed()
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/init.rs:371:15
[INFO] [stdout]     |
[INFO] [stdout] 371 |       async { Ok::<_, core::convert::Infallible>(42_u8) }.boxed()
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Lease<u8>, Infallible>
[INFO] [stdout]    --> src/init.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |     let value = init_pool.get_or_try_new().await.unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Lease<u8>, Infallible>
[INFO] [stdout]    --> src/init.rs:377:44
[INFO] [stdout]     |
[INFO] [stdout] 377 |     let value = init_pool.get_or_try_new().await.unwrap();
[INFO] [stdout]     |                                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this type continue be must used: Result<Lease<u8>, Infallible>
[INFO] [stdout]    --> src/init.rs:377:17
[INFO] [stdout]     |
[INFO] [stdout] 377 |     let value = init_pool.get_or_try_new().await.unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lease` (lib test) due to 5 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "01c2c5eb3b094256116ea6af56f386ff656a01348edd9acb0abc1f9eb69565fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c2c5eb3b094256116ea6af56f386ff656a01348edd9acb0abc1f9eb69565fb", kill_on_drop: false }`
[INFO] [stdout] 01c2c5eb3b094256116ea6af56f386ff656a01348edd9acb0abc1f9eb69565fb