[INFO] fetching crate discard 1.0.4... [INFO] testing discard-1.0.4 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate discard 1.0.4 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate discard 1.0.4 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-8/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 95857bba734424f4fdd1da96fb26ddf7c65d1300091f583745e4126d06eacf80 [INFO] running `Command { std: "docker" "start" "-a" "95857bba734424f4fdd1da96fb26ddf7c65d1300091f583745e4126d06eacf80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "95857bba734424f4fdd1da96fb26ddf7c65d1300091f583745e4126d06eacf80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "95857bba734424f4fdd1da96fb26ddf7c65d1300091f583745e4126d06eacf80", kill_on_drop: false }` [INFO] [stdout] 95857bba734424f4fdd1da96fb26ddf7c65d1300091f583745e4126d06eacf80 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4fe7d231aea3b028fb26b62d7f3addd060b5ceaf89c7f4506fac331fe74f57d9 [INFO] running `Command { std: "docker" "start" "-a" "4fe7d231aea3b028fb26b62d7f3addd060b5ceaf89c7f4506fac331fe74f57d9", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling discard v1.0.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.58s [INFO] running `Command { std: "docker" "inspect" "4fe7d231aea3b028fb26b62d7f3addd060b5ceaf89c7f4506fac331fe74f57d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4fe7d231aea3b028fb26b62d7f3addd060b5ceaf89c7f4506fac331fe74f57d9", kill_on_drop: false }` [INFO] [stdout] 4fe7d231aea3b028fb26b62d7f3addd060b5ceaf89c7f4506fac331fe74f57d9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 250e1d20ad07a53e6aea8c856bb23fc0b1ecee6dd965730c8f4db8667dfd78a1 [INFO] running `Command { std: "docker" "start" "-a" "250e1d20ad07a53e6aea8c856bb23fc0b1ecee6dd965730c8f4db8667dfd78a1", kill_on_drop: false }` [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: `#[warn(unused_must_use)]` on by default [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] [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] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.36s [INFO] [stderr] Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/discard-d3e0b32786ac179b) [INFO] running `Command { std: "docker" "inspect" "250e1d20ad07a53e6aea8c856bb23fc0b1ecee6dd965730c8f4db8667dfd78a1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "250e1d20ad07a53e6aea8c856bb23fc0b1ecee6dd965730c8f4db8667dfd78a1", kill_on_drop: false }` [INFO] [stdout] 250e1d20ad07a53e6aea8c856bb23fc0b1ecee6dd965730c8f4db8667dfd78a1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 3be6e50996362ae76187d9188a17e2e46666b83855da11e839e2942977b5b945 [INFO] running `Command { std: "docker" "start" "-a" "3be6e50996362ae76187d9188a17e2e46666b83855da11e839e2942977b5b945", kill_on_drop: false }` [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: `#[warn(unused_must_use)]` on by default [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] [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] [INFO] [stderr] warning: `discard` (lib test) generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.00s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/discard-d3e0b32786ac179b) [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test tests::deref_mut ... ok [INFO] [stdout] test tests::discard ... ok [INFO] [stdout] test tests::discard_on_drop ... ok [INFO] [stdout] test tests::leak ... 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] [INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [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" "3be6e50996362ae76187d9188a17e2e46666b83855da11e839e2942977b5b945", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3be6e50996362ae76187d9188a17e2e46666b83855da11e839e2942977b5b945", kill_on_drop: false }` [INFO] [stdout] 3be6e50996362ae76187d9188a17e2e46666b83855da11e839e2942977b5b945