[INFO] fetching crate binprot 0.1.7... [INFO] checking binprot-0.1.7 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate binprot 0.1.7 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate binprot 0.1.7 [INFO] finished tweaking crates.io crate binprot 0.1.7 [INFO] tweaked toml for crates.io crate binprot 0.1.7 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate binprot 0.1.7 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 binprot 0.1.7 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] [stderr] Blocking waiting for file lock on package cache [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] d7b408e9e29cc8975dbf37a1dacbd29caae2241924c7a48230e313b04e4464a0 [INFO] running `Command { std: "docker" "start" "-a" "d7b408e9e29cc8975dbf37a1dacbd29caae2241924c7a48230e313b04e4464a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d7b408e9e29cc8975dbf37a1dacbd29caae2241924c7a48230e313b04e4464a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d7b408e9e29cc8975dbf37a1dacbd29caae2241924c7a48230e313b04e4464a0", kill_on_drop: false }` [INFO] [stdout] d7b408e9e29cc8975dbf37a1dacbd29caae2241924c7a48230e313b04e4464a0 [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] b2e8d76779a28e7da3685b347e58427b8773a317c1ca9cc1c1c050da9782430f [INFO] running `Command { std: "docker" "start" "-a" "b2e8d76779a28e7da3685b347e58427b8773a317c1ca9cc1c1c050da9782430f", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling anyhow v1.0.42 [INFO] [stderr] Checking md5 v0.7.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling binprot_derive v0.1.7 [INFO] [stderr] Checking binprot v0.1.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `Pancakes` is never constructed [INFO] [stdout] --> tests/derive_use_tests.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | struct Pancakes(i64); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pancakes` is never constructed [INFO] [stdout] --> tests/async_tests.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct Pancakes(i64); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `MorePancakes` is never constructed [INFO] [stdout] --> tests/async_tests.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | struct MorePancakes(i64, f64, i64); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Breakfasts` is never constructed [INFO] [stdout] --> tests/async_tests.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | struct Breakfasts { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/rpc_client.rs:241:82 [INFO] [stdout] | [INFO] [stdout] 241 | fn rpc_impl(&mut self, _q: Self::Q) -> std::result::Result { [INFO] [stdout] | __________________________________________________________________________________^ [INFO] [stdout] 242 | | let result = self.0; [INFO] [stdout] 243 | | self.0 += 1; [INFO] [stdout] 244 | | Ok(result) [INFO] [stdout] 245 | | } [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 [INFO] [stdout] --> examples/rpc_client.rs:244:9 [INFO] [stdout] | [INFO] [stdout] 244 | Ok(result) [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `binprot` (example "rpc_client") due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "b2e8d76779a28e7da3685b347e58427b8773a317c1ca9cc1c1c050da9782430f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b2e8d76779a28e7da3685b347e58427b8773a317c1ca9cc1c1c050da9782430f", kill_on_drop: false }` [INFO] [stdout] b2e8d76779a28e7da3685b347e58427b8773a317c1ca9cc1c1c050da9782430f