[INFO] fetching crate ubend 0.2.2... [INFO] checking ubend-0.2.2 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] extracting crate ubend 0.2.2 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate ubend 0.2.2 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ubend 0.2.2 [INFO] finished tweaking crates.io crate ubend 0.2.2 [INFO] tweaked toml for crates.io crate ubend 0.2.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 2 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6a08b6e9398d53858af59d05efe3f67803862e1e271873e9932760134ee1e86f [INFO] running `Command { std: "docker" "start" "-a" "6a08b6e9398d53858af59d05efe3f67803862e1e271873e9932760134ee1e86f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6a08b6e9398d53858af59d05efe3f67803862e1e271873e9932760134ee1e86f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a08b6e9398d53858af59d05efe3f67803862e1e271873e9932760134ee1e86f", kill_on_drop: false }` [INFO] [stdout] 6a08b6e9398d53858af59d05efe3f67803862e1e271873e9932760134ee1e86f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ff5c64bf0d67768052d82746ae572a29e2d8e28d6f95b42a9b650a536bbe777e [INFO] running `Command { std: "docker" "start" "-a" "ff5c64bf0d67768052d82746ae572a29e2d8e28d6f95b42a9b650a536bbe777e", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Checking ubend v0.2.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:173:2 [INFO] [stdout] | [INFO] [stdout] 173 | &mut environ [INFO] [stdout] | ^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see issue #114447 [INFO] [stdout] = note: this will be a hard error in the 2024 edition [INFO] [stdout] = note: this mutable reference has lifetime `'static`, but if the static gets accessed (read or written) by any other means, or any other reference is created, then any further use of this mutable reference is Undefined Behavior [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] help: use `addr_of_mut!` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 173 | addr_of_mut!(environ) [INFO] [stdout] | ~~~~~~~~~~~~~ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged [INFO] [stdout] --> src/lib.rs:173:2 [INFO] [stdout] | [INFO] [stdout] 173 | &mut environ [INFO] [stdout] | ^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see issue #114447 [INFO] [stdout] = note: this will be a hard error in the 2024 edition [INFO] [stdout] = note: this mutable reference has lifetime `'static`, but if the static gets accessed (read or written) by any other means, or any other reference is created, then any further use of this mutable reference is Undefined Behavior [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] help: use `addr_of_mut!` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 173 | addr_of_mut!(environ) [INFO] [stdout] | ~~~~~~~~~~~~~ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:535:13 [INFO] [stdout] | [INFO] [stdout] 535 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 535 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:535:13 [INFO] [stdout] | [INFO] [stdout] 535 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 535 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:541:13 [INFO] [stdout] | [INFO] [stdout] 541 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 541 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:547:13 [INFO] [stdout] | [INFO] [stdout] 547 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 547 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:541:13 [INFO] [stdout] | [INFO] [stdout] 541 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 541 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:553:13 [INFO] [stdout] | [INFO] [stdout] 553 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 553 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:547:13 [INFO] [stdout] | [INFO] [stdout] 547 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 547 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib.rs:553:13 [INFO] [stdout] | [INFO] [stdout] 553 | (self as &Display).fmt(f) [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 553 | (self as &dyn Display).fmt(f) [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1016:6 [INFO] [stdout] | [INFO] [stdout] 1016 | if unsafe { WIFEXITED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1017:14 [INFO] [stdout] | [INFO] [stdout] 1017 | return Ok(unsafe { WEXITSTATUS(status) }); [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1020:6 [INFO] [stdout] | [INFO] [stdout] 1020 | if unsafe { WIFSIGNALED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1021:40 [INFO] [stdout] | [INFO] [stdout] 1021 | return Err(WaitError::ChildSignaled(unsafe { WTERMSIG(status) })); [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1024:6 [INFO] [stdout] | [INFO] [stdout] 1024 | if unsafe { WCOREDUMP(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1028:6 [INFO] [stdout] | [INFO] [stdout] 1028 | if unsafe { WIFSTOPPED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1029:39 [INFO] [stdout] | [INFO] [stdout] 1029 | return Err(WaitError::ChildStopped(unsafe { WSTOPSIG(status) })); [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1032:6 [INFO] [stdout] | [INFO] [stdout] 1032 | if unsafe { WIFCONTINUED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1016:6 [INFO] [stdout] | [INFO] [stdout] 1016 | if unsafe { WIFEXITED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1017:14 [INFO] [stdout] | [INFO] [stdout] 1017 | return Ok(unsafe { WEXITSTATUS(status) }); [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1020:6 [INFO] [stdout] | [INFO] [stdout] 1020 | if unsafe { WIFSIGNALED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1021:40 [INFO] [stdout] | [INFO] [stdout] 1021 | return Err(WaitError::ChildSignaled(unsafe { WTERMSIG(status) })); [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1024:6 [INFO] [stdout] | [INFO] [stdout] 1024 | if unsafe { WCOREDUMP(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1028:6 [INFO] [stdout] | [INFO] [stdout] 1028 | if unsafe { WIFSTOPPED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1029:39 [INFO] [stdout] | [INFO] [stdout] 1029 | return Err(WaitError::ChildStopped(unsafe { WSTOPSIG(status) })); [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:1032:6 [INFO] [stdout] | [INFO] [stdout] 1032 | if unsafe { WIFCONTINUED(status) } { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:1703:10 [INFO] [stdout] | [INFO] [stdout] 1703 | for mut child in &mut children { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:1703:10 [INFO] [stdout] | [INFO] [stdout] 1703 | for mut child in &mut children { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> tests/main.rs:180:3 [INFO] [stdout] | [INFO] [stdout] 180 | write!(stream, "hello world"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> tests/main.rs:211:3 [INFO] [stdout] | [INFO] [stdout] 211 | write!(stream, "spam\neggs\nspam spam\n"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s [INFO] running `Command { std: "docker" "inspect" "ff5c64bf0d67768052d82746ae572a29e2d8e28d6f95b42a9b650a536bbe777e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ff5c64bf0d67768052d82746ae572a29e2d8e28d6f95b42a9b650a536bbe777e", kill_on_drop: false }` [INFO] [stdout] ff5c64bf0d67768052d82746ae572a29e2d8e28d6f95b42a9b650a536bbe777e