[INFO] fetching crate vec-utils 0.3.0...
[INFO] checking vec-utils-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate vec-utils 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate vec-utils 0.3.0
[INFO] finished tweaking crates.io crate vec-utils 0.3.0
[INFO] tweaked toml for crates.io crate vec-utils 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vec-utils 0.3.0 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 62 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 27f5dbd4d68595c34305d2a9fa090a5b56a0d4dc6e100c302d397fcecbdeb2f6
[INFO] running `Command { std: "docker" "start" "-a" "27f5dbd4d68595c34305d2a9fa090a5b56a0d4dc6e100c302d397fcecbdeb2f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27f5dbd4d68595c34305d2a9fa090a5b56a0d4dc6e100c302d397fcecbdeb2f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27f5dbd4d68595c34305d2a9fa090a5b56a0d4dc6e100c302d397fcecbdeb2f6", kill_on_drop: false }`
[INFO] [stdout] 27f5dbd4d68595c34305d2a9fa090a5b56a0d4dc6e100c302d397fcecbdeb2f6
[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] f6b6c2307d64044ba1a61bfced4d47c4c8b1d3063ef07470c2181f0179756ebd
[INFO] running `Command { std: "docker" "start" "-a" "f6b6c2307d64044ba1a61bfced4d47c4c8b1d3063ef07470c2181f0179756ebd", kill_on_drop: false }`
[INFO] [stderr]     Checking vec-utils v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<U>, Infallible>
[INFO] [stdout]   --> src/vec.rs:87:15
[INFO] [stdout]    |
[INFO] [stdout] 87 |         match self.try_map(move |x| Ok::<_, Infallible>(f(x))) {
[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<Vec<V>, Infallible>
[INFO] [stdout]    --> src/vec.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |         match self.try_zip_with(other, move |x, y| Ok::<_, Infallible>(f(x, y))) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vec-utils` (lib) due to 2 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<Vec<U>, Infallible>
[INFO] [stdout]   --> src/vec.rs:87:15
[INFO] [stdout]    |
[INFO] [stdout] 87 |         match self.try_map(move |x| Ok::<_, Infallible>(f(x))) {
[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<Vec<V>, Infallible>
[INFO] [stdout]    --> src/vec.rs:108:15
[INFO] [stdout]     |
[INFO] [stdout] 108 |         match self.try_zip_with(other, move |x, y| Ok::<_, Infallible>(f(x, y))) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vec-utils` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f6b6c2307d64044ba1a61bfced4d47c4c8b1d3063ef07470c2181f0179756ebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6b6c2307d64044ba1a61bfced4d47c4c8b1d3063ef07470c2181f0179756ebd", kill_on_drop: false }`
[INFO] [stdout] f6b6c2307d64044ba1a61bfced4d47c4c8b1d3063ef07470c2181f0179756ebd
