[INFO] fetching crate iterators-collection 0.3.3... [INFO] testing iterators-collection-0.3.3 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1 [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 b83b707f97d809763b7861afa7638871f3339a33 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 15e54c17947f2570308c929fdb51ff31312c6fa69e1ce979cce046a8396ebf6e [INFO] running `Command { std: "docker" "start" "-a" "15e54c17947f2570308c929fdb51ff31312c6fa69e1ce979cce046a8396ebf6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "15e54c17947f2570308c929fdb51ff31312c6fa69e1ce979cce046a8396ebf6e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "15e54c17947f2570308c929fdb51ff31312c6fa69e1ce979cce046a8396ebf6e", kill_on_drop: false }` [INFO] [stdout] 15e54c17947f2570308c929fdb51ff31312c6fa69e1ce979cce046a8396ebf6e [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e1ef7d4f9279bad4e927d3af3385cdc8daa5b3ca771e6470eba0fa63a9f3c58d [INFO] running `Command { std: "docker" "start" "-a" "e1ef7d4f9279bad4e927d3af3385cdc8daa5b3ca771e6470eba0fa63a9f3c58d", 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 0.20s [INFO] running `Command { std: "docker" "inspect" "e1ef7d4f9279bad4e927d3af3385cdc8daa5b3ca771e6470eba0fa63a9f3c58d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e1ef7d4f9279bad4e927d3af3385cdc8daa5b3ca771e6470eba0fa63a9f3c58d", kill_on_drop: false }` [INFO] [stdout] e1ef7d4f9279bad4e927d3af3385cdc8daa5b3ca771e6470eba0fa63a9f3c58d [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0b1da61d4ef3cc8f935119739d023f555601aa08460809e7b6ef60817a8d7d20 [INFO] running `Command { std: "docker" "start" "-a" "0b1da61d4ef3cc8f935119739d023f555601aa08460809e7b6ef60817a8d7d20", 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 0.72s [INFO] running `Command { std: "docker" "inspect" "0b1da61d4ef3cc8f935119739d023f555601aa08460809e7b6ef60817a8d7d20", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0b1da61d4ef3cc8f935119739d023f555601aa08460809e7b6ef60817a8d7d20", kill_on_drop: false }` [INFO] [stdout] 0b1da61d4ef3cc8f935119739d023f555601aa08460809e7b6ef60817a8d7d20 [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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] e5bd0cff42d1268ebbd0a7b62ee7751a543e714fbb41cd22d3a5e19c5f3c5381 [INFO] running `Command { std: "docker" "start" "-a" "e5bd0cff42d1268ebbd0a7b62ee7751a543e714fbb41cd22d3a5e19c5f3c5381", 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 0.03s [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 filter::tests::exclude ... ok [INFO] [stdout] test share::tests::double_iterator_does_not_loop ... ok [INFO] [stdout] test share::tests::double_iterator_get_all_the_possible_values ... ok [INFO] [stdout] test filter::tests::exclude_construction ... ok [INFO] [stdout] test share::tests::double_iterator_never_get_the_same_value ... ok [INFO] [stdout] test share::tests::double_iterator_reset ... 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::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::double_iterator_set_panics_for_overflow - should panic ... ok [INFO] [stdout] test share::tests::double_iterator_set_panics_with_same_values - should panic ... ok [INFO] [stdout] test share::tests::single_line_iterator_new_panics_when_out_of_range - should panic ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s [INFO] [stdout] [INFO] [stderr] Doc-tests iterators_collection [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator (line 21) ... ok [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator (line 40) ... ok [INFO] [stdout] test src/share/mod.rs - share::SingleLineIterator<'a,T>::safe_for_each (line 230) ... ok [INFO] [stdout] test src/filter/mod.rs - filter::Exclude (line 6) ... ok [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator<'a,T>::safe_for_each (line 108) ... ok [INFO] [stdout] test src/share/mod.rs - share::DoubleIterator (line 8) ... 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" "e5bd0cff42d1268ebbd0a7b62ee7751a543e714fbb41cd22d3a5e19c5f3c5381", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e5bd0cff42d1268ebbd0a7b62ee7751a543e714fbb41cd22d3a5e19c5f3c5381", kill_on_drop: false }` [INFO] [stdout] e5bd0cff42d1268ebbd0a7b62ee7751a543e714fbb41cd22d3a5e19c5f3c5381