[INFO] fetching crate primordial 0.3.0...
[INFO] checking primordial-0.3.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate primordial 0.3.0 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate primordial 0.3.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate primordial 0.3.0
[INFO] finished tweaking crates.io crate primordial 0.3.0
[INFO] tweaked toml for crates.io crate primordial 0.3.0 written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded const-default v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08588aae086b2f8720a9efbd08bc67487f0622b33d5d717c6b485e0b95098013
[INFO] running `Command { std: "docker" "start" "-a" "08588aae086b2f8720a9efbd08bc67487f0622b33d5d717c6b485e0b95098013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08588aae086b2f8720a9efbd08bc67487f0622b33d5d717c6b485e0b95098013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08588aae086b2f8720a9efbd08bc67487f0622b33d5d717c6b485e0b95098013", kill_on_drop: false }`
[INFO] [stdout] 08588aae086b2f8720a9efbd08bc67487f0622b33d5d717c6b485e0b95098013
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0ce4e08b07dfa5876b67c7c17001359f3916c9fb15ad6bbb3d03d3e1d604e49
[INFO] running `Command { std: "docker" "start" "-a" "e0ce4e08b07dfa5876b67c7c17001359f3916c9fb15ad6bbb3d03d3e1d604e49", kill_on_drop: false }`
[INFO] [stderr]     Checking primordial v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:318:9
[INFO] [stdout]     |
[INFO] [stdout] 318 |         Register::<usize>::from(0u8);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:319:9
[INFO] [stdout]     |
[INFO] [stdout] 319 |         Register::<usize>::from(0u16);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:320:9
[INFO] [stdout]     |
[INFO] [stdout] 320 |         Register::<usize>::from(0u32);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:321:9
[INFO] [stdout]     |
[INFO] [stdout] 321 |         Register::<usize>::from(0i8);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:322:9
[INFO] [stdout]     |
[INFO] [stdout] 322 |         Register::<usize>::from(0i16);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:323:9
[INFO] [stdout]     |
[INFO] [stdout] 323 |         Register::<usize>::from(0i32);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |         Register::<u64>::from(0usize);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:326:9
[INFO] [stdout]     |
[INFO] [stdout] 326 |         Register::<u64>::from(0isize);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:331:9
[INFO] [stdout]     |
[INFO] [stdout] 331 |         <*const u8>::from(Register::<usize>::from(0));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |         Register::<usize>::from(&0u8);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:333:9
[INFO] [stdout]     |
[INFO] [stdout] 333 |         Register::<usize>::from(&0u8 as *const u8);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         <*mut u8>::from(Register::<usize>::from(0));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         Register::<usize>::from(&mut 0u8);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/register.rs:337:9
[INFO] [stdout]     |
[INFO] [stdout] 337 |         Register::<usize>::from(&mut 0u8 as *mut u8);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "e0ce4e08b07dfa5876b67c7c17001359f3916c9fb15ad6bbb3d03d3e1d604e49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0ce4e08b07dfa5876b67c7c17001359f3916c9fb15ad6bbb3d03d3e1d604e49", kill_on_drop: false }`
[INFO] [stdout] e0ce4e08b07dfa5876b67c7c17001359f3916c9fb15ad6bbb3d03d3e1d604e49