[INFO] fetching crate safe_wren 0.1.0...
[INFO] checking safe_wren-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate safe_wren 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate safe_wren 0.1.0
[INFO] finished tweaking crates.io crate safe_wren 0.1.0
[INFO] tweaked toml for crates.io crate safe_wren 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate safe_wren 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] crate crates.io crate safe_wren 0.1.0 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 00d771b2b7b340016fb8b712a04d27fc8dff12eb86388dbcc84974bcbadc6bef
[INFO] running `Command { std: "docker" "start" "-a" "00d771b2b7b340016fb8b712a04d27fc8dff12eb86388dbcc84974bcbadc6bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00d771b2b7b340016fb8b712a04d27fc8dff12eb86388dbcc84974bcbadc6bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00d771b2b7b340016fb8b712a04d27fc8dff12eb86388dbcc84974bcbadc6bef", kill_on_drop: false }`
[INFO] [stdout] 00d771b2b7b340016fb8b712a04d27fc8dff12eb86388dbcc84974bcbadc6bef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f64240c1dcf40b7053344a7323f176667c1caf8f7491ca41e68e94b4e7bb6919
[INFO] running `Command { std: "docker" "start" "-a" "f64240c1dcf40b7053344a7323f176667c1caf8f7491ca41e68e94b4e7bb6919", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling safe_wren v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `newSize` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         newSize: size_t,
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case: `new_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `userData` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         userData: *mut c_void,
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `user_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `className` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         className: *const c_char,
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `class_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isStatic` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         isStatic: bool,
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `is_static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `className` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         className: *const c_char,
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `class_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/ffi/c_api.rs:310:14
[INFO] [stdout]     |
[INFO] [stdout] 310 |     unsafe { Box::from_raw(vm_ptr) };
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 310 |     unsafe { let _ = Box::from_raw(vm_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/ffi/c_api.rs:532:24
[INFO] [stdout]     |
[INFO] [stdout] 532 |     vm.set_slot_double(usize::try_from(slot).unwrap(), value);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `safe_wren` (lib) due to 1 previous error; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable `newSize` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         newSize: size_t,
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case: `new_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `userData` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         userData: *mut c_void,
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `user_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `className` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         className: *const c_char,
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `class_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isStatic` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         isStatic: bool,
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `is_static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `className` should have a snake case name
[INFO] [stdout]   --> src/ffi/c_api.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         className: *const c_char,
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `class_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/ffi/c_api.rs:310:14
[INFO] [stdout]     |
[INFO] [stdout] 310 |     unsafe { Box::from_raw(vm_ptr) };
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 310 |     unsafe { let _ = Box::from_raw(vm_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/ffi/c_api.rs:532:24
[INFO] [stdout]     |
[INFO] [stdout] 532 |     vm.set_slot_double(usize::try_from(slot).unwrap(), value);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `safe_wren` (lib test) due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f64240c1dcf40b7053344a7323f176667c1caf8f7491ca41e68e94b4e7bb6919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f64240c1dcf40b7053344a7323f176667c1caf8f7491ca41e68e94b4e7bb6919", kill_on_drop: false }`
[INFO] [stdout] f64240c1dcf40b7053344a7323f176667c1caf8f7491ca41e68e94b4e7bb6919
