[INFO] fetching crate futures-finally 0.1.0-alpha.2... [INFO] checking futures-finally-0.1.0-alpha.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate futures-finally 0.1.0-alpha.2 into /workspace/builds/worker-5-tc2/source [INFO] started tweaking crates.io crate futures-finally 0.1.0-alpha.2 [INFO] finished tweaking crates.io crate futures-finally 0.1.0-alpha.2 [INFO] tweaked toml for crates.io crate futures-finally 0.1.0-alpha.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate futures-finally 0.1.0-alpha.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 19 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] 94893ee7b867ea95dd6f60232fdecb80f9b66da378c1e1a8cf3b38e561f8c7e9 [INFO] running `Command { std: "docker" "start" "-a" "94893ee7b867ea95dd6f60232fdecb80f9b66da378c1e1a8cf3b38e561f8c7e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "94893ee7b867ea95dd6f60232fdecb80f9b66da378c1e1a8cf3b38e561f8c7e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94893ee7b867ea95dd6f60232fdecb80f9b66da378c1e1a8cf3b38e561f8c7e9", kill_on_drop: false }` [INFO] [stdout] 94893ee7b867ea95dd6f60232fdecb80f9b66da378c1e1a8cf3b38e561f8c7e9 [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] 393999ab3efc51fa19d25e198f589b18c200c6a2253332b78bb43645a531adfa [INFO] running `Command { std: "docker" "start" "-a" "393999ab3efc51fa19d25e198f589b18c200c6a2253332b78bb43645a531adfa", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.110 [INFO] [stderr] Compiling futures-macro v0.3.31 [INFO] [stderr] Compiling pin-project-internal v1.1.10 [INFO] [stderr] Checking futures-util v0.3.31 [INFO] [stderr] Checking pin-project v1.1.10 [INFO] [stderr] Checking futures-executor v0.3.31 [INFO] [stderr] Checking futures v0.3.31 [INFO] [stderr] Checking futures-finally v0.1.0-alpha.2 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:295:13 [INFO] [stdout] | [INFO] [stdout] 295 | / futures::future::ok::<_, Infallible>(0) [INFO] [stdout] 296 | | .then_try_finally(|| async { [INFO] [stdout] 297 | | val = 1; [INFO] [stdout] 298 | | }) [INFO] [stdout] 299 | | .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 [INFO] [stdout] --> src/lib.rs:299:18 [INFO] [stdout] | [INFO] [stdout] 299 | .await [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:295:13 [INFO] [stdout] | [INFO] [stdout] 295 | / futures::future::ok::<_, Infallible>(0) [INFO] [stdout] 296 | | .then_try_finally(|| async { [INFO] [stdout] 297 | | val = 1; [INFO] [stdout] 298 | | }) [INFO] [stdout] 299 | | .await [INFO] [stdout] | |______________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:336:45 [INFO] [stdout] | [INFO] [stdout] 336 | futures::stream::once(async { Ok::<_, Infallible>(0) }).try_finally(|| async { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:336:47 [INFO] [stdout] | [INFO] [stdout] 336 | futures::stream::once(async { Ok::<_, Infallible>(0) }).try_finally(|| async { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:342:37 [INFO] [stdout] | [INFO] [stdout] 342 | while let Ok(Some(v)) = st.try_next().await { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:342:51 [INFO] [stdout] | [INFO] [stdout] 342 | while let Ok(Some(v)) = st.try_next().await { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:342:37 [INFO] [stdout] | [INFO] [stdout] 342 | while let Ok(Some(v)) = st.try_next().await { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `futures-finally` (lib test) due to 8 previous errors [INFO] running `Command { std: "docker" "inspect" "393999ab3efc51fa19d25e198f589b18c200c6a2253332b78bb43645a531adfa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "393999ab3efc51fa19d25e198f589b18c200c6a2253332b78bb43645a531adfa", kill_on_drop: false }` [INFO] [stdout] 393999ab3efc51fa19d25e198f589b18c200c6a2253332b78bb43645a531adfa