[INFO] fetching crate wasm-coredump-builder 0.2.2...
[INFO] checking wasm-coredump-builder-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate wasm-coredump-builder 0.2.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate wasm-coredump-builder 0.2.2
[INFO] finished tweaking crates.io crate wasm-coredump-builder 0.2.2
[INFO] tweaked toml for crates.io crate wasm-coredump-builder 0.2.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasm-coredump-builder 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] 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 24 packages to latest compatible versions
[INFO] [stderr]       Adding wasm-encoder v0.23.0 (available: v0.240.0)
[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] 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] 75fb7bd5d3ce999d0efd582b4429e4e9e23b55da3cc1da9f93b8d570797ec091
[INFO] running `Command { std: "docker" "start" "-a" "75fb7bd5d3ce999d0efd582b4429e4e9e23b55da3cc1da9f93b8d570797ec091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75fb7bd5d3ce999d0efd582b4429e4e9e23b55da3cc1da9f93b8d570797ec091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75fb7bd5d3ce999d0efd582b4429e4e9e23b55da3cc1da9f93b8d570797ec091", kill_on_drop: false }`
[INFO] [stdout] 75fb7bd5d3ce999d0efd582b4429e4e9e23b55da3cc1da9f93b8d570797ec091
[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] ed1710598c8aee4d601e0cd8dc7615b251abd6ae7d6fd9f1e63a8f93c59e405e
[INFO] running `Command { std: "docker" "start" "-a" "ed1710598c8aee4d601e0cd8dc7615b251abd6ae7d6fd9f1e63a8f93c59e405e", kill_on_drop: false }`
[INFO] [stderr]     Checking wasm-coredump-types v0.2.2
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]     Checking colored v2.2.0
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking wasm-encoder v0.23.0
[INFO] [stderr]     Checking wasm-coredump-encoder v0.2.2
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking core-wasm-ast v0.2.2
[INFO] [stderr]     Checking wasm-printer v0.2.2
[INFO] [stderr]     Checking wasm-coredump-builder v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: core::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:134:59
[INFO] [stdout]     |
[INFO] [stdout] 134 |       pub fn serialize(self) -> Result<Vec<u8>, Infallible> {
[INFO] [stdout]     |  ___________________________________________________________^
[INFO] [stdout] 135 | |         let mut module = wasm_encoder::Module::new();
[INFO] [stdout] ...   |
[INFO] [stdout] 184 | |         Ok(module.finish())
[INFO] [stdout] 185 | |     }
[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: core::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |             wasm_coredump_encoder::encode_coredump_process(&mut data, &process_info)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: core::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |             wasm_coredump_encoder::encode_coredump_stack(&mut data, &thread)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: core::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 |         Ok(module.finish())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasm-coredump-builder` (lib) due to 4 previous errors
[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<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:134:59
[INFO] [stdout]     |
[INFO] [stdout] 134 |       pub fn serialize(self) -> Result<Vec<u8>, Infallible> {
[INFO] [stdout]     |  ___________________________________________________________^
[INFO] [stdout] 135 | |         let mut module = wasm_encoder::Module::new();
[INFO] [stdout] ...   |
[INFO] [stdout] 184 | |         Ok(module.finish())
[INFO] [stdout] 185 | |     }
[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<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |             wasm_coredump_encoder::encode_coredump_process(&mut data, &process_info)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |             wasm_coredump_encoder::encode_coredump_stack(&mut data, &thread)?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 |         Ok(module.finish())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasm-coredump-builder` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "ed1710598c8aee4d601e0cd8dc7615b251abd6ae7d6fd9f1e63a8f93c59e405e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed1710598c8aee4d601e0cd8dc7615b251abd6ae7d6fd9f1e63a8f93c59e405e", kill_on_drop: false }`
[INFO] [stdout] ed1710598c8aee4d601e0cd8dc7615b251abd6ae7d6fd9f1e63a8f93c59e405e