[INFO] fetching crate bart_derive 0.1.4...
[INFO] building bart_derive-0.1.4 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate bart_derive 0.1.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate bart_derive 0.1.4 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bart_derive 0.1.4
[INFO] finished tweaking crates.io crate bart_derive 0.1.4
[INFO] tweaked toml for crates.io crate bart_derive 0.1.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0989066f2de029b5023465e00a88b3c9e429d16118a8ff4fea9b073584625ff1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0989066f2de029b5023465e00a88b3c9e429d16118a8ff4fea9b073584625ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0989066f2de029b5023465e00a88b3c9e429d16118a8ff4fea9b073584625ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0989066f2de029b5023465e00a88b3c9e429d16118a8ff4fea9b073584625ff1", kill_on_drop: false }`
[INFO] [stdout] 0989066f2de029b5023465e00a88b3c9e429d16118a8ff4fea9b073584625ff1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57171a70159e3392b4729b4889245cd76abfe0df308361efc6959da436d05715
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "57171a70159e3392b4729b4889245cd76abfe0df308361efc6959da436d05715", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling bart_derive v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generator.rs:35:86
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn scope(name: token::Name, scope_level: u32, ast: ast::Ast, partials_resolver: &mut PartialsResolver)
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generator.rs:45:75
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn generate(node: ast::Ast, scope_level: u32, partials_resolver: &mut PartialsResolver) -> quote::Tokens {
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/scanner.rs:90:37
[INFO] [stdout]    |
[INFO] [stdout] 90 |     enum Head { Positive, Negative };
[INFO] [stdout]    |                                     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/scanner.rs:91:43
[INFO] [stdout]    |
[INFO] [stdout] 91 |     enum Tail { Conditional, Scope, None };
[INFO] [stdout]    |                                           ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:91:56
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let (template, mut partials_resolver): (_, Box<generator::PartialsResolver>) =
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn generator::PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]   --> src/scanner.rs:49:39
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let input = input[leading_dots..].trim_left();
[INFO] [stdout]    |                                       ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]   --> src/scanner.rs:52:49
[INFO] [stdout]    |
[INFO] [stdout] 52 |         true => (true, input[..input.len() - 2].trim_right()),
[INFO] [stdout]    |                                                 ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/generator.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     panic!(format!("Too many leading dots ({}) in scope depth of only {}", x, scope_depth));
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     panic!("Too many leading dots ({}) in scope depth of only {}", x, scope_depth);
[INFO] [stdout]    |                           --                                                                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `Command { std: "docker" "inspect" "57171a70159e3392b4729b4889245cd76abfe0df308361efc6959da436d05715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57171a70159e3392b4729b4889245cd76abfe0df308361efc6959da436d05715", kill_on_drop: false }`
[INFO] [stdout] 57171a70159e3392b4729b4889245cd76abfe0df308361efc6959da436d05715
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 257bb2c9bdc9d2e4c79c4021e1790f8aa3344f0c8fb1fa50e75b0c610cdcd9c6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "257bb2c9bdc9d2e4c79c4021e1790f8aa3344f0c8fb1fa50e75b0c610cdcd9c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling bart_derive v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generator.rs:35:86
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn scope(name: token::Name, scope_level: u32, ast: ast::Ast, partials_resolver: &mut PartialsResolver)
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generator.rs:45:75
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn generate(node: ast::Ast, scope_level: u32, partials_resolver: &mut PartialsResolver) -> quote::Tokens {
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/scanner.rs:90:37
[INFO] [stdout]    |
[INFO] [stdout] 90 |     enum Head { Positive, Negative };
[INFO] [stdout]    |                                     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/scanner.rs:91:43
[INFO] [stdout]    |
[INFO] [stdout] 91 |     enum Tail { Conditional, Scope, None };
[INFO] [stdout]    |                                           ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:91:56
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let (template, mut partials_resolver): (_, Box<generator::PartialsResolver>) =
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn generator::PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]   --> src/scanner.rs:49:39
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let input = input[leading_dots..].trim_left();
[INFO] [stdout]    |                                       ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]   --> src/scanner.rs:52:49
[INFO] [stdout]    |
[INFO] [stdout] 52 |         true => (true, input[..input.len() - 2].trim_right()),
[INFO] [stdout]    |                                                 ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/generator.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     panic!(format!("Too many leading dots ({}) in scope depth of only {}", x, scope_depth));
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     panic!("Too many leading dots ({}) in scope depth of only {}", x, scope_depth);
[INFO] [stdout]    |                           --                                                                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generator.rs:35:86
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn scope(name: token::Name, scope_level: u32, ast: ast::Ast, partials_resolver: &mut PartialsResolver)
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generator.rs:45:75
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn generate(node: ast::Ast, scope_level: u32, partials_resolver: &mut PartialsResolver) -> quote::Tokens {
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/scanner.rs:90:37
[INFO] [stdout]    |
[INFO] [stdout] 90 |     enum Head { Positive, Negative };
[INFO] [stdout]    |                                     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/scanner.rs:91:43
[INFO] [stdout]    |
[INFO] [stdout] 91 |     enum Tail { Conditional, Scope, None };
[INFO] [stdout]    |                                           ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:91:56
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let (template, mut partials_resolver): (_, Box<generator::PartialsResolver>) =
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn generator::PartialsResolver`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_left`: superseded by `trim_start`
[INFO] [stdout]   --> src/scanner.rs:49:39
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let input = input[leading_dots..].trim_left();
[INFO] [stdout]    |                                       ^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_start`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right`: superseded by `trim_end`
[INFO] [stdout]   --> src/scanner.rs:52:49
[INFO] [stdout]    |
[INFO] [stdout] 52 |         true => (true, input[..input.len() - 2].trim_right()),
[INFO] [stdout]    |                                                 ^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/generator.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     panic!(format!("Too many leading dots ({}) in scope depth of only {}", x, scope_depth));
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     panic!("Too many leading dots ({}) in scope depth of only {}", x, scope_depth);
[INFO] [stdout]    |                           --                                                                    --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "257bb2c9bdc9d2e4c79c4021e1790f8aa3344f0c8fb1fa50e75b0c610cdcd9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "257bb2c9bdc9d2e4c79c4021e1790f8aa3344f0c8fb1fa50e75b0c610cdcd9c6", kill_on_drop: false }`
[INFO] [stdout] 257bb2c9bdc9d2e4c79c4021e1790f8aa3344f0c8fb1fa50e75b0c610cdcd9c6
