[INFO] fetching crate saturn-patch 1.0.0... [INFO] checking saturn-patch-1.0.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate saturn-patch 1.0.0 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate saturn-patch 1.0.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate saturn-patch 1.0.0 [INFO] finished tweaking crates.io crate saturn-patch 1.0.0 [INFO] tweaked toml for crates.io crate saturn-patch 1.0.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate crates.io crate saturn-patch 1.0.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 58be0e79a5732d399aaa8f4b4a4a530b3aa7df4a80bf02bf55ef3123e08f6fdf [INFO] running `Command { std: "docker" "start" "-a" "58be0e79a5732d399aaa8f4b4a4a530b3aa7df4a80bf02bf55ef3123e08f6fdf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "58be0e79a5732d399aaa8f4b4a4a530b3aa7df4a80bf02bf55ef3123e08f6fdf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58be0e79a5732d399aaa8f4b4a4a530b3aa7df4a80bf02bf55ef3123e08f6fdf", kill_on_drop: false }` [INFO] [stdout] 58be0e79a5732d399aaa8f4b4a4a530b3aa7df4a80bf02bf55ef3123e08f6fdf [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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4d98aade2a4a27536f8cfe7a909141bcf1e038f3514b8512e14ec6650da42a16 [INFO] running `Command { std: "docker" "start" "-a" "4d98aade2a4a27536f8cfe7a909141bcf1e038f3514b8512e14ec6650da42a16", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Compiling anyhow v1.0.38 [INFO] [stderr] Checking hmac-sha256 v0.1.6 [INFO] [stderr] Checking saturn-patch v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:236:17 [INFO] [stdout] | [INFO] [stdout] 236 | &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(&self.desired_mfr_bytes); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 236 | let _ = &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(&self.desired_mfr_bytes); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:240:17 [INFO] [stdout] | [INFO] [stdout] 240 | &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(&new_region); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 240 | let _ = &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(&new_region); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:248:21 [INFO] [stdout] | [INFO] [stdout] 248 | &bytes[string_offset..(string_offset + REGION_STRING_LEN)].copy_from_slice(new_region_string); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 248 | let _ = &bytes[string_offset..(string_offset + REGION_STRING_LEN)].copy_from_slice(new_region_string); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:361:13 [INFO] [stdout] | [INFO] [stdout] 361 | &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(manufacturer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 361 | let _ = &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(manufacturer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:362:13 [INFO] [stdout] | [INFO] [stdout] 362 | &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(regions); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 362 | let _ = &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(regions); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:363:13 [INFO] [stdout] | [INFO] [stdout] 363 | ... &bytes[first_region_string_index..(first_region_string_index + (region_count * REGION_STRING_LEN))].copy_from_slice(region_strings); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 363 | let _ = &bytes[first_region_string_index..(first_region_string_index + (region_count * REGION_STRING_LEN))].copy_from_slice(region_strings); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/cdrom.rs:374:21 [INFO] [stdout] | [INFO] [stdout] 374 | &buffer[0..src.len()].copy_from_slice(src); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 374 | let _ = &buffer[0..src.len()].copy_from_slice(src); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:236:17 [INFO] [stdout] | [INFO] [stdout] 236 | &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(&self.desired_mfr_bytes); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 236 | let _ = &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(&self.desired_mfr_bytes); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:240:17 [INFO] [stdout] | [INFO] [stdout] 240 | &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(&new_region); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 240 | let _ = &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(&new_region); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:248:21 [INFO] [stdout] | [INFO] [stdout] 248 | &bytes[string_offset..(string_offset + REGION_STRING_LEN)].copy_from_slice(new_region_string); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 248 | let _ = &bytes[string_offset..(string_offset + REGION_STRING_LEN)].copy_from_slice(new_region_string); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:361:13 [INFO] [stdout] | [INFO] [stdout] 361 | &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(manufacturer); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 361 | let _ = &bytes[(header_offset + 16)..(header_offset + 32)].copy_from_slice(manufacturer); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:362:13 [INFO] [stdout] | [INFO] [stdout] 362 | &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(regions); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 362 | let _ = &bytes[(header_offset + 64)..(header_offset + 80)].copy_from_slice(regions); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/lib.rs:363:13 [INFO] [stdout] | [INFO] [stdout] 363 | ... &bytes[first_region_string_index..(first_region_string_index + (region_count * REGION_STRING_LEN))].copy_from_slice(region_strings); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 363 | let _ = &bytes[first_region_string_index..(first_region_string_index + (region_count * REGION_STRING_LEN))].copy_from_slice(region_strings); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/cdrom.rs:374:21 [INFO] [stdout] | [INFO] [stdout] 374 | &buffer[0..src.len()].copy_from_slice(src); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 374 | let _ = &buffer[0..src.len()].copy_from_slice(src); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.06s [INFO] running `Command { std: "docker" "inspect" "4d98aade2a4a27536f8cfe7a909141bcf1e038f3514b8512e14ec6650da42a16", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d98aade2a4a27536f8cfe7a909141bcf1e038f3514b8512e14ec6650da42a16", kill_on_drop: false }` [INFO] [stdout] 4d98aade2a4a27536f8cfe7a909141bcf1e038f3514b8512e14ec6650da42a16