[INFO] fetching crate rivulet 0.1.0...
[INFO] checking rivulet-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rivulet 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate rivulet 0.1.0
[INFO] finished tweaking crates.io crate rivulet 0.1.0
[INFO] tweaked toml for crates.io crate rivulet 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rivulet 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] 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 41 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding vmap v0.5.1 (available: v0.6.3)
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f355722cd2dd2885ff6399cac30ab07f071182504cf5dac183663ebd2a2ba08f
[INFO] running `Command { std: "docker" "start" "-a" "f355722cd2dd2885ff6399cac30ab07f071182504cf5dac183663ebd2a2ba08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f355722cd2dd2885ff6399cac30ab07f071182504cf5dac183663ebd2a2ba08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f355722cd2dd2885ff6399cac30ab07f071182504cf5dac183663ebd2a2ba08f", kill_on_drop: false }`
[INFO] [stdout] f355722cd2dd2885ff6399cac30ab07f071182504cf5dac183663ebd2a2ba08f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] aa2f3dbedf5991b830c260b9ac89cebe1a70c4062dabf8c045c936041f19ca58
[INFO] running `Command { std: "docker" "start" "-a" "aa2f3dbedf5991b830c260b9ac89cebe1a70c4062dabf8c045c936041f19ca58", kill_on_drop: false }`
[INFO] [stderr]     Checking system_error v0.1.1
[INFO] [stderr]     Checking seahash v4.1.0
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking vmap v0.5.1
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking rivulet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/slice.rs:47:21
[INFO] [stdout]    |
[INFO] [stdout] 47 |         Poll::Ready(Ok(len - index.min(len)))
[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<usize, Infallible>
[INFO] [stdout]    --> src/slice.rs:100:21
[INFO] [stdout]     |
[INFO] [stdout] 100 |         Poll::Ready(Ok(self.len - index.min(self.len)))
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rivulet` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "aa2f3dbedf5991b830c260b9ac89cebe1a70c4062dabf8c045c936041f19ca58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa2f3dbedf5991b830c260b9ac89cebe1a70c4062dabf8c045c936041f19ca58", kill_on_drop: false }`
[INFO] [stdout] aa2f3dbedf5991b830c260b9ac89cebe1a70c4062dabf8c045c936041f19ca58
