[INFO] fetching crate discard 1.0.4... [INFO] testing discard-1.0.4 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1 [INFO] extracting crate discard 1.0.4 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate discard 1.0.4 [INFO] finished tweaking crates.io crate discard 1.0.4 [INFO] tweaked toml for crates.io crate discard 1.0.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate discard 1.0.4 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1e5d6aaee565740811f03dc6425bf1929787027a7c53638b4b4258a2ff6d0ab4 [INFO] running `Command { std: "docker" "start" "-a" "1e5d6aaee565740811f03dc6425bf1929787027a7c53638b4b4258a2ff6d0ab4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1e5d6aaee565740811f03dc6425bf1929787027a7c53638b4b4258a2ff6d0ab4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e5d6aaee565740811f03dc6425bf1929787027a7c53638b4b4258a2ff6d0ab4", kill_on_drop: false }` [INFO] [stdout] 1e5d6aaee565740811f03dc6425bf1929787027a7c53638b4b4258a2ff6d0ab4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 067fa122dd14945688b301ce8c2cc0d9d966b2bad68f8bcbe3ed8b2c83e98a0d [INFO] running `Command { std: "docker" "start" "-a" "067fa122dd14945688b301ce8c2cc0d9d966b2bad68f8bcbe3ed8b2c83e98a0d", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling discard v1.0.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s [INFO] running `Command { std: "docker" "inspect" "067fa122dd14945688b301ce8c2cc0d9d966b2bad68f8bcbe3ed8b2c83e98a0d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "067fa122dd14945688b301ce8c2cc0d9d966b2bad68f8bcbe3ed8b2c83e98a0d", kill_on_drop: false }` [INFO] [stdout] 067fa122dd14945688b301ce8c2cc0d9d966b2bad68f8bcbe3ed8b2c83e98a0d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b13a0361af0a48172cccd0b3d4ee500c90714ddd15088669a3b137340e0c420f [INFO] running `Command { std: "docker" "start" "-a" "b13a0361af0a48172cccd0b3d4ee500c90714ddd15088669a3b137340e0c420f", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling discard v1.0.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `DiscardOnDrop` that must be used [INFO] [stdout] --> src/lib.rs:261:9 [INFO] [stdout] | [INFO] [stdout] 261 | DiscardOnDrop::new(Foo::new()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: [INFO] [stdout] The DiscardOnDrop is unused, which causes it to be immediately discarded. [INFO] [stdout] You probably don't want that to happen. [INFO] [stdout] [INFO] [stdout] How to fix this: [INFO] [stdout] [INFO] [stdout] * Store the DiscardOnDrop in a variable or data structure. [INFO] [stdout] [INFO] [stdout] * Or use the DiscardOnDrop::leak function which will cause it to not be [INFO] [stdout] discarded (this *will* leak memory!). [INFO] [stdout] [INFO] [stdout] See the DiscardOnDrop documentation for more details. [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 261 | let _ = DiscardOnDrop::new(Foo::new()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `DiscardOnDrop` that must be used [INFO] [stdout] --> src/lib.rs:262:9 [INFO] [stdout] | [INFO] [stdout] 262 | DiscardOnDrop::new(Foo::new()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: [INFO] [stdout] The DiscardOnDrop is unused, which causes it to be immediately discarded. [INFO] [stdout] You probably don't want that to happen. [INFO] [stdout] [INFO] [stdout] How to fix this: [INFO] [stdout] [INFO] [stdout] * Store the DiscardOnDrop in a variable or data structure. [INFO] [stdout] [INFO] [stdout] * Or use the DiscardOnDrop::leak function which will cause it to not be [INFO] [stdout] discarded (this *will* leak memory!). [INFO] [stdout] [INFO] [stdout] See the DiscardOnDrop documentation for more details. [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 262 | let _ = DiscardOnDrop::new(Foo::new()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s [INFO] running `Command { std: "docker" "inspect" "b13a0361af0a48172cccd0b3d4ee500c90714ddd15088669a3b137340e0c420f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b13a0361af0a48172cccd0b3d4ee500c90714ddd15088669a3b137340e0c420f", kill_on_drop: false }` [INFO] [stdout] b13a0361af0a48172cccd0b3d4ee500c90714ddd15088669a3b137340e0c420f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] f9234a62d20ba9d0cdd290dbb0803c12f297b300b6ad8162db6c54259740534b [INFO] running `Command { std: "docker" "start" "-a" "f9234a62d20ba9d0cdd290dbb0803c12f297b300b6ad8162db6c54259740534b", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] warning: unused `DiscardOnDrop` that must be used [INFO] [stderr] --> src/lib.rs:261:9 [INFO] [stderr] | [INFO] [stderr] 261 | DiscardOnDrop::new(Foo::new()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: [INFO] [stderr] The DiscardOnDrop is unused, which causes it to be immediately discarded. [INFO] [stderr] You probably don't want that to happen. [INFO] [stderr] [INFO] [stderr] How to fix this: [INFO] [stderr] [INFO] [stderr] * Store the DiscardOnDrop in a variable or data structure. [INFO] [stderr] [INFO] [stderr] * Or use the DiscardOnDrop::leak function which will cause it to not be [INFO] [stderr] discarded (this *will* leak memory!). [INFO] [stderr] [INFO] [stderr] See the DiscardOnDrop documentation for more details. [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 261 | let _ = DiscardOnDrop::new(Foo::new()); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused `DiscardOnDrop` that must be used [INFO] [stderr] --> src/lib.rs:262:9 [INFO] [stderr] | [INFO] [stderr] 262 | DiscardOnDrop::new(Foo::new()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: [INFO] [stderr] The DiscardOnDrop is unused, which causes it to be immediately discarded. [INFO] [stderr] You probably don't want that to happen. [INFO] [stderr] [INFO] [stderr] How to fix this: [INFO] [stderr] [INFO] [stderr] * Store the DiscardOnDrop in a variable or data structure. [INFO] [stderr] [INFO] [stderr] * Or use the DiscardOnDrop::leak function which will cause it to not be [INFO] [stderr] discarded (this *will* leak memory!). [INFO] [stderr] [INFO] [stderr] See the DiscardOnDrop documentation for more details. [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 262 | let _ = DiscardOnDrop::new(Foo::new()); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `discard` (lib test) generated 2 warnings [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stdout] [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/discard-6ee812fe6e010903) [INFO] [stdout] running 7 tests [INFO] [stdout] test tests::discard ... ok [INFO] [stdout] test tests::no_discard ... ok [INFO] [stdout] test tests::unused ... ok [INFO] [stdout] test tests::unused_discard_on_drop ... ok [INFO] [stdout] test tests::discard_on_drop ... ok [INFO] [stdout] test tests::leak ... ok [INFO] [stdout] test tests::deref_mut ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stderr] Doc-tests discard [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test src/lib.rs - (line 15) ... ignored [INFO] [stdout] test src/lib.rs - (line 30) ... ignored [INFO] [stdout] test src/lib.rs - (line 61) ... ignored [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f9234a62d20ba9d0cdd290dbb0803c12f297b300b6ad8162db6c54259740534b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f9234a62d20ba9d0cdd290dbb0803c12f297b300b6ad8162db6c54259740534b", kill_on_drop: false }` [INFO] [stdout] f9234a62d20ba9d0cdd290dbb0803c12f297b300b6ad8162db6c54259740534b