[INFO] fetching crate iterators-collection 0.3.3... [INFO] testing iterators-collection-0.3.3 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1 [INFO] extracting crate iterators-collection 0.3.3 into /workspace/builds/worker-0-tc2/source [INFO] started tweaking crates.io crate iterators-collection 0.3.3 [INFO] finished tweaking crates.io crate iterators-collection 0.3.3 [INFO] tweaked toml for crates.io crate iterators-collection 0.3.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate iterators-collection 0.3.3 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fce437955286e189f55f9ac9351f3e038b55ed2acb25743eb1f1a29faa402ad8 [INFO] running `Command { std: "docker" "start" "-a" "fce437955286e189f55f9ac9351f3e038b55ed2acb25743eb1f1a29faa402ad8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fce437955286e189f55f9ac9351f3e038b55ed2acb25743eb1f1a29faa402ad8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fce437955286e189f55f9ac9351f3e038b55ed2acb25743eb1f1a29faa402ad8", kill_on_drop: false }` [INFO] [stdout] fce437955286e189f55f9ac9351f3e038b55ed2acb25743eb1f1a29faa402ad8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1878be1a95ceaa9bccfebdea7695e4c87e4bb6eef48472d706bb4779561cb37e [INFO] running `Command { std: "docker" "start" "-a" "1878be1a95ceaa9bccfebdea7695e4c87e4bb6eef48472d706bb4779561cb37e", kill_on_drop: false }` [INFO] [stderr] Compiling iterators-collection v0.3.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/share/mod.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `Result<(), ()>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s [INFO] running `Command { std: "docker" "inspect" "1878be1a95ceaa9bccfebdea7695e4c87e4bb6eef48472d706bb4779561cb37e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1878be1a95ceaa9bccfebdea7695e4c87e4bb6eef48472d706bb4779561cb37e", kill_on_drop: false }` [INFO] [stdout] 1878be1a95ceaa9bccfebdea7695e4c87e4bb6eef48472d706bb4779561cb37e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f0a42ebb2da3584cb38828bd9dfcebc0798028bae56dab6a1aa713d35dbcd291 [INFO] running `Command { std: "docker" "start" "-a" "f0a42ebb2da3584cb38828bd9dfcebc0798028bae56dab6a1aa713d35dbcd291", kill_on_drop: false }` [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/share/mod.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `Result<(), ()>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling iterators-collection v0.3.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/share/mod.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `Result<(), ()>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s [INFO] running `Command { std: "docker" "inspect" "f0a42ebb2da3584cb38828bd9dfcebc0798028bae56dab6a1aa713d35dbcd291", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0a42ebb2da3584cb38828bd9dfcebc0798028bae56dab6a1aa713d35dbcd291", kill_on_drop: false }` [INFO] [stdout] f0a42ebb2da3584cb38828bd9dfcebc0798028bae56dab6a1aa713d35dbcd291 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 202a19e38f4af59410fbc16f91bea76af216b8dc6277cbf06e857064689eb5fb [INFO] running `Command { std: "docker" "start" "-a" "202a19e38f4af59410fbc16f91bea76af216b8dc6277cbf06e857064689eb5fb", kill_on_drop: false }` [INFO] [stderr] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stderr] --> src/share/mod.rs:166:9 [INFO] [stderr] | [INFO] [stderr] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stderr] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `Result<(), ()>` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the expression or result [INFO] [stderr] | [INFO] [stderr] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stderr] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `iterators-collection` (lib) generated 1 warning [INFO] [stderr] warning: `iterators-collection` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/iterators_collection-eb955ee237cee95f) [INFO] [stdout] [INFO] [stdout] running 14 tests [INFO] [stdout] test share::tests::double_iterator_get_all_the_possible_values ... ok [INFO] [stdout] test filter::tests::exclude ... ok [INFO] [stdout] test share::tests::double_iterator_never_get_the_same_value ... ok [INFO] [stdout] test share::tests::double_iterator_does_not_loop ... ok [INFO] [stdout] test share::tests::double_iterator_safe_for_each ... ok [INFO] [stdout] test share::tests::double_iterator_set ... ok [INFO] [stdout] test share::tests::double_iterator_reset ... ok [INFO] [stdout] test share::tests::single_line_iterator_from_double_iterator_works ... ok [INFO] [stdout] test share::tests::single_line_iterator_iterates_well ... ok [INFO] [stdout] test share::tests::single_line_iterator_safe_for_each ... ok [INFO] [stdout] test share::tests::single_line_iterator_new_panics_when_out_of_range - should panic ... ok [INFO] [stdout] test share::tests::double_iterator_set_panics_with_same_values - should panic ... ok [INFO] [stdout] test share::tests::double_iterator_set_panics_for_overflow - should panic ... ok [INFO] [stdout] test filter::tests::exclude_construction ... ok [INFO] [stderr] Doc-tests iterators_collection [INFO] [stdout] [INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator (line 8) ... ok [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator (line 21) ... ok [INFO] [stdout] test src/share/mod.rs - share::SingleLineIterator<'a,T>::safe_for_each (line 230) ... ok [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator (line 40) ... ok [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator<'a,T>::safe_for_each (line 108) ... ok [INFO] [stdout] test src/filter/mod.rs - filter::Exclude (line 6) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.68s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "202a19e38f4af59410fbc16f91bea76af216b8dc6277cbf06e857064689eb5fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "202a19e38f4af59410fbc16f91bea76af216b8dc6277cbf06e857064689eb5fb", kill_on_drop: false }` [INFO] [stdout] 202a19e38f4af59410fbc16f91bea76af216b8dc6277cbf06e857064689eb5fb