[INFO] fetching crate hindley-milner 0.1.0... [INFO] checking hindley-milner-0.1.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate hindley-milner 0.1.0 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate hindley-milner 0.1.0 on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate hindley-milner 0.1.0 [INFO] finished tweaking crates.io crate hindley-milner 0.1.0 [INFO] tweaked toml for crates.io crate hindley-milner 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 3 packages to latest compatible versions [INFO] [stderr] Adding lazy_static v0.2.11 (latest: v1.5.0) [INFO] [stderr] Adding maplit v0.1.6 (latest: v1.0.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 68233b4d5848e116168796d5b4faffef61b2a00e739c4dad31043ca232040c5f [INFO] running `Command { std: "docker" "start" "-a" "68233b4d5848e116168796d5b4faffef61b2a00e739c4dad31043ca232040c5f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "68233b4d5848e116168796d5b4faffef61b2a00e739c4dad31043ca232040c5f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "68233b4d5848e116168796d5b4faffef61b2a00e739c4dad31043ca232040c5f", kill_on_drop: false }` [INFO] [stdout] 68233b4d5848e116168796d5b4faffef61b2a00e739c4dad31043ca232040c5f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 887257c52eaaae33797d63f0c348b982f576071be0d482d538aab5ffa4754836 [INFO] running `Command { std: "docker" "start" "-a" "887257c52eaaae33797d63f0c348b982f576071be0d482d538aab5ffa4754836", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Checking maplit v0.1.6 [INFO] [stderr] Checking hindley-milner v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred [INFO] [stdout] --> src/lib.rs:206:1 [INFO] [stdout] | [INFO] [stdout] 206 | / lazy_static! { [INFO] [stdout] 207 | | // Basic integer [INFO] [stdout] 208 | | static ref INTEGER: Type = Type::new_operator(0, "int", &[]); [INFO] [stdout] 209 | | // Basic bool [INFO] [stdout] 210 | | static ref BOOL: Type = Type::new_operator(1, "bool", &[]); [INFO] [stdout] 211 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred [INFO] [stdout] --> src/lib.rs:206:1 [INFO] [stdout] | [INFO] [stdout] 206 | / lazy_static! { [INFO] [stdout] 207 | | // Basic integer [INFO] [stdout] 208 | | static ref INTEGER: Type = Type::new_operator(0, "int", &[]); [INFO] [stdout] 209 | | // Basic bool [INFO] [stdout] 210 | | static ref BOOL: Type = Type::new_operator(1, "bool", &[]); [INFO] [stdout] 211 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred [INFO] [stdout] --> src/lib.rs:206:1 [INFO] [stdout] | [INFO] [stdout] 206 | / lazy_static! { [INFO] [stdout] 207 | | // Basic integer [INFO] [stdout] 208 | | static ref INTEGER: Type = Type::new_operator(0, "int", &[]); [INFO] [stdout] 209 | | // Basic bool [INFO] [stdout] 210 | | static ref BOOL: Type = Type::new_operator(1, "bool", &[]); [INFO] [stdout] 211 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred [INFO] [stdout] --> src/lib.rs:206:1 [INFO] [stdout] | [INFO] [stdout] 206 | / lazy_static! { [INFO] [stdout] 207 | | // Basic integer [INFO] [stdout] 208 | | static ref INTEGER: Type = Type::new_operator(0, "int", &[]); [INFO] [stdout] 209 | | // Basic bool [INFO] [stdout] 210 | | static ref BOOL: Type = Type::new_operator(1, "bool", &[]); [INFO] [stdout] 211 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Namer` is never constructed [INFO] [stdout] --> src/lib.rs:77:8 [INFO] [stdout] | [INFO] [stdout] 77 | struct Namer { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `next` and `name` are never used [INFO] [stdout] --> src/lib.rs:83:8 [INFO] [stdout] | [INFO] [stdout] 82 | impl Namer { [INFO] [stdout] | ---------- methods in this implementation [INFO] [stdout] 83 | fn next(&mut self) -> String { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 89 | fn name(&mut self, t: ArenaType) -> String { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `id` and `as_string` are never used [INFO] [stdout] --> src/lib.rs:124:8 [INFO] [stdout] | [INFO] [stdout] 108 | impl Type { [INFO] [stdout] | --------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 124 | fn id(&self) -> usize { [INFO] [stdout] | ^^ [INFO] [stdout] ... [INFO] [stdout] 146 | fn as_string(&self, a: &Vec, namer: &mut Namer) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_env` is never used [INFO] [stdout] --> src/lib.rs:537:4 [INFO] [stdout] | [INFO] [stdout] 537 | fn test_env() -> (Vec, Env) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:504:15 [INFO] [stdout] | [INFO] [stdout] 501 | pub fn new_lambda(v: &str, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 504 | body: Box::new(body), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:510:15 [INFO] [stdout] | [INFO] [stdout] 508 | pub fn new_apply(func: Syntax, arg: Syntax) -> Syntax { [INFO] [stdout] | ------------ ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 509 | Syntax::Apply { [INFO] [stdout] 510 | func: Box::new(func), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:511:14 [INFO] [stdout] | [INFO] [stdout] 508 | pub fn new_apply(func: Syntax, arg: Syntax) -> Syntax { [INFO] [stdout] | ------------ ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 511 | arg: Box::new(arg), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:518:15 [INFO] [stdout] | [INFO] [stdout] 515 | pub fn new_let(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 518 | defn: Box::new(defn), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:519:15 [INFO] [stdout] | [INFO] [stdout] 515 | pub fn new_let(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 519 | body: Box::new(body), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:526:15 [INFO] [stdout] | [INFO] [stdout] 523 | pub fn new_letrec(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 526 | defn: Box::new(defn), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:527:15 [INFO] [stdout] | [INFO] [stdout] 523 | pub fn new_letrec(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 527 | body: Box::new(body), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 7 previous errors; 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `hindley-milner` (lib) due to 8 previous errors; 6 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:504:15 [INFO] [stdout] | [INFO] [stdout] 501 | pub fn new_lambda(v: &str, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 504 | body: Box::new(body), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:510:15 [INFO] [stdout] | [INFO] [stdout] 508 | pub fn new_apply(func: Syntax, arg: Syntax) -> Syntax { [INFO] [stdout] | ------------ ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 509 | Syntax::Apply { [INFO] [stdout] 510 | func: Box::new(func), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:511:14 [INFO] [stdout] | [INFO] [stdout] 508 | pub fn new_apply(func: Syntax, arg: Syntax) -> Syntax { [INFO] [stdout] | ------------ ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 511 | arg: Box::new(arg), [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:518:15 [INFO] [stdout] | [INFO] [stdout] 515 | pub fn new_let(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 518 | defn: Box::new(defn), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:519:15 [INFO] [stdout] | [INFO] [stdout] 515 | pub fn new_let(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 519 | body: Box::new(body), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:526:15 [INFO] [stdout] | [INFO] [stdout] 523 | pub fn new_letrec(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 526 | defn: Box::new(defn), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:527:15 [INFO] [stdout] | [INFO] [stdout] 523 | pub fn new_letrec(v: &str, defn: Syntax, body: Syntax) -> Syntax { [INFO] [stdout] | ------------ ------------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 527 | body: Box::new(body), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 7 previous errors; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `hindley-milner` (lib test) due to 8 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "887257c52eaaae33797d63f0c348b982f576071be0d482d538aab5ffa4754836", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "887257c52eaaae33797d63f0c348b982f576071be0d482d538aab5ffa4754836", kill_on_drop: false }` [INFO] [stdout] 887257c52eaaae33797d63f0c348b982f576071be0d482d538aab5ffa4754836