[INFO] fetching crate rust-reduce 0.1.0... [INFO] checking rust-reduce-0.1.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050 [INFO] extracting crate rust-reduce 0.1.0 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate rust-reduce 0.1.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rust-reduce 0.1.0 [INFO] finished tweaking crates.io crate rust-reduce 0.1.0 [INFO] tweaked toml for crates.io crate rust-reduce 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2325fc10aa0b5c919f9edee2e225818c4360ead41e2570f6f28a6344f8b46277 [INFO] running `Command { std: "docker" "start" "-a" "2325fc10aa0b5c919f9edee2e225818c4360ead41e2570f6f28a6344f8b46277", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2325fc10aa0b5c919f9edee2e225818c4360ead41e2570f6f28a6344f8b46277", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2325fc10aa0b5c919f9edee2e225818c4360ead41e2570f6f28a6344f8b46277", kill_on_drop: false }` [INFO] [stdout] 2325fc10aa0b5c919f9edee2e225818c4360ead41e2570f6f28a6344f8b46277 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 59db268f9ebd236ba2065d2a82b9297b6871f41bd46b31336cb581b63488d3cc [INFO] running `Command { std: "docker" "start" "-a" "59db268f9ebd236ba2065d2a82b9297b6871f41bd46b31336cb581b63488d3cc", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking tempfile v3.2.0 [INFO] [stderr] Checking quote v0.6.13 [INFO] [stderr] Checking syn v0.15.44 [INFO] [stderr] Checking syn-inline-mod v0.2.0 [INFO] [stderr] Checking rust-reduce v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:25:43 [INFO] [stdout] | [INFO] [stdout] 25 | constructor: fn(PathBuf, bool) -> Box, [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:26:23 [INFO] [stdout] | [INFO] [stdout] 26 | inner: Option>, [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:49:53 [INFO] [stdout] | [INFO] [stdout] 49 | fn new(path: PathBuf, need_backup: bool) -> Box where Self: Sized; [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:59:53 [INFO] [stdout] | [INFO] [stdout] 59 | fn new(file: PathBuf, need_backup: bool) -> Box { [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:94:53 [INFO] [stdout] | [INFO] [stdout] 94 | fn new(file: PathBuf, need_backup: bool) -> Box { [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:160:56 [INFO] [stdout] | [INFO] [stdout] 160 | Box::new(std::io::stdout()) as Box [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Write` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:25:43 [INFO] [stdout] | [INFO] [stdout] 25 | constructor: fn(PathBuf, bool) -> Box, [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:26:23 [INFO] [stdout] | [INFO] [stdout] 26 | inner: Option>, [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:49:53 [INFO] [stdout] | [INFO] [stdout] 49 | fn new(path: PathBuf, need_backup: bool) -> Box where Self: Sized; [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:59:53 [INFO] [stdout] | [INFO] [stdout] 59 | fn new(file: PathBuf, need_backup: bool) -> Box { [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:94:53 [INFO] [stdout] | [INFO] [stdout] 94 | fn new(file: PathBuf, need_backup: bool) -> Box { [INFO] [stdout] | ^^^^^^^^^^ help: use `dyn`: `dyn OutputType` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/output.rs:160:56 [INFO] [stdout] | [INFO] [stdout] 160 | Box::new(std::io::stdout()) as Box [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Write` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/transforms/clear_blocks.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | mem::replace(i, backup); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/transforms/clear_blocks.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | mem::replace(i, backup); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.47s [INFO] running `Command { std: "docker" "inspect" "59db268f9ebd236ba2065d2a82b9297b6871f41bd46b31336cb581b63488d3cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "59db268f9ebd236ba2065d2a82b9297b6871f41bd46b31336cb581b63488d3cc", kill_on_drop: false }` [INFO] [stdout] 59db268f9ebd236ba2065d2a82b9297b6871f41bd46b31336cb581b63488d3cc