[INFO] fetching crate futures-signals 0.3.34... [INFO] checking futures-signals-0.3.34 against master#dc8fe1f81c6cf13c0987944c525b2aa81625b5d0 for pr-133502-4 [INFO] extracting crate futures-signals 0.3.34 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate futures-signals 0.3.34 on toolchain dc8fe1f81c6cf13c0987944c525b2aa81625b5d0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate futures-signals 0.3.34 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate futures-signals 0.3.34 [INFO] tweaked toml for crates.io crate futures-signals 0.3.34 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 96 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.4.0 (available: v0.5.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded discard v1.0.4 [INFO] [stderr] Downloaded gensym v0.1.1 [INFO] [stderr] Downloaded indoc v2.0.6 [INFO] [stderr] Downloaded criterion v0.4.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 51dc18b65958c8f37f104784a7887b092e485efca8e430ab9be46c8414cf81cc [INFO] running `Command { std: "docker" "start" "-a" "51dc18b65958c8f37f104784a7887b092e485efca8e430ab9be46c8414cf81cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "51dc18b65958c8f37f104784a7887b092e485efca8e430ab9be46c8414cf81cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "51dc18b65958c8f37f104784a7887b092e485efca8e430ab9be46c8414cf81cc", kill_on_drop: false }` [INFO] [stdout] 51dc18b65958c8f37f104784a7887b092e485efca8e430ab9be46c8414cf81cc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 706f2d9d98dae0b3d0687ae2b271a5f5c3ae89353c2f29473d0c87dd81c2c255 [INFO] running `Command { std: "docker" "start" "-a" "706f2d9d98dae0b3d0687ae2b271a5f5c3ae89353c2f29473d0c87dd81c2c255", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Checking os_str_bytes v6.6.1 [INFO] [stderr] Compiling getrandom v0.3.2 [INFO] [stderr] Checking half v2.6.0 [INFO] [stderr] Compiling libc v0.2.172 [INFO] [stderr] Checking plotters-backend v0.3.7 [INFO] [stderr] Checking hashbrown v0.12.3 [INFO] [stderr] Compiling syn v2.0.100 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking textwrap v0.16.2 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking futures-channel v0.3.31 [INFO] [stderr] Checking log v0.4.27 [INFO] [stderr] Checking discard v1.0.4 [INFO] [stderr] Checking oorandom v11.1.5 [INFO] [stderr] Compiling indoc v2.0.6 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Checking plotters-svg v0.3.7 [INFO] [stderr] Checking plotters v0.3.7 [INFO] [stderr] Checking ciborium-ll v0.2.2 [INFO] [stderr] Checking indexmap v1.9.3 [INFO] [stderr] Checking clap v3.2.25 [INFO] [stderr] Compiling uuid v1.16.0 [INFO] [stderr] Checking criterion-plot v0.5.0 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling futures-macro v0.3.31 [INFO] [stderr] Compiling pin-project-internal v1.1.10 [INFO] [stderr] Compiling gensym v0.1.1 [INFO] [stderr] Checking futures-util v0.3.31 [INFO] [stderr] Checking pin-project v1.1.10 [INFO] [stderr] Checking futures-executor v0.3.31 [INFO] [stderr] Checking serde_json v1.0.140 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking futures-signals v0.3.34 (/opt/rustwide/workdir) [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.4.0 [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:305:31 [INFO] [stdout] | [INFO] [stdout] 305 | is_eq(vec![], vec![], |v| drop(v.truncate(0)), vec![ [INFO] [stdout] | ^^^^^-------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:310:31 [INFO] [stdout] | [INFO] [stdout] 310 | is_eq(vec![], vec![], |v| drop(v.truncate(10)), vec![ [INFO] [stdout] | ^^^^^--------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:315:49 [INFO] [stdout] | [INFO] [stdout] 315 | is_eq(vec![5, 10, 15], vec![5, 10, 15], |v| drop(v.truncate(3)), vec![ [INFO] [stdout] | ^^^^^-------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:321:49 [INFO] [stdout] | [INFO] [stdout] 321 | is_eq(vec![5, 10, 15], vec![5, 10, 15], |v| drop(v.truncate(10)), vec![ [INFO] [stdout] | ^^^^^--------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:327:45 [INFO] [stdout] | [INFO] [stdout] 327 | is_eq(vec![5, 10, 15], vec![5, 10], |v| drop(v.truncate(2)), vec![ [INFO] [stdout] | ^^^^^-------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:334:41 [INFO] [stdout] | [INFO] [stdout] 334 | is_eq(vec![5, 10, 15], vec![5], |v| drop(v.truncate(1)), vec![ [INFO] [stdout] | ^^^^^-------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:342:40 [INFO] [stdout] | [INFO] [stdout] 342 | is_eq(vec![5, 10, 15], vec![], |v| drop(v.truncate(0)), vec![ [INFO] [stdout] | ^^^^^-------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:353:31 [INFO] [stdout] | [INFO] [stdout] 353 | is_eq(vec![], vec![], |v| drop(v.extend(0..0)), vec![ [INFO] [stdout] | ^^^^^--------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:358:38 [INFO] [stdout] | [INFO] [stdout] 358 | is_eq(vec![], vec![0, 1, 2], |v| drop(v.extend(0..3)), vec![ [INFO] [stdout] | ^^^^^--------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:366:54 [INFO] [stdout] | [INFO] [stdout] 366 | is_eq(vec![0, 1, 2], vec![0, 1, 2, 3, 4, 5], |v| drop(v.extend(3..6)), vec![ [INFO] [stdout] | ^^^^^--------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> tests/mutable_vec.rs:375:45 [INFO] [stdout] | [INFO] [stdout] 375 | is_eq(vec![0, 1, 2], vec![0, 1, 2], |v| drop(v.extend(0..0)), vec![ [INFO] [stdout] | ^^^^^--------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `()` [INFO] [stdout] | [INFO] [stdout] = note: use `let _ = ...` to ignore the expression or result [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.39s [INFO] running `Command { std: "docker" "inspect" "706f2d9d98dae0b3d0687ae2b271a5f5c3ae89353c2f29473d0c87dd81c2c255", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "706f2d9d98dae0b3d0687ae2b271a5f5c3ae89353c2f29473d0c87dd81c2c255", kill_on_drop: false }` [INFO] [stdout] 706f2d9d98dae0b3d0687ae2b271a5f5c3ae89353c2f29473d0c87dd81c2c255