[INFO] fetching crate cbqn 0.2.2...
[INFO] checking cbqn-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cbqn 0.2.2 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate cbqn 0.2.2
[INFO] finished tweaking crates.io crate cbqn 0.2.2
[INFO] tweaked toml for crates.io crate cbqn 0.2.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cbqn 0.2.2 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] crate crates.io crate cbqn 0.2.2 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-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] 23931e2eb17cc5da8d1f410218df07f054196564eb7bcbd33b783ac7897117b1
[INFO] running `Command { std: "docker" "start" "-a" "23931e2eb17cc5da8d1f410218df07f054196564eb7bcbd33b783ac7897117b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23931e2eb17cc5da8d1f410218df07f054196564eb7bcbd33b783ac7897117b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23931e2eb17cc5da8d1f410218df07f054196564eb7bcbd33b783ac7897117b1", kill_on_drop: false }`
[INFO] [stdout] 23931e2eb17cc5da8d1f410218df07f054196564eb7bcbd33b783ac7897117b1
[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] c3dfb7818725ab500f06a122309eef64370ff08dc88a07d01b614e45aeeb0440
[INFO] running `Command { std: "docker" "start" "-a" "c3dfb7818725ab500f06a122309eef64370ff08dc88a07d01b614e45aeeb0440", kill_on_drop: false }`
[INFO] [stderr]    Compiling cbqn-sys v0.8.0
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking cbqn v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BQNElType_elt_unk`
[INFO] [stdout]   --> src/backend/mod.rs:18:42
[INFO] [stdout]    |
[INFO] [stdout] 18 |     BQNElType_elt_i32, BQNElType_elt_i8, BQNElType_elt_unk, BQNV,
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BQNElType_elt_unk`
[INFO] [stdout]   --> src/backend/mod.rs:18:42
[INFO] [stdout]    |
[INFO] [stdout] 18 |     BQNElType_elt_i32, BQNElType_elt_i8, BQNElType_elt_unk, BQNV,
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:65:42
[INFO] [stdout]    |
[INFO] [stdout] 65 |     Ok(unsafe { bindings::bqn_makeF64Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[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: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:69:42
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Ok(unsafe { bindings::bqn_makeI32Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:73:42
[INFO] [stdout]    |
[INFO] [stdout] 73 |     Ok(unsafe { bindings::bqn_makeI16Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:77:41
[INFO] [stdout]    |
[INFO] [stdout] 77 |     Ok(unsafe { bindings::bqn_makeI8Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:81:42
[INFO] [stdout]    |
[INFO] [stdout] 81 |     Ok(unsafe { bindings::bqn_makeObjVec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:85:43
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Ok(unsafe { bindings::bqn_makeUTF8Str(s.len().try_into().unwrap(), s.as_ptr() as *const i8) })
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cbqn` (lib) due to 6 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:65:42
[INFO] [stdout]    |
[INFO] [stdout] 65 |     Ok(unsafe { bindings::bqn_makeF64Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[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: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:69:42
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Ok(unsafe { bindings::bqn_makeI32Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:73:42
[INFO] [stdout]    |
[INFO] [stdout] 73 |     Ok(unsafe { bindings::bqn_makeI16Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:77:41
[INFO] [stdout]    |
[INFO] [stdout] 77 |     Ok(unsafe { bindings::bqn_makeI8Vec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:81:42
[INFO] [stdout]    |
[INFO] [stdout] 81 |     Ok(unsafe { bindings::bqn_makeObjVec(a.len().try_into().unwrap(), a.as_ptr()) })
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<usize, Infallible>
[INFO] [stdout]   --> src/backend/native.rs:85:43
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Ok(unsafe { bindings::bqn_makeUTF8Str(s.len().try_into().unwrap(), s.as_ptr() as *const i8) })
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cbqn` (lib test) due to 6 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "c3dfb7818725ab500f06a122309eef64370ff08dc88a07d01b614e45aeeb0440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3dfb7818725ab500f06a122309eef64370ff08dc88a07d01b614e45aeeb0440", kill_on_drop: false }`
[INFO] [stdout] c3dfb7818725ab500f06a122309eef64370ff08dc88a07d01b614e45aeeb0440