[INFO] cloning repository https://github.com/meddle0x53/arith-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meddle0x53/arith-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeddle0x53%2Farith-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeddle0x53%2Farith-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf51b0fcd0338bb01e9aa4ccad4db648e8dd2017
[INFO] building meddle0x53/arith-rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeddle0x53%2Farith-rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/meddle0x53/arith-rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/meddle0x53/arith-rust
[INFO] finished tweaking git repo https://github.com/meddle0x53/arith-rust
[INFO] tweaked toml for git repo https://github.com/meddle0x53/arith-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/meddle0x53/arith-rust 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7dbe7204190acecedd21e3c22ccfeefa69304e9c46063d57525dbfc0b7421f2
[INFO] running `Command { std: "docker" "start" "-a" "a7dbe7204190acecedd21e3c22ccfeefa69304e9c46063d57525dbfc0b7421f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7dbe7204190acecedd21e3c22ccfeefa69304e9c46063d57525dbfc0b7421f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7dbe7204190acecedd21e3c22ccfeefa69304e9c46063d57525dbfc0b7421f2", kill_on_drop: false }`
[INFO] [stdout] a7dbe7204190acecedd21e3c22ccfeefa69304e9c46063d57525dbfc0b7421f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 579b4c140a98fbf7b7cbb8c5d595a9d4db00f4c4400eacb9ef90fc562f1814df
[INFO] running `Command { std: "docker" "start" "-a" "579b4c140a98fbf7b7cbb8c5d595a9d4db00f4c4400eacb9ef90fc562f1814df", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling arith v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:80:37
[INFO] [stdout]    |
[INFO] [stdout] 80 |         &Token::IsZero => Ok(IsZero(box parse_inner(tokens)?)),
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 80 |         &Token::IsZero => Ok(IsZero(Box::new(parse_inner(tokens)?))),
[INFO] [stdout]    |                                     ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:81:35
[INFO] [stdout]    |
[INFO] [stdout] 81 |         &Token::Succ   => Ok(Succ(box parse_inner(tokens)?)),
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 81 |         &Token::Succ   => Ok(Succ(Box::new(parse_inner(tokens)?))),
[INFO] [stdout]    |                                   ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:82:35
[INFO] [stdout]    |
[INFO] [stdout] 82 |         &Token::Pred   => Ok(Pred(box parse_inner(tokens)?)),
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 82 |         &Token::Pred   => Ok(Pred(Box::new(parse_inner(tokens)?))),
[INFO] [stdout]    |                                   ~~~~~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:91:27
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     Ok(If(box condition, box true_case, box false_case))
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     Ok(If(Box::new(condition), box true_case, box false_case))
[INFO] [stdout]    |                           ~~~~~~~~~         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:91:42
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     Ok(If(box condition, box true_case, box false_case))
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     Ok(If(box condition, Box::new(true_case), box false_case))
[INFO] [stdout]    |                                          ~~~~~~~~~         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:91:57
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     Ok(If(box condition, box true_case, box false_case))
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     Ok(If(box condition, box true_case, Box::new(false_case)))
[INFO] [stdout]    |                                                         ~~~~~~~~~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:170:26
[INFO] [stdout]     |
[INFO] [stdout] 170 |     let one = Term::Succ(box Term::Zero);
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 170 |     let one = Term::Succ(Box::new(Term::Zero));
[INFO] [stdout]     |                          ~~~~~~~~~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:181:26
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let one = Term::Succ(box Term::Zero);
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let one = Term::Succ(Box::new(Term::Zero));
[INFO] [stdout]     |                          ~~~~~~~~~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:182:29
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let inner_if = Term::If(box Term::True, box Term::False, box Term::True);
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let inner_if = Term::If(Box::new(Term::True), box Term::False, box Term::True);
[INFO] [stdout]     |                             ~~~~~~~~~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:182:45
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let inner_if = Term::If(box Term::True, box Term::False, box Term::True);
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let inner_if = Term::If(box Term::True, Box::new(Term::False), box Term::True);
[INFO] [stdout]     |                                             ~~~~~~~~~           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:182:62
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let inner_if = Term::If(box Term::True, box Term::False, box Term::True);
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let inner_if = Term::If(box Term::True, box Term::False, Box::new(Term::True));
[INFO] [stdout]     |                                                              ~~~~~~~~~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:193:26
[INFO] [stdout]     |
[INFO] [stdout] 193 |     let one = Term::Succ(box Term::Zero);
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 193 |     let one = Term::Succ(Box::new(Term::Zero));
[INFO] [stdout]     |                          ~~~~~~~~~          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:194:26
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let two = Term::Succ(box one.clone());
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let two = Term::Succ(Box::new(one.clone()));
[INFO] [stdout]     |                          ~~~~~~~~~           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:195:28
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let three = Term::Succ(box two);
[INFO] [stdout]     |                            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let three = Term::Succ(Box::new(two));
[INFO] [stdout]     |                            ~~~~~~~~~   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:196:27
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let four = Term::Succ(box three);
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let four = Term::Succ(Box::new(three));
[INFO] [stdout]     |                           ~~~~~~~~~     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/interpretator.rs:197:27
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let five = Term::Succ(box four);
[INFO] [stdout]     |                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let five = Term::Succ(Box::new(four));
[INFO] [stdout]     |                           ~~~~~~~~~    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 |             'a'...'z' | 'A'...'Z' => {
[INFO] [stdout]    |                            ^^^ help: use `..=` for an inclusive range
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:45:28
[INFO] [stdout]    |
[INFO] [stdout] 45 |                         'a'...'z' | 'A'...'Z' | '_' => word.push(d),
[INFO] [stdout]    |                            ^^^ help: use `..=` for an inclusive range
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lexer.rs:45:40
[INFO] [stdout]    |
[INFO] [stdout] 45 |                         'a'...'z' | 'A'...'Z' | '_' => word.push(d),
[INFO] [stdout]    |                                        ^^^ help: use `..=` for an inclusive range
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:13:23
[INFO] [stdout]    |
[INFO] [stdout] 13 |     repl::start("> ", (|s| interpretator::run(&s)))
[INFO] [stdout]    |                       ^                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 13 -     repl::start("> ", (|s| interpretator::run(&s)))
[INFO] [stdout] 13 +     repl::start("> ", |s| interpretator::run(&s))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]  --> src/repl.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate libc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]  --> src/repl.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn readline(prompt: *const libc::c_char) -> *const libc::c_char;
[INFO] [stdout]   |                                ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]  --> src/repl.rs:8:56
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn readline(prompt: *const libc::c_char) -> *const libc::c_char;
[INFO] [stdout]   |                                                        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]  --> src/repl.rs:9:34
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn add_history(entry: *const libc::c_char);
[INFO] [stdout]   |                                  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2024-12-19; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arith` (bin "arith") due to 21 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "579b4c140a98fbf7b7cbb8c5d595a9d4db00f4c4400eacb9ef90fc562f1814df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "579b4c140a98fbf7b7cbb8c5d595a9d4db00f4c4400eacb9ef90fc562f1814df", kill_on_drop: false }`
[INFO] [stdout] 579b4c140a98fbf7b7cbb8c5d595a9d4db00f4c4400eacb9ef90fc562f1814df